1197ba5f4SPaul Zimmerman /* 2197ba5f4SPaul Zimmerman * hcd.c - DesignWare HS OTG Controller host-mode routines 3197ba5f4SPaul Zimmerman * 4197ba5f4SPaul Zimmerman * Copyright (C) 2004-2013 Synopsys, Inc. 5197ba5f4SPaul Zimmerman * 6197ba5f4SPaul Zimmerman * Redistribution and use in source and binary forms, with or without 7197ba5f4SPaul Zimmerman * modification, are permitted provided that the following conditions 8197ba5f4SPaul Zimmerman * are met: 9197ba5f4SPaul Zimmerman * 1. Redistributions of source code must retain the above copyright 10197ba5f4SPaul Zimmerman * notice, this list of conditions, and the following disclaimer, 11197ba5f4SPaul Zimmerman * without modification. 12197ba5f4SPaul Zimmerman * 2. Redistributions in binary form must reproduce the above copyright 13197ba5f4SPaul Zimmerman * notice, this list of conditions and the following disclaimer in the 14197ba5f4SPaul Zimmerman * documentation and/or other materials provided with the distribution. 15197ba5f4SPaul Zimmerman * 3. The names of the above-listed copyright holders may not be used 16197ba5f4SPaul Zimmerman * to endorse or promote products derived from this software without 17197ba5f4SPaul Zimmerman * specific prior written permission. 18197ba5f4SPaul Zimmerman * 19197ba5f4SPaul Zimmerman * ALTERNATIVELY, this software may be distributed under the terms of the 20197ba5f4SPaul Zimmerman * GNU General Public License ("GPL") as published by the Free Software 21197ba5f4SPaul Zimmerman * Foundation; either version 2 of the License, or (at your option) any 22197ba5f4SPaul Zimmerman * later version. 23197ba5f4SPaul Zimmerman * 24197ba5f4SPaul Zimmerman * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 25197ba5f4SPaul Zimmerman * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 26197ba5f4SPaul Zimmerman * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27197ba5f4SPaul Zimmerman * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 28197ba5f4SPaul Zimmerman * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 29197ba5f4SPaul Zimmerman * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 30197ba5f4SPaul Zimmerman * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 31197ba5f4SPaul Zimmerman * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 32197ba5f4SPaul Zimmerman * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 33197ba5f4SPaul Zimmerman * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 34197ba5f4SPaul Zimmerman * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35197ba5f4SPaul Zimmerman */ 36197ba5f4SPaul Zimmerman 37197ba5f4SPaul Zimmerman /* 38197ba5f4SPaul Zimmerman * This file contains the core HCD code, and implements the Linux hc_driver 39197ba5f4SPaul Zimmerman * API 40197ba5f4SPaul Zimmerman */ 41197ba5f4SPaul Zimmerman #include <linux/kernel.h> 42197ba5f4SPaul Zimmerman #include <linux/module.h> 43197ba5f4SPaul Zimmerman #include <linux/spinlock.h> 44197ba5f4SPaul Zimmerman #include <linux/interrupt.h> 45197ba5f4SPaul Zimmerman #include <linux/dma-mapping.h> 46197ba5f4SPaul Zimmerman #include <linux/delay.h> 47197ba5f4SPaul Zimmerman #include <linux/io.h> 48197ba5f4SPaul Zimmerman #include <linux/slab.h> 49197ba5f4SPaul Zimmerman #include <linux/usb.h> 50197ba5f4SPaul Zimmerman 51197ba5f4SPaul Zimmerman #include <linux/usb/hcd.h> 52197ba5f4SPaul Zimmerman #include <linux/usb/ch11.h> 53197ba5f4SPaul Zimmerman 54197ba5f4SPaul Zimmerman #include "core.h" 55197ba5f4SPaul Zimmerman #include "hcd.h" 56197ba5f4SPaul Zimmerman 57197ba5f4SPaul Zimmerman /** 58197ba5f4SPaul Zimmerman * dwc2_dump_channel_info() - Prints the state of a host channel 59197ba5f4SPaul Zimmerman * 60197ba5f4SPaul Zimmerman * @hsotg: Programming view of DWC_otg controller 61197ba5f4SPaul Zimmerman * @chan: Pointer to the channel to dump 62197ba5f4SPaul Zimmerman * 63197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 64197ba5f4SPaul Zimmerman * 65197ba5f4SPaul Zimmerman * NOTE: This function will be removed once the peripheral controller code 66197ba5f4SPaul Zimmerman * is integrated and the driver is stable 67197ba5f4SPaul Zimmerman */ 68197ba5f4SPaul Zimmerman static void dwc2_dump_channel_info(struct dwc2_hsotg *hsotg, 69197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan) 70197ba5f4SPaul Zimmerman { 71197ba5f4SPaul Zimmerman #ifdef VERBOSE_DEBUG 72197ba5f4SPaul Zimmerman int num_channels = hsotg->core_params->host_channels; 73197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 74197ba5f4SPaul Zimmerman u32 hcchar; 75197ba5f4SPaul Zimmerman u32 hcsplt; 76197ba5f4SPaul Zimmerman u32 hctsiz; 77197ba5f4SPaul Zimmerman u32 hc_dma; 78197ba5f4SPaul Zimmerman int i; 79197ba5f4SPaul Zimmerman 80197ba5f4SPaul Zimmerman if (chan == NULL) 81197ba5f4SPaul Zimmerman return; 82197ba5f4SPaul Zimmerman 8395c8bc36SAntti Seppälä hcchar = dwc2_readl(hsotg->regs + HCCHAR(chan->hc_num)); 8495c8bc36SAntti Seppälä hcsplt = dwc2_readl(hsotg->regs + HCSPLT(chan->hc_num)); 8595c8bc36SAntti Seppälä hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chan->hc_num)); 8695c8bc36SAntti Seppälä hc_dma = dwc2_readl(hsotg->regs + HCDMA(chan->hc_num)); 87197ba5f4SPaul Zimmerman 88197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " Assigned to channel %p:\n", chan); 89197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hcchar 0x%08x, hcsplt 0x%08x\n", 90197ba5f4SPaul Zimmerman hcchar, hcsplt); 91197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hctsiz 0x%08x, hc_dma 0x%08x\n", 92197ba5f4SPaul Zimmerman hctsiz, hc_dma); 93197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " dev_addr: %d, ep_num: %d, ep_is_in: %d\n", 94197ba5f4SPaul Zimmerman chan->dev_addr, chan->ep_num, chan->ep_is_in); 95197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " ep_type: %d\n", chan->ep_type); 96197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " max_packet: %d\n", chan->max_packet); 97197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " data_pid_start: %d\n", chan->data_pid_start); 98197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_started: %d\n", chan->xfer_started); 99197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " halt_status: %d\n", chan->halt_status); 100197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_buf: %p\n", chan->xfer_buf); 101197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_dma: %08lx\n", 102197ba5f4SPaul Zimmerman (unsigned long)chan->xfer_dma); 103197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_len: %d\n", chan->xfer_len); 104197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " qh: %p\n", chan->qh); 105197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " NP inactive sched:\n"); 106197ba5f4SPaul Zimmerman list_for_each_entry(qh, &hsotg->non_periodic_sched_inactive, 107197ba5f4SPaul Zimmerman qh_list_entry) 108197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " %p\n", qh); 109197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " NP active sched:\n"); 110197ba5f4SPaul Zimmerman list_for_each_entry(qh, &hsotg->non_periodic_sched_active, 111197ba5f4SPaul Zimmerman qh_list_entry) 112197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " %p\n", qh); 113197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " Channels:\n"); 114197ba5f4SPaul Zimmerman for (i = 0; i < num_channels; i++) { 115197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan = hsotg->hc_ptr_array[i]; 116197ba5f4SPaul Zimmerman 117197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " %2d: %p\n", i, chan); 118197ba5f4SPaul Zimmerman } 119197ba5f4SPaul Zimmerman #endif /* VERBOSE_DEBUG */ 120197ba5f4SPaul Zimmerman } 121197ba5f4SPaul Zimmerman 122197ba5f4SPaul Zimmerman /* 123197ba5f4SPaul Zimmerman * Processes all the URBs in a single list of QHs. Completes them with 124197ba5f4SPaul Zimmerman * -ETIMEDOUT and frees the QTD. 125197ba5f4SPaul Zimmerman * 126197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 127197ba5f4SPaul Zimmerman */ 128197ba5f4SPaul Zimmerman static void dwc2_kill_urbs_in_qh_list(struct dwc2_hsotg *hsotg, 129197ba5f4SPaul Zimmerman struct list_head *qh_list) 130197ba5f4SPaul Zimmerman { 131197ba5f4SPaul Zimmerman struct dwc2_qh *qh, *qh_tmp; 132197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd, *qtd_tmp; 133197ba5f4SPaul Zimmerman 134197ba5f4SPaul Zimmerman list_for_each_entry_safe(qh, qh_tmp, qh_list, qh_list_entry) { 135197ba5f4SPaul Zimmerman list_for_each_entry_safe(qtd, qtd_tmp, &qh->qtd_list, 136197ba5f4SPaul Zimmerman qtd_list_entry) { 137197ba5f4SPaul Zimmerman dwc2_host_complete(hsotg, qtd, -ETIMEDOUT); 138197ba5f4SPaul Zimmerman dwc2_hcd_qtd_unlink_and_free(hsotg, qtd, qh); 139197ba5f4SPaul Zimmerman } 140197ba5f4SPaul Zimmerman } 141197ba5f4SPaul Zimmerman } 142197ba5f4SPaul Zimmerman 143197ba5f4SPaul Zimmerman static void dwc2_qh_list_free(struct dwc2_hsotg *hsotg, 144197ba5f4SPaul Zimmerman struct list_head *qh_list) 145197ba5f4SPaul Zimmerman { 146197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd, *qtd_tmp; 147197ba5f4SPaul Zimmerman struct dwc2_qh *qh, *qh_tmp; 148197ba5f4SPaul Zimmerman unsigned long flags; 149197ba5f4SPaul Zimmerman 150197ba5f4SPaul Zimmerman if (!qh_list->next) 151197ba5f4SPaul Zimmerman /* The list hasn't been initialized yet */ 152197ba5f4SPaul Zimmerman return; 153197ba5f4SPaul Zimmerman 154197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 155197ba5f4SPaul Zimmerman 156197ba5f4SPaul Zimmerman /* Ensure there are no QTDs or URBs left */ 157197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, qh_list); 158197ba5f4SPaul Zimmerman 159197ba5f4SPaul Zimmerman list_for_each_entry_safe(qh, qh_tmp, qh_list, qh_list_entry) { 160197ba5f4SPaul Zimmerman dwc2_hcd_qh_unlink(hsotg, qh); 161197ba5f4SPaul Zimmerman 162197ba5f4SPaul Zimmerman /* Free each QTD in the QH's QTD list */ 163197ba5f4SPaul Zimmerman list_for_each_entry_safe(qtd, qtd_tmp, &qh->qtd_list, 164197ba5f4SPaul Zimmerman qtd_list_entry) 165197ba5f4SPaul Zimmerman dwc2_hcd_qtd_unlink_and_free(hsotg, qtd, qh); 166197ba5f4SPaul Zimmerman 167197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 168197ba5f4SPaul Zimmerman dwc2_hcd_qh_free(hsotg, qh); 169197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 170197ba5f4SPaul Zimmerman } 171197ba5f4SPaul Zimmerman 172197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 173197ba5f4SPaul Zimmerman } 174197ba5f4SPaul Zimmerman 175197ba5f4SPaul Zimmerman /* 176197ba5f4SPaul Zimmerman * Responds with an error status of -ETIMEDOUT to all URBs in the non-periodic 177197ba5f4SPaul Zimmerman * and periodic schedules. The QTD associated with each URB is removed from 178197ba5f4SPaul Zimmerman * the schedule and freed. This function may be called when a disconnect is 179197ba5f4SPaul Zimmerman * detected or when the HCD is being stopped. 180197ba5f4SPaul Zimmerman * 181197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 182197ba5f4SPaul Zimmerman */ 183197ba5f4SPaul Zimmerman static void dwc2_kill_all_urbs(struct dwc2_hsotg *hsotg) 184197ba5f4SPaul Zimmerman { 185197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, &hsotg->non_periodic_sched_inactive); 186197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, &hsotg->non_periodic_sched_active); 187197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, &hsotg->periodic_sched_inactive); 188197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, &hsotg->periodic_sched_ready); 189197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, &hsotg->periodic_sched_assigned); 190197ba5f4SPaul Zimmerman dwc2_kill_urbs_in_qh_list(hsotg, &hsotg->periodic_sched_queued); 191197ba5f4SPaul Zimmerman } 192197ba5f4SPaul Zimmerman 193197ba5f4SPaul Zimmerman /** 194197ba5f4SPaul Zimmerman * dwc2_hcd_start() - Starts the HCD when switching to Host mode 195197ba5f4SPaul Zimmerman * 196197ba5f4SPaul Zimmerman * @hsotg: Pointer to struct dwc2_hsotg 197197ba5f4SPaul Zimmerman */ 198197ba5f4SPaul Zimmerman void dwc2_hcd_start(struct dwc2_hsotg *hsotg) 199197ba5f4SPaul Zimmerman { 200197ba5f4SPaul Zimmerman u32 hprt0; 201197ba5f4SPaul Zimmerman 202197ba5f4SPaul Zimmerman if (hsotg->op_state == OTG_STATE_B_HOST) { 203197ba5f4SPaul Zimmerman /* 204197ba5f4SPaul Zimmerman * Reset the port. During a HNP mode switch the reset 205197ba5f4SPaul Zimmerman * needs to occur within 1ms and have a duration of at 206197ba5f4SPaul Zimmerman * least 50ms. 207197ba5f4SPaul Zimmerman */ 208197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 209197ba5f4SPaul Zimmerman hprt0 |= HPRT0_RST; 21095c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 211197ba5f4SPaul Zimmerman } 212197ba5f4SPaul Zimmerman 213197ba5f4SPaul Zimmerman queue_delayed_work(hsotg->wq_otg, &hsotg->start_work, 214197ba5f4SPaul Zimmerman msecs_to_jiffies(50)); 215197ba5f4SPaul Zimmerman } 216197ba5f4SPaul Zimmerman 217197ba5f4SPaul Zimmerman /* Must be called with interrupt disabled and spinlock held */ 218197ba5f4SPaul Zimmerman static void dwc2_hcd_cleanup_channels(struct dwc2_hsotg *hsotg) 219197ba5f4SPaul Zimmerman { 220197ba5f4SPaul Zimmerman int num_channels = hsotg->core_params->host_channels; 221197ba5f4SPaul Zimmerman struct dwc2_host_chan *channel; 222197ba5f4SPaul Zimmerman u32 hcchar; 223197ba5f4SPaul Zimmerman int i; 224197ba5f4SPaul Zimmerman 225197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable <= 0) { 226197ba5f4SPaul Zimmerman /* Flush out any channel requests in slave mode */ 227197ba5f4SPaul Zimmerman for (i = 0; i < num_channels; i++) { 228197ba5f4SPaul Zimmerman channel = hsotg->hc_ptr_array[i]; 229197ba5f4SPaul Zimmerman if (!list_empty(&channel->hc_list_entry)) 230197ba5f4SPaul Zimmerman continue; 23195c8bc36SAntti Seppälä hcchar = dwc2_readl(hsotg->regs + HCCHAR(i)); 232197ba5f4SPaul Zimmerman if (hcchar & HCCHAR_CHENA) { 233197ba5f4SPaul Zimmerman hcchar &= ~(HCCHAR_CHENA | HCCHAR_EPDIR); 234197ba5f4SPaul Zimmerman hcchar |= HCCHAR_CHDIS; 23595c8bc36SAntti Seppälä dwc2_writel(hcchar, hsotg->regs + HCCHAR(i)); 236197ba5f4SPaul Zimmerman } 237197ba5f4SPaul Zimmerman } 238197ba5f4SPaul Zimmerman } 239197ba5f4SPaul Zimmerman 240197ba5f4SPaul Zimmerman for (i = 0; i < num_channels; i++) { 241197ba5f4SPaul Zimmerman channel = hsotg->hc_ptr_array[i]; 242197ba5f4SPaul Zimmerman if (!list_empty(&channel->hc_list_entry)) 243197ba5f4SPaul Zimmerman continue; 24495c8bc36SAntti Seppälä hcchar = dwc2_readl(hsotg->regs + HCCHAR(i)); 245197ba5f4SPaul Zimmerman if (hcchar & HCCHAR_CHENA) { 246197ba5f4SPaul Zimmerman /* Halt the channel */ 247197ba5f4SPaul Zimmerman hcchar |= HCCHAR_CHDIS; 24895c8bc36SAntti Seppälä dwc2_writel(hcchar, hsotg->regs + HCCHAR(i)); 249197ba5f4SPaul Zimmerman } 250197ba5f4SPaul Zimmerman 251197ba5f4SPaul Zimmerman dwc2_hc_cleanup(hsotg, channel); 252197ba5f4SPaul Zimmerman list_add_tail(&channel->hc_list_entry, &hsotg->free_hc_list); 253197ba5f4SPaul Zimmerman /* 254197ba5f4SPaul Zimmerman * Added for Descriptor DMA to prevent channel double cleanup in 255197ba5f4SPaul Zimmerman * release_channel_ddma(), which is called from ep_disable when 256197ba5f4SPaul Zimmerman * device disconnects 257197ba5f4SPaul Zimmerman */ 258197ba5f4SPaul Zimmerman channel->qh = NULL; 259197ba5f4SPaul Zimmerman } 2607252f1bfSVincent Palatin /* All channels have been freed, mark them available */ 2617252f1bfSVincent Palatin if (hsotg->core_params->uframe_sched > 0) { 2627252f1bfSVincent Palatin hsotg->available_host_channels = 2637252f1bfSVincent Palatin hsotg->core_params->host_channels; 2647252f1bfSVincent Palatin } else { 2657252f1bfSVincent Palatin hsotg->non_periodic_channels = 0; 2667252f1bfSVincent Palatin hsotg->periodic_channels = 0; 2677252f1bfSVincent Palatin } 268197ba5f4SPaul Zimmerman } 269197ba5f4SPaul Zimmerman 270197ba5f4SPaul Zimmerman /** 271197ba5f4SPaul Zimmerman * dwc2_hcd_disconnect() - Handles disconnect of the HCD 272197ba5f4SPaul Zimmerman * 273197ba5f4SPaul Zimmerman * @hsotg: Pointer to struct dwc2_hsotg 274197ba5f4SPaul Zimmerman * 275197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 276197ba5f4SPaul Zimmerman */ 277197ba5f4SPaul Zimmerman void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg) 278197ba5f4SPaul Zimmerman { 279197ba5f4SPaul Zimmerman u32 intr; 280197ba5f4SPaul Zimmerman 281197ba5f4SPaul Zimmerman /* Set status flags for the hub driver */ 282197ba5f4SPaul Zimmerman hsotg->flags.b.port_connect_status_change = 1; 283197ba5f4SPaul Zimmerman hsotg->flags.b.port_connect_status = 0; 284197ba5f4SPaul Zimmerman 285197ba5f4SPaul Zimmerman /* 286197ba5f4SPaul Zimmerman * Shutdown any transfers in process by clearing the Tx FIFO Empty 287197ba5f4SPaul Zimmerman * interrupt mask and status bits and disabling subsequent host 288197ba5f4SPaul Zimmerman * channel interrupts. 289197ba5f4SPaul Zimmerman */ 29095c8bc36SAntti Seppälä intr = dwc2_readl(hsotg->regs + GINTMSK); 291197ba5f4SPaul Zimmerman intr &= ~(GINTSTS_NPTXFEMP | GINTSTS_PTXFEMP | GINTSTS_HCHINT); 29295c8bc36SAntti Seppälä dwc2_writel(intr, hsotg->regs + GINTMSK); 293197ba5f4SPaul Zimmerman intr = GINTSTS_NPTXFEMP | GINTSTS_PTXFEMP | GINTSTS_HCHINT; 29495c8bc36SAntti Seppälä dwc2_writel(intr, hsotg->regs + GINTSTS); 295197ba5f4SPaul Zimmerman 296197ba5f4SPaul Zimmerman /* 297197ba5f4SPaul Zimmerman * Turn off the vbus power only if the core has transitioned to device 298197ba5f4SPaul Zimmerman * mode. If still in host mode, need to keep power on to detect a 299197ba5f4SPaul Zimmerman * reconnection. 300197ba5f4SPaul Zimmerman */ 301197ba5f4SPaul Zimmerman if (dwc2_is_device_mode(hsotg)) { 302197ba5f4SPaul Zimmerman if (hsotg->op_state != OTG_STATE_A_SUSPEND) { 303197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Disconnect: PortPower off\n"); 30495c8bc36SAntti Seppälä dwc2_writel(0, hsotg->regs + HPRT0); 305197ba5f4SPaul Zimmerman } 306197ba5f4SPaul Zimmerman 307197ba5f4SPaul Zimmerman dwc2_disable_host_interrupts(hsotg); 308197ba5f4SPaul Zimmerman } 309197ba5f4SPaul Zimmerman 310197ba5f4SPaul Zimmerman /* Respond with an error status to all URBs in the schedule */ 311197ba5f4SPaul Zimmerman dwc2_kill_all_urbs(hsotg); 312197ba5f4SPaul Zimmerman 313197ba5f4SPaul Zimmerman if (dwc2_is_host_mode(hsotg)) 314197ba5f4SPaul Zimmerman /* Clean up any host channels that were in use */ 315197ba5f4SPaul Zimmerman dwc2_hcd_cleanup_channels(hsotg); 316197ba5f4SPaul Zimmerman 317197ba5f4SPaul Zimmerman dwc2_host_disconnect(hsotg); 318197ba5f4SPaul Zimmerman } 319197ba5f4SPaul Zimmerman 320197ba5f4SPaul Zimmerman /** 321197ba5f4SPaul Zimmerman * dwc2_hcd_rem_wakeup() - Handles Remote Wakeup 322197ba5f4SPaul Zimmerman * 323197ba5f4SPaul Zimmerman * @hsotg: Pointer to struct dwc2_hsotg 324197ba5f4SPaul Zimmerman */ 325197ba5f4SPaul Zimmerman static void dwc2_hcd_rem_wakeup(struct dwc2_hsotg *hsotg) 326197ba5f4SPaul Zimmerman { 327b46146d5SGregory Herrero if (hsotg->lx_state == DWC2_L2) { 328197ba5f4SPaul Zimmerman hsotg->flags.b.port_suspend_change = 1; 329b46146d5SGregory Herrero usb_hcd_resume_root_hub(hsotg->priv); 330b46146d5SGregory Herrero } else { 331197ba5f4SPaul Zimmerman hsotg->flags.b.port_l1_change = 1; 332197ba5f4SPaul Zimmerman } 333b46146d5SGregory Herrero } 334197ba5f4SPaul Zimmerman 335197ba5f4SPaul Zimmerman /** 336197ba5f4SPaul Zimmerman * dwc2_hcd_stop() - Halts the DWC_otg host mode operations in a clean manner 337197ba5f4SPaul Zimmerman * 338197ba5f4SPaul Zimmerman * @hsotg: Pointer to struct dwc2_hsotg 339197ba5f4SPaul Zimmerman * 340197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 341197ba5f4SPaul Zimmerman */ 342197ba5f4SPaul Zimmerman void dwc2_hcd_stop(struct dwc2_hsotg *hsotg) 343197ba5f4SPaul Zimmerman { 344197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD STOP\n"); 345197ba5f4SPaul Zimmerman 346197ba5f4SPaul Zimmerman /* 347197ba5f4SPaul Zimmerman * The root hub should be disconnected before this function is called. 348197ba5f4SPaul Zimmerman * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue) 349197ba5f4SPaul Zimmerman * and the QH lists (via ..._hcd_endpoint_disable). 350197ba5f4SPaul Zimmerman */ 351197ba5f4SPaul Zimmerman 352197ba5f4SPaul Zimmerman /* Turn off all host-specific interrupts */ 353197ba5f4SPaul Zimmerman dwc2_disable_host_interrupts(hsotg); 354197ba5f4SPaul Zimmerman 355197ba5f4SPaul Zimmerman /* Turn off the vbus power */ 356197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "PortPower off\n"); 35795c8bc36SAntti Seppälä dwc2_writel(0, hsotg->regs + HPRT0); 358197ba5f4SPaul Zimmerman } 359197ba5f4SPaul Zimmerman 36033ad261aSGregory Herrero /* Caller must hold driver lock */ 361197ba5f4SPaul Zimmerman static int dwc2_hcd_urb_enqueue(struct dwc2_hsotg *hsotg, 362b58e6ceeSMian Yousaf Kaukab struct dwc2_hcd_urb *urb, struct dwc2_qh *qh, 363b5a468a6SMian Yousaf Kaukab struct dwc2_qtd *qtd) 364197ba5f4SPaul Zimmerman { 365197ba5f4SPaul Zimmerman u32 intr_mask; 366197ba5f4SPaul Zimmerman int retval; 367197ba5f4SPaul Zimmerman int dev_speed; 368197ba5f4SPaul Zimmerman 369197ba5f4SPaul Zimmerman if (!hsotg->flags.b.port_connect_status) { 370197ba5f4SPaul Zimmerman /* No longer connected */ 371197ba5f4SPaul Zimmerman dev_err(hsotg->dev, "Not connected\n"); 372197ba5f4SPaul Zimmerman return -ENODEV; 373197ba5f4SPaul Zimmerman } 374197ba5f4SPaul Zimmerman 375197ba5f4SPaul Zimmerman dev_speed = dwc2_host_get_speed(hsotg, urb->priv); 376197ba5f4SPaul Zimmerman 377197ba5f4SPaul Zimmerman /* Some configurations cannot support LS traffic on a FS root port */ 378197ba5f4SPaul Zimmerman if ((dev_speed == USB_SPEED_LOW) && 379197ba5f4SPaul Zimmerman (hsotg->hw_params.fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED) && 380197ba5f4SPaul Zimmerman (hsotg->hw_params.hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI)) { 38195c8bc36SAntti Seppälä u32 hprt0 = dwc2_readl(hsotg->regs + HPRT0); 382197ba5f4SPaul Zimmerman u32 prtspd = (hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT; 383197ba5f4SPaul Zimmerman 384197ba5f4SPaul Zimmerman if (prtspd == HPRT0_SPD_FULL_SPEED) 385197ba5f4SPaul Zimmerman return -ENODEV; 386197ba5f4SPaul Zimmerman } 387197ba5f4SPaul Zimmerman 388197ba5f4SPaul Zimmerman if (!qtd) 389b5a468a6SMian Yousaf Kaukab return -EINVAL; 390197ba5f4SPaul Zimmerman 391197ba5f4SPaul Zimmerman dwc2_hcd_qtd_init(qtd, urb); 392b58e6ceeSMian Yousaf Kaukab retval = dwc2_hcd_qtd_add(hsotg, qtd, qh); 393197ba5f4SPaul Zimmerman if (retval) { 394197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 395197ba5f4SPaul Zimmerman "DWC OTG HCD URB Enqueue failed adding QTD. Error status %d\n", 396197ba5f4SPaul Zimmerman retval); 397197ba5f4SPaul Zimmerman return retval; 398197ba5f4SPaul Zimmerman } 399197ba5f4SPaul Zimmerman 40095c8bc36SAntti Seppälä intr_mask = dwc2_readl(hsotg->regs + GINTMSK); 401197ba5f4SPaul Zimmerman if (!