1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 27 /* 28 * hci1394_detach.c 29 * HBA detach() routine with associated funtions. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/kmem.h> 34 #include <sys/conf.h> 35 #include <sys/ddi.h> 36 #include <sys/modctl.h> 37 #include <sys/stat.h> 38 #include <sys/sunddi.h> 39 40 #include <sys/1394/h1394.h> 41 #include <sys/1394/adapters/hci1394.h> 42 #include <sys/1394/adapters/hci1394_extern.h> 43 44 45 46 int 47 hci1394_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 48 { 49 hci1394_state_t *soft_state; 50 51 52 TNF_PROBE_0_DEBUG(hci1394_detach_enter, HCI1394_TNF_HAL_STACK, ""); 53 54 soft_state = ddi_get_soft_state(hci1394_statep, ddi_get_instance(dip)); 55 if (soft_state == NULL) { 56 TNF_PROBE_1(hci1394_detach_ssn_fail, HCI1394_TNF_HAL_ERROR, "", 57 tnf_string, errmsg, "soft_state = NULL"); 58 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, 59 ""); 60 return (DDI_FAILURE); 61 } 62 63 switch (cmd) { 64 case DDI_DETACH: 65 /* Don't allow the HW to generate any more interrupts */ 66 hci1394_ohci_intr_master_disable(soft_state->ohci); 67 hci1394_ohci_it_intr_disable(soft_state->ohci, 0xFFFFFFFF); 68 hci1394_ohci_ir_intr_disable(soft_state->ohci, 0xFFFFFFFF); 69 70 /* Clear any pending interrupts - no longer valid */ 71 hci1394_ohci_intr_clear(soft_state->ohci, 0xFFFFFFFF); 72 hci1394_ohci_it_intr_clear(soft_state->ohci, 0xFFFFFFFF); 73 hci1394_ohci_ir_intr_clear(soft_state->ohci, 0xFFFFFFFF); 74 75 /* Make sure we tell others on the bus we are dropping out */ 76 (void) hci1394_ohci_phy_clr(soft_state->ohci, 4, 0xc0); 77 ddi_put32(soft_state->ohci->ohci_reg_handle, 78 &soft_state->ohci->ohci_regs->link_ctrl_clr, 79 0xFFFFFFFF); 80 81 /* unregister interrupt handler */ 82 hci1394_isr_handler_fini(soft_state); 83 84 /* don't accept anymore commands from services layer */ 85 (void) hci1394_state_set(&soft_state->drvinfo, 86 HCI1394_SHUTDOWN); 87 88 /* Do a long reset on the bus so every one knows we are gone */ 89 (void) hci1394_ohci_bus_reset_nroot(soft_state->ohci); 90 91 /* Reset the OHCI HW */ 92 (void) hci1394_ohci_soft_reset(soft_state->ohci); 93 94 /* Flush out async DMA Q's (cancels pendingQ timeouts too) */ 95 hci1394_async_flush(soft_state->async); 96 97 (void) h1394_detach(&soft_state->drvinfo.di_sl_private, 98 DDI_DETACH); 99 100 /* remove the minor node */ 101 ddi_remove_minor_node(dip, "devctl"); 102 103 /* cleanup */ 104 hci1394_detach_hardware(soft_state); 105 106 /* cleanup Solaris interrupt stuff */ 107 hci1394_isr_fini(soft_state); 108 109 /* cleanup soft state stuff */ 110 hci1394_soft_state_fini(soft_state); 111 112 /* free soft state */ 113 ddi_soft_state_free(hci1394_statep, 114 soft_state->drvinfo.di_instance); 115 116 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, 117 ""); 118 return (DDI_SUCCESS); 119 120 case DDI_SUSPEND: 121 /* Don't allow the HW to generate any more interrupts */ 122 hci1394_ohci_intr_master_disable(soft_state->ohci); 123 hci1394_ohci_it_intr_disable(soft_state->ohci, 0xFFFFFFFF); 124 hci1394_ohci_ir_intr_disable(soft_state->ohci, 0xFFFFFFFF); 125 126 /* Clear any pending interrupts - no longer valid */ 127 hci1394_ohci_intr_clear(soft_state->ohci, 0xFFFFFFFF); 128 hci1394_ohci_it_intr_clear(soft_state->ohci, 0xFFFFFFFF); 129 hci1394_ohci_ir_intr_clear(soft_state->ohci, 0xFFFFFFFF); 130 131 /* Make sure we tell others on the bus we are dropping out */ 132 (void) hci1394_ohci_phy_clr(soft_state->ohci, 4, 0xc0); 133 ddi_put32(soft_state->ohci->ohci_reg_handle, 134 &soft_state->ohci->ohci_regs->link_ctrl_clr, 135 0xFFFFFFFF); 136 137 /* don't accept anymore commands from services layer */ 138 (void) hci1394_state_set(&soft_state->drvinfo, 139 HCI1394_SHUTDOWN); 140 141 /* Do a long reset on the bus so every one knows we are gone */ 142 (void) hci1394_ohci_bus_reset_nroot(soft_state->ohci); 143 144 /* Reset the OHCI HW */ 145 (void) hci1394_ohci_soft_reset(soft_state->ohci); 146 147 /* Make sure async engine is ready to suspend */ 148 hci1394_async_suspend(soft_state->async); 149 150 (void) h1394_detach(&soft_state->drvinfo.di_sl_private, 151 DDI_SUSPEND); 152 153 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, 154 ""); 155 return (DDI_SUCCESS); 156 157 default: 158 TNF_PROBE_1(hci1394_detach_fail, HCI1394_TNF_HAL_ERROR, "", 159 tnf_string, errmsg, "in detach default"); 160 break; 161 } 162 163 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, ""); 164 165 return (DDI_FAILURE); 166 } 167 168 /* 169 * quiesce(9E) entry point. 170 * 171 * This function is called when the system is single-threaded at high 172 * PIL with preemption disabled. Therefore, this function must not be 173 * blocked. 174 * 175 * This function returns DDI_SUCCESS on success, or DDI_FAILURE on failure. 176 * DDI_FAILURE indicates an error condition and should almost never happen. 177 */ 178 int 179 hci1394_quiesce(dev_info_t *dip) 180 { 181 hci1394_state_t *soft_state; 182 183 soft_state = ddi_get_soft_state(hci1394_statep, ddi_get_instance(dip)); 184 185 if (soft_state == NULL) { 186 return (DDI_FAILURE); 187 } 188 189 /* Don't allow the HW to generate any more interrupts */ 190 hci1394_ohci_intr_master_disable(soft_state->ohci); 191 hci1394_ohci_it_intr_disable(soft_state->ohci, 0xFFFFFFFF); 192 hci1394_ohci_ir_intr_disable(soft_state->ohci, 0xFFFFFFFF); 193 194 /* Clear any pending interrupts - no longer valid */ 195 hci1394_ohci_intr_clear(soft_state->ohci, 0xFFFFFFFF); 196 hci1394_ohci_it_intr_clear(soft_state->ohci, 0xFFFFFFFF); 197 hci1394_ohci_ir_intr_clear(soft_state->ohci, 0xFFFFFFFF); 198 199 /* Make sure we tell others on the bus we are dropping out */ 200 (void) hci1394_ohci_phy_clr(soft_state->ohci, 4, 0xc0); 201 ddi_put32(soft_state->ohci->ohci_reg_handle, 202 &soft_state->ohci->ohci_regs->link_ctrl_clr, 0xFFFFFFFF); 203 204 /* Do a long reset on the bus so every one knows we are gone */ 205 (void) hci1394_ohci_bus_reset_nroot(soft_state->ohci); 206 207 /* Reset the OHCI HW */ 208 (void) hci1394_ohci_soft_reset(soft_state->ohci); 209 210 return (DDI_SUCCESS); 211 } 212 213 void 214 hci1394_detach_hardware(hci1394_state_t *soft_state) 215 { 216 ASSERT(soft_state != NULL); 217 TNF_PROBE_0_DEBUG(hci1394_detach_hardware_enter, HCI1394_TNF_HAL_STACK, 218 ""); 219 220 /* free up vendor specific registers */ 221 hci1394_vendor_fini(&soft_state->vendor); 222 223 /* cleanup isoch layer */ 224 hci1394_isoch_fini(&soft_state->isoch); 225 226 /* cleanup async layer */ 227 hci1394_async_fini(&soft_state->async); 228 229 /* Free up csr register space */ 230 hci1394_csr_fini(