(intr_mask & GINTSTS_SOF)) { 402197ba5f4SPaul Zimmerman enum dwc2_transaction_type tr_type; 403197ba5f4SPaul Zimmerman 404197ba5f4SPaul Zimmerman if (qtd->qh->ep_type == USB_ENDPOINT_XFER_BULK && 405197ba5f4SPaul Zimmerman !(qtd->urb->flags & URB_GIVEBACK_ASAP)) 406197ba5f4SPaul Zimmerman /* 407197ba5f4SPaul Zimmerman * Do not schedule SG transactions until qtd has 408197ba5f4SPaul Zimmerman * URB_GIVEBACK_ASAP set 409197ba5f4SPaul Zimmerman */ 410197ba5f4SPaul Zimmerman return 0; 411197ba5f4SPaul Zimmerman 412197ba5f4SPaul Zimmerman tr_type = dwc2_hcd_select_transactions(hsotg); 413197ba5f4SPaul Zimmerman if (tr_type != DWC2_TRANSACTION_NONE) 414197ba5f4SPaul Zimmerman dwc2_hcd_queue_transactions(hsotg, tr_type); 415197ba5f4SPaul Zimmerman } 416197ba5f4SPaul Zimmerman 417197ba5f4SPaul Zimmerman return 0; 418197ba5f4SPaul Zimmerman } 419197ba5f4SPaul Zimmerman 420197ba5f4SPaul Zimmerman /* Must be called with interrupt disabled and spinlock held */ 421197ba5f4SPaul Zimmerman static int dwc2_hcd_urb_dequeue(struct dwc2_hsotg *hsotg, 422197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *urb) 423197ba5f4SPaul Zimmerman { 424197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 425197ba5f4SPaul Zimmerman struct dwc2_qtd *urb_qtd; 426197ba5f4SPaul Zimmerman 427197ba5f4SPaul Zimmerman urb_qtd = urb->qtd; 428197ba5f4SPaul Zimmerman if (!urb_qtd) { 429197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "## Urb QTD is NULL ##\n"); 430197ba5f4SPaul Zimmerman return -EINVAL; 431197ba5f4SPaul Zimmerman } 432197ba5f4SPaul Zimmerman 433197ba5f4SPaul Zimmerman qh = urb_qtd->qh; 434197ba5f4SPaul Zimmerman if (!qh) { 435197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "## Urb QTD QH is NULL ##\n"); 436197ba5f4SPaul Zimmerman return -EINVAL; 437197ba5f4SPaul Zimmerman } 438197ba5f4SPaul Zimmerman 439197ba5f4SPaul Zimmerman urb->priv = NULL; 440197ba5f4SPaul Zimmerman 441197ba5f4SPaul Zimmerman if (urb_qtd->in_process && qh->channel) { 442197ba5f4SPaul Zimmerman dwc2_dump_channel_info(hsotg, qh->channel); 443197ba5f4SPaul Zimmerman 444197ba5f4SPaul Zimmerman /* The QTD is in process (it has been assigned to a channel) */ 445197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_connect_status) 446197ba5f4SPaul Zimmerman /* 447197ba5f4SPaul Zimmerman * If still connected (i.e. in host mode), halt the 448197ba5f4SPaul Zimmerman * channel so it can be used for other transfers. If 449197ba5f4SPaul Zimmerman * no longer connected, the host registers can't be 450197ba5f4SPaul Zimmerman * written to halt the channel since the core is in 451197ba5f4SPaul Zimmerman * device mode. 452197ba5f4SPaul Zimmerman */ 453197ba5f4SPaul Zimmerman dwc2_hc_halt(hsotg, qh->channel, 454197ba5f4SPaul Zimmerman DWC2_HC_XFER_URB_DEQUEUE); 455197ba5f4SPaul Zimmerman } 456197ba5f4SPaul Zimmerman 457197ba5f4SPaul Zimmerman /* 458197ba5f4SPaul Zimmerman * Free the QTD and clean up the associated QH. Leave the QH in the 459197ba5f4SPaul Zimmerman * schedule if it has any remaining QTDs. 460197ba5f4SPaul Zimmerman */ 461197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_desc_enable <= 0) { 462197ba5f4SPaul Zimmerman u8 in_process = urb_qtd->in_process; 463197ba5f4SPaul Zimmerman 464197ba5f4SPaul Zimmerman dwc2_hcd_qtd_unlink_and_free(hsotg, urb_qtd, qh); 465197ba5f4SPaul Zimmerman if (in_process) { 466197ba5f4SPaul Zimmerman dwc2_hcd_qh_deactivate(hsotg, qh, 0); 467197ba5f4SPaul Zimmerman qh->channel = NULL; 468197ba5f4SPaul Zimmerman } else if (list_empty(&qh->qtd_list)) { 469197ba5f4SPaul Zimmerman dwc2_hcd_qh_unlink(hsotg, qh); 470197ba5f4SPaul Zimmerman } 471197ba5f4SPaul Zimmerman } else { 472197ba5f4SPaul Zimmerman dwc2_hcd_qtd_unlink_and_free(hsotg, urb_qtd, qh); 473197ba5f4SPaul Zimmerman } 474197ba5f4SPaul Zimmerman 475197ba5f4SPaul Zimmerman return 0; 476197ba5f4SPaul Zimmerman } 477197ba5f4SPaul Zimmerman 478197ba5f4SPaul Zimmerman /* Must NOT be called with interrupt disabled or spinlock held */ 479197ba5f4SPaul Zimmerman static int dwc2_hcd_endpoint_disable(struct dwc2_hsotg *hsotg, 480197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep, int retry) 481197ba5f4SPaul Zimmerman { 482197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd, *qtd_tmp; 483197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 484197ba5f4SPaul Zimmerman unsigned long flags; 485197ba5f4SPaul Zimmerman int rc; 486197ba5f4SPaul Zimmerman 487197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 488197ba5f4SPaul Zimmerman 489197ba5f4SPaul Zimmerman qh = ep->hcpriv; 490197ba5f4SPaul Zimmerman if (!qh) { 491197ba5f4SPaul Zimmerman rc = -EINVAL; 492197ba5f4SPaul Zimmerman goto err; 493197ba5f4SPaul Zimmerman } 494197ba5f4SPaul Zimmerman 495197ba5f4SPaul Zimmerman while (!list_empty(&qh->qtd_list) && retry--) { 496197ba5f4SPaul Zimmerman if (retry == 0) { 497197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 498197ba5f4SPaul Zimmerman "## timeout in dwc2_hcd_endpoint_disable() ##\n"); 499197ba5f4SPaul Zimmerman rc = -EBUSY; 500197ba5f4SPaul Zimmerman goto err; 501197ba5f4SPaul Zimmerman } 502197ba5f4SPaul Zimmerman 503197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 504197ba5f4SPaul Zimmerman usleep_range(20000, 40000); 505197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 506197ba5f4SPaul Zimmerman qh = ep->hcpriv; 507197ba5f4SPaul Zimmerman if (!qh) { 508197ba5f4SPaul Zimmerman rc = -EINVAL; 509197ba5f4SPaul Zimmerman goto err; 510197ba5f4SPaul Zimmerman } 511197ba5f4SPaul Zimmerman } 512197ba5f4SPaul Zimmerman 513197ba5f4SPaul Zimmerman dwc2_hcd_qh_unlink(hsotg, qh); 514197ba5f4SPaul Zimmerman 515197ba5f4SPaul Zimmerman /* Free each QTD in the QH's QTD list */ 516197ba5f4SPaul Zimmerman list_for_each_entry_safe(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) 517197ba5f4SPaul Zimmerman dwc2_hcd_qtd_unlink_and_free(hsotg, qtd, qh); 518197ba5f4SPaul Zimmerman 519197ba5f4SPaul Zimmerman ep->hcpriv = NULL; 520197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 521197ba5f4SPaul Zimmerman dwc2_hcd_qh_free(hsotg, qh); 522197ba5f4SPaul Zimmerman 523197ba5f4SPaul Zimmerman return 0; 524197ba5f4SPaul Zimmerman 525197ba5f4SPaul Zimmerman err: 526197ba5f4SPaul Zimmerman ep->hcpriv = NULL; 527197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 528197ba5f4SPaul Zimmerman 529197ba5f4SPaul Zimmerman return rc; 530197ba5f4SPaul Zimmerman } 531197ba5f4SPaul Zimmerman 532197ba5f4SPaul Zimmerman /* Must be called with interrupt disabled and spinlock held */ 533197ba5f4SPaul Zimmerman static int dwc2_hcd_endpoint_reset(struct dwc2_hsotg *hsotg, 534197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep) 535197ba5f4SPaul Zimmerman { 536197ba5f4SPaul Zimmerman struct dwc2_qh *qh = ep->hcpriv; 537197ba5f4SPaul Zimmerman 538197ba5f4SPaul Zimmerman if (!qh) 539197ba5f4SPaul Zimmerman return -EINVAL; 540197ba5f4SPaul Zimmerman 541197ba5f4SPaul Zimmerman qh->data_toggle = DWC2_HC_PID_DATA0; 542197ba5f4SPaul Zimmerman 543197ba5f4SPaul Zimmerman return 0; 544197ba5f4SPaul Zimmerman } 545197ba5f4SPaul Zimmerman 546197ba5f4SPaul Zimmerman /* 547197ba5f4SPaul Zimmerman * Initializes dynamic portions of the DWC_otg HCD state 548197ba5f4SPaul Zimmerman * 549197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 550197ba5f4SPaul Zimmerman */ 551197ba5f4SPaul Zimmerman static void dwc2_hcd_reinit(struct dwc2_hsotg *hsotg) 552197ba5f4SPaul Zimmerman { 553197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan, *chan_tmp; 554197ba5f4SPaul Zimmerman int num_channels; 555197ba5f4SPaul Zimmerman int i; 556197ba5f4SPaul Zimmerman 557197ba5f4SPaul Zimmerman hsotg->flags.d32 = 0; 558197ba5f4SPaul Zimmerman hsotg->non_periodic_qh_ptr = &hsotg->non_periodic_sched_active; 559197ba5f4SPaul Zimmerman 560197ba5f4SPaul Zimmerman if (hsotg->core_params->uframe_sched > 0) { 561197ba5f4SPaul Zimmerman hsotg->available_host_channels = 562197ba5f4SPaul Zimmerman hsotg->core_params->host_channels; 563197ba5f4SPaul Zimmerman } else { 564197ba5f4SPaul Zimmerman hsotg->non_periodic_channels = 0; 565197ba5f4SPaul Zimmerman hsotg->periodic_channels = 0; 566197ba5f4SPaul Zimmerman } 567197ba5f4SPaul Zimmerman 568197ba5f4SPaul Zimmerman /* 569197ba5f4SPaul Zimmerman * Put all channels in the free channel list and clean up channel 570197ba5f4SPaul Zimmerman * states 571197ba5f4SPaul Zimmerman */ 572197ba5f4SPaul Zimmerman list_for_each_entry_safe(chan, chan_tmp, &hsotg->free_hc_list, 573197ba5f4SPaul Zimmerman hc_list_entry) 574197ba5f4SPaul Zimmerman list_del_init(&chan->hc_list_entry); 575197ba5f4SPaul Zimmerman 576197ba5f4SPaul Zimmerman num_channels = hsotg->core_params->host_channels; 577197ba5f4SPaul Zimmerman for (i = 0; i < num_channels; i++) { 578197ba5f4SPaul Zimmerman chan = hsotg->hc_ptr_array[i]; 579197ba5f4SPaul Zimmerman list_add_tail(&chan->hc_list_entry, &hsotg->free_hc_list); 580197ba5f4SPaul Zimmerman dwc2_hc_cleanup(hsotg, chan); 581197ba5f4SPaul Zimmerman } 582197ba5f4SPaul Zimmerman 583197ba5f4SPaul Zimmerman /* Initialize the DWC core for host mode operation */ 584197ba5f4SPaul Zimmerman dwc2_core_host_init(hsotg); 585197ba5f4SPaul Zimmerman } 586197ba5f4SPaul Zimmerman 587197ba5f4SPaul Zimmerman static void dwc2_hc_init_split(struct dwc2_hsotg *hsotg, 588197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan, 589197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd, struct dwc2_hcd_urb *urb) 590197ba5f4SPaul Zimmerman { 591197ba5f4SPaul Zimmerman int hub_addr, hub_port; 592197ba5f4SPaul Zimmerman 593197ba5f4SPaul Zimmerman chan->do_split = 1; 594197ba5f4SPaul Zimmerman chan->xact_pos = qtd->isoc_split_pos; 595197ba5f4SPaul Zimmerman chan->complete_split = qtd->complete_split; 596197ba5f4SPaul Zimmerman dwc2_host_hub_info(hsotg, urb->priv, &hub_addr, &hub_port); 597197ba5f4SPaul Zimmerman chan->hub_addr = (u8)hub_addr; 598197ba5f4SPaul Zimmerman chan->hub_port = (u8)hub_port; 599197ba5f4SPaul Zimmerman } 600197ba5f4SPaul Zimmerman 601197ba5f4SPaul Zimmerman static void *dwc2_hc_init_xfer(struct dwc2_hsotg *hsotg, 602197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan, 603197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd, void *bufptr) 604197ba5f4SPaul Zimmerman { 605197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *urb = qtd->urb; 606197ba5f4SPaul Zimmerman struct dwc2_hcd_iso_packet_desc *frame_desc; 607197ba5f4SPaul Zimmerman 608197ba5f4SPaul Zimmerman switch (dwc2_hcd_get_pipe_type(&urb->pipe_info)) { 609197ba5f4SPaul Zimmerman case USB_ENDPOINT_XFER_CONTROL: 610197ba5f4SPaul Zimmerman chan->ep_type = USB_ENDPOINT_XFER_CONTROL; 611197ba5f4SPaul Zimmerman 612197ba5f4SPaul Zimmerman switch (qtd->control_phase) { 613197ba5f4SPaul Zimmerman case DWC2_CONTROL_SETUP: 614197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Control setup transaction\n"); 615197ba5f4SPaul Zimmerman chan->do_ping = 0; 616197ba5f4SPaul Zimmerman chan->ep_is_in = 0; 617197ba5f4SPaul Zimmerman chan->data_pid_start = DWC2_HC_PID_SETUP; 618197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) 619197ba5f4SPaul Zimmerman chan->xfer_dma = urb->setup_dma; 620197ba5f4SPaul Zimmerman else 621197ba5f4SPaul Zimmerman chan->xfer_buf = urb->setup_packet; 622197ba5f4SPaul Zimmerman chan->xfer_len = 8; 623197ba5f4SPaul Zimmerman bufptr = NULL; 624197ba5f4SPaul Zimmerman break; 625197ba5f4SPaul Zimmerman 626197ba5f4SPaul Zimmerman case DWC2_CONTROL_DATA: 627197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Control data transaction\n"); 628197ba5f4SPaul Zimmerman chan->data_pid_start = qtd->data_toggle; 629197ba5f4SPaul Zimmerman break; 630197ba5f4SPaul Zimmerman 631197ba5f4SPaul Zimmerman case DWC2_CONTROL_STATUS: 632197ba5f4SPaul Zimmerman /* 633197ba5f4SPaul Zimmerman * Direction is opposite of data direction or IN if no 634197ba5f4SPaul Zimmerman * data 635197ba5f4SPaul Zimmerman */ 636197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Control status transaction\n"); 637197ba5f4SPaul Zimmerman if (urb->length == 0) 638197ba5f4SPaul Zimmerman chan->ep_is_in = 1; 639197ba5f4SPaul Zimmerman else 640197ba5f4SPaul Zimmerman chan->ep_is_in = 641197ba5f4SPaul Zimmerman dwc2_hcd_is_pipe_out(&urb->pipe_info); 642197ba5f4SPaul Zimmerman if (chan->ep_is_in) 643197ba5f4SPaul Zimmerman chan->do_ping = 0; 644197ba5f4SPaul Zimmerman chan->data_pid_start = DWC2_HC_PID_DATA1; 645197ba5f4SPaul Zimmerman chan->xfer_len = 0; 646197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) 647197ba5f4SPaul Zimmerman chan->xfer_dma = hsotg->status_buf_dma; 648197ba5f4SPaul Zimmerman else 649197ba5f4SPaul Zimmerman chan->xfer_buf = hsotg->status_buf; 650197ba5f4SPaul Zimmerman bufptr = NULL; 651197ba5f4SPaul Zimmerman break; 652197ba5f4SPaul Zimmerman } 653197ba5f4SPaul Zimmerman break; 654197ba5f4SPaul Zimmerman 655197ba5f4SPaul Zimmerman case USB_ENDPOINT_XFER_BULK: 656197ba5f4SPaul Zimmerman chan->ep_type = USB_ENDPOINT_XFER_BULK; 657197ba5f4SPaul Zimmerman break; 658197ba5f4SPaul Zimmerman 659197ba5f4SPaul Zimmerman case USB_ENDPOINT_XFER_INT: 660197ba5f4SPaul Zimmerman chan->ep_type = USB_ENDPOINT_XFER_INT; 661197ba5f4SPaul Zimmerman break; 662197ba5f4SPaul Zimmerman 663197ba5f4SPaul Zimmerman case USB_ENDPOINT_XFER_ISOC: 664197ba5f4SPaul Zimmerman chan->ep_type = USB_ENDPOINT_XFER_ISOC; 665197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_desc_enable > 0) 666197ba5f4SPaul Zimmerman break; 667197ba5f4SPaul Zimmerman 668197ba5f4SPaul Zimmerman frame_desc = &urb->iso_descs[qtd->isoc_frame_index]; 669197ba5f4SPaul Zimmerman frame_desc->status = 0; 670197ba5f4SPaul Zimmerman 671197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) { 672197ba5f4SPaul Zimmerman chan->xfer_dma = urb->dma; 673197ba5f4SPaul Zimmerman chan->xfer_dma += frame_desc->offset + 674197ba5f4SPaul Zimmerman qtd->isoc_split_offset; 675197ba5f4SPaul Zimmerman } else { 676197ba5f4SPaul Zimmerman chan->xfer_buf = urb->buf; 677197ba5f4SPaul Zimmerman chan->xfer_buf += frame_desc->offset + 678197ba5f4SPaul Zimmerman qtd->isoc_split_offset; 679197ba5f4SPaul Zimmerman } 680197ba5f4SPaul Zimmerman 681197ba5f4SPaul Zimmerman chan->xfer_len = frame_desc->length - qtd->isoc_split_offset; 682197ba5f4SPaul Zimmerman 683197ba5f4SPaul Zimmerman /* For non-dword aligned buffers */ 684197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0 && 685197ba5f4SPaul Zimmerman (chan->xfer_dma & 0x3)) 686197ba5f4SPaul Zimmerman bufptr = (u8 *)urb->buf + frame_desc->offset + 687197ba5f4SPaul Zimmerman qtd->isoc_split_offset; 688197ba5f4SPaul Zimmerman else 689197ba5f4SPaul Zimmerman bufptr = NULL; 690197ba5f4SPaul Zimmerman 691197ba5f4SPaul Zimmerman if (chan->xact_pos == DWC2_HCSPLT_XACTPOS_ALL) { 692197ba5f4SPaul Zimmerman if (chan->xfer_len <= 188) 693197ba5f4SPaul Zimmerman chan->xact_pos = DWC2_HCSPLT_XACTPOS_ALL; 694197ba5f4SPaul Zimmerman else 695197ba5f4SPaul Zimmerman chan->xact_pos = DWC2_HCSPLT_XACTPOS_BEGIN; 696197ba5f4SPaul Zimmerman } 697197ba5f4SPaul Zimmerman break; 698197ba5f4SPaul Zimmerman } 699197ba5f4SPaul Zimmerman 700197ba5f4SPaul Zimmerman return bufptr; 701197ba5f4SPaul Zimmerman } 702197ba5f4SPaul Zimmerman 703197ba5f4SPaul Zimmerman static int dwc2_hc_setup_align_buf(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh, 7045dce9555SPaul Zimmerman struct dwc2_host_chan *chan, 7055dce9555SPaul Zimmerman struct dwc2_hcd_urb *urb, void *bufptr) 706197ba5f4SPaul Zimmerman { 707197ba5f4SPaul Zimmerman u32 buf_size; 7085dce9555SPaul Zimmerman struct urb *usb_urb; 7095dce9555SPaul Zimmerman struct usb_hcd *hcd; 710197ba5f4SPaul Zimmerman 7115dce9555SPaul Zimmerman if (!qh->dw_align_buf) { 712197ba5f4SPaul Zimmerman if (chan->ep_type != USB_ENDPOINT_XFER_ISOC) 713197ba5f4SPaul Zimmerman buf_size = hsotg->core_params->max_transfer_size; 714197ba5f4SPaul Zimmerman else 7155dce9555SPaul Zimmerman /* 3072 = 3 max-size Isoc packets */ 7165dce9555SPaul Zimmerman buf_size = 3072; 717197ba5f4SPaul Zimmerman 718db62b9a8SGregory Herrero qh->dw_align_buf = kmalloc(buf_size, GFP_ATOMIC | GFP_DMA); 719197ba5f4SPaul Zimmerman if (!qh->dw_align_buf) 720197ba5f4SPaul Zimmerman return -ENOMEM; 7215dce9555SPaul Zimmerman qh->dw_align_buf_size = buf_size; 722197ba5f4SPaul Zimmerman } 723197ba5f4SPaul Zimmerman 7245dce9555SPaul Zimmerman if (chan->xfer_len) { 7255dce9555SPaul Zimmerman dev_vdbg(hsotg->dev, "%s(): non-aligned buffer\n", __func__); 7265dce9555SPaul Zimmerman usb_urb = urb->priv; 7275dce9555SPaul Zimmerman 7285dce9555SPaul Zimmerman if (usb_urb) { 7295dce9555SPaul Zimmerman if (usb_urb->transfer_flags & 7305dce9555SPaul Zimmerman (URB_SETUP_MAP_SINGLE | URB_DMA_MAP_SG | 7315dce9555SPaul Zimmerman URB_DMA_MAP_PAGE | URB_DMA_MAP_SINGLE)) { 7325dce9555SPaul Zimmerman hcd = dwc2_hsotg_to_hcd(hsotg); 7335dce9555SPaul Zimmerman usb_hcd_unmap_urb_for_dma(hcd, usb_urb); 7345dce9555SPaul Zimmerman } 7355dce9555SPaul Zimmerman if (!chan->ep_is_in) 7365dce9555SPaul Zimmerman memcpy(qh->dw_align_buf, bufptr, 7375dce9555SPaul Zimmerman chan->xfer_len); 7385dce9555SPaul Zimmerman } else { 7395dce9555SPaul Zimmerman dev_warn(hsotg->dev, "no URB in dwc2_urb\n"); 7405dce9555SPaul Zimmerman } 741197ba5f4SPaul Zimmerman } 742197ba5f4SPaul Zimmerman 743db62b9a8SGregory Herrero qh->dw_align_buf_dma = dma_map_single(hsotg->dev, 744db62b9a8SGregory Herrero qh->dw_align_buf, qh->dw_align_buf_size, 745db62b9a8SGregory Herrero chan->ep_is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); 746db62b9a8SGregory Herrero if (dma_mapping_error(hsotg->dev, qh->dw_align_buf_dma)) { 747db62b9a8SGregory Herrero dev_err(hsotg->dev, "can't map align_buf\n"); 7483521a399SFelipe Balbi chan->align_buf = 0; 749db62b9a8SGregory Herrero return -EINVAL; 750db62b9a8SGregory Herrero } 751db62b9a8SGregory Herrero 752197ba5f4SPaul Zimmerman chan->align_buf = qh->dw_align_buf_dma; 753197ba5f4SPaul Zimmerman return 0; 754197ba5f4SPaul Zimmerman } 755197ba5f4SPaul Zimmerman 756197ba5f4SPaul Zimmerman /** 757197ba5f4SPaul Zimmerman * dwc2_assign_and_init_hc() - Assigns transactions from a QTD to a free host 758197ba5f4SPaul Zimmerman * channel and initializes the host channel to perform the transactions. The 759197ba5f4SPaul Zimmerman * host channel is removed from the free list. 760197ba5f4SPaul Zimmerman * 761197ba5f4SPaul Zimmerman * @hsotg: The HCD state structure 762197ba5f4SPaul Zimmerman * @qh: Transactions from the first QTD for this QH are selected and assigned 763197ba5f4SPaul Zimmerman * to a free host channel 764197ba5f4SPaul Zimmerman */ 765197ba5f4SPaul Zimmerman static int dwc2_assign_and_init_hc(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) 766197ba5f4SPaul Zimmerman { 767197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan; 768197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *urb; 769197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd; 770197ba5f4SPaul Zimmerman void *bufptr = NULL; 771197ba5f4SPaul Zimmerman 772197ba5f4SPaul Zimmerman if (dbg_qh(qh)) 773197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "%s(%p,%p)\n", __func__, hsotg, qh); 774197ba5f4SPaul Zimmerman 775197ba5f4SPaul Zimmerman if (list_empty(&qh->qtd_list)) { 776197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "No QTDs in QH list\n"); 777197ba5f4SPaul Zimmerman return -ENOMEM; 778197ba5f4SPaul Zimmerman } 779197ba5f4SPaul Zimmerman 780197ba5f4SPaul Zimmerman if (list_empty(&hsotg->free_hc_list)) { 781197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "No free channel to assign\n"); 782197ba5f4SPaul Zimmerman return -ENOMEM; 783197ba5f4SPaul Zimmerman } 784197ba5f4SPaul Zimmerman 785197ba5f4SPaul Zimmerman chan = list_first_entry(&hsotg->free_hc_list, struct dwc2_host_chan, 786197ba5f4SPaul Zimmerman hc_list_entry); 787197ba5f4SPaul Zimmerman 788197ba5f4SPaul Zimmerman /* Remove host channel from free list */ 789197ba5f4SPaul Zimmerman list_del_init(&chan->hc_list_entry); 790197ba5f4SPaul Zimmerman 791197ba5f4SPaul Zimmerman qtd = list_first_entry(&qh->qtd_list, struct dwc2_qtd, qtd_list_entry); 792197ba5f4SPaul Zimmerman urb = qtd->urb; 793197ba5f4SPaul Zimmerman qh->channel = chan; 794197ba5f4SPaul Zimmerman qtd->in_process = 1; 795197ba5f4SPaul Zimmerman 796197ba5f4SPaul Zimmerman /* 797197ba5f4SPaul Zimmerman * Use usb_pipedevice to determine device address. This address is 798197ba5f4SPaul Zimmerman * 0 before the SET_ADDRESS command and the correct address afterward. 799197ba5f4SPaul Zimmerman */ 800197ba5f4SPaul Zimmerman chan->dev_addr = dwc2_hcd_get_dev_addr(&urb->pipe_info); 801197ba5f4SPaul Zimmerman chan->ep_num = dwc2_hcd_get_ep_num(&urb->pipe_info); 802197ba5f4SPaul Zimmerman chan->speed = qh->dev_speed; 803197ba5f4SPaul Zimmerman chan->max_packet = dwc2_max_packet(qh->maxp); 804197ba5f4SPaul Zimmerman 805197ba5f4SPaul Zimmerman chan->xfer_started = 0; 806197ba5f4SPaul Zimmerman chan->halt_status = DWC2_HC_XFER_NO_HALT_STATUS; 807197ba5f4SPaul Zimmerman chan->error_state = (qtd->error_count > 0); 808197ba5f4SPaul Zimmerman chan->halt_on_queue = 0; 809197ba5f4SPaul Zimmerman chan->halt_pending = 0; 810197ba5f4SPaul Zimmerman chan->requests = 0; 811197ba5f4SPaul Zimmerman 812197ba5f4SPaul Zimmerman /* 813197ba5f4SPaul Zimmerman * The following values may be modified in the transfer type section 814197ba5f4SPaul Zimmerman * below. The xfer_len value may be reduced when the transfer is 815197ba5f4SPaul Zimmerman * started to accommodate the max widths of the XferSize and PktCnt 816197ba5f4SPaul Zimmerman * fields in the HCTSIZn register. 817197ba5f4SPaul Zimmerman */ 818197ba5f4SPaul Zimmerman 819197ba5f4SPaul Zimmerman chan->ep_is_in = (dwc2_hcd_is_pipe_in(&urb->pipe_info) != 0); 820197ba5f4SPaul Zimmerman if (chan->ep_is_in) 821197ba5f4SPaul Zimmerman chan->do_ping = 0; 822197ba5f4SPaul Zimmerman else 823197ba5f4SPaul Zimmerman chan->do_ping = qh->ping_state; 824197ba5f4SPaul Zimmerman 825197ba5f4SPaul Zimmerman chan->data_pid_start = qh->data_toggle; 826197ba5f4SPaul Zimmerman chan->multi_count = 1; 827197ba5f4SPaul Zimmerman 828197ba5f4SPaul Zimmerman if (urb->actual_length > urb->length && 829197ba5f4SPaul Zimmerman !dwc2_hcd_is_pipe_in(&urb->pipe_info)) 830197ba5f4SPaul Zimmerman urb->actual_length = urb->length; 831197ba5f4SPaul Zimmerman 832197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) { 833197ba5f4SPaul Zimmerman chan->xfer_dma = urb->dma + urb->actual_length; 834197ba5f4SPaul Zimmerman 835197ba5f4SPaul Zimmerman /* For non-dword aligned case */ 836197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_desc_enable <= 0 && 837197ba5f4SPaul Zimmerman (chan->xfer_dma & 0x3)) 838197ba5f4SPaul Zimmerman bufptr = (u8 *)urb->buf + urb->actual_length; 839197ba5f4SPaul Zimmerman } else { 840197ba5f4SPaul Zimmerman chan->xfer_buf = (u8 *)urb->buf + urb->actual_length; 841197ba5f4SPaul Zimmerman } 842197ba5f4SPaul Zimmerman 843197ba5f4SPaul Zimmerman chan->xfer_len = urb->length - urb->actual_length; 844197ba5f4SPaul Zimmerman chan->xfer_count = 0; 845197ba5f4SPaul Zimmerman 846197ba5f4SPaul Zimmerman /* Set the split attributes if required */ 847197ba5f4SPaul Zimmerman if (qh->do_split) 848197ba5f4SPaul Zimmerman dwc2_hc_init_split(hsotg, chan, qtd, urb); 849197ba5f4SPaul Zimmerman else 850197ba5f4SPaul Zimmerman chan->do_split = 0; 851197ba5f4SPaul Zimmerman 852197ba5f4SPaul Zimmerman /* Set the transfer attributes */ 853197ba5f4SPaul Zimmerman bufptr = dwc2_hc_init_xfer(hsotg, chan, qtd, bufptr); 854197ba5f4SPaul Zimmerman 855197ba5f4SPaul Zimmerman /* Non DWORD-aligned buffer case */ 856197ba5f4SPaul Zimmerman if (bufptr) { 857197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "Non-aligned buffer\n"); 8585dce9555SPaul Zimmerman if (dwc2_hc_setup_align_buf(hsotg, qh, chan, urb, bufptr)) { 859197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 860197ba5f4SPaul Zimmerman "%s: Failed to allocate memory to handle non-dword aligned buffer\n", 861197ba5f4SPaul Zimmerman __func__); 862197ba5f4SPaul Zimmerman /* Add channel back to free list */ 863197ba5f4SPaul Zimmerman chan->align_buf = 0; 864197ba5f4SPaul Zimmerman chan->multi_count = 0; 865197ba5f4SPaul Zimmerman list_add_tail(&chan->hc_list_entry, 866197ba5f4SPaul Zimmerman &hsotg->free_hc_list); 867197ba5f4SPaul Zimmerman qtd->in_process = 0; 868197ba5f4SPaul Zimmerman qh->channel = NULL; 869197ba5f4SPaul Zimmerman return -ENOMEM; 870197ba5f4SPaul Zimmerman } 871197ba5f4SPaul Zimmerman } else { 872197ba5f4SPaul Zimmerman chan->align_buf = 0; 873197ba5f4SPaul Zimmerman } 874197ba5f4SPaul Zimmerman 875197ba5f4SPaul Zimmerman if (chan->ep_type == USB_ENDPOINT_XFER_INT || 876197ba5f4SPaul Zimmerman chan->ep_type == USB_ENDPOINT_XFER_ISOC) 877197ba5f4SPaul Zimmerman /* 878197ba5f4SPaul Zimmerman * This value may be modified when the transfer is started 879197ba5f4SPaul Zimmerman * to reflect the actual transfer length 880197ba5f4SPaul Zimmerman */ 881197ba5f4SPaul Zimmerman chan->multi_count = dwc2_hb_mult(qh->maxp); 882197ba5f4SPaul Zimmerman 883197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_desc_enable > 0) 884197ba5f4SPaul Zimmerman chan->desc_list_addr = qh->desc_list_dma; 885197ba5f4SPaul Zimmerman 886197ba5f4SPaul Zimmerman dwc2_hc_init(hsotg, chan); 887197ba5f4SPaul Zimmerman chan->qh = qh; 888197ba5f4SPaul Zimmerman 889197ba5f4SPaul Zimmerman return 0; 890197ba5f4SPaul Zimmerman } 891197ba5f4SPaul Zimmerman 892197ba5f4SPaul Zimmerman /** 893197ba5f4SPaul Zimmerman * dwc2_hcd_select_transactions() - Selects transactions from the HCD transfer 894197ba5f4SPaul Zimmerman * schedule and assigns them to available host channels. Called from the HCD 895197ba5f4SPaul Zimmerman * interrupt handler functions. 896197ba5f4SPaul Zimmerman * 897197ba5f4SPaul Zimmerman * @hsotg: The HCD state structure 898197ba5f4SPaul Zimmerman * 899197ba5f4SPaul Zimmerman * Return: The types of new transactions that were assigned to host channels 900197ba5f4SPaul Zimmerman */ 901197ba5f4SPaul Zimmerman enum dwc2_transaction_type dwc2_hcd_select_transactions( 902197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg) 903197ba5f4SPaul Zimmerman { 904197ba5f4SPaul Zimmerman enum dwc2_transaction_type ret_val = DWC2_TRANSACTION_NONE; 905197ba5f4SPaul Zimmerman struct list_head *qh_ptr; 906197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 907197ba5f4SPaul Zimmerman int num_channels; 908197ba5f4SPaul Zimmerman 909197ba5f4SPaul Zimmerman #ifdef DWC2_DEBUG_SOF 910197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Select Transactions\n"); 911197ba5f4SPaul Zimmerman #endif 912197ba5f4SPaul Zimmerman 913197ba5f4SPaul Zimmerman /* Process entries in the periodic ready list */ 914197ba5f4SPaul Zimmerman qh_ptr = hsotg->periodic_sched_ready.next; 915197ba5f4SPaul Zimmerman while (qh_ptr != &hsotg->periodic_sched_ready) { 916197ba5f4SPaul Zimmerman if (list_empty(&hsotg->free_hc_list)) 917197ba5f4SPaul Zimmerman break; 918197ba5f4SPaul Zimmerman if (hsotg->core_params->uframe_sched > 0) { 919197ba5f4SPaul Zimmerman if (hsotg->available_host_channels <= 1) 920197ba5f4SPaul Zimmerman break; 921197ba5f4SPaul Zimmerman hsotg->available_host_channels--; 922197ba5f4SPaul Zimmerman } 923197ba5f4SPaul Zimmerman qh = list_entry(qh_ptr, struct dwc2_qh, qh_list_entry); 924197ba5f4SPaul Zimmerman if (dwc2_assign_and_init_hc(hsotg, qh)) 925197ba5f4SPaul Zimmerman break; 926197ba5f4SPaul Zimmerman 927197ba5f4SPaul Zimmerman /* 928197ba5f4SPaul Zimmerman * Move the QH from the periodic ready schedule to the 929197ba5f4SPaul Zimmerman * periodic assigned schedule 930197ba5f4SPaul Zimmerman */ 931197ba5f4SPaul Zimmerman qh_ptr = qh_ptr->next; 932197ba5f4SPaul Zimmerman list_move(&qh->qh_list_entry, &hsotg->periodic_sched_assigned); 933197ba5f4SPaul Zimmerman ret_val = DWC2_TRANSACTION_PERIODIC; 934197ba5f4SPaul Zimmerman } 935197ba5f4SPaul Zimmerman 936197ba5f4SPaul Zimmerman /* 937197ba5f4SPaul Zimmerman * Process entries in the inactive portion of the non-periodic 938197ba5f4SPaul Zimmerman * schedule. Some free host channels may not be used if they are 939197ba5f4SPaul Zimmerman * reserved for periodic transfers. 940197ba5f4SPaul Zimmerman */ 941197ba5f4SPaul Zimmerman num_channels = hsotg->core_params->host_channels; 942197ba5f4SPaul Zimmerman qh_ptr = hsotg->non_periodic_sched_inactive.next; 943197ba5f4SPaul Zimmerman while (qh_ptr != &hsotg->non_periodic_sched_inactive) { 944197ba5f4SPaul Zimmerman if (hsotg->core_params->uframe_sched <= 0 && 945197ba5f4SPaul Zimmerman hsotg->non_periodic_channels >= num_channels - 946197ba5f4SPaul Zimmerman hsotg->periodic_channels) 947197ba5f4SPaul Zimmerman break; 948197ba5f4SPaul Zimmerman if (list_empty(&hsotg->free_hc_list)) 949197ba5f4SPaul Zimmerman break; 950197ba5f4SPaul Zimmerman qh = list_entry(qh_ptr, struct dwc2_qh, qh_list_entry); 951197ba5f4SPaul Zimmerman if (hsotg->core_params->uframe_sched > 0) { 952197ba5f4SPaul Zimmerman if (hsotg->available_host_channels < 1) 953197ba5f4SPaul Zimmerman break; 954197ba5f4SPaul Zimmerman hsotg->available_host_channels--; 955197ba5f4SPaul Zimmerman } 956197ba5f4SPaul Zimmerman 957197ba5f4SPaul Zimmerman if (dwc2_assign_and_init_hc(hsotg, qh)) 958197ba5f4SPaul Zimmerman break; 959197ba5f4SPaul Zimmerman 960197ba5f4SPaul Zimmerman /* 961197ba5f4SPaul Zimmerman * Move the QH from the non-periodic inactive schedule to the 962197ba5f4SPaul Zimmerman * non-periodic active schedule 963197ba5f4SPaul Zimmerman */ 964197ba5f4SPaul Zimmerman qh_ptr = qh_ptr->next; 965197ba5f4SPaul Zimmerman list_move(&qh->qh_list_entry, 966197ba5f4SPaul Zimmerman &hsotg->non_periodic_sched_active); 967197ba5f4SPaul Zimmerman 968197ba5f4SPaul Zimmerman if (ret_val == DWC2_TRANSACTION_NONE) 969197ba5f4SPaul Zimmerman ret_val = DWC2_TRANSACTION_NON_PERIODIC; 970197ba5f4SPaul Zimmerman else 971197ba5f4SPaul Zimmerman ret_val = DWC2_TRANSACTION_ALL; 972197ba5f4SPaul Zimmerman 973197ba5f4SPaul Zimmerman if (hsotg->core_params->uframe_sched <= 0) 974197ba5f4SPaul Zimmerman hsotg->non_periodic_channels++; 975197ba5f4SPaul Zimmerman } 976197ba5f4SPaul Zimmerman 977197ba5f4SPaul Zimmerman return ret_val; 978197ba5f4SPaul Zimmerman } 979197ba5f4SPaul Zimmerman 980197ba5f4SPaul Zimmerman /** 981197ba5f4SPaul Zimmerman * dwc2_queue_transaction() - Attempts to queue a single transaction request for 982197ba5f4SPaul Zimmerman * a host channel associated with either a periodic or non-periodic transfer 983197ba5f4SPaul Zimmerman * 984197ba5f4SPaul Zimmerman * @hsotg: The HCD state structure 985197ba5f4SPaul Zimmerman * @chan: Host channel descriptor associated with either a periodic or 986197ba5f4SPaul Zimmerman * non-periodic transfer 987197ba5f4SPaul Zimmerman * @fifo_dwords_avail: Number of DWORDs available in the periodic Tx FIFO 988197ba5f4SPaul Zimmerman * for periodic transfers or the non-periodic Tx FIFO 989197ba5f4SPaul Zimmerman * for non-periodic transfers 990197ba5f4SPaul Zimmerman * 991197ba5f4SPaul Zimmerman * Return: 1 if a request is queued and more requests may be needed to 992197ba5f4SPaul Zimmerman * complete the transfer, 0 if no more requests are required for this 993197ba5f4SPaul Zimmerman * transfer, -1 if there is insufficient space in the Tx FIFO 994197ba5f4SPaul Zimmerman * 995197ba5f4SPaul Zimmerman * This function assumes that there is space available in the appropriate 996197ba5f4SPaul Zimmerman * request queue. For an OUT transfer or SETUP transaction in Slave mode, 997197ba5f4SPaul Zimmerman * it checks whether space is available in the appropriate Tx FIFO. 998197ba5f4SPaul Zimmerman * 999197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 1000197ba5f4SPaul Zimmerman */ 1001197ba5f4SPaul Zimmerman static int dwc2_queue_transaction(struct dwc2_hsotg *hsotg, 1002197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan, 1003197ba5f4SPaul Zimmerman u16 fifo_dwords_avail) 1004197ba5f4SPaul Zimmerman { 1005197ba5f4SPaul Zimmerman int retval = 0; 1006197ba5f4SPaul Zimmerman 1007197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) { 1008197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_desc_enable > 0) { 1009197ba5f4SPaul Zimmerman if (!chan->xfer_started || 1010197ba5f4SPaul Zimmerman chan->ep_type == USB_ENDPOINT_XFER_ISOC) { 1011197ba5f4SPaul Zimmerman dwc2_hcd_start_xfer_ddma(hsotg, chan->qh); 1012197ba5f4SPaul Zimmerman chan->qh->ping_state = 0; 1013197ba5f4SPaul Zimmerman } 1014197ba5f4SPaul Zimmerman } else if (!chan->xfer_started) { 1015197ba5f4SPaul Zimmerman dwc2_hc_start_transfer(hsotg, chan); 1016197ba5f4SPaul Zimmerman chan->qh->ping_state = 0; 1017197ba5f4SPaul Zimmerman } 1018197ba5f4SPaul Zimmerman } else if (chan->halt_pending) { 1019197ba5f4SPaul Zimmerman /* Don't queue a request if the channel has been halted */ 1020197ba5f4SPaul Zimmerman } else if (chan->halt_on_queue) { 1021197ba5f4SPaul Zimmerman dwc2_hc_halt(hsotg, chan, chan->halt_status); 1022197ba5f4SPaul Zimmerman } else if (chan->do_ping) { 1023197ba5f4SPaul Zimmerman if (!chan->xfer_started) 1024197ba5f4SPaul Zimmerman dwc2_hc_start_transfer(hsotg, chan); 1025197ba5f4SPaul Zimmerman } else if (!chan->ep_is_in || 1026197ba5f4SPaul Zimmerman chan->data_pid_start == DWC2_HC_PID_SETUP) { 1027197ba5f4SPaul Zimmerman if ((fifo_dwords_avail * 4) >= chan->max_packet) { 1028197ba5f4SPaul Zimmerman if (!chan->xfer_started) { 1029197ba5f4SPaul Zimmerman dwc2_hc_start_transfer(hsotg, chan); 1030197ba5f4SPaul Zimmerman retval = 1; 1031197ba5f4SPaul Zimmerman } else { 1032197ba5f4SPaul Zimmerman retval = dwc2_hc_continue_transfer(hsotg, chan); 1033197ba5f4SPaul Zimmerman } 1034197ba5f4SPaul Zimmerman } else { 1035197ba5f4SPaul Zimmerman retval = -1; 1036197ba5f4SPaul Zimmerman } 1037197ba5f4SPaul Zimmerman } else { 1038197ba5f4SPaul Zimmerman if (!chan->xfer_started) { 1039197ba5f4SPaul Zimmerman dwc2_hc_start_transfer(hsotg, chan); 1040197ba5f4SPaul Zimmerman retval = 1; 1041197ba5f4SPaul Zimmerman } else { 1042197ba5f4SPaul Zimmerman retval = dwc2_hc_continue_transfer(hsotg, chan); 1043197ba5f4SPaul Zimmerman } 1044197ba5f4SPaul Zimmerman } 1045197ba5f4SPaul Zimmerman 1046197ba5f4SPaul Zimmerman return retval; 1047197ba5f4SPaul Zimmerman } 1048197ba5f4SPaul Zimmerman 1049197ba5f4SPaul Zimmerman /* 1050197ba5f4SPaul Zimmerman * Processes periodic channels for the next frame and queues transactions for 1051197ba5f4SPaul Zimmerman * these channels to the DWC_otg controller. After queueing transactions, the 1052197ba5f4SPaul Zimmerman * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions 1053197ba5f4SPaul Zimmerman * to queue as Periodic Tx FIFO or request queue space becomes available. 1054197ba5f4SPaul Zimmerman * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled. 1055197ba5f4SPaul Zimmerman * 1056197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 1057197ba5f4SPaul Zimmerman */ 1058197ba5f4SPaul Zimmerman static void dwc2_process_periodic_channels(struct dwc2_hsotg *hsotg) 1059197ba5f4SPaul Zimmerman { 1060197ba5f4SPaul Zimmerman struct list_head *qh_ptr; 1061197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 1062197ba5f4SPaul Zimmerman u32 tx_status; 1063197ba5f4SPaul Zimmerman u32 fspcavail; 1064197ba5f4SPaul Zimmerman u32 gintmsk; 1065197ba5f4SPaul Zimmerman int status; 1066197ba5f4SPaul Zimmerman int no_queue_space = 0; 1067197ba5f4SPaul Zimmerman int no_fifo_space = 0; 1068197ba5f4SPaul Zimmerman u32 qspcavail; 1069197ba5f4SPaul Zimmerman 1070197ba5f4SPaul Zimmerman if (dbg_perio()) 1071197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "Queue periodic transactions\n"); 1072197ba5f4SPaul Zimmerman 107395c8bc36SAntti Seppälä tx_status = dwc2_readl(hsotg->regs + HPTXSTS); 1074197ba5f4SPaul Zimmerman qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >> 1075197ba5f4SPaul Zimmerman TXSTS_QSPCAVAIL_SHIFT; 1076197ba5f4SPaul Zimmerman fspcavail = (tx_status & TXSTS_FSPCAVAIL_MASK) >> 1077197ba5f4SPaul Zimmerman TXSTS_FSPCAVAIL_SHIFT; 1078197ba5f4SPaul Zimmerman 1079197ba5f4SPaul Zimmerman if (dbg_perio()) { 1080197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " P Tx Req Queue Space Avail (before queue): %d\n", 1081197ba5f4SPaul Zimmerman qspcavail); 1082197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " P Tx FIFO Space Avail (before queue): %d\n", 1083197ba5f4SPaul Zimmerman fspcavail); 1084197ba5f4SPaul Zimmerman } 1085197ba5f4SPaul Zimmerman 1086197ba5f4SPaul Zimmerman qh_ptr = hsotg->periodic_sched_assigned.next; 1087197ba5f4SPaul Zimmerman while (qh_ptr != &hsotg->periodic_sched_assigned) { 108895c8bc36SAntti Seppälä tx_status = dwc2_readl(hsotg->regs + HPTXSTS); 1089197ba5f4SPaul Zimmerman qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >> 1090197ba5f4SPaul Zimmerman TXSTS_QSPCAVAIL_SHIFT; 1091197ba5f4SPaul Zimmerman if (qspcavail == 0) { 1092197ba5f4SPaul Zimmerman no_queue_space = 1; 1093197ba5f4SPaul Zimmerman break; 1094197ba5f4SPaul Zimmerman } 1095197ba5f4SPaul Zimmerman 1096197ba5f4SPaul Zimmerman qh = list_entry(qh_ptr, struct dwc2_qh, qh_list_entry); 1097197ba5f4SPaul Zimmerman if (!qh->channel) { 1098197ba5f4SPaul Zimmerman qh_ptr = qh_ptr->next; 1099197ba5f4SPaul Zimmerman continue; 1100197ba5f4SPaul Zimmerman } 1101197ba5f4SPaul Zimmerman 1102197ba5f4SPaul Zimmerman /* Make sure EP's TT buffer is clean before queueing qtds */ 1103197ba5f4SPaul Zimmerman if (qh->tt_buffer_dirty) { 1104197ba5f4SPaul Zimmerman qh_ptr = qh_ptr->next; 1105197ba5f4SPaul Zimmerman continue; 1106197ba5f4SPaul Zimmerman } 1107197ba5f4SPaul Zimmerman 1108197ba5f4SPaul Zimmerman /* 1109197ba5f4SPaul Zimmerman * Set a flag if we're queuing high-bandwidth in slave mode. 1110197ba5f4SPaul Zimmerman * The flag prevents any halts to get into the request queue in 1111197ba5f4SPaul Zimmerman * the middle of multiple high-bandwidth packets getting queued. 1112197ba5f4SPaul Zimmerman */ 1113197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable <= 0 && 1114197ba5f4SPaul Zimmerman qh->channel->multi_count > 1) 1115197ba5f4SPaul Zimmerman hsotg->queuing_high_bandwidth = 1; 1116197ba5f4SPaul Zimmerman 1117197ba5f4SPaul Zimmerman fspcavail = (tx_status & TXSTS_FSPCAVAIL_MASK) >> 1118197ba5f4SPaul Zimmerman TXSTS_FSPCAVAIL_SHIFT; 1119197ba5f4SPaul Zimmerman status = dwc2_queue_transaction(hsotg, qh->channel, fspcavail); 1120197ba5f4SPaul Zimmerman if (status < 0) { 1121197ba5f4SPaul Zimmerman no_fifo_space = 1; 1122197ba5f4SPaul Zimmerman break; 1123197ba5f4SPaul Zimmerman } 1124197ba5f4SPaul Zimmerman 1125197ba5f4SPaul Zimmerman /* 1126197ba5f4SPaul Zimmerman * In Slave mode, stay on the current transfer until there is 1127197ba5f4SPaul Zimmerman * nothing more to do or the high-bandwidth request count is 1128197ba5f4SPaul Zimmerman * reached. In DMA mode, only need to queue one request. The 1129197ba5f4SPaul Zimmerman * controller automatically handles multiple packets for 1130197ba5f4SPaul Zimmerman * high-bandwidth transfers. 1131197ba5f4SPaul Zimmerman */ 1132197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0 || status == 0 || 1133197ba5f4SPaul Zimmerman qh->channel->requests == qh->channel->multi_count) { 1134197ba5f4SPaul Zimmerman qh_ptr = qh_ptr->next; 1135197ba5f4SPaul Zimmerman /* 1136197ba5f4SPaul Zimmerman * Move the QH from the periodic assigned schedule to 1137197ba5f4SPaul Zimmerman * the periodic queued schedule 1138197ba5f4SPaul Zimmerman */ 1139197ba5f4SPaul Zimmerman list_move(&qh->qh_list_entry, 1140197ba5f4SPaul Zimmerman &hsotg->periodic_sched_queued); 1141197ba5f4SPaul Zimmerman 1142197ba5f4SPaul Zimmerman /* done queuing high bandwidth */ 1143197ba5f4SPaul Zimmerman hsotg->queuing_high_bandwidth = 0; 1144197ba5f4SPaul Zimmerman } 1145197ba5f4SPaul Zimmerman } 1146197ba5f4SPaul Zimmerman 1147197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable <= 0) { 114895c8bc36SAntti Seppälä tx_status = dwc2_readl(hsotg->regs + HPTXSTS); 1149197ba5f4SPaul Zimmerman qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >> 1150197ba5f4SPaul Zimmerman TXSTS_QSPCAVAIL_SHIFT; 1151197ba5f4SPaul Zimmerman fspcavail = (tx_status & TXSTS_FSPCAVAIL_MASK) >> 1152197ba5f4SPaul Zimmerman TXSTS_FSPCAVAIL_SHIFT; 1153197ba5f4SPaul Zimmerman if (dbg_perio()) { 1154197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 1155197ba5f4SPaul Zimmerman " P Tx Req Queue Space Avail (after queue): %d\n", 1156197ba5f4SPaul Zimmerman qspcavail); 1157197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 1158197ba5f4SPaul Zimmerman " P Tx FIFO Space Avail (after queue): %d\n", 1159197ba5f4SPaul Zimmerman fspcavail); 1160197ba5f4SPaul Zimmerman } 1161197ba5f4SPaul Zimmerman 1162197ba5f4SPaul Zimmerman if (!list_empty(&hsotg->periodic_sched_assigned) || 1163197ba5f4SPaul Zimmerman no_queue_space || no_fifo_space) { 1164197ba5f4SPaul Zimmerman /* 1165197ba5f4SPaul Zimmerman * May need to queue more transactions as the request 1166197ba5f4SPaul Zimmerman * queue or Tx FIFO empties. Enable the periodic Tx 1167197ba5f4SPaul Zimmerman * FIFO empty interrupt. (Always use the half-empty 1168197ba5f4SPaul Zimmerman * level to ensure that new requests are loaded as 1169197ba5f4SPaul Zimmerman * soon as possible.) 1170197ba5f4SPaul Zimmerman */ 117195c8bc36SAntti Seppälä gintmsk = dwc2_readl(hsotg->regs + GINTMSK); 1172197ba5f4SPaul Zimmerman gintmsk |= GINTSTS_PTXFEMP; 117395c8bc36SAntti Seppälä dwc2_writel(gintmsk, hsotg->regs + GINTMSK); 1174197ba5f4SPaul Zimmerman } else { 1175197ba5f4SPaul Zimmerman /* 1176197ba5f4SPaul Zimmerman * Disable the Tx FIFO empty interrupt since there are 1177197ba5f4SPaul Zimmerman * no more transactions that need to be queued right 1178197ba5f4SPaul Zimmerman * now. This function is called from interrupt 1179197ba5f4SPaul Zimmerman * handlers to queue more transactions as transfer 1180197ba5f4SPaul Zimmerman * states change. 1181197ba5f4SPaul Zimmerman */ 118295c8bc36SAntti Seppälä gintmsk = dwc2_readl(hsotg->regs + GINTMSK); 1183197ba5f4SPaul Zimmerman gintmsk &= ~GINTSTS_PTXFEMP; 118495c8bc36SAntti Seppälä dwc2_writel(gintmsk, hsotg->regs + GINTMSK); 1185197ba5f4SPaul Zimmerman } 1186197ba5f4SPaul Zimmerman } 1187197ba5f4SPaul Zimmerman } 1188197ba5f4SPaul Zimmerman 1189197ba5f4SPaul Zimmerman /* 1190197ba5f4SPaul Zimmerman * Processes active non-periodic channels and queues transactions for these 1191197ba5f4SPaul Zimmerman * channels to the DWC_otg controller. After queueing transactions, the NP Tx 1192197ba5f4SPaul Zimmerman * FIFO Empty interrupt is enabled if there are more transactions to queue as 1193197ba5f4SPaul Zimmerman * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx 1194197ba5f4SPaul Zimmerman * FIFO Empty interrupt is disabled. 1195197ba5f4SPaul Zimmerman * 1196197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 1197197ba5f4SPaul Zimmerman */ 1198197ba5f4SPaul Zimmerman static void dwc2_process_non_periodic_channels(struct dwc2_hsotg *hsotg) 1199197ba5f4SPaul Zimmerman { 1200197ba5f4SPaul Zimmerman struct list_head *orig_qh_ptr; 1201197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 1202197ba5f4SPaul Zimmerman u32 tx_status; 1203197ba5f4SPaul Zimmerman u32 qspcavail; 1204197ba5f4SPaul Zimmerman u32 fspcavail; 1205197ba5f4SPaul Zimmerman u32 gintmsk; 1206197ba5f4SPaul Zimmerman int status; 1207197ba5f4SPaul Zimmerman int no_queue_space = 0; 1208197ba5f4SPaul Zimmerman int no_fifo_space = 0; 1209197ba5f4SPaul Zimmerman int more_to_do = 0; 1210197ba5f4SPaul Zimmerman 1211197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "Queue non-periodic transactions\n"); 1212197ba5f4SPaul Zimmerman 121395c8bc36SAntti Seppälä tx_status = dwc2_readl(hsotg->regs + GNPTXSTS); 1214197ba5f4SPaul Zimmerman qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >> 1215197ba5f4SPaul Zimmerman TXSTS_QSPCAVAIL_SHIFT; 1216197ba5f4SPaul Zimmerman fspcavail = (tx_status & TXSTS_FSPCAVAIL_MASK) >> 1217197ba5f4SPaul Zimmerman TXSTS_FSPCAVAIL_SHIFT; 1218197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " NP Tx Req Queue Space Avail (before queue): %d\n", 1219197ba5f4SPaul Zimmerman qspcavail); 1220197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " NP Tx FIFO Space Avail (before queue): %d\n", 1221197ba5f4SPaul Zimmerman fspcavail); 1222197ba5f4SPaul Zimmerman 1223197ba5f4SPaul Zimmerman /* 1224197ba5f4SPaul Zimmerman * Keep track of the starting point. Skip over the start-of-list 1225197ba5f4SPaul Zimmerman * entry. 1226197ba5f4SPaul Zimmerman */ 1227197ba5f4SPaul Zimmerman if (hsotg->non_periodic_qh_ptr == &hsotg->non_periodic_sched_active) 1228197ba5f4SPaul Zimmerman hsotg->non_periodic_qh_ptr = hsotg->non_periodic_qh_ptr->next; 1229197ba5f4SPaul Zimmerman orig_qh_ptr = hsotg->non_periodic_qh_ptr; 1230197ba5f4SPaul Zimmerman 1231197ba5f4SPaul Zimmerman /* 1232197ba5f4SPaul Zimmerman * Process once through the active list or until no more space is 1233197ba5f4SPaul Zimmerman * available in the request queue or the Tx FIFO 1234197ba5f4SPaul Zimmerman */ 1235197ba5f4SPaul Zimmerman do { 123695c8bc36SAntti Seppälä tx_status = dwc2_readl(hsotg->regs + GNPTXSTS); 1237197ba5f4SPaul Zimmerman qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >> 1238197ba5f4SPaul Zimmerman TXSTS_QSPCAVAIL_SHIFT; 1239197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable <= 0 && qspcavail == 0) { 1240197ba5f4SPaul Zimmerman no_queue_space = 1; 1241197ba5f4SPaul Zimmerman break; 1242197ba5f4SPaul Zimmerman } 1243197ba5f4SPaul Zimmerman 1244197ba5f4SPaul Zimmerman qh = list_entry(hsotg->non_periodic_qh_ptr, struct dwc2_qh, 1245197ba5f4SPaul Zimmerman qh_list_entry); 1246197ba5f4SPaul Zimmerman if (!qh->channel) 1247197ba5f4SPaul Zimmerman goto next; 1248197ba5f4SPaul Zimmerman 1249197ba5f4SPaul Zimmerman /* Make sure EP's TT buffer is clean before queueing qtds */ 1250197ba5f4SPaul Zimmerman if (qh->tt_buffer_dirty) 1251197ba5f4SPaul Zimmerman goto next; 1252197ba5f4SPaul Zimmerman 1253197ba5f4SPaul Zimmerman fspcavail = (tx_status & TXSTS_FSPCAVAIL_MASK) >> 1254197ba5f4SPaul Zimmerman TXSTS_FSPCAVAIL_SHIFT; 1255197ba5f4SPaul Zimmerman status = dwc2_queue_transaction(hsotg, qh->channel, fspcavail); 1256197ba5f4SPaul Zimmerman 1257197ba5f4SPaul Zimmerman if (status > 0) { 1258197ba5f4SPaul Zimmerman more_to_do = 1; 1259197ba5f4SPaul Zimmerman } else if (status < 0) { 1260197ba5f4SPaul Zimmerman no_fifo_space = 1; 1261197ba5f4SPaul Zimmerman break; 1262197ba5f4SPaul Zimmerman } 1263197ba5f4SPaul Zimmerman next: 1264197ba5f4SPaul Zimmerman /* Advance to next QH, skipping start-of-list entry */ 1265197ba5f4SPaul Zimmerman hsotg->non_periodic_qh_ptr = hsotg->non_periodic_qh_ptr->next; 1266197ba5f4SPaul Zimmerman if (hsotg->non_periodic_qh_ptr == 1267197ba5f4SPaul Zimmerman &hsotg->non_periodic_sched_active) 1268197ba5f4SPaul Zimmerman hsotg->non_periodic_qh_ptr = 1269197ba5f4SPaul Zimmerman hsotg->non_periodic_qh_ptr->next; 1270197ba5f4SPaul Zimmerman } while (hsotg->non_periodic_qh_ptr != orig_qh_ptr); 1271197ba5f4SPaul Zimmerman 1272197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable <= 0) { 127395c8bc36SAntti Seppälä tx_status = dwc2_readl(hsotg->regs + GNPTXSTS); 1274197ba5f4SPaul Zimmerman qspcavail = (tx_status & TXSTS_QSPCAVAIL_MASK) >> 1275197ba5f4SPaul Zimmerman TXSTS_QSPCAVAIL_SHIFT; 1276197ba5f4SPaul Zimmerman fspcavail = (tx_status & TXSTS_FSPCAVAIL_MASK) >> 1277197ba5f4SPaul Zimmerman TXSTS_FSPCAVAIL_SHIFT; 1278197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 1279197ba5f4SPaul Zimmerman " NP Tx Req Queue Space Avail (after queue): %d\n", 1280197ba5f4SPaul Zimmerman qspcavail); 1281197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 1282197ba5f4SPaul Zimmerman " NP Tx FIFO Space Avail (after queue): %d\n", 1283197ba5f4SPaul Zimmerman fspcavail); 1284197ba5f4SPaul Zimmerman 1285197ba5f4SPaul Zimmerman if (more_to_do || no_queue_space || no_fifo_space) { 1286197ba5f4SPaul Zimmerman /* 1287197ba5f4SPaul Zimmerman * May need to queue more transactions as the request 1288197ba5f4SPaul Zimmerman * queue or Tx FIFO empties. Enable the non-periodic 1289197ba5f4SPaul Zimmerman * Tx FIFO empty interrupt. (Always use the half-empty 1290197ba5f4SPaul Zimmerman * level to ensure that new requests are loaded as 1291197ba5f4SPaul Zimmerman * soon as possible.) 1292197ba5f4SPaul Zimmerman */ 129395c8bc36SAntti Seppälä gintmsk = dwc2_readl(hsotg->regs + GINTMSK); 1294197ba5f4SPaul Zimmerman gintmsk |= GINTSTS_NPTXFEMP; 129595c8bc36SAntti Seppälä dwc2_writel(gintmsk, hsotg->regs + GINTMSK); 1296197ba5f4SPaul Zimmerman } else { 1297197ba5f4SPaul Zimmerman /* 1298197ba5f4SPaul Zimmerman * Disable the Tx FIFO empty interrupt since there are 1299197ba5f4SPaul Zimmerman * no more transactions that need to be queued right 1300197ba5f4SPaul Zimmerman * now. This function is called from interrupt 1301197ba5f4SPaul Zimmerman * handlers to queue more transactions as transfer 1302197ba5f4SPaul Zimmerman * states change. 1303197ba5f4SPaul Zimmerman */ 130495c8bc36SAntti Seppälä gintmsk = dwc2_readl(hsotg->regs + GINTMSK); 1305197ba5f4SPaul Zimmerman gintmsk &= ~GINTSTS_NPTXFEMP; 130695c8bc36SAntti Seppälä dwc2_writel(gintmsk, hsotg->regs + GINTMSK); 1307197ba5f4SPaul Zimmerman } 1308197ba5f4SPaul Zimmerman } 1309197ba5f4SPaul Zimmerman } 1310197ba5f4SPaul Zimmerman 1311197ba5f4SPaul Zimmerman /** 1312197ba5f4SPaul Zimmerman * dwc2_hcd_queue_transactions() - Processes the currently active host channels 1313197ba5f4SPaul Zimmerman * and queues transactions for these channels to the DWC_otg controller. Called 1314197ba5f4SPaul Zimmerman * from the HCD interrupt handler functions. 1315197ba5f4SPaul Zimmerman * 1316197ba5f4SPaul Zimmerman * @hsotg: The HCD state structure 1317197ba5f4SPaul Zimmerman * @tr_type: The type(s) of transactions to queue (non-periodic, periodic, 1318197ba5f4SPaul Zimmerman * or both) 1319197ba5f4SPaul Zimmerman * 1320197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 1321197ba5f4SPaul Zimmerman */ 1322197ba5f4SPaul Zimmerman void dwc2_hcd_queue_transactions(struct dwc2_hsotg *hsotg, 1323197ba5f4SPaul Zimmerman enum dwc2_transaction_type tr_type) 1324197ba5f4SPaul Zimmerman { 1325197ba5f4SPaul Zimmerman #ifdef DWC2_DEBUG_SOF 1326197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "Queue Transactions\n"); 1327197ba5f4SPaul Zimmerman #endif 1328197ba5f4SPaul Zimmerman /* Process host channels associated with periodic transfers */ 1329197ba5f4SPaul Zimmerman if ((tr_type == DWC2_TRANSACTION_PERIODIC || 1330197ba5f4SPaul Zimmerman tr_type == DWC2_TRANSACTION_ALL) && 1331197ba5f4SPaul Zimmerman !list_empty(&hsotg->periodic_sched_assigned)) 1332197ba5f4SPaul Zimmerman dwc2_process_periodic_channels(hsotg); 1333197ba5f4SPaul Zimmerman 1334197ba5f4SPaul Zimmerman /* Process host channels associated with non-periodic transfers */ 1335197ba5f4SPaul Zimmerman if (tr_type == DWC2_TRANSACTION_NON_PERIODIC || 1336197ba5f4SPaul Zimmerman tr_type == DWC2_TRANSACTION_ALL) { 1337197ba5f4SPaul Zimmerman if (!list_empty(&hsotg->non_periodic_sched_active)) { 1338197ba5f4SPaul Zimmerman dwc2_process_non_periodic_channels(hsotg); 1339197ba5f4SPaul Zimmerman } else { 1340197ba5f4SPaul Zimmerman /* 1341197ba5f4SPaul Zimmerman * Ensure NP Tx FIFO empty interrupt is disabled when 1342197ba5f4SPaul Zimmerman * there are no non-periodic transfers to process 1343197ba5f4SPaul Zimmerman */ 134495c8bc36SAntti Seppälä u32 gintmsk = dwc2_readl(hsotg->regs + GINTMSK); 1345197ba5f4SPaul Zimmerman 1346197ba5f4SPaul Zimmerman gintmsk &= ~GINTSTS_NPTXFEMP; 134795c8bc36SAntti Seppälä dwc2_writel(gintmsk, hsotg->regs + GINTMSK); 1348197ba5f4SPaul Zimmerman } 1349197ba5f4SPaul Zimmerman } 1350197ba5f4SPaul Zimmerman } 1351197ba5f4SPaul Zimmerman 1352197ba5f4SPaul Zimmerman static void dwc2_conn_id_status_change(struct work_struct *work) 1353197ba5f4SPaul Zimmerman { 1354197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = container_of(work, struct dwc2_hsotg, 1355197ba5f4SPaul Zimmerman wf_otg); 1356197ba5f4SPaul Zimmerman u32 count = 0; 1357197ba5f4SPaul Zimmerman u32 gotgctl; 1358197ba5f4SPaul Zimmerman 1359197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "%s()\n", __func__); 1360197ba5f4SPaul Zimmerman 136195c8bc36SAntti Seppälä gotgctl = dwc2_readl(hsotg->regs + GOTGCTL); 1362197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "gotgctl=%0x\n", gotgctl); 1363197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "gotgctl.b.conidsts=%d\n", 1364197ba5f4SPaul Zimmerman !!(gotgctl & GOTGCTL_CONID_B)); 1365197ba5f4SPaul Zimmerman 1366197ba5f4SPaul Zimmerman /* B-Device connector (Device Mode) */ 1367197ba5f4SPaul Zimmerman if (gotgctl & GOTGCTL_CONID_B) { 1368197ba5f4SPaul Zimmerman /* Wait for switch to device mode */ 1369197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "connId B\n"); 1370197ba5f4SPaul Zimmerman while (!dwc2_is_device_mode(hsotg)) { 1371197ba5f4SPaul Zimmerman dev_info(hsotg->dev, 1372197ba5f4SPaul Zimmerman "Waiting for Peripheral Mode, Mode=%s\n", 1373197ba5f4SPaul Zimmerman dwc2_is_host_mode(hsotg) ? "Host" : 1374197ba5f4SPaul Zimmerman "Peripheral"); 1375197ba5f4SPaul Zimmerman usleep_range(20000, 40000); 1376197ba5f4SPaul Zimmerman if (++count > 250) 1377197ba5f4SPaul Zimmerman break; 1378197ba5f4SPaul Zimmerman } 1379197ba5f4SPaul Zimmerman if (count > 250) 1380197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 1381197ba5f4SPaul Zimmerman "Connection id status change timed out\n"); 1382197ba5f4SPaul Zimmerman hsotg->op_state = OTG_STATE_B_PERIPHERAL; 1383197ba5f4SPaul Zimmerman dwc2_core_init(hsotg, false, -1); 1384197ba5f4SPaul Zimmerman dwc2_enable_global_interrupts(hsotg); 13851f91b4ccSFelipe Balbi dwc2_hsotg_core_init_disconnected(hsotg, false); 13861f91b4ccSFelipe Balbi dwc2_hsotg_core_connect(hsotg); 1387197ba5f4SPaul Zimmerman } else { 1388197ba5f4SPaul Zimmerman /* A-Device connector (Host Mode) */ 1389197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "connId A\n"); 1390197ba5f4SPaul Zimmerman while (!dwc2_is_host_mode(hsotg)) { 1391197ba5f4SPaul Zimmerman dev_info(hsotg->dev, "Waiting for Host Mode, Mode=%s\n", 1392197ba5f4SPaul Zimmerman dwc2_is_host_mode(hsotg) ? 1393197ba5f4SPaul Zimmerman "Host" : "Peripheral"); 1394197ba5f4SPaul Zimmerman usleep_range(20000, 40000); 1395197ba5f4SPaul Zimmerman if (++count > 250) 1396197ba5f4SPaul Zimmerman break; 1397197ba5f4SPaul Zimmerman } 1398197ba5f4SPaul Zimmerman if (count > 250) 1399197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 1400197ba5f4SPaul Zimmerman "Connection id status change timed out\n"); 1401197ba5f4SPaul Zimmerman hsotg->op_state = OTG_STATE_A_HOST; 1402197ba5f4SPaul Zimmerman 1403197ba5f4SPaul Zimmerman /* Initialize the Core for Host mode */ 1404197ba5f4SPaul Zimmerman dwc2_core_init(hsotg, false, -1); 1405197ba5f4SPaul Zimmerman dwc2_enable_global_interrupts(hsotg); 1406197ba5f4SPaul Zimmerman dwc2_hcd_start(hsotg); 1407197ba5f4SPaul Zimmerman } 1408197ba5f4SPaul Zimmerman } 1409197ba5f4SPaul Zimmerman 1410197ba5f4SPaul Zimmerman static void dwc2_wakeup_detected(unsigned long data) 1411197ba5f4SPaul Zimmerman { 1412197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = (struct dwc2_hsotg *)data; 1413197ba5f4SPaul Zimmerman u32 hprt0; 1414197ba5f4SPaul Zimmerman 1415197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "%s()\n", __func__); 1416197ba5f4SPaul Zimmerman 1417197ba5f4SPaul Zimmerman /* 1418197ba5f4SPaul Zimmerman * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms 1419197ba5f4SPaul Zimmerman * so that OPT tests pass with all PHYs.) 1420197ba5f4SPaul Zimmerman */ 1421197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1422197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Resume: HPRT0=%0x\n", hprt0); 1423197ba5f4SPaul Zimmerman hprt0 &= ~HPRT0_RES; 142495c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1425197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Clear Resume: HPRT0=%0x\n", 142695c8bc36SAntti Seppälä dwc2_readl(hsotg->regs + HPRT0)); 1427197ba5f4SPaul Zimmerman 1428734643dfSGregory Herrero hsotg->bus_suspended = 0; 1429197ba5f4SPaul Zimmerman dwc2_hcd_rem_wakeup(hsotg); 1430197ba5f4SPaul Zimmerman 1431197ba5f4SPaul Zimmerman /* Change to L0 state */ 1432197ba5f4SPaul Zimmerman hsotg->lx_state = DWC2_L0; 1433197ba5f4SPaul Zimmerman } 1434197ba5f4SPaul Zimmerman 1435197ba5f4SPaul Zimmerman static int dwc2_host_is_b_hnp_enabled(struct dwc2_hsotg *hsotg) 1436197ba5f4SPaul Zimmerman { 1437197ba5f4SPaul Zimmerman struct usb_hcd *hcd = dwc2_hsotg_to_hcd(hsotg); 1438197ba5f4SPaul Zimmerman 1439197ba5f4SPaul Zimmerman return hcd->self.b_hnp_enable; 1440197ba5f4SPaul Zimmerman } 1441197ba5f4SPaul Zimmerman 1442197ba5f4SPaul Zimmerman /* Must NOT be called with interrupt disabled or spinlock held */ 1443197ba5f4SPaul Zimmerman static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) 1444197ba5f4SPaul Zimmerman { 1445197ba5f4SPaul Zimmerman unsigned long flags; 1446197ba5f4SPaul Zimmerman u32 hprt0; 1447197ba5f4SPaul Zimmerman u32 pcgctl; 1448197ba5f4SPaul Zimmerman u32 gotgctl; 1449197ba5f4SPaul Zimmerman 1450197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "%s()\n", __func__); 1451197ba5f4SPaul Zimmerman 1452197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 1453197ba5f4SPaul Zimmerman 1454197ba5f4SPaul Zimmerman if (windex == hsotg->otg_port && dwc2_host_is_b_hnp_enabled(hsotg)) { 145595c8bc36SAntti Seppälä gotgctl = dwc2_readl(hsotg->regs + GOTGCTL); 1456197ba5f4SPaul Zimmerman gotgctl |= GOTGCTL_HSTSETHNPEN; 145795c8bc36SAntti Seppälä dwc2_writel(gotgctl, hsotg->regs + GOTGCTL); 1458197ba5f4SPaul Zimmerman hsotg->op_state = OTG_STATE_A_SUSPEND; 1459197ba5f4SPaul Zimmerman } 1460197ba5f4SPaul Zimmerman 1461197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1462197ba5f4SPaul Zimmerman hprt0 |= HPRT0_SUSP; 146395c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1464197ba5f4SPaul Zimmerman 1465734643dfSGregory Herrero hsotg->bus_suspended = 1; 1466197ba5f4SPaul Zimmerman 1467a2a23d3fSGregory Herrero /* 1468a2a23d3fSGregory Herrero * If hibernation is supported, Phy clock will be suspended 1469a2a23d3fSGregory Herrero * after registers are backuped. 1470a2a23d3fSGregory Herrero */ 1471a2a23d3fSGregory Herrero if (!hsotg->core_params->hibernation) { 1472197ba5f4SPaul Zimmerman /* Suspend the Phy Clock */ 147395c8bc36SAntti Seppälä pcgctl = dwc2_readl(hsotg->regs + PCGCTL); 1474197ba5f4SPaul Zimmerman pcgctl |= PCGCTL_STOPPCLK; 147595c8bc36SAntti Seppälä dwc2_writel(pcgctl, hsotg->regs + PCGCTL); 1476197ba5f4SPaul Zimmerman udelay(10); 1477a2a23d3fSGregory Herrero } 1478197ba5f4SPaul Zimmerman 1479197ba5f4SPaul Zimmerman /* For HNP the bus must be suspended for at least 200ms */ 1480197ba5f4SPaul Zimmerman if (dwc2_host_is_b_hnp_enabled(hsotg)) { 148195c8bc36SAntti Seppälä pcgctl = dwc2_readl(hsotg->regs + PCGCTL); 1482197ba5f4SPaul Zimmerman pcgctl &= ~PCGCTL_STOPPCLK; 148395c8bc36SAntti Seppälä dwc2_writel(pcgctl, hsotg->regs + PCGCTL); 1484197ba5f4SPaul Zimmerman 1485197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 1486197ba5f4SPaul Zimmerman 1487197ba5f4SPaul Zimmerman usleep_range(200000, 250000); 1488197ba5f4SPaul Zimmerman } else { 1489197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 1490197ba5f4SPaul Zimmerman } 1491197ba5f4SPaul Zimmerman } 1492197ba5f4SPaul Zimmerman 149330db103cSGregory Herrero /* Must NOT be called with interrupt disabled or spinlock held */ 149430db103cSGregory Herrero static void dwc2_port_resume(struct dwc2_hsotg *hsotg) 149530db103cSGregory Herrero { 149630db103cSGregory Herrero unsigned long flags; 149730db103cSGregory Herrero u32 hprt0; 149830db103cSGregory Herrero u32 pcgctl; 149930db103cSGregory Herrero 1500a2a23d3fSGregory Herrero /* 1501a2a23d3fSGregory Herrero * If hibernation is supported, Phy clock is already resumed 1502a2a23d3fSGregory Herrero * after registers restore. 1503a2a23d3fSGregory Herrero */ 1504a2a23d3fSGregory Herrero if (!hsotg->core_params->hibernation) { 150530db103cSGregory Herrero pcgctl = dwc2_readl(hsotg->regs + PCGCTL); 150630db103cSGregory Herrero pcgctl &= ~PCGCTL_STOPPCLK; 150730db103cSGregory Herrero dwc2_writel(pcgctl, hsotg->regs + PCGCTL); 150830db103cSGregory Herrero usleep_range(20000, 40000); 1509a2a23d3fSGregory Herrero } 151030db103cSGregory Herrero 151130db103cSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 151230db103cSGregory Herrero hprt0 = dwc2_read_hprt0(hsotg); 151330db103cSGregory Herrero hprt0 |= HPRT0_RES; 151430db103cSGregory Herrero hprt0 &= ~HPRT0_SUSP; 151530db103cSGregory Herrero dwc2_writel(hprt0, hsotg->regs + HPRT0); 151630db103cSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 151730db103cSGregory Herrero 151830db103cSGregory Herrero msleep(USB_RESUME_TIMEOUT); 151930db103cSGregory Herrero 152030db103cSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 152130db103cSGregory Herrero hprt0 = dwc2_read_hprt0(hsotg); 152230db103cSGregory Herrero hprt0 &= ~(HPRT0_RES | HPRT0_SUSP); 152330db103cSGregory Herrero dwc2_writel(hprt0, hsotg->regs + HPRT0); 1524734643dfSGregory Herrero hsotg->bus_suspended = 0; 152530db103cSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 152630db103cSGregory Herrero } 152730db103cSGregory Herrero 1528197ba5f4SPaul Zimmerman /* Handles hub class-specific requests */ 1529197ba5f4SPaul Zimmerman static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, 1530197ba5f4SPaul Zimmerman u16 wvalue, u16 windex, char *buf, u16 wlength) 1531197ba5f4SPaul Zimmerman { 1532197ba5f4SPaul Zimmerman struct usb_hub_descriptor *hub_desc; 1533197ba5f4SPaul Zimmerman int retval = 0; 1534197ba5f4SPaul Zimmerman u32 hprt0; 1535197ba5f4SPaul Zimmerman u32 port_status; 1536197ba5f4SPaul Zimmerman u32 speed; 1537197ba5f4SPaul Zimmerman u32 pcgctl; 1538197ba5f4SPaul Zimmerman 1539197ba5f4SPaul Zimmerman switch (typereq) { 1540197ba5f4SPaul Zimmerman case ClearHubFeature: 1541197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "ClearHubFeature %1xh\n", wvalue); 1542197ba5f4SPaul Zimmerman 1543197ba5f4SPaul Zimmerman switch (wvalue) { 1544197ba5f4SPaul Zimmerman case C_HUB_LOCAL_POWER: 1545197ba5f4SPaul Zimmerman case C_HUB_OVER_CURRENT: 1546197ba5f4SPaul Zimmerman /* Nothing required here */ 1547197ba5f4SPaul Zimmerman break; 1548197ba5f4SPaul Zimmerman 1549197ba5f4SPaul Zimmerman default: 1550197ba5f4SPaul Zimmerman retval = -EINVAL; 1551197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 1552197ba5f4SPaul Zimmerman "ClearHubFeature request %1xh unknown\n", 1553197ba5f4SPaul Zimmerman wvalue); 1554197ba5f4SPaul Zimmerman } 1555197ba5f4SPaul Zimmerman break; 1556197ba5f4SPaul Zimmerman 1557197ba5f4SPaul Zimmerman case ClearPortFeature: 1558197ba5f4SPaul Zimmerman if (wvalue != USB_PORT_FEAT_L1) 1559197ba5f4SPaul Zimmerman if (!windex || windex > 1) 1560197ba5f4SPaul Zimmerman goto error; 1561197ba5f4SPaul Zimmerman switch (wvalue) { 1562197ba5f4SPaul Zimmerman case USB_PORT_FEAT_ENABLE: 1563197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1564197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_ENABLE\n"); 1565197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1566197ba5f4SPaul Zimmerman hprt0 |= HPRT0_ENA; 156795c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1568197ba5f4SPaul Zimmerman break; 1569197ba5f4SPaul Zimmerman 1570197ba5f4SPaul Zimmerman case USB_PORT_FEAT_SUSPEND: 1571197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1572197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_SUSPEND\n"); 1573b0bb9bb6SPaul Zimmerman 1574bea78555SGregory Herrero if (hsotg->bus_suspended) 157530db103cSGregory Herrero dwc2_port_resume(hsotg); 1576197ba5f4SPaul Zimmerman break; 1577197ba5f4SPaul Zimmerman 1578197ba5f4SPaul Zimmerman case USB_PORT_FEAT_POWER: 1579197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1580197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_POWER\n"); 1581197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1582197ba5f4SPaul Zimmerman hprt0 &= ~HPRT0_PWR; 158395c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1584197ba5f4SPaul Zimmerman break; 1585197ba5f4SPaul Zimmerman 1586197ba5f4SPaul Zimmerman case USB_PORT_FEAT_INDICATOR: 1587197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1588197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_INDICATOR\n"); 1589197ba5f4SPaul Zimmerman /* Port indicator not supported */ 1590197ba5f4SPaul Zimmerman break; 1591197ba5f4SPaul Zimmerman 1592197ba5f4SPaul Zimmerman case USB_PORT_FEAT_C_CONNECTION: 1593197ba5f4SPaul Zimmerman /* 1594197ba5f4SPaul Zimmerman * Clears driver's internal Connect Status Change flag 1595197ba5f4SPaul Zimmerman */ 1596197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1597197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n"); 1598197ba5f4SPaul Zimmerman hsotg->flags.b.port_connect_status_change = 0; 1599197ba5f4SPaul Zimmerman break; 1600197ba5f4SPaul Zimmerman 1601197ba5f4SPaul Zimmerman case USB_PORT_FEAT_C_RESET: 1602197ba5f4SPaul Zimmerman /* Clears driver's internal Port Reset Change flag */ 1603197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1604197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_C_RESET\n"); 1605197ba5f4SPaul Zimmerman hsotg->flags.b.port_reset_change = 0; 1606197ba5f4SPaul Zimmerman break; 1607197ba5f4SPaul Zimmerman 1608197ba5f4SPaul Zimmerman case USB_PORT_FEAT_C_ENABLE: 1609197ba5f4SPaul Zimmerman /* 1610197ba5f4SPaul Zimmerman * Clears the driver's internal Port Enable/Disable 1611197ba5f4SPaul Zimmerman * Change flag 1612197ba5f4SPaul Zimmerman */ 1613197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1614197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n"); 1615197ba5f4SPaul Zimmerman hsotg->flags.b.port_enable_change = 0; 1616197ba5f4SPaul Zimmerman break; 1617197ba5f4SPaul Zimmerman 1618197ba5f4SPaul Zimmerman case USB_PORT_FEAT_C_SUSPEND: 1619197ba5f4SPaul Zimmerman /* 1620197ba5f4SPaul Zimmerman * Clears the driver's internal Port Suspend Change 1621197ba5f4SPaul Zimmerman * flag, which is set when resume signaling on the host 1622197ba5f4SPaul Zimmerman * port is complete 1623197ba5f4SPaul Zimmerman */ 1624197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1625197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n"); 1626197ba5f4SPaul Zimmerman hsotg->flags.b.port_suspend_change = 0; 1627197ba5f4SPaul Zimmerman break; 1628197ba5f4SPaul Zimmerman 1629197ba5f4SPaul Zimmerman case USB_PORT_FEAT_C_PORT_L1: 1630197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1631197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_C_PORT_L1\n"); 1632197ba5f4SPaul Zimmerman hsotg->flags.b.port_l1_change = 0; 1633197ba5f4SPaul Zimmerman break; 1634197ba5f4SPaul Zimmerman 1635197ba5f4SPaul Zimmerman case USB_PORT_FEAT_C_OVER_CURRENT: 1636197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1637197ba5f4SPaul Zimmerman "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n"); 1638197ba5f4SPaul Zimmerman hsotg->flags.b.port_over_current_change = 0; 1639197ba5f4SPaul Zimmerman break; 1640197ba5f4SPaul Zimmerman 1641197ba5f4SPaul Zimmerman default: 1642197ba5f4SPaul Zimmerman retval = -EINVAL; 1643197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 1644197ba5f4SPaul Zimmerman "ClearPortFeature request %1xh unknown or unsupported\n", 1645197ba5f4SPaul Zimmerman wvalue); 1646197ba5f4SPaul Zimmerman } 1647197ba5f4SPaul Zimmerman break; 1648197ba5f4SPaul Zimmerman 1649197ba5f4SPaul Zimmerman case GetHubDescriptor: 1650197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "GetHubDescriptor\n"); 1651197ba5f4SPaul Zimmerman hub_desc = (struct usb_hub_descriptor *)buf; 1652197ba5f4SPaul Zimmerman hub_desc->bDescLength = 9; 1653a5dd0395SSergei Shtylyov hub_desc->bDescriptorType = USB_DT_HUB; 1654197ba5f4SPaul Zimmerman hub_desc->bNbrPorts = 1; 16553d040de8SSergei Shtylyov hub_desc->wHubCharacteristics = 16563d040de8SSergei Shtylyov cpu_to_le16(HUB_CHAR_COMMON_LPSM | 16573d040de8SSergei Shtylyov HUB_CHAR_INDV_PORT_OCPM); 1658197ba5f4SPaul Zimmerman hub_desc->bPwrOn2PwrGood = 1; 1659197ba5f4SPaul Zimmerman hub_desc->bHubContrCurrent = 0; 1660197ba5f4SPaul Zimmerman hub_desc->u.hs.DeviceRemovable[0] = 0; 1661197ba5f4SPaul Zimmerman hub_desc->u.hs.DeviceRemovable[1] = 0xff; 1662197ba5f4SPaul Zimmerman break; 1663197ba5f4SPaul Zimmerman 1664197ba5f4SPaul Zimmerman case GetHubStatus: 1665197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "GetHubStatus\n"); 1666197ba5f4SPaul Zimmerman memset(buf, 0, 4); 1667197ba5f4SPaul Zimmerman break; 1668197ba5f4SPaul Zimmerman 1669197ba5f4SPaul Zimmerman case GetPortStatus: 1670197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 1671197ba5f4SPaul Zimmerman "GetPortStatus wIndex=0x%04x flags=0x%08x\n", windex, 1672197ba5f4SPaul Zimmerman hsotg->flags.d32); 1673197ba5f4SPaul Zimmerman if (!windex || windex > 1) 1674197ba5f4SPaul Zimmerman goto error; 1675197ba5f4SPaul Zimmerman 1676197ba5f4SPaul Zimmerman port_status = 0; 1677197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_connect_status_change) 1678197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_C_CONNECTION << 16; 1679197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_enable_change) 1680197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_C_ENABLE << 16; 1681197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_suspend_change) 1682197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_C_SUSPEND << 16; 1683197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_l1_change) 1684197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_C_L1 << 16; 1685197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_reset_change) 1686197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_C_RESET << 16; 1687197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_over_current_change) { 1688197ba5f4SPaul Zimmerman dev_warn(hsotg->dev, "Overcurrent change detected\n"); 1689197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_C_OVERCURRENT << 16; 1690197ba5f4SPaul Zimmerman } 1691197ba5f4SPaul Zimmerman 1692197ba5f4SPaul Zimmerman if (!hsotg->flags.b.port_connect_status) { 1693197ba5f4SPaul Zimmerman /* 1694197ba5f4SPaul Zimmerman * The port is disconnected, which means the core is 1695197ba5f4SPaul Zimmerman * either in device mode or it soon will be. Just 1696197ba5f4SPaul Zimmerman * return 0's for the remainder of the port status 1697197ba5f4SPaul Zimmerman * since the port register can't be read if the core 1698197ba5f4SPaul Zimmerman * is in device mode. 1699197ba5f4SPaul Zimmerman */ 1700197ba5f4SPaul Zimmerman *(__le32 *)buf = cpu_to_le32(port_status); 1701197ba5f4SPaul Zimmerman break; 1702197ba5f4SPaul Zimmerman } 1703197ba5f4SPaul Zimmerman 170495c8bc36SAntti Seppälä hprt0 = dwc2_readl(hsotg->regs + HPRT0); 1705197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " HPRT0: 0x%08x\n", hprt0); 1706197ba5f4SPaul Zimmerman 1707197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_CONNSTS) 1708197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_CONNECTION; 1709197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_ENA) 1710197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_ENABLE; 1711197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_SUSP) 1712197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_SUSPEND; 1713197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_OVRCURRACT) 1714197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_OVERCURRENT; 1715197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_RST) 1716197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_RESET; 1717197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_PWR) 1718197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_POWER; 1719197ba5f4SPaul Zimmerman 1720197ba5f4SPaul Zimmerman speed = (hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT; 1721197ba5f4SPaul Zimmerman if (speed == HPRT0_SPD_HIGH_SPEED) 1722197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_HIGH_SPEED; 1723197ba5f4SPaul Zimmerman else if (speed == HPRT0_SPD_LOW_SPEED) 1724197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_LOW_SPEED; 1725197ba5f4SPaul Zimmerman 1726197ba5f4SPaul Zimmerman if (hprt0 & HPRT0_TSTCTL_MASK) 1727197ba5f4SPaul Zimmerman port_status |= USB_PORT_STAT_TEST; 1728197ba5f4SPaul Zimmerman /* USB_PORT_FEAT_INDICATOR unsupported always 0 */ 1729197ba5f4SPaul Zimmerman 1730197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "port_status=%08x\n", port_status); 1731197ba5f4SPaul Zimmerman *(__le32 *)buf = cpu_to_le32(port_status); 1732197ba5f4SPaul Zimmerman break; 1733197ba5f4SPaul Zimmerman 1734197ba5f4SPaul Zimmerman case SetHubFeature: 1735197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "SetHubFeature\n"); 1736197ba5f4SPaul Zimmerman /* No HUB features supported */ 1737197ba5f4SPaul Zimmerman break; 1738197ba5f4SPaul Zimmerman 1739197ba5f4SPaul Zimmerman case SetPortFeature: 1740197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "SetPortFeature\n"); 1741197ba5f4SPaul Zimmerman if (wvalue != USB_PORT_FEAT_TEST && (!windex || windex > 1)) 1742197ba5f4SPaul Zimmerman goto error; 1743197ba5f4SPaul Zimmerman 1744197ba5f4SPaul Zimmerman if (!hsotg->flags.b.port_connect_status) { 1745197ba5f4SPaul Zimmerman /* 1746197ba5f4SPaul Zimmerman * The port is disconnected, which means the core is 1747197ba5f4SPaul Zimmerman * either in device mode or it soon will be. Just 1748197ba5f4SPaul Zimmerman * return without doing anything since the port 1749197ba5f4SPaul Zimmerman * register can't be written if the core is in device 1750197ba5f4SPaul Zimmerman * mode. 1751197ba5f4SPaul Zimmerman */ 1752197ba5f4SPaul Zimmerman break; 1753197ba5f4SPaul Zimmerman } 1754197ba5f4SPaul Zimmerman 1755197ba5f4SPaul Zimmerman switch (wvalue) { 1756197ba5f4SPaul Zimmerman case USB_PORT_FEAT_SUSPEND: 1757197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1758197ba5f4SPaul Zimmerman "SetPortFeature - USB_PORT_FEAT_SUSPEND\n"); 1759197ba5f4SPaul Zimmerman if (windex != hsotg->otg_port) 1760197ba5f4SPaul Zimmerman goto error; 1761197ba5f4SPaul Zimmerman dwc2_port_suspend(hsotg, windex); 1762197ba5f4SPaul Zimmerman break; 1763197ba5f4SPaul Zimmerman 1764197ba5f4SPaul Zimmerman case USB_PORT_FEAT_POWER: 1765197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1766197ba5f4SPaul Zimmerman "SetPortFeature - USB_PORT_FEAT_POWER\n"); 1767197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1768197ba5f4SPaul Zimmerman hprt0 |= HPRT0_PWR; 176995c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1770197ba5f4SPaul Zimmerman break; 1771197ba5f4SPaul Zimmerman 1772197ba5f4SPaul Zimmerman case USB_PORT_FEAT_RESET: 1773197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1774197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1775197ba5f4SPaul Zimmerman "SetPortFeature - USB_PORT_FEAT_RESET\n"); 177695c8bc36SAntti Seppälä pcgctl = dwc2_readl(hsotg->regs + PCGCTL); 1777197ba5f4SPaul Zimmerman pcgctl &= ~(PCGCTL_ENBL_SLEEP_GATING | PCGCTL_STOPPCLK); 177895c8bc36SAntti Seppälä dwc2_writel(pcgctl, hsotg->regs + PCGCTL); 1779197ba5f4SPaul Zimmerman /* ??? Original driver does this */ 178095c8bc36SAntti Seppälä dwc2_writel(0, hsotg->regs + PCGCTL); 1781197ba5f4SPaul Zimmerman 1782197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 1783197ba5f4SPaul Zimmerman /* Clear suspend bit if resetting from suspend state */ 1784197ba5f4SPaul Zimmerman hprt0 &= ~HPRT0_SUSP; 1785197ba5f4SPaul Zimmerman 1786197ba5f4SPaul Zimmerman /* 1787197ba5f4SPaul Zimmerman * When B-Host the Port reset bit is set in the Start 1788197ba5f4SPaul Zimmerman * HCD Callback function, so that the reset is started 1789197ba5f4SPaul Zimmerman * within 1ms of the HNP success interrupt 1790197ba5f4SPaul Zimmerman */ 1791197ba5f4SPaul Zimmerman if (!dwc2_hcd_is_b_host(hsotg)) { 1792197ba5f4SPaul Zimmerman hprt0 |= HPRT0_PWR | HPRT0_RST; 1793197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1794197ba5f4SPaul Zimmerman "In host mode, hprt0=%08x\n", hprt0); 179595c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1796197ba5f4SPaul Zimmerman } 1797197ba5f4SPaul Zimmerman 1798197ba5f4SPaul Zimmerman /* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */ 1799197ba5f4SPaul Zimmerman usleep_range(50000, 70000); 1800197ba5f4SPaul Zimmerman hprt0 &= ~HPRT0_RST; 180195c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 1802197ba5f4SPaul Zimmerman hsotg->lx_state = DWC2_L0; /* Now back to On state */ 1803197ba5f4SPaul Zimmerman break; 1804197ba5f4SPaul Zimmerman 1805197ba5f4SPaul Zimmerman case USB_PORT_FEAT_INDICATOR: 1806197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1807197ba5f4SPaul Zimmerman "SetPortFeature - USB_PORT_FEAT_INDICATOR\n"); 1808197ba5f4SPaul Zimmerman /* Not supported */ 1809197ba5f4SPaul Zimmerman break; 1810197ba5f4SPaul Zimmerman 181196d480e6SJingwu Lin case USB_PORT_FEAT_TEST: 181296d480e6SJingwu Lin hprt0 = dwc2_read_hprt0(hsotg); 181396d480e6SJingwu Lin dev_dbg(hsotg->dev, 181496d480e6SJingwu Lin "SetPortFeature - USB_PORT_FEAT_TEST\n"); 181596d480e6SJingwu Lin hprt0 &= ~HPRT0_TSTCTL_MASK; 181696d480e6SJingwu Lin hprt0 |= (windex >> 8) << HPRT0_TSTCTL_SHIFT; 181795c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 181896d480e6SJingwu Lin break; 181996d480e6SJingwu Lin 1820197ba5f4SPaul Zimmerman default: 1821197ba5f4SPaul Zimmerman retval = -EINVAL; 1822197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 1823197ba5f4SPaul Zimmerman "SetPortFeature %1xh unknown or unsupported\n", 1824197ba5f4SPaul Zimmerman wvalue); 1825197ba5f4SPaul Zimmerman break; 1826197ba5f4SPaul Zimmerman } 1827197ba5f4SPaul Zimmerman break; 1828197ba5f4SPaul Zimmerman 1829197ba5f4SPaul Zimmerman default: 1830197ba5f4SPaul Zimmerman error: 1831197ba5f4SPaul Zimmerman retval = -EINVAL; 1832197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1833197ba5f4SPaul Zimmerman "Unknown hub control request: %1xh wIndex: %1xh wValue: %1xh\n", 1834197ba5f4SPaul Zimmerman typereq, windex, wvalue); 1835197ba5f4SPaul Zimmerman break; 1836197ba5f4SPaul Zimmerman } 1837197ba5f4SPaul Zimmerman 1838197ba5f4SPaul Zimmerman return retval; 1839197ba5f4SPaul Zimmerman } 1840197ba5f4SPaul Zimmerman 1841197ba5f4SPaul Zimmerman static int dwc2_hcd_is_status_changed(struct dwc2_hsotg *hsotg, int port) 1842197ba5f4SPaul Zimmerman { 1843197ba5f4SPaul Zimmerman int retval; 1844197ba5f4SPaul Zimmerman 1845197ba5f4SPaul Zimmerman if (port != 1) 1846197ba5f4SPaul Zimmerman return -EINVAL; 1847197ba5f4SPaul Zimmerman 1848197ba5f4SPaul Zimmerman retval = (hsotg->flags.b.port_connect_status_change || 1849197ba5f4SPaul Zimmerman hsotg->flags.b.port_reset_change || 1850197ba5f4SPaul Zimmerman hsotg->flags.b.port_enable_change || 1851197ba5f4SPaul Zimmerman hsotg->flags.b.port_suspend_change || 1852197ba5f4SPaul Zimmerman hsotg->flags.b.port_over_current_change); 1853197ba5f4SPaul Zimmerman 1854197ba5f4SPaul Zimmerman if (retval) { 1855197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1856197ba5f4SPaul Zimmerman "DWC OTG HCD HUB STATUS DATA: Root port status changed\n"); 1857197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " port_connect_status_change: %d\n", 1858197ba5f4SPaul Zimmerman hsotg->flags.b.port_connect_status_change); 1859197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " port_reset_change: %d\n", 1860197ba5f4SPaul Zimmerman hsotg->flags.b.port_reset_change); 1861197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " port_enable_change: %d\n", 1862197ba5f4SPaul Zimmerman hsotg->flags.b.port_enable_change); 1863197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " port_suspend_change: %d\n", 1864197ba5f4SPaul Zimmerman hsotg->flags.b.port_suspend_change); 1865197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " port_over_current_change: %d\n", 1866197ba5f4SPaul Zimmerman hsotg->flags.b.port_over_current_change); 1867197ba5f4SPaul Zimmerman } 1868197ba5f4SPaul Zimmerman 1869197ba5f4SPaul Zimmerman return retval; 1870197ba5f4SPaul Zimmerman } 1871197ba5f4SPaul Zimmerman 1872197ba5f4SPaul Zimmerman int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg) 1873197ba5f4SPaul Zimmerman { 187495c8bc36SAntti Seppälä u32 hfnum = dwc2_readl(hsotg->regs + HFNUM); 1875197ba5f4SPaul Zimmerman 1876197ba5f4SPaul Zimmerman #ifdef DWC2_DEBUG_SOF 1877197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "DWC OTG HCD GET FRAME NUMBER %d\n", 1878197ba5f4SPaul Zimmerman (hfnum & HFNUM_FRNUM_MASK) >> HFNUM_FRNUM_SHIFT); 1879197ba5f4SPaul Zimmerman #endif 1880197ba5f4SPaul Zimmerman return (hfnum & HFNUM_FRNUM_MASK) >> HFNUM_FRNUM_SHIFT; 1881197ba5f4SPaul Zimmerman } 1882197ba5f4SPaul Zimmerman 1883197ba5f4SPaul Zimmerman int dwc2_hcd_is_b_host(struct dwc2_hsotg *hsotg) 1884197ba5f4SPaul Zimmerman { 1885197ba5f4SPaul Zimmerman return hsotg->op_state == OTG_STATE_B_HOST; 1886197ba5f4SPaul Zimmerman } 1887197ba5f4SPaul Zimmerman 1888197ba5f4SPaul Zimmerman static struct dwc2_hcd_urb *dwc2_hcd_urb_alloc(struct dwc2_hsotg *hsotg, 1889197ba5f4SPaul Zimmerman int iso_desc_count, 1890197ba5f4SPaul Zimmerman gfp_t mem_flags) 1891197ba5f4SPaul Zimmerman { 1892197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *urb; 1893197ba5f4SPaul Zimmerman u32 size = sizeof(*urb) + iso_desc_count * 1894197ba5f4SPaul Zimmerman sizeof(struct dwc2_hcd_iso_packet_desc); 1895197ba5f4SPaul Zimmerman 1896197ba5f4SPaul Zimmerman urb = kzalloc(size, mem_flags); 1897197ba5f4SPaul Zimmerman if (urb) 1898197ba5f4SPaul Zimmerman urb->packet_count = iso_desc_count; 1899197ba5f4SPaul Zimmerman return urb; 1900197ba5f4SPaul Zimmerman } 1901197ba5f4SPaul Zimmerman 1902197ba5f4SPaul Zimmerman static void dwc2_hcd_urb_set_pipeinfo(struct dwc2_hsotg *hsotg, 1903197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *urb, u8 dev_addr, 1904197ba5f4SPaul Zimmerman u8 ep_num, u8 ep_type, u8 ep_dir, u16 mps) 1905197ba5f4SPaul Zimmerman { 1906197ba5f4SPaul Zimmerman if (dbg_perio() || 1907197ba5f4SPaul Zimmerman ep_type == USB_ENDPOINT_XFER_BULK || 1908197ba5f4SPaul Zimmerman ep_type == USB_ENDPOINT_XFER_CONTROL) 1909197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 1910197ba5f4SPaul Zimmerman "addr=%d, ep_num=%d, ep_dir=%1x, ep_type=%1x, mps=%d\n", 1911197ba5f4SPaul Zimmerman dev_addr, ep_num, ep_dir, ep_type, mps); 1912197ba5f4SPaul Zimmerman urb->pipe_info.dev_addr = dev_addr; 1913197ba5f4SPaul Zimmerman urb->pipe_info.ep_num = ep_num; 1914197ba5f4SPaul Zimmerman urb->pipe_info.pipe_type = ep_type; 1915197ba5f4SPaul Zimmerman urb->pipe_info.pipe_dir = ep_dir; 1916197ba5f4SPaul Zimmerman urb->pipe_info.mps = mps; 1917197ba5f4SPaul Zimmerman } 1918197ba5f4SPaul Zimmerman 1919197ba5f4SPaul Zimmerman /* 1920197ba5f4SPaul Zimmerman * NOTE: This function will be removed once the peripheral controller code 1921197ba5f4SPaul Zimmerman * is integrated and the driver is stable 1922197ba5f4SPaul Zimmerman */ 1923197ba5f4SPaul Zimmerman void dwc2_hcd_dump_state(struct dwc2_hsotg *hsotg) 1924197ba5f4SPaul Zimmerman { 1925197ba5f4SPaul Zimmerman #ifdef DEBUG 1926197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan; 1927197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *urb; 1928197ba5f4SPaul Zimmerman struct dwc2_qtd *qtd; 1929197ba5f4SPaul Zimmerman int num_channels; 1930197ba5f4SPaul Zimmerman u32 np_tx_status; 1931197ba5f4SPaul Zimmerman u32 p_tx_status; 1932197ba5f4SPaul Zimmerman int i; 1933197ba5f4SPaul Zimmerman 1934197ba5f4SPaul Zimmerman num_channels = hsotg->core_params->host_channels; 1935197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "\n"); 1936197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1937197ba5f4SPaul Zimmerman "************************************************************\n"); 1938197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "HCD State:\n"); 1939197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " Num channels: %d\n", num_channels); 1940197ba5f4SPaul Zimmerman 1941197ba5f4SPaul Zimmerman for (i = 0; i < num_channels; i++) { 1942197ba5f4SPaul Zimmerman chan = hsotg->hc_ptr_array[i]; 1943197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " Channel %d:\n", i); 1944197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 1945197ba5f4SPaul Zimmerman " dev_addr: %d, ep_num: %d, ep_is_in: %d\n", 1946197ba5f4SPaul Zimmerman chan->dev_addr, chan->ep_num, chan->ep_is_in); 1947197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " speed: %d\n", chan->speed); 1948197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " ep_type: %d\n", chan->ep_type); 1949197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " max_packet: %d\n", chan->max_packet); 1950197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " data_pid_start: %d\n", 1951197ba5f4SPaul Zimmerman chan->data_pid_start); 1952197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " multi_count: %d\n", chan->multi_count); 1953197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_started: %d\n", 1954197ba5f4SPaul Zimmerman chan->xfer_started); 1955197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_buf: %p\n", chan->xfer_buf); 1956197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_dma: %08lx\n", 1957197ba5f4SPaul Zimmerman (unsigned long)chan->xfer_dma); 1958197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_len: %d\n", chan->xfer_len); 1959197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xfer_count: %d\n", chan->xfer_count); 1960197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " halt_on_queue: %d\n", 1961197ba5f4SPaul Zimmerman chan->halt_on_queue); 1962197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " halt_pending: %d\n", 1963197ba5f4SPaul Zimmerman chan->halt_pending); 1964197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " halt_status: %d\n", chan->halt_status); 1965197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " do_split: %d\n", chan->do_split); 1966197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " complete_split: %d\n", 1967197ba5f4SPaul Zimmerman chan->complete_split); 1968197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hub_addr: %d\n", chan->hub_addr); 1969197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hub_port: %d\n", chan->hub_port); 1970197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " xact_pos: %d\n", chan->xact_pos); 1971197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " requests: %d\n", chan->requests); 1972197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " qh: %p\n", chan->qh); 1973197ba5f4SPaul Zimmerman 1974197ba5f4SPaul Zimmerman if (chan->xfer_started) { 1975197ba5f4SPaul Zimmerman u32 hfnum, hcchar, hctsiz, hcint, hcintmsk; 1976197ba5f4SPaul Zimmerman 197795c8bc36SAntti Seppälä hfnum = dwc2_readl(hsotg->regs + HFNUM); 197895c8bc36SAntti Seppälä hcchar = dwc2_readl(hsotg->regs + HCCHAR(i)); 197995c8bc36SAntti Seppälä hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(i)); 198095c8bc36SAntti Seppälä hcint = dwc2_readl(hsotg->regs + HCINT(i)); 198195c8bc36SAntti Seppälä hcintmsk = dwc2_readl(hsotg->regs + HCINTMSK(i)); 1982197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hfnum: 0x%08x\n", hfnum); 1983197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hcchar: 0x%08x\n", hcchar); 1984197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hctsiz: 0x%08x\n", hctsiz); 1985197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hcint: 0x%08x\n", hcint); 1986197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " hcintmsk: 0x%08x\n", hcintmsk); 1987197ba5f4SPaul Zimmerman } 1988197ba5f4SPaul Zimmerman 1989197ba5f4SPaul Zimmerman if (!(chan->xfer_started && chan->qh)) 1990197ba5f4SPaul Zimmerman continue; 1991197ba5f4SPaul Zimmerman 1992197ba5f4SPaul Zimmerman list_for_each_entry(qtd, &chan->qh->qtd_list, qtd_list_entry) { 1993197ba5f4SPaul Zimmerman if (!qtd->in_process) 1994197ba5f4SPaul Zimmerman break; 1995197ba5f4SPaul Zimmerman urb = qtd->urb; 1996197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " URB Info:\n"); 1997197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " qtd: %p, urb: %p\n", 1998197ba5f4SPaul Zimmerman qtd, urb); 1999197ba5f4SPaul Zimmerman if (urb) { 2000197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2001197ba5f4SPaul Zimmerman " Dev: %d, EP: %d %s\n", 2002197ba5f4SPaul Zimmerman dwc2_hcd_get_dev_addr(&urb->pipe_info), 2003197ba5f4SPaul Zimmerman dwc2_hcd_get_ep_num(&urb->pipe_info), 2004197ba5f4SPaul Zimmerman dwc2_hcd_is_pipe_in(&urb->pipe_info) ? 2005197ba5f4SPaul Zimmerman "IN" : "OUT"); 2006197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2007197ba5f4SPaul Zimmerman " Max packet size: %d\n", 2008197ba5f4SPaul Zimmerman dwc2_hcd_get_mps(&urb->pipe_info)); 2009197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2010197ba5f4SPaul Zimmerman " transfer_buffer: %p\n", 2011197ba5f4SPaul Zimmerman urb->buf); 2012197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2013197ba5f4SPaul Zimmerman " transfer_dma: %08lx\n", 2014197ba5f4SPaul Zimmerman (unsigned long)urb->dma); 2015197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2016197ba5f4SPaul Zimmerman " transfer_buffer_length: %d\n", 2017197ba5f4SPaul Zimmerman urb->length); 2018197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " actual_length: %d\n", 2019197ba5f4SPaul Zimmerman urb->actual_length); 2020197ba5f4SPaul Zimmerman } 2021197ba5f4SPaul Zimmerman } 2022197ba5f4SPaul Zimmerman } 2023197ba5f4SPaul Zimmerman 2024197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " non_periodic_channels: %d\n", 2025197ba5f4SPaul Zimmerman hsotg->non_periodic_channels); 2026197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " periodic_channels: %d\n", 2027197ba5f4SPaul Zimmerman hsotg->periodic_channels); 2028197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " periodic_usecs: %d\n", hsotg->periodic_usecs); 202995c8bc36SAntti Seppälä np_tx_status = dwc2_readl(hsotg->regs + GNPTXSTS); 2030197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " NP Tx Req Queue Space Avail: %d\n", 2031197ba5f4SPaul Zimmerman (np_tx_status & TXSTS_QSPCAVAIL_MASK) >> TXSTS_QSPCAVAIL_SHIFT); 2032197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " NP Tx FIFO Space Avail: %d\n", 2033197ba5f4SPaul Zimmerman (np_tx_status & TXSTS_FSPCAVAIL_MASK) >> TXSTS_FSPCAVAIL_SHIFT); 203495c8bc36SAntti Seppälä p_tx_status = dwc2_readl(hsotg->regs + HPTXSTS); 2035197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " P Tx Req Queue Space Avail: %d\n", 2036197ba5f4SPaul Zimmerman (p_tx_status & TXSTS_QSPCAVAIL_MASK) >> TXSTS_QSPCAVAIL_SHIFT); 2037197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " P Tx FIFO Space Avail: %d\n", 2038197ba5f4SPaul Zimmerman (p_tx_status & TXSTS_FSPCAVAIL_MASK) >> TXSTS_FSPCAVAIL_SHIFT); 2039197ba5f4SPaul Zimmerman dwc2_hcd_dump_frrem(hsotg); 2040197ba5f4SPaul Zimmerman dwc2_dump_global_registers(hsotg); 2041197ba5f4SPaul Zimmerman dwc2_dump_host_registers(hsotg); 2042197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2043197ba5f4SPaul Zimmerman "************************************************************\n"); 2044197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "\n"); 2045197ba5f4SPaul Zimmerman #endif 2046197ba5f4SPaul Zimmerman } 2047197ba5f4SPaul Zimmerman 2048197ba5f4SPaul Zimmerman /* 2049197ba5f4SPaul Zimmerman * NOTE: This function will be removed once the peripheral controller code 2050197ba5f4SPaul Zimmerman * is integrated and the driver is stable 2051197ba5f4SPaul Zimmerman */ 2052197ba5f4SPaul Zimmerman void dwc2_hcd_dump_frrem(struct dwc2_hsotg *hsotg) 2053197ba5f4SPaul Zimmerman { 2054197ba5f4SPaul Zimmerman #ifdef DWC2_DUMP_FRREM 2055197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at SOF:\n"); 2056197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2057197ba5f4SPaul Zimmerman hsotg->frrem_samples, hsotg->frrem_accum, 2058197ba5f4SPaul Zimmerman hsotg->frrem_samples > 0 ? 2059197ba5f4SPaul Zimmerman hsotg->frrem_accum / hsotg->frrem_samples : 0); 2060197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "\n"); 2061197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at start_transfer (uframe 7):\n"); 2062197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2063197ba5f4SPaul Zimmerman hsotg->hfnum_7_samples, 2064197ba5f4SPaul Zimmerman hsotg->hfnum_7_frrem_accum, 2065197ba5f4SPaul Zimmerman hsotg->hfnum_7_samples > 0 ? 2066197ba5f4SPaul Zimmerman hsotg->hfnum_7_frrem_accum / hsotg->hfnum_7_samples : 0); 2067197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at start_transfer (uframe 0):\n"); 2068197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2069197ba5f4SPaul Zimmerman hsotg->hfnum_0_samples, 2070197ba5f4SPaul Zimmerman hsotg->hfnum_0_frrem_accum, 2071197ba5f4SPaul Zimmerman hsotg->hfnum_0_samples > 0 ? 2072197ba5f4SPaul Zimmerman hsotg->hfnum_0_frrem_accum / hsotg->hfnum_0_samples : 0); 2073197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at start_transfer (uframe 1-6):\n"); 2074197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2075197ba5f4SPaul Zimmerman hsotg->hfnum_other_samples, 2076197ba5f4SPaul Zimmerman hsotg->hfnum_other_frrem_accum, 2077197ba5f4SPaul Zimmerman hsotg->hfnum_other_samples > 0 ? 2078197ba5f4SPaul Zimmerman hsotg->hfnum_other_frrem_accum / hsotg->hfnum_other_samples : 2079197ba5f4SPaul Zimmerman 0); 2080197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "\n"); 2081197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at sample point A (uframe 7):\n"); 2082197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2083197ba5f4SPaul Zimmerman hsotg->hfnum_7_samples_a, hsotg->hfnum_7_frrem_accum_a, 2084197ba5f4SPaul Zimmerman hsotg->hfnum_7_samples_a > 0 ? 2085197ba5f4SPaul Zimmerman hsotg->hfnum_7_frrem_accum_a / hsotg->hfnum_7_samples_a : 0); 2086197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at sample point A (uframe 0):\n"); 2087197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2088197ba5f4SPaul Zimmerman hsotg->hfnum_0_samples_a, hsotg->hfnum_0_frrem_accum_a, 2089197ba5f4SPaul Zimmerman hsotg->hfnum_0_samples_a > 0 ? 2090197ba5f4SPaul Zimmerman hsotg->hfnum_0_frrem_accum_a / hsotg->hfnum_0_samples_a : 0); 2091197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at sample point A (uframe 1-6):\n"); 2092197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2093197ba5f4SPaul Zimmerman hsotg->hfnum_other_samples_a, hsotg->hfnum_other_frrem_accum_a, 2094197ba5f4SPaul Zimmerman hsotg->hfnum_other_samples_a > 0 ? 2095197ba5f4SPaul Zimmerman hsotg->hfnum_other_frrem_accum_a / hsotg->hfnum_other_samples_a 2096197ba5f4SPaul Zimmerman : 0); 2097197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "\n"); 2098197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at sample point B (uframe 7):\n"); 2099197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2100197ba5f4SPaul Zimmerman hsotg->hfnum_7_samples_b, hsotg->hfnum_7_frrem_accum_b, 2101197ba5f4SPaul Zimmerman hsotg->hfnum_7_samples_b > 0 ? 2102197ba5f4SPaul Zimmerman hsotg->hfnum_7_frrem_accum_b / hsotg->hfnum_7_samples_b : 0); 2103197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at sample point B (uframe 0):\n"); 2104197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2105197ba5f4SPaul Zimmerman hsotg->hfnum_0_samples_b, hsotg->hfnum_0_frrem_accum_b, 2106197ba5f4SPaul Zimmerman (hsotg->hfnum_0_samples_b > 0) ? 2107197ba5f4SPaul Zimmerman hsotg->hfnum_0_frrem_accum_b / hsotg->hfnum_0_samples_b : 0); 2108197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Frame remaining at sample point B (uframe 1-6):\n"); 2109197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " samples %u, accum %llu, avg %llu\n", 2110197ba5f4SPaul Zimmerman hsotg->hfnum_other_samples_b, hsotg->hfnum_other_frrem_accum_b, 2111197ba5f4SPaul Zimmerman (hsotg->hfnum_other_samples_b > 0) ? 2112197ba5f4SPaul Zimmerman hsotg->hfnum_other_frrem_accum_b / hsotg->hfnum_other_samples_b 2113197ba5f4SPaul Zimmerman : 0); 2114197ba5f4SPaul Zimmerman #endif 2115197ba5f4SPaul Zimmerman } 2116197ba5f4SPaul Zimmerman 2117197ba5f4SPaul Zimmerman struct wrapper_priv_data { 2118197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg; 2119197ba5f4SPaul Zimmerman }; 2120197ba5f4SPaul Zimmerman 2121197ba5f4SPaul Zimmerman /* Gets the dwc2_hsotg from a usb_hcd */ 2122197ba5f4SPaul Zimmerman static struct dwc2_hsotg *dwc2_hcd_to_hsotg(struct usb_hcd *hcd) 2123197ba5f4SPaul Zimmerman { 2124197ba5f4SPaul Zimmerman struct wrapper_priv_data *p; 2125197ba5f4SPaul Zimmerman 2126197ba5f4SPaul Zimmerman p = (struct wrapper_priv_data *) &hcd->hcd_priv; 2127197ba5f4SPaul Zimmerman return p->hsotg; 2128197ba5f4SPaul Zimmerman } 2129197ba5f4SPaul Zimmerman 2130197ba5f4SPaul Zimmerman static int _dwc2_hcd_start(struct usb_hcd *hcd); 2131197ba5f4SPaul Zimmerman 2132197ba5f4SPaul Zimmerman void dwc2_host_start(struct dwc2_hsotg *hsotg) 2133197ba5f4SPaul Zimmerman { 2134197ba5f4SPaul Zimmerman struct usb_hcd *hcd = dwc2_hsotg_to_hcd(hsotg); 2135197ba5f4SPaul Zimmerman 2136197ba5f4SPaul Zimmerman hcd->self.is_b_host = dwc2_hcd_is_b_host(hsotg); 2137197ba5f4SPaul Zimmerman _dwc2_hcd_start(hcd); 2138197ba5f4SPaul Zimmerman } 2139197ba5f4SPaul Zimmerman 2140197ba5f4SPaul Zimmerman void dwc2_host_disconnect(struct dwc2_hsotg *hsotg) 2141197ba5f4SPaul Zimmerman { 2142197ba5f4SPaul Zimmerman struct usb_hcd *hcd = dwc2_hsotg_to_hcd(hsotg); 2143197ba5f4SPaul Zimmerman 2144197ba5f4SPaul Zimmerman hcd->self.is_b_host = 0; 2145197ba5f4SPaul Zimmerman } 2146197ba5f4SPaul Zimmerman 2147197ba5f4SPaul Zimmerman void dwc2_host_hub_info(struct dwc2_hsotg *hsotg, void *context, int *hub_addr, 2148197ba5f4SPaul Zimmerman int *hub_port) 2149197ba5f4SPaul Zimmerman { 2150197ba5f4SPaul Zimmerman struct urb *urb = context; 2151197ba5f4SPaul Zimmerman 2152197ba5f4SPaul Zimmerman if (urb->dev->tt) 2153197ba5f4SPaul Zimmerman *hub_addr = urb->dev->tt->hub->devnum; 2154197ba5f4SPaul Zimmerman else 2155197ba5f4SPaul Zimmerman *hub_addr = 0; 2156197ba5f4SPaul Zimmerman *hub_port = urb->dev->ttport; 2157197ba5f4SPaul Zimmerman } 2158197ba5f4SPaul Zimmerman 2159197ba5f4SPaul Zimmerman int dwc2_host_get_speed(struct dwc2_hsotg *hsotg, void *context) 2160197ba5f4SPaul Zimmerman { 2161197ba5f4SPaul Zimmerman struct urb *urb = context; 2162197ba5f4SPaul Zimmerman 2163197ba5f4SPaul Zimmerman return urb->dev->speed; 2164197ba5f4SPaul Zimmerman } 2165197ba5f4SPaul Zimmerman 2166197ba5f4SPaul Zimmerman static void dwc2_allocate_bus_bandwidth(struct usb_hcd *hcd, u16 bw, 2167197ba5f4SPaul Zimmerman struct urb *urb) 2168197ba5f4SPaul Zimmerman { 2169197ba5f4SPaul Zimmerman struct usb_bus *bus = hcd_to_bus(hcd); 2170197ba5f4SPaul Zimmerman 2171197ba5f4SPaul Zimmerman if (urb->interval) 2172197ba5f4SPaul Zimmerman bus->bandwidth_allocated += bw / urb->interval; 2173197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) 2174197ba5f4SPaul Zimmerman bus->bandwidth_isoc_reqs++; 2175197ba5f4SPaul Zimmerman else 2176197ba5f4SPaul Zimmerman bus->bandwidth_int_reqs++; 2177197ba5f4SPaul Zimmerman } 2178197ba5f4SPaul Zimmerman 2179197ba5f4SPaul Zimmerman static void dwc2_free_bus_bandwidth(struct usb_hcd *hcd, u16 bw, 2180197ba5f4SPaul Zimmerman struct urb *urb) 2181197ba5f4SPaul Zimmerman { 2182197ba5f4SPaul Zimmerman struct usb_bus *bus = hcd_to_bus(hcd); 2183197ba5f4SPaul Zimmerman 2184197ba5f4SPaul Zimmerman if (urb->interval) 2185197ba5f4SPaul Zimmerman bus->bandwidth_allocated -= bw / urb->interval; 2186197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) 2187197ba5f4SPaul Zimmerman bus->bandwidth_isoc_reqs--; 2188197ba5f4SPaul Zimmerman else 2189197ba5f4SPaul Zimmerman bus->bandwidth_int_reqs--; 2190197ba5f4SPaul Zimmerman } 2191197ba5f4SPaul Zimmerman 2192197ba5f4SPaul Zimmerman /* 2193197ba5f4SPaul Zimmerman * Sets the final status of an URB and returns it to the upper layer. Any 2194197ba5f4SPaul Zimmerman * required cleanup of the URB is performed. 2195197ba5f4SPaul Zimmerman * 2196197ba5f4SPaul Zimmerman * Must be called with interrupt disabled and spinlock held 2197197ba5f4SPaul Zimmerman */ 2198197ba5f4SPaul Zimmerman void dwc2_host_complete(struct dwc2_hsotg *hsotg, struct dwc2_qtd *qtd, 2199197ba5f4SPaul Zimmerman int status) 2200197ba5f4SPaul Zimmerman { 2201197ba5f4SPaul Zimmerman struct urb *urb; 2202197ba5f4SPaul Zimmerman int i; 2203197ba5f4SPaul Zimmerman 2204197ba5f4SPaul Zimmerman if (!qtd) { 2205197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "## %s: qtd is NULL ##\n", __func__); 2206197ba5f4SPaul Zimmerman return; 2207197ba5f4SPaul Zimmerman } 2208197ba5f4SPaul Zimmerman 2209197ba5f4SPaul Zimmerman if (!qtd->urb) { 2210197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "## %s: qtd->urb is NULL ##\n", __func__); 2211197ba5f4SPaul Zimmerman return; 2212197ba5f4SPaul Zimmerman } 2213197ba5f4SPaul Zimmerman 2214197ba5f4SPaul Zimmerman urb = qtd->urb->priv; 2215197ba5f4SPaul Zimmerman if (!urb) { 2216197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "## %s: urb->priv is NULL ##\n", __func__); 2217197ba5f4SPaul Zimmerman return; 2218197ba5f4SPaul Zimmerman } 2219197ba5f4SPaul Zimmerman 2220197ba5f4SPaul Zimmerman urb->actual_length = dwc2_hcd_urb_get_actual_length(qtd->urb); 2221197ba5f4SPaul Zimmerman 2222197ba5f4SPaul Zimmerman if (dbg_urb(urb)) 2223197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, 2224197ba5f4SPaul Zimmerman "%s: urb %p device %d ep %d-%s status %d actual %d\n", 2225197ba5f4SPaul Zimmerman __func__, urb, usb_pipedevice(urb->pipe), 2226197ba5f4SPaul Zimmerman usb_pipeendpoint(urb->pipe), 2227197ba5f4SPaul Zimmerman usb_pipein(urb->pipe) ? "IN" : "OUT", status, 2228197ba5f4SPaul Zimmerman urb->actual_length); 2229197ba5f4SPaul Zimmerman 2230197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS && dbg_perio()) { 2231197ba5f4SPaul Zimmerman for (i = 0; i < urb->number_of_packets; i++) 2232197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " ISO Desc %d status %d\n", 2233197ba5f4SPaul Zimmerman i, urb->iso_frame_desc[i].status); 2234197ba5f4SPaul Zimmerman } 2235197ba5f4SPaul Zimmerman 2236197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { 2237197ba5f4SPaul Zimmerman urb->error_count = dwc2_hcd_urb_get_error_count(qtd->urb); 2238197ba5f4SPaul Zimmerman for (i = 0; i < urb->number_of_packets; ++i) { 2239197ba5f4SPaul Zimmerman urb->iso_frame_desc[i].actual_length = 2240197ba5f4SPaul Zimmerman dwc2_hcd_urb_get_iso_desc_actual_length( 2241197ba5f4SPaul Zimmerman qtd->urb, i); 2242197ba5f4SPaul Zimmerman urb->iso_frame_desc[i].status = 2243197ba5f4SPaul Zimmerman dwc2_hcd_urb_get_iso_desc_status(qtd->urb, i); 2244197ba5f4SPaul Zimmerman } 2245197ba5f4SPaul Zimmerman } 2246197ba5f4SPaul Zimmerman 2247197ba5f4SPaul Zimmerman urb->status = status; 2248197ba5f4SPaul Zimmerman if (!status) { 2249197ba5f4SPaul Zimmerman if ((urb->transfer_flags & URB_SHORT_NOT_OK) && 2250197ba5f4SPaul Zimmerman urb->actual_length < urb->transfer_buffer_length) 2251197ba5f4SPaul Zimmerman urb->status = -EREMOTEIO; 2252197ba5f4SPaul Zimmerman } 2253197ba5f4SPaul Zimmerman 2254197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS || 2255197ba5f4SPaul Zimmerman usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { 2256197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep = urb->ep; 2257197ba5f4SPaul Zimmerman 2258197ba5f4SPaul Zimmerman if (ep) 2259197ba5f4SPaul Zimmerman dwc2_free_bus_bandwidth(dwc2_hsotg_to_hcd(hsotg), 2260197ba5f4SPaul Zimmerman dwc2_hcd_get_ep_bandwidth(hsotg, ep), 2261197ba5f4SPaul Zimmerman urb); 2262197ba5f4SPaul Zimmerman } 2263197ba5f4SPaul Zimmerman 2264197ba5f4SPaul Zimmerman usb_hcd_unlink_urb_from_ep(dwc2_hsotg_to_hcd(hsotg), urb); 2265197ba5f4SPaul Zimmerman urb->hcpriv = NULL; 2266197ba5f4SPaul Zimmerman kfree(qtd->urb); 2267197ba5f4SPaul Zimmerman qtd->urb = NULL; 2268197ba5f4SPaul Zimmerman 2269197ba5f4SPaul Zimmerman spin_unlock(&hsotg->lock); 2270197ba5f4SPaul Zimmerman usb_hcd_giveback_urb(dwc2_hsotg_to_hcd(hsotg), urb, status); 2271197ba5f4SPaul Zimmerman spin_lock(&hsotg->lock); 2272197ba5f4SPaul Zimmerman } 2273197ba5f4SPaul Zimmerman 2274197ba5f4SPaul Zimmerman /* 2275197ba5f4SPaul Zimmerman * Work queue function for starting the HCD when A-Cable is connected 2276197ba5f4SPaul Zimmerman */ 2277197ba5f4SPaul Zimmerman static void dwc2_hcd_start_func(struct work_struct *work) 2278197ba5f4SPaul Zimmerman { 2279197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = container_of(work, struct dwc2_hsotg, 2280197ba5f4SPaul Zimmerman start_work.work); 2281197ba5f4SPaul Zimmerman 2282197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "%s() %p\n", __func__, hsotg); 2283197ba5f4SPaul Zimmerman dwc2_host_start(hsotg); 2284197ba5f4SPaul Zimmerman } 2285197ba5f4SPaul Zimmerman 2286197ba5f4SPaul Zimmerman /* 2287197ba5f4SPaul Zimmerman * Reset work queue function 2288197ba5f4SPaul Zimmerman */ 2289197ba5f4SPaul Zimmerman static void dwc2_hcd_reset_func(struct work_struct *work) 2290197ba5f4SPaul Zimmerman { 2291197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = container_of(work, struct dwc2_hsotg, 2292197ba5f4SPaul Zimmerman reset_work.work); 2293197ba5f4SPaul Zimmerman u32 hprt0; 2294197ba5f4SPaul Zimmerman 2295197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "USB RESET function called\n"); 2296197ba5f4SPaul Zimmerman hprt0 = dwc2_read_hprt0(hsotg); 2297197ba5f4SPaul Zimmerman hprt0 &= ~HPRT0_RST; 229895c8bc36SAntti Seppälä dwc2_writel(hprt0, hsotg->regs + HPRT0); 2299197ba5f4SPaul Zimmerman hsotg->flags.b.port_reset_change = 1; 2300197ba5f4SPaul Zimmerman } 2301197ba5f4SPaul Zimmerman 2302197ba5f4SPaul Zimmerman /* 2303197ba5f4SPaul Zimmerman * ========================================================================= 2304197ba5f4SPaul Zimmerman * Linux HC Driver Functions 2305197ba5f4SPaul Zimmerman * ========================================================================= 2306197ba5f4SPaul Zimmerman */ 2307197ba5f4SPaul Zimmerman 2308197ba5f4SPaul Zimmerman /* 2309197ba5f4SPaul Zimmerman * Initializes the DWC_otg controller and its root hub and prepares it for host 2310197ba5f4SPaul Zimmerman * mode operation. Activates the root port. Returns 0 on success and a negative 2311197ba5f4SPaul Zimmerman * error code on failure. 2312197ba5f4SPaul Zimmerman */ 2313197ba5f4SPaul Zimmerman static int _dwc2_hcd_start(struct usb_hcd *hcd) 2314197ba5f4SPaul Zimmerman { 2315197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2316197ba5f4SPaul Zimmerman struct usb_bus *bus = hcd_to_bus(hcd); 2317197ba5f4SPaul Zimmerman unsigned long flags; 2318197ba5f4SPaul Zimmerman 2319197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD START\n"); 2320197ba5f4SPaul Zimmerman 2321197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 232231927b6bSGregory Herrero hsotg->lx_state = DWC2_L0; 2323197ba5f4SPaul Zimmerman hcd->state = HC_STATE_RUNNING; 232431927b6bSGregory Herrero set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2325197ba5f4SPaul Zimmerman 2326197ba5f4SPaul Zimmerman if (dwc2_is_device_mode(hsotg)) { 2327197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2328197ba5f4SPaul Zimmerman return 0; /* why 0 ?? */ 2329197ba5f4SPaul Zimmerman } 2330197ba5f4SPaul Zimmerman 2331197ba5f4SPaul Zimmerman dwc2_hcd_reinit(hsotg); 2332197ba5f4SPaul Zimmerman 2333197ba5f4SPaul Zimmerman /* Initialize and connect root hub if one is not already attached */ 2334197ba5f4SPaul Zimmerman if (bus->root_hub) { 2335197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD Has Root Hub\n"); 2336197ba5f4SPaul Zimmerman /* Inform the HUB driver to resume */ 2337197ba5f4SPaul Zimmerman usb_hcd_resume_root_hub(hcd); 2338197ba5f4SPaul Zimmerman } 2339197ba5f4SPaul Zimmerman 2340197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2341197ba5f4SPaul Zimmerman return 0; 2342197ba5f4SPaul Zimmerman } 2343197ba5f4SPaul Zimmerman 2344197ba5f4SPaul Zimmerman /* 2345197ba5f4SPaul Zimmerman * Halts the DWC_otg host mode operations in a clean manner. USB transfers are 2346197ba5f4SPaul Zimmerman * stopped. 2347197ba5f4SPaul Zimmerman */ 2348197ba5f4SPaul Zimmerman static void _dwc2_hcd_stop(struct usb_hcd *hcd) 2349197ba5f4SPaul Zimmerman { 2350197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2351197ba5f4SPaul Zimmerman unsigned long flags; 2352197ba5f4SPaul Zimmerman 2353*5bbf6ce0SGregory Herrero /* Turn off all host-specific interrupts */ 2354*5bbf6ce0SGregory Herrero dwc2_disable_host_interrupts(hsotg); 2355*5bbf6ce0SGregory Herrero 2356091473adSGregory Herrero /* Wait for interrupt processing to finish */ 2357091473adSGregory Herrero synchronize_irq(hcd->irq); 2358091473adSGregory Herrero 2359197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 2360091473adSGregory Herrero /* Ensure hcd is disconnected */ 2361091473adSGregory Herrero dwc2_hcd_disconnect(hsotg); 2362197ba5f4SPaul Zimmerman dwc2_hcd_stop(hsotg); 236331927b6bSGregory Herrero hsotg->lx_state = DWC2_L3; 236431927b6bSGregory Herrero hcd->state = HC_STATE_HALT; 236531927b6bSGregory Herrero clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2366197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2367197ba5f4SPaul Zimmerman 2368197ba5f4SPaul Zimmerman usleep_range(1000, 3000); 2369197ba5f4SPaul Zimmerman } 2370197ba5f4SPaul Zimmerman 237199a65798SGregory Herrero static int _dwc2_hcd_suspend(struct usb_hcd *hcd) 237299a65798SGregory Herrero { 237399a65798SGregory Herrero struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2374a2a23d3fSGregory Herrero unsigned long flags; 2375a2a23d3fSGregory Herrero int ret = 0; 2376a2a23d3fSGregory Herrero u32 hprt0; 237799a65798SGregory Herrero 2378a2a23d3fSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 2379a2a23d3fSGregory Herrero 2380a2a23d3fSGregory Herrero if (hsotg->lx_state != DWC2_L0) 2381a2a23d3fSGregory Herrero goto unlock; 2382a2a23d3fSGregory Herrero 2383a2a23d3fSGregory Herrero if (!HCD_HW_ACCESSIBLE(hcd)) 2384a2a23d3fSGregory Herrero goto unlock; 2385a2a23d3fSGregory Herrero 2386a2a23d3fSGregory Herrero if (!hsotg->core_params->hibernation) 2387a2a23d3fSGregory Herrero goto skip_power_saving; 2388a2a23d3fSGregory Herrero 2389a2a23d3fSGregory Herrero /* 2390a2a23d3fSGregory Herrero * Drive USB suspend and disable port Power 2391a2a23d3fSGregory Herrero * if usb bus is not suspended. 2392a2a23d3fSGregory Herrero */ 2393a2a23d3fSGregory Herrero if (!hsotg->bus_suspended) { 2394a2a23d3fSGregory Herrero hprt0 = dwc2_read_hprt0(hsotg); 2395a2a23d3fSGregory Herrero hprt0 |= HPRT0_SUSP; 2396a2a23d3fSGregory Herrero hprt0 &= ~HPRT0_PWR; 2397a2a23d3fSGregory Herrero dwc2_writel(hprt0, hsotg->regs + HPRT0); 2398a2a23d3fSGregory Herrero } 2399a2a23d3fSGregory Herrero 2400a2a23d3fSGregory Herrero /* Enter hibernation */ 2401a2a23d3fSGregory Herrero ret = dwc2_enter_hibernation(hsotg); 2402a2a23d3fSGregory Herrero if (ret) { 2403a2a23d3fSGregory Herrero if (ret != -ENOTSUPP) 2404a2a23d3fSGregory Herrero dev_err(hsotg->dev, 2405a2a23d3fSGregory Herrero "enter hibernation failed\n"); 2406a2a23d3fSGregory Herrero goto skip_power_saving; 2407a2a23d3fSGregory Herrero } 2408a2a23d3fSGregory Herrero 2409a2a23d3fSGregory Herrero /* Ask phy to be suspended */ 2410a2a23d3fSGregory Herrero if (!IS_ERR_OR_NULL(hsotg->uphy)) { 2411a2a23d3fSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2412a2a23d3fSGregory Herrero usb_phy_set_suspend(hsotg->uphy, true); 2413a2a23d3fSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 2414a2a23d3fSGregory Herrero } 2415a2a23d3fSGregory Herrero 2416a2a23d3fSGregory Herrero /* After entering hibernation, hardware is no more accessible */ 2417a2a23d3fSGregory Herrero clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2418a2a23d3fSGregory Herrero 2419a2a23d3fSGregory Herrero skip_power_saving: 242099a65798SGregory Herrero hsotg->lx_state = DWC2_L2; 2421a2a23d3fSGregory Herrero unlock: 2422a2a23d3fSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2423a2a23d3fSGregory Herrero 2424a2a23d3fSGregory Herrero return ret; 242599a65798SGregory Herrero } 242699a65798SGregory Herrero 242799a65798SGregory Herrero static int _dwc2_hcd_resume(struct usb_hcd *hcd) 242899a65798SGregory Herrero { 242999a65798SGregory Herrero struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2430a2a23d3fSGregory Herrero unsigned long flags; 2431a2a23d3fSGregory Herrero int ret = 0; 2432a2a23d3fSGregory Herrero 2433a2a23d3fSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 2434a2a23d3fSGregory Herrero 2435a2a23d3fSGregory Herrero if (hsotg->lx_state != DWC2_L2) 2436a2a23d3fSGregory Herrero goto unlock; 2437a2a23d3fSGregory Herrero 2438a2a23d3fSGregory Herrero if (!hsotg->core_params->hibernation) { 2439a2a23d3fSGregory Herrero hsotg->lx_state = DWC2_L0; 2440a2a23d3fSGregory Herrero goto unlock; 2441a2a23d3fSGregory Herrero } 2442a2a23d3fSGregory Herrero 2443a2a23d3fSGregory Herrero /* 2444a2a23d3fSGregory Herrero * Set HW accessible bit before powering on the controller 2445a2a23d3fSGregory Herrero * since an interrupt may rise. 2446a2a23d3fSGregory Herrero */ 2447a2a23d3fSGregory Herrero set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2448a2a23d3fSGregory Herrero 2449a2a23d3fSGregory Herrero /* 2450a2a23d3fSGregory Herrero * Enable power if not already done. 2451a2a23d3fSGregory Herrero * This must not be spinlocked since duration 2452a2a23d3fSGregory Herrero * of this call is unknown. 2453a2a23d3fSGregory Herrero */ 2454a2a23d3fSGregory Herrero if (!IS_ERR_OR_NULL(hsotg->uphy)) { 2455a2a23d3fSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2456a2a23d3fSGregory Herrero usb_phy_set_suspend(hsotg->uphy, false); 2457a2a23d3fSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 2458a2a23d3fSGregory Herrero } 2459a2a23d3fSGregory Herrero 2460a2a23d3fSGregory Herrero /* Exit hibernation */ 2461a2a23d3fSGregory Herrero ret = dwc2_exit_hibernation(hsotg, true); 2462a2a23d3fSGregory Herrero if (ret && (ret != -ENOTSUPP)) 2463a2a23d3fSGregory Herrero dev_err(hsotg->dev, "exit hibernation failed\n"); 246499a65798SGregory Herrero 246599a65798SGregory Herrero hsotg->lx_state = DWC2_L0; 2466a2a23d3fSGregory Herrero 2467a2a23d3fSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2468a2a23d3fSGregory Herrero 2469a2a23d3fSGregory Herrero if (hsotg->bus_suspended) { 2470a2a23d3fSGregory Herrero spin_lock_irqsave(&hsotg->lock, flags); 2471a2a23d3fSGregory Herrero hsotg->flags.b.port_suspend_change = 1; 2472a2a23d3fSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2473a2a23d3fSGregory Herrero dwc2_port_resume(hsotg); 2474a2a23d3fSGregory Herrero } else { 2475a2a23d3fSGregory Herrero /* 2476a2a23d3fSGregory Herrero * Clear Port Enable and Port Status changes. 2477a2a23d3fSGregory Herrero * Enable Port Power. 2478a2a23d3fSGregory Herrero */ 2479a2a23d3fSGregory Herrero dwc2_writel(HPRT0_PWR | HPRT0_CONNDET | 2480a2a23d3fSGregory Herrero HPRT0_ENACHG, hsotg->regs + HPRT0); 2481a2a23d3fSGregory Herrero /* Wait for controller to detect Port Connect */ 2482a2a23d3fSGregory Herrero mdelay(5); 2483a2a23d3fSGregory Herrero } 2484a2a23d3fSGregory Herrero 2485a2a23d3fSGregory Herrero return ret; 2486a2a23d3fSGregory Herrero unlock: 2487a2a23d3fSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2488a2a23d3fSGregory Herrero 2489a2a23d3fSGregory Herrero return ret; 249099a65798SGregory Herrero } 249199a65798SGregory Herrero 2492197ba5f4SPaul Zimmerman /* Returns the current frame number */ 2493197ba5f4SPaul Zimmerman static int _dwc2_hcd_get_frame_number(struct usb_hcd *hcd) 2494197ba5f4SPaul Zimmerman { 2495197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2496197ba5f4SPaul Zimmerman 2497197ba5f4SPaul Zimmerman return dwc2_hcd_get_frame_number(hsotg); 2498197ba5f4SPaul Zimmerman } 2499197ba5f4SPaul Zimmerman 2500197ba5f4SPaul Zimmerman static void dwc2_dump_urb_info(struct usb_hcd *hcd, struct urb *urb, 2501197ba5f4SPaul Zimmerman char *fn_name) 2502197ba5f4SPaul Zimmerman { 2503197ba5f4SPaul Zimmerman #ifdef VERBOSE_DEBUG 2504197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2505197ba5f4SPaul Zimmerman char *pipetype; 2506197ba5f4SPaul Zimmerman char *speed; 2507197ba5f4SPaul Zimmerman 2508197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "%s, urb %p\n", fn_name, urb); 2509197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Device address: %d\n", 2510197ba5f4SPaul Zimmerman usb_pipedevice(urb->pipe)); 2511197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Endpoint: %d, %s\n", 2512197ba5f4SPaul Zimmerman usb_pipeendpoint(urb->pipe), 2513197ba5f4SPaul Zimmerman usb_pipein(urb->pipe) ? "IN" : "OUT"); 2514197ba5f4SPaul Zimmerman 2515197ba5f4SPaul Zimmerman switch (usb_pipetype(urb->pipe)) { 2516197ba5f4SPaul Zimmerman case PIPE_CONTROL: 2517197ba5f4SPaul Zimmerman pipetype = "CONTROL"; 2518197ba5f4SPaul Zimmerman break; 2519197ba5f4SPaul Zimmerman case PIPE_BULK: 2520197ba5f4SPaul Zimmerman pipetype = "BULK"; 2521197ba5f4SPaul Zimmerman break; 2522197ba5f4SPaul Zimmerman case PIPE_INTERRUPT: 2523197ba5f4SPaul Zimmerman pipetype = "INTERRUPT"; 2524197ba5f4SPaul Zimmerman break; 2525197ba5f4SPaul Zimmerman case PIPE_ISOCHRONOUS: 2526197ba5f4SPaul Zimmerman pipetype = "ISOCHRONOUS"; 2527197ba5f4SPaul Zimmerman break; 2528197ba5f4SPaul Zimmerman default: 2529197ba5f4SPaul Zimmerman pipetype = "UNKNOWN"; 2530197ba5f4SPaul Zimmerman break; 2531197ba5f4SPaul Zimmerman } 2532197ba5f4SPaul Zimmerman 2533197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Endpoint type: %s %s (%s)\n", pipetype, 2534197ba5f4SPaul Zimmerman usb_urb_dir_in(urb) ? "IN" : "OUT", usb_pipein(urb->pipe) ? 2535197ba5f4SPaul Zimmerman "IN" : "OUT"); 2536197ba5f4SPaul Zimmerman 2537197ba5f4SPaul Zimmerman switch (urb->dev->speed) { 2538197ba5f4SPaul Zimmerman case USB_SPEED_HIGH: 2539197ba5f4SPaul Zimmerman speed = "HIGH"; 2540197ba5f4SPaul Zimmerman break; 2541197ba5f4SPaul Zimmerman case USB_SPEED_FULL: 2542197ba5f4SPaul Zimmerman speed = "FULL"; 2543197ba5f4SPaul Zimmerman break; 2544197ba5f4SPaul Zimmerman case USB_SPEED_LOW: 2545197ba5f4SPaul Zimmerman speed = "LOW"; 2546197ba5f4SPaul Zimmerman break; 2547197ba5f4SPaul Zimmerman default: 2548197ba5f4SPaul Zimmerman speed = "UNKNOWN"; 2549197ba5f4SPaul Zimmerman break; 2550197ba5f4SPaul Zimmerman } 2551197ba5f4SPaul Zimmerman 2552197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Speed: %s\n", speed); 2553197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Max packet size: %d\n", 2554197ba5f4SPaul Zimmerman usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))); 2555197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Data buffer length: %d\n", 2556197ba5f4SPaul Zimmerman urb->transfer_buffer_length); 2557197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Transfer buffer: %p, Transfer DMA: %08lx\n", 2558197ba5f4SPaul Zimmerman urb->transfer_buffer, (unsigned long)urb->transfer_dma); 2559197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Setup buffer: %p, Setup DMA: %08lx\n", 2560197ba5f4SPaul Zimmerman urb->setup_packet, (unsigned long)urb->setup_dma); 2561197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " Interval: %d\n", urb->interval); 2562197ba5f4SPaul Zimmerman 2563197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { 2564197ba5f4SPaul Zimmerman int i; 2565197ba5f4SPaul Zimmerman 2566197ba5f4SPaul Zimmerman for (i = 0; i < urb->number_of_packets; i++) { 2567197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " ISO Desc %d:\n", i); 2568197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, " offset: %d, length %d\n", 2569197ba5f4SPaul Zimmerman urb->iso_frame_desc[i].offset, 2570197ba5f4SPaul Zimmerman urb->iso_frame_desc[i].length); 2571197ba5f4SPaul Zimmerman } 2572197ba5f4SPaul Zimmerman } 2573197ba5f4SPaul Zimmerman #endif 2574197ba5f4SPaul Zimmerman } 2575197ba5f4SPaul Zimmerman 2576197ba5f4SPaul Zimmerman /* 2577197ba5f4SPaul Zimmerman * Starts processing a USB transfer request specified by a USB Request Block 2578197ba5f4SPaul Zimmerman * (URB). mem_flags indicates the type of memory allocation to use while 2579197ba5f4SPaul Zimmerman * processing this URB. 2580197ba5f4SPaul Zimmerman */ 2581197ba5f4SPaul Zimmerman static int _dwc2_hcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, 2582197ba5f4SPaul Zimmerman gfp_t mem_flags) 2583197ba5f4SPaul Zimmerman { 2584197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2585197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep = urb->ep; 2586197ba5f4SPaul Zimmerman struct dwc2_hcd_urb *dwc2_urb; 2587197ba5f4SPaul Zimmerman int i; 2588197ba5f4SPaul Zimmerman int retval; 2589197ba5f4SPaul Zimmerman int alloc_bandwidth = 0; 2590197ba5f4SPaul Zimmerman u8 ep_type = 0; 2591197ba5f4SPaul Zimmerman u32 tflags = 0; 2592197ba5f4SPaul Zimmerman void *buf; 2593197ba5f4SPaul Zimmerman unsigned long flags; 2594b58e6ceeSMian Yousaf Kaukab struct dwc2_qh *qh; 2595b58e6ceeSMian Yousaf Kaukab bool qh_allocated = false; 2596b5a468a6SMian Yousaf Kaukab struct dwc2_qtd *qtd; 2597197ba5f4SPaul Zimmerman 2598197ba5f4SPaul Zimmerman if (dbg_urb(urb)) { 2599197ba5f4SPaul Zimmerman dev_vdbg(hsotg->dev, "DWC OTG HCD URB Enqueue\n"); 2600197ba5f4SPaul Zimmerman dwc2_dump_urb_info(hcd, urb, "urb_enqueue"); 2601197ba5f4SPaul Zimmerman } 2602197ba5f4SPaul Zimmerman 2603197ba5f4SPaul Zimmerman if (ep == NULL) 2604197ba5f4SPaul Zimmerman return -EINVAL; 2605197ba5f4SPaul Zimmerman 2606197ba5f4SPaul Zimmerman if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS || 2607197ba5f4SPaul Zimmerman usb_pipetype(urb->pipe) == PIPE_INTERRUPT) { 2608197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 2609197ba5f4SPaul Zimmerman if (!dwc2_hcd_is_bandwidth_allocated(hsotg, ep)) 2610197ba5f4SPaul Zimmerman alloc_bandwidth = 1; 2611197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2612197ba5f4SPaul Zimmerman } 2613197ba5f4SPaul Zimmerman 2614197ba5f4SPaul Zimmerman switch (usb_pipetype(urb->pipe)) { 2615197ba5f4SPaul Zimmerman case PIPE_CONTROL: 2616197ba5f4SPaul Zimmerman ep_type = USB_ENDPOINT_XFER_CONTROL; 2617197ba5f4SPaul Zimmerman break; 2618197ba5f4SPaul Zimmerman case PIPE_ISOCHRONOUS: 2619197ba5f4SPaul Zimmerman ep_type = USB_ENDPOINT_XFER_ISOC; 2620197ba5f4SPaul Zimmerman break; 2621197ba5f4SPaul Zimmerman case PIPE_BULK: 2622197ba5f4SPaul Zimmerman ep_type = USB_ENDPOINT_XFER_BULK; 2623197ba5f4SPaul Zimmerman break; 2624197ba5f4SPaul Zimmerman case PIPE_INTERRUPT: 2625197ba5f4SPaul Zimmerman ep_type = USB_ENDPOINT_XFER_INT; 2626197ba5f4SPaul Zimmerman break; 2627197ba5f4SPaul Zimmerman default: 2628197ba5f4SPaul Zimmerman dev_warn(hsotg->dev, "Wrong ep type\n"); 2629197ba5f4SPaul Zimmerman } 2630197ba5f4SPaul Zimmerman 2631197ba5f4SPaul Zimmerman dwc2_urb = dwc2_hcd_urb_alloc(hsotg, urb->number_of_packets, 2632197ba5f4SPaul Zimmerman mem_flags); 2633197ba5f4SPaul Zimmerman if (!dwc2_urb) 2634197ba5f4SPaul Zimmerman return -ENOMEM; 2635197ba5f4SPaul Zimmerman 2636197ba5f4SPaul Zimmerman dwc2_hcd_urb_set_pipeinfo(hsotg, dwc2_urb, usb_pipedevice(urb->pipe), 2637197ba5f4SPaul Zimmerman usb_pipeendpoint(urb->pipe), ep_type, 2638197ba5f4SPaul Zimmerman usb_pipein(urb->pipe), 2639197ba5f4SPaul Zimmerman usb_maxpacket(urb->dev, urb->pipe, 2640197ba5f4SPaul Zimmerman !(usb_pipein(urb->pipe)))); 2641197ba5f4SPaul Zimmerman 2642197ba5f4SPaul Zimmerman buf = urb->transfer_buffer; 2643197ba5f4SPaul Zimmerman 2644197ba5f4SPaul Zimmerman if (hcd->self.uses_dma) { 2645197ba5f4SPaul Zimmerman if (!buf && (urb->transfer_dma & 3)) { 2646197ba5f4SPaul Zimmerman dev_err(hsotg->dev, 2647197ba5f4SPaul Zimmerman "%s: unaligned transfer with no transfer_buffer", 2648197ba5f4SPaul Zimmerman __func__); 2649197ba5f4SPaul Zimmerman retval = -EINVAL; 265033ad261aSGregory Herrero goto fail0; 2651197ba5f4SPaul Zimmerman } 2652197ba5f4SPaul Zimmerman } 2653197ba5f4SPaul Zimmerman 2654197ba5f4SPaul Zimmerman if (!(urb->transfer_flags & URB_NO_INTERRUPT)) 2655197ba5f4SPaul Zimmerman tflags |= URB_GIVEBACK_ASAP; 2656197ba5f4SPaul Zimmerman if (urb->transfer_flags & URB_ZERO_PACKET) 2657197ba5f4SPaul Zimmerman tflags |= URB_SEND_ZERO_PACKET; 2658197ba5f4SPaul Zimmerman 2659197ba5f4SPaul Zimmerman dwc2_urb->priv = urb; 2660197ba5f4SPaul Zimmerman dwc2_urb->buf = buf; 2661197ba5f4SPaul Zimmerman dwc2_urb->dma = urb->transfer_dma; 2662197ba5f4SPaul Zimmerman dwc2_urb->length = urb->transfer_buffer_length; 2663197ba5f4SPaul Zimmerman dwc2_urb->setup_packet = urb->setup_packet; 2664197ba5f4SPaul Zimmerman dwc2_urb->setup_dma = urb->setup_dma; 2665197ba5f4SPaul Zimmerman dwc2_urb->flags = tflags; 2666197ba5f4SPaul Zimmerman dwc2_urb->interval = urb->interval; 2667197ba5f4SPaul Zimmerman dwc2_urb->status = -EINPROGRESS; 2668197ba5f4SPaul Zimmerman 2669197ba5f4SPaul Zimmerman for (i = 0; i < urb->number_of_packets; ++i) 2670197ba5f4SPaul Zimmerman dwc2_hcd_urb_set_iso_desc_params(dwc2_urb, i, 2671197ba5f4SPaul Zimmerman urb->iso_frame_desc[i].offset, 2672197ba5f4SPaul Zimmerman urb->iso_frame_desc[i].length); 2673197ba5f4SPaul Zimmerman 2674197ba5f4SPaul Zimmerman urb->hcpriv = dwc2_urb; 2675b58e6ceeSMian Yousaf Kaukab qh = (struct dwc2_qh *) ep->hcpriv; 2676b58e6ceeSMian Yousaf Kaukab /* Create QH for the endpoint if it doesn't exist */ 2677b58e6ceeSMian Yousaf Kaukab if (!qh) { 2678b58e6ceeSMian Yousaf Kaukab qh = dwc2_hcd_qh_create(hsotg, dwc2_urb, mem_flags); 2679b58e6ceeSMian Yousaf Kaukab if (!qh) { 2680b58e6ceeSMian Yousaf Kaukab retval = -ENOMEM; 2681b58e6ceeSMian Yousaf Kaukab goto fail0; 2682b58e6ceeSMian Yousaf Kaukab } 2683b58e6ceeSMian Yousaf Kaukab ep->hcpriv = qh; 2684b58e6ceeSMian Yousaf Kaukab qh_allocated = true; 2685b58e6ceeSMian Yousaf Kaukab } 2686197ba5f4SPaul Zimmerman 2687b5a468a6SMian Yousaf Kaukab qtd = kzalloc(sizeof(*qtd), mem_flags); 2688b5a468a6SMian Yousaf Kaukab if (!qtd) { 2689b5a468a6SMian Yousaf Kaukab retval = -ENOMEM; 2690b5a468a6SMian Yousaf Kaukab goto fail1; 2691b5a468a6SMian Yousaf Kaukab } 2692b5a468a6SMian Yousaf Kaukab 2693197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 2694197ba5f4SPaul Zimmerman retval = usb_hcd_link_urb_to_ep(hcd, urb); 2695197ba5f4SPaul Zimmerman if (retval) 2696197ba5f4SPaul Zimmerman goto fail2; 2697197ba5f4SPaul Zimmerman 2698b5a468a6SMian Yousaf Kaukab retval = dwc2_hcd_urb_enqueue(hsotg, dwc2_urb, qh, qtd); 2699b5a468a6SMian Yousaf Kaukab if (retval) 2700b5a468a6SMian Yousaf Kaukab goto fail3; 2701b5a468a6SMian Yousaf Kaukab 2702197ba5f4SPaul Zimmerman if (alloc_bandwidth) { 2703197ba5f4SPaul Zimmerman dwc2_allocate_bus_bandwidth(hcd, 2704197ba5f4SPaul Zimmerman dwc2_hcd_get_ep_bandwidth(hsotg, ep), 2705197ba5f4SPaul Zimmerman urb); 2706197ba5f4SPaul Zimmerman } 2707197ba5f4SPaul Zimmerman 270833ad261aSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 270933ad261aSGregory Herrero 2710197ba5f4SPaul Zimmerman return 0; 2711197ba5f4SPaul Zimmerman 2712b5a468a6SMian Yousaf Kaukab fail3: 2713197ba5f4SPaul Zimmerman dwc2_urb->priv = NULL; 2714197ba5f4SPaul Zimmerman usb_hcd_unlink_urb_from_ep(hcd, urb); 2715b5a468a6SMian Yousaf Kaukab fail2: 271633ad261aSGregory Herrero spin_unlock_irqrestore(&hsotg->lock, flags); 2717197ba5f4SPaul Zimmerman urb->hcpriv = NULL; 2718b5a468a6SMian Yousaf Kaukab kfree(qtd); 2719b5a468a6SMian Yousaf Kaukab fail1: 2720b58e6ceeSMian Yousaf Kaukab if (qh_allocated) { 2721b58e6ceeSMian Yousaf Kaukab struct dwc2_qtd *qtd2, *qtd2_tmp; 2722b58e6ceeSMian Yousaf Kaukab 2723b58e6ceeSMian Yousaf Kaukab ep->hcpriv = NULL; 2724b58e6ceeSMian Yousaf Kaukab dwc2_hcd_qh_unlink(hsotg, qh); 2725b58e6ceeSMian Yousaf Kaukab /* Free each QTD in the QH's QTD list */ 2726b58e6ceeSMian Yousaf Kaukab list_for_each_entry_safe(qtd2, qtd2_tmp, &qh->qtd_list, 2727b58e6ceeSMian Yousaf Kaukab qtd_list_entry) 2728b58e6ceeSMian Yousaf Kaukab dwc2_hcd_qtd_unlink_and_free(hsotg, qtd2, qh); 2729b58e6ceeSMian Yousaf Kaukab dwc2_hcd_qh_free(hsotg, qh); 2730b58e6ceeSMian Yousaf Kaukab } 273133ad261aSGregory Herrero fail0: 2732197ba5f4SPaul Zimmerman kfree(dwc2_urb); 2733197ba5f4SPaul Zimmerman 2734197ba5f4SPaul Zimmerman return retval; 2735197ba5f4SPaul Zimmerman } 2736197ba5f4SPaul Zimmerman 2737197ba5f4SPaul Zimmerman /* 2738197ba5f4SPaul Zimmerman * Aborts/cancels a USB transfer request. Always returns 0 to indicate success. 2739197ba5f4SPaul Zimmerman */ 2740197ba5f4SPaul Zimmerman static int _dwc2_hcd_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 2741197ba5f4SPaul Zimmerman int status) 2742197ba5f4SPaul Zimmerman { 2743197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2744197ba5f4SPaul Zimmerman int rc; 2745197ba5f4SPaul Zimmerman unsigned long flags; 2746197ba5f4SPaul Zimmerman 2747197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD URB Dequeue\n"); 2748197ba5f4SPaul Zimmerman dwc2_dump_urb_info(hcd, urb, "urb_dequeue"); 2749197ba5f4SPaul Zimmerman 2750197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 2751197ba5f4SPaul Zimmerman 2752197ba5f4SPaul Zimmerman rc = usb_hcd_check_unlink_urb(hcd, urb, status); 2753197ba5f4SPaul Zimmerman if (rc) 2754197ba5f4SPaul Zimmerman goto out; 2755197ba5f4SPaul Zimmerman 2756197ba5f4SPaul Zimmerman if (!urb->hcpriv) { 2757197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "## urb->hcpriv is NULL ##\n"); 2758197ba5f4SPaul Zimmerman goto out; 2759197ba5f4SPaul Zimmerman } 2760197ba5f4SPaul Zimmerman 2761197ba5f4SPaul Zimmerman rc = dwc2_hcd_urb_dequeue(hsotg, urb->hcpriv); 2762197ba5f4SPaul Zimmerman 2763197ba5f4SPaul Zimmerman usb_hcd_unlink_urb_from_ep(hcd, urb); 2764197ba5f4SPaul Zimmerman 2765197ba5f4SPaul Zimmerman kfree(urb->hcpriv); 2766197ba5f4SPaul Zimmerman urb->hcpriv = NULL; 2767197ba5f4SPaul Zimmerman 2768197ba5f4SPaul Zimmerman /* Higher layer software sets URB status */ 2769197ba5f4SPaul Zimmerman spin_unlock(&hsotg->lock); 2770197ba5f4SPaul Zimmerman usb_hcd_giveback_urb(hcd, urb, status); 2771197ba5f4SPaul Zimmerman spin_lock(&hsotg->lock); 2772197ba5f4SPaul Zimmerman 2773197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "Called usb_hcd_giveback_urb()\n"); 2774197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, " urb->status = %d\n", urb->status); 2775197ba5f4SPaul Zimmerman out: 2776197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2777197ba5f4SPaul Zimmerman 2778197ba5f4SPaul Zimmerman return rc; 2779197ba5f4SPaul Zimmerman } 2780197ba5f4SPaul Zimmerman 2781197ba5f4SPaul Zimmerman /* 2782197ba5f4SPaul Zimmerman * Frees resources in the DWC_otg controller related to a given endpoint. Also 2783197ba5f4SPaul Zimmerman * clears state in the HCD related to the endpoint. Any URBs for the endpoint 2784197ba5f4SPaul Zimmerman * must already be dequeued. 2785197ba5f4SPaul Zimmerman */ 2786197ba5f4SPaul Zimmerman static void _dwc2_hcd_endpoint_disable(struct usb_hcd *hcd, 2787197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep) 2788197ba5f4SPaul Zimmerman { 2789197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2790197ba5f4SPaul Zimmerman 2791197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2792197ba5f4SPaul Zimmerman "DWC OTG HCD EP DISABLE: bEndpointAddress=0x%02x, ep->hcpriv=%p\n", 2793197ba5f4SPaul Zimmerman ep->desc.bEndpointAddress, ep->hcpriv); 2794197ba5f4SPaul Zimmerman dwc2_hcd_endpoint_disable(hsotg, ep, 250); 2795197ba5f4SPaul Zimmerman } 2796197ba5f4SPaul Zimmerman 2797197ba5f4SPaul Zimmerman /* 2798197ba5f4SPaul Zimmerman * Resets endpoint specific parameter values, in current version used to reset 2799197ba5f4SPaul Zimmerman * the data toggle (as a WA). This function can be called from usb_clear_halt 2800197ba5f4SPaul Zimmerman * routine. 2801197ba5f4SPaul Zimmerman */ 2802197ba5f4SPaul Zimmerman static void _dwc2_hcd_endpoint_reset(struct usb_hcd *hcd, 2803197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep) 2804197ba5f4SPaul Zimmerman { 2805197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2806197ba5f4SPaul Zimmerman unsigned long flags; 2807197ba5f4SPaul Zimmerman 2808197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, 2809197ba5f4SPaul Zimmerman "DWC OTG HCD EP RESET: bEndpointAddress=0x%02x\n", 2810197ba5f4SPaul Zimmerman ep->desc.bEndpointAddress); 2811197ba5f4SPaul Zimmerman 2812197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 2813197ba5f4SPaul Zimmerman dwc2_hcd_endpoint_reset(hsotg, ep); 2814197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2815197ba5f4SPaul Zimmerman } 2816197ba5f4SPaul Zimmerman 2817197ba5f4SPaul Zimmerman /* 2818197ba5f4SPaul Zimmerman * Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if 2819197ba5f4SPaul Zimmerman * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid 2820197ba5f4SPaul Zimmerman * interrupt. 2821197ba5f4SPaul Zimmerman * 2822197ba5f4SPaul Zimmerman * This function is called by the USB core when an interrupt occurs 2823197ba5f4SPaul Zimmerman */ 2824197ba5f4SPaul Zimmerman static irqreturn_t _dwc2_hcd_irq(struct usb_hcd *hcd) 2825197ba5f4SPaul Zimmerman { 2826197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2827197ba5f4SPaul Zimmerman 2828197ba5f4SPaul Zimmerman return dwc2_handle_hcd_intr(hsotg); 2829197ba5f4SPaul Zimmerman } 2830197ba5f4SPaul Zimmerman 2831197ba5f4SPaul Zimmerman /* 2832197ba5f4SPaul Zimmerman * Creates Status Change bitmap for the root hub and root port. The bitmap is 2833197ba5f4SPaul Zimmerman * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1 2834197ba5f4SPaul Zimmerman * is the status change indicator for the single root port. Returns 1 if either 2835197ba5f4SPaul Zimmerman * change indicator is 1, otherwise returns 0. 2836197ba5f4SPaul Zimmerman */ 2837197ba5f4SPaul Zimmerman static int _dwc2_hcd_hub_status_data(struct usb_hcd *hcd, char *buf) 2838197ba5f4SPaul Zimmerman { 2839197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2840197ba5f4SPaul Zimmerman 2841197ba5f4SPaul Zimmerman buf[0] = dwc2_hcd_is_status_changed(hsotg, 1) << 1; 2842197ba5f4SPaul Zimmerman return buf[0] != 0; 2843197ba5f4SPaul Zimmerman } 2844197ba5f4SPaul Zimmerman 2845197ba5f4SPaul Zimmerman /* Handles hub class-specific requests */ 2846197ba5f4SPaul Zimmerman static int _dwc2_hcd_hub_control(struct usb_hcd *hcd, u16 typereq, u16 wvalue, 2847197ba5f4SPaul Zimmerman u16 windex, char *buf, u16 wlength) 2848197ba5f4SPaul Zimmerman { 2849197ba5f4SPaul Zimmerman int retval = dwc2_hcd_hub_control(dwc2_hcd_to_hsotg(hcd), typereq, 2850197ba5f4SPaul Zimmerman wvalue, windex, buf, wlength); 2851197ba5f4SPaul Zimmerman return retval; 2852197ba5f4SPaul Zimmerman } 2853197ba5f4SPaul Zimmerman 2854197ba5f4SPaul Zimmerman /* Handles hub TT buffer clear completions */ 2855197ba5f4SPaul Zimmerman static void _dwc2_hcd_clear_tt_buffer_complete(struct usb_hcd *hcd, 2856197ba5f4SPaul Zimmerman struct usb_host_endpoint *ep) 2857197ba5f4SPaul Zimmerman { 2858197ba5f4SPaul Zimmerman struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); 2859197ba5f4SPaul Zimmerman struct dwc2_qh *qh; 2860197ba5f4SPaul Zimmerman unsigned long flags; 2861197ba5f4SPaul Zimmerman 2862197ba5f4SPaul Zimmerman qh = ep->hcpriv; 2863197ba5f4SPaul Zimmerman if (!qh) 2864197ba5f4SPaul Zimmerman return; 2865197ba5f4SPaul Zimmerman 2866197ba5f4SPaul Zimmerman spin_lock_irqsave(&hsotg->lock, flags); 2867197ba5f4SPaul Zimmerman qh->tt_buffer_dirty = 0; 2868197ba5f4SPaul Zimmerman 2869197ba5f4SPaul Zimmerman if (hsotg->flags.b.port_connect_status) 2870197ba5f4SPaul Zimmerman dwc2_hcd_queue_transactions(hsotg, DWC2_TRANSACTION_ALL); 2871197ba5f4SPaul Zimmerman 2872197ba5f4SPaul Zimmerman spin_unlock_irqrestore(&hsotg->lock, flags); 2873197ba5f4SPaul Zimmerman } 2874197ba5f4SPaul Zimmerman 2875197ba5f4SPaul Zimmerman static struct hc_driver dwc2_hc_driver = { 2876197ba5f4SPaul Zimmerman .description = "dwc2_hsotg", 2877197ba5f4SPaul Zimmerman .product_desc = "DWC OTG Controller", 2878197ba5f4SPaul Zimmerman .hcd_priv_size = sizeof(struct wrapper_priv_data), 2879197ba5f4SPaul Zimmerman 2880197ba5f4SPaul Zimmerman .irq = _dwc2_hcd_irq, 2881197ba5f4SPaul Zimmerman .flags = HCD_MEMORY | HCD_USB2, 2882197ba5f4SPaul Zimmerman 2883197ba5f4SPaul Zimmerman .start = _dwc2_hcd_start, 2884197ba5f4SPaul Zimmerman .stop = _dwc2_hcd_stop, 2885197ba5f4SPaul Zimmerman .urb_enqueue = _dwc2_hcd_urb_enqueue, 2886197ba5f4SPaul Zimmerman .urb_dequeue = _dwc2_hcd_urb_dequeue, 2887197ba5f4SPaul Zimmerman .endpoint_disable = _dwc2_hcd_endpoint_disable, 2888197ba5f4SPaul Zimmerman .endpoint_reset = _dwc2_hcd_endpoint_reset, 2889197ba5f4SPaul Zimmerman .get_frame_number = _dwc2_hcd_get_frame_number, 2890197ba5f4SPaul Zimmerman 2891197ba5f4SPaul Zimmerman .hub_status_data = _dwc2_hcd_hub_status_data, 2892197ba5f4SPaul Zimmerman .hub_control = _dwc2_hcd_hub_control, 2893197ba5f4SPaul Zimmerman .clear_tt_buffer_complete = _dwc2_hcd_clear_tt_buffer_complete, 289499a65798SGregory Herrero 289599a65798SGregory Herrero .bus_suspend = _dwc2_hcd_suspend, 289699a65798SGregory Herrero .bus_resume = _dwc2_hcd_resume, 2897197ba5f4SPaul Zimmerman }; 2898197ba5f4SPaul Zimmerman 2899197ba5f4SPaul Zimmerman /* 2900197ba5f4SPaul Zimmerman * Frees secondary storage associated with the dwc2_hsotg structure contained 2901197ba5f4SPaul Zimmerman * in the struct usb_hcd field 2902197ba5f4SPaul Zimmerman */ 2903197ba5f4SPaul Zimmerman static void dwc2_hcd_free(struct dwc2_hsotg *hsotg) 2904197ba5f4SPaul Zimmerman { 2905197ba5f4SPaul Zimmerman u32 ahbcfg; 2906197ba5f4SPaul Zimmerman u32 dctl; 2907197ba5f4SPaul Zimmerman int i; 2908197ba5f4SPaul Zimmerman 2909197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD FREE\n"); 2910197ba5f4SPaul Zimmerman 2911197ba5f4SPaul Zimmerman /* Free memory for QH/QTD lists */ 2912197ba5f4SPaul Zimmerman dwc2_qh_list_free(hsotg, &hsotg->non_periodic_sched_inactive); 2913197ba5f4SPaul Zimmerman dwc2_qh_list_free(hsotg, &hsotg->non_periodic_sched_active); 2914197ba5f4SPaul Zimmerman dwc2_qh_list_free(hsotg, &hsotg->periodic_sched_inactive); 2915197ba5f4SPaul Zimmerman dwc2_qh_list_free(hsotg, &hsotg->periodic_sched_ready); 2916197ba5f4SPaul Zimmerman dwc2_qh_list_free(hsotg, &hsotg->periodic_sched_assigned); 2917197ba5f4SPaul Zimmerman dwc2_qh_list_free(hsotg, &hsotg->periodic_sched_queued); 2918197ba5f4SPaul Zimmerman 2919197ba5f4SPaul Zimmerman /* Free memory for the host channels */ 2920197ba5f4SPaul Zimmerman for (i = 0; i < MAX_EPS_CHANNELS; i++) { 2921197ba5f4SPaul Zimmerman struct dwc2_host_chan *chan = hsotg->hc_ptr_array[i]; 2922197ba5f4SPaul Zimmerman 2923197ba5f4SPaul Zimmerman if (chan != NULL) { 2924197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "HCD Free channel #%i, chan=%p\n", 2925197ba5f4SPaul Zimmerman i, chan); 2926197ba5f4SPaul Zimmerman hsotg->hc_ptr_array[i] = NULL; 2927197ba5f4SPaul Zimmerman kfree(chan); 2928197ba5f4SPaul Zimmerman } 2929197ba5f4SPaul Zimmerman } 2930197ba5f4SPaul Zimmerman 2931197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) { 2932197ba5f4SPaul Zimmerman if (hsotg->status_buf) { 2933197ba5f4SPaul Zimmerman dma_free_coherent(hsotg->dev, DWC2_HCD_STATUS_BUF_SIZE, 2934197ba5f4SPaul Zimmerman hsotg->status_buf, 2935197ba5f4SPaul Zimmerman hsotg->status_buf_dma); 2936197ba5f4SPaul Zimmerman hsotg->status_buf = NULL; 2937197ba5f4SPaul Zimmerman } 2938197ba5f4SPaul Zimmerman } else { 2939197ba5f4SPaul Zimmerman kfree(hsotg->status_buf); 2940197ba5f4SPaul Zimmerman hsotg->status_buf = NULL; 2941197ba5f4SPaul Zimmerman } 2942197ba5f4SPaul Zimmerman 294395c8bc36SAntti Seppälä ahbcfg = dwc2_readl(hsotg->regs + GAHBCFG); 2944197ba5f4SPaul Zimmerman 2945197ba5f4SPaul Zimmerman /* Disable all interrupts */ 2946197ba5f4SPaul Zimmerman ahbcfg &= ~GAHBCFG_GLBL_INTR_EN; 294795c8bc36SAntti Seppälä dwc2_writel(ahbcfg, hsotg->regs + GAHBCFG); 294895c8bc36SAntti Seppälä dwc2_writel(0, hsotg->regs + GINTMSK); 2949197ba5f4SPaul Zimmerman 2950197ba5f4SPaul Zimmerman if (hsotg->hw_params.snpsid >= DWC2_CORE_REV_3_00a) { 295195c8bc36SAntti Seppälä dctl = dwc2_readl(hsotg->regs + DCTL); 2952197ba5f4SPaul Zimmerman dctl |= DCTL_SFTDISCON; 295395c8bc36SAntti Seppälä dwc2_writel(dctl, hsotg->regs + DCTL); 2954197ba5f4SPaul Zimmerman } 2955197ba5f4SPaul Zimmerman 2956197ba5f4SPaul Zimmerman if (hsotg->wq_otg) { 2957197ba5f4SPaul Zimmerman if (!cancel_work_sync(&hsotg->wf_otg)) 2958197ba5f4SPaul Zimmerman flush_workqueue(hsotg->wq_otg); 2959197ba5f4SPaul Zimmerman destroy_workqueue(hsotg->wq_otg); 2960197ba5f4SPaul Zimmerman } 2961197ba5f4SPaul Zimmerman 2962197ba5f4SPaul Zimmerman del_timer(&hsotg->wkp_timer); 2963197ba5f4SPaul Zimmerman } 2964197ba5f4SPaul Zimmerman 2965197ba5f4SPaul Zimmerman static void dwc2_hcd_release(struct dwc2_hsotg *hsotg) 2966197ba5f4SPaul Zimmerman { 2967197ba5f4SPaul Zimmerman /* Turn off all host-specific interrupts */ 2968197ba5f4SPaul Zimmerman dwc2_disable_host_interrupts(hsotg); 2969197ba5f4SPaul Zimmerman 2970197ba5f4SPaul Zimmerman dwc2_hcd_free(hsotg); 2971197ba5f4SPaul Zimmerman } 2972197ba5f4SPaul Zimmerman 2973197ba5f4SPaul Zimmerman /* 2974197ba5f4SPaul Zimmerman * Initializes the HCD. This function allocates memory for and initializes the 2975197ba5f4SPaul Zimmerman * static parts of the usb_hcd and dwc2_hsotg structures. It also registers the 2976197ba5f4SPaul Zimmerman * USB bus with the core and calls the hc_driver->start() function. It returns 2977197ba5f4SPaul Zimmerman * a negative error on failure. 2978197ba5f4SPaul Zimmerman */ 2979ecb176c6SMian Yousaf Kaukab int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq) 2980197ba5f4SPaul Zimmerman { 2981197ba5f4SPaul Zimmerman struct usb_hcd *hcd; 2982197ba5f4SPaul Zimmerman struct dwc2_host_chan *channel; 2983197ba5f4SPaul Zimmerman u32 hcfg; 2984197ba5f4SPaul Zimmerman int i, num_channels; 2985197ba5f4SPaul Zimmerman int retval; 2986197ba5f4SPaul Zimmerman 2987f5500eccSDinh Nguyen if (usb_disabled()) 2988f5500eccSDinh Nguyen return -ENODEV; 2989f5500eccSDinh Nguyen 2990197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD INIT\n"); 2991197ba5f4SPaul Zimmerman 2992197ba5f4SPaul Zimmerman retval = -ENOMEM; 2993197ba5f4SPaul Zimmerman 299495c8bc36SAntti Seppälä hcfg = dwc2_readl(hsotg->regs + HCFG); 2995197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "hcfg=%08x\n", hcfg); 2996197ba5f4SPaul Zimmerman 2997197ba5f4SPaul Zimmerman #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS 2998197ba5f4SPaul Zimmerman hsotg->frame_num_array = kzalloc(sizeof(*hsotg->frame_num_array) * 2999197ba5f4SPaul Zimmerman FRAME_NUM_ARRAY_SIZE, GFP_KERNEL); 3000197ba5f4SPaul Zimmerman if (!hsotg->frame_num_array) 3001197ba5f4SPaul Zimmerman goto error1; 3002197ba5f4SPaul Zimmerman hsotg->last_frame_num_array = kzalloc( 3003197ba5f4SPaul Zimmerman sizeof(*hsotg->last_frame_num_array) * 3004197ba5f4SPaul Zimmerman FRAME_NUM_ARRAY_SIZE, GFP_KERNEL); 3005197ba5f4SPaul Zimmerman if (!hsotg->last_frame_num_array) 3006197ba5f4SPaul Zimmerman goto error1; 3007197ba5f4SPaul Zimmerman hsotg->last_frame_num = HFNUM_MAX_FRNUM; 3008197ba5f4SPaul Zimmerman #endif 3009197ba5f4SPaul Zimmerman 3010197ba5f4SPaul Zimmerman /* Check if the bus driver or platform code has setup a dma_mask */ 3011197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0 && 3012197ba5f4SPaul Zimmerman hsotg->dev->dma_mask == NULL) { 3013197ba5f4SPaul Zimmerman dev_warn(hsotg->dev, 3014197ba5f4SPaul Zimmerman "dma_mask not set, disabling DMA\n"); 3015197ba5f4SPaul Zimmerman hsotg->core_params->dma_enable = 0; 3016197ba5f4SPaul Zimmerman hsotg->core_params->dma_desc_enable = 0; 3017197ba5f4SPaul Zimmerman } 3018197ba5f4SPaul Zimmerman 3019197ba5f4SPaul Zimmerman /* Set device flags indicating whether the HCD supports DMA */ 3020197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) { 3021197ba5f4SPaul Zimmerman if (dma_set_mask(hsotg->dev, DMA_BIT_MASK(32)) < 0) 3022197ba5f4SPaul Zimmerman dev_warn(hsotg->dev, "can't set DMA mask\n"); 3023197ba5f4SPaul Zimmerman if (dma_set_coherent_mask(hsotg->dev, DMA_BIT_MASK(32)) < 0) 3024197ba5f4SPaul Zimmerman dev_warn(hsotg->dev, "can't set coherent DMA mask\n"); 3025197ba5f4SPaul Zimmerman } 3026197ba5f4SPaul Zimmerman 3027197ba5f4SPaul Zimmerman hcd = usb_create_hcd(&dwc2_hc_driver, hsotg->dev, dev_name(hsotg->dev)); 3028197ba5f4SPaul Zimmerman if (!hcd) 3029197ba5f4SPaul Zimmerman goto error1; 3030197ba5f4SPaul Zimmerman 3031197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable <= 0) 3032197ba5f4SPaul Zimmerman hcd->self.uses_dma = 0; 3033197ba5f4SPaul Zimmerman 3034197ba5f4SPaul Zimmerman hcd->has_tt = 1; 3035197ba5f4SPaul Zimmerman 3036197ba5f4SPaul Zimmerman ((struct wrapper_priv_data *) &hcd->hcd_priv)->hsotg = hsotg; 3037197ba5f4SPaul Zimmerman hsotg->priv = hcd; 3038197ba5f4SPaul Zimmerman 3039197ba5f4SPaul Zimmerman /* 3040197ba5f4SPaul Zimmerman * Disable the global interrupt until all the interrupt handlers are 3041197ba5f4SPaul Zimmerman * installed 3042197ba5f4SPaul Zimmerman */ 3043197ba5f4SPaul Zimmerman dwc2_disable_global_interrupts(hsotg); 3044197ba5f4SPaul Zimmerman 3045197ba5f4SPaul Zimmerman /* Initialize the DWC_otg core, and select the Phy type */ 3046197ba5f4SPaul Zimmerman retval = dwc2_core_init(hsotg, true, irq); 3047197ba5f4SPaul Zimmerman if (retval) 3048197ba5f4SPaul Zimmerman goto error2; 3049197ba5f4SPaul Zimmerman 3050197ba5f4SPaul Zimmerman /* Create new workqueue and init work */ 3051197ba5f4SPaul Zimmerman retval = -ENOMEM; 3052197ba5f4SPaul Zimmerman hsotg->wq_otg = create_singlethread_workqueue("dwc2"); 3053197ba5f4SPaul Zimmerman if (!hsotg->wq_otg) { 3054197ba5f4SPaul Zimmerman dev_err(hsotg->dev, "Failed to create workqueue\n"); 3055197ba5f4SPaul Zimmerman goto error2; 3056197ba5f4SPaul Zimmerman } 3057197ba5f4SPaul Zimmerman INIT_WORK(&hsotg->wf_otg, dwc2_conn_id_status_change); 3058197ba5f4SPaul Zimmerman 3059197ba5f4SPaul Zimmerman setup_timer(&hsotg->wkp_timer, dwc2_wakeup_detected, 3060197ba5f4SPaul Zimmerman (unsigned long)hsotg); 3061197ba5f4SPaul Zimmerman 3062197ba5f4SPaul Zimmerman /* Initialize the non-periodic schedule */ 3063197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->non_periodic_sched_inactive); 3064197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->non_periodic_sched_active); 3065197ba5f4SPaul Zimmerman 3066197ba5f4SPaul Zimmerman /* Initialize the periodic schedule */ 3067197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->periodic_sched_inactive); 3068197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->periodic_sched_ready); 3069197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->periodic_sched_assigned); 3070197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->periodic_sched_queued); 3071197ba5f4SPaul Zimmerman 3072197ba5f4SPaul Zimmerman /* 3073197ba5f4SPaul Zimmerman * Create a host channel descriptor for each host channel implemented 3074197ba5f4SPaul Zimmerman * in the controller. Initialize the channel descriptor array. 3075197ba5f4SPaul Zimmerman */ 3076197ba5f4SPaul Zimmerman INIT_LIST_HEAD(&hsotg->free_hc_list); 3077197ba5f4SPaul Zimmerman num_channels = hsotg->core_params->host_channels; 3078197ba5f4SPaul Zimmerman memset(&hsotg->hc_ptr_array[0], 0, sizeof(hsotg->hc_ptr_array)); 3079197ba5f4SPaul Zimmerman 3080197ba5f4SPaul Zimmerman for (i = 0; i < num_channels; i++) { 3081197ba5f4SPaul Zimmerman channel = kzalloc(sizeof(*channel), GFP_KERNEL); 3082197ba5f4SPaul Zimmerman if (channel == NULL) 3083197ba5f4SPaul Zimmerman goto error3; 3084197ba5f4SPaul Zimmerman channel->hc_num = i; 3085197ba5f4SPaul Zimmerman hsotg->hc_ptr_array[i] = channel; 3086197ba5f4SPaul Zimmerman } 3087197ba5f4SPaul Zimmerman 3088197ba5f4SPaul Zimmerman if (hsotg->core_params->uframe_sched > 0) 3089197ba5f4SPaul Zimmerman dwc2_hcd_init_usecs(hsotg); 3090197ba5f4SPaul Zimmerman 3091197ba5f4SPaul Zimmerman /* Initialize hsotg start work */ 3092197ba5f4SPaul Zimmerman INIT_DELAYED_WORK(&hsotg->start_work, dwc2_hcd_start_func); 3093197ba5f4SPaul Zimmerman 3094197ba5f4SPaul Zimmerman /* Initialize port reset work */ 3095197ba5f4SPaul Zimmerman INIT_DELAYED_WORK(&hsotg->reset_work, dwc2_hcd_reset_func); 3096197ba5f4SPaul Zimmerman 3097197ba5f4SPaul Zimmerman /* 3098197ba5f4SPaul Zimmerman * Allocate space for storing data on status transactions. Normally no 3099197ba5f4SPaul Zimmerman * data is sent, but this space acts as a bit bucket. This must be 3100197ba5f4SPaul Zimmerman * done after usb_add_hcd since that function allocates the DMA buffer 3101197ba5f4SPaul Zimmerman * pool. 3102197ba5f4SPaul Zimmerman */ 3103197ba5f4SPaul Zimmerman if (hsotg->core_params->dma_enable > 0) 3104197ba5f4SPaul Zimmerman hsotg->status_buf = dma_alloc_coherent(hsotg->dev, 3105197ba5f4SPaul Zimmerman DWC2_HCD_STATUS_BUF_SIZE, 3106197ba5f4SPaul Zimmerman &hsotg->status_buf_dma, GFP_KERNEL); 3107197ba5f4SPaul Zimmerman else 3108197ba5f4SPaul Zimmerman hsotg->status_buf = kzalloc(DWC2_HCD_STATUS_BUF_SIZE, 3109197ba5f4SPaul Zimmerman GFP_KERNEL); 3110197ba5f4SPaul Zimmerman 3111197ba5f4SPaul Zimmerman if (!hsotg->status_buf) 3112197ba5f4SPaul Zimmerman goto error3; 3113197ba5f4SPaul Zimmerman 3114197ba5f4SPaul Zimmerman hsotg->otg_port = 1; 3115197ba5f4SPaul Zimmerman hsotg->frame_list = NULL; 3116197ba5f4SPaul Zimmerman hsotg->frame_list_dma = 0; 3117197ba5f4SPaul Zimmerman hsotg->periodic_qh_count = 0; 3118197ba5f4SPaul Zimmerman 3119197ba5f4SPaul Zimmerman /* Initiate lx_state to L3 disconnected state */ 3120197ba5f4SPaul Zimmerman hsotg->lx_state = DWC2_L3; 3121197ba5f4SPaul Zimmerman 3122197ba5f4SPaul Zimmerman hcd->self.otg_port = hsotg->otg_port; 3123197ba5f4SPaul Zimmerman 3124197ba5f4SPaul Zimmerman /* Don't support SG list at this point */ 3125197ba5f4SPaul Zimmerman hcd->self.sg_tablesize = 0; 3126197ba5f4SPaul Zimmerman 31279df4ceacSMian Yousaf Kaukab if (!IS_ERR_OR_NULL(hsotg->uphy)) 31289df4ceacSMian Yousaf Kaukab otg_set_host(hsotg->uphy->otg, &hcd->self); 31299df4ceacSMian Yousaf Kaukab 3130197ba5f4SPaul Zimmerman /* 3131197ba5f4SPaul Zimmerman * Finish generic HCD initialization and start the HCD. This function 3132197ba5f4SPaul Zimmerman * allocates the DMA buffer pool, registers the USB bus, requests the 3133197ba5f4SPaul Zimmerman * IRQ line, and calls hcd_start method. 3134197ba5f4SPaul Zimmerman */ 3135197ba5f4SPaul Zimmerman retval = usb_add_hcd(hcd, irq, IRQF_SHARED); 3136197ba5f4SPaul Zimmerman if (retval < 0) 3137197ba5f4SPaul Zimmerman goto error3; 3138197ba5f4SPaul Zimmerman 3139ec513b16SLinus Torvalds device_wakeup_enable(hcd->self.controller); 3140ec513b16SLinus Torvalds 3141197ba5f4SPaul Zimmerman dwc2_hcd_dump_state(hsotg); 3142197ba5f4SPaul Zimmerman 3143197ba5f4SPaul Zimmerman dwc2_enable_global_interrupts(hsotg); 3144197ba5f4SPaul Zimmerman 3145197ba5f4SPaul Zimmerman return 0; 3146197ba5f4SPaul Zimmerman 3147197ba5f4SPaul Zimmerman error3: 3148197ba5f4SPaul Zimmerman dwc2_hcd_release(hsotg); 3149197ba5f4SPaul Zimmerman error2: 3150197ba5f4SPaul Zimmerman usb_put_hcd(hcd); 3151197ba5f4SPaul Zimmerman error1: 3152197ba5f4SPaul Zimmerman kfree(hsotg->core_params); 3153197ba5f4SPaul Zimmerman 3154197ba5f4SPaul Zimmerman #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS 3155197ba5f4SPaul Zimmerman kfree(hsotg->last_frame_num_array); 3156197ba5f4SPaul Zimmerman kfree(hsotg->frame_num_array); 3157197ba5f4SPaul Zimmerman #endif 3158197ba5f4SPaul Zimmerman 3159197ba5f4SPaul Zimmerman dev_err(hsotg->dev, "%s() FAILED, returning %d\n", __func__, retval); 3160197ba5f4SPaul Zimmerman return retval; 3161197ba5f4SPaul Zimmerman } 3162197ba5f4SPaul Zimmerman 3163197ba5f4SPaul Zimmerman /* 3164197ba5f4SPaul Zimmerman * Removes the HCD. 3165197ba5f4SPaul Zimmerman * Frees memory and resources associated with the HCD and deregisters the bus. 3166197ba5f4SPaul Zimmerman */ 3167197ba5f4SPaul Zimmerman void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) 3168197ba5f4SPaul Zimmerman { 3169197ba5f4SPaul Zimmerman struct usb_hcd *hcd; 3170197ba5f4SPaul Zimmerman 3171197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "DWC OTG HCD REMOVE\n"); 3172197ba5f4SPaul Zimmerman 3173197ba5f4SPaul Zimmerman hcd = dwc2_hsotg_to_hcd(hsotg); 3174197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "hsotg->hcd = %p\n", hcd); 3175197ba5f4SPaul Zimmerman 3176197ba5f4SPaul Zimmerman if (!hcd) { 3177197ba5f4SPaul Zimmerman dev_dbg(hsotg->dev, "%s: dwc2_hsotg_to_hcd(hsotg) NULL!\n", 3178197ba5f4SPaul Zimmerman __func__); 3179197ba5f4SPaul Zimmerman return; 3180197ba5f4SPaul Zimmerman } 3181197ba5f4SPaul Zimmerman 31829df4ceacSMian Yousaf Kaukab if (!IS_ERR_OR_NULL(hsotg->uphy)) 31839df4ceacSMian Yousaf Kaukab otg_set_host(hsotg->uphy->otg, NULL); 31849df4ceacSMian Yousaf Kaukab 3185197ba5f4SPaul Zimmerman usb_remove_hcd(hcd); 3186197ba5f4SPaul Zimmerman hsotg->priv = NULL; 3187197ba5f4SPaul Zimmerman dwc2_hcd_release(hsotg); 3188197ba5f4SPaul Zimmerman usb_put_hcd(hcd); 3189197ba5f4SPaul Zimmerman 3190197ba5f4SPaul Zimmerman #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS 3191197ba5f4SPaul Zimmerman kfree(hsotg->last_frame_num_array); 3192197ba5f4SPaul Zimmerman kfree(hsotg->frame_num_array); 3193197ba5f4SPaul Zimmerman #endif 3194197ba5f4SPaul Zimmerman } 3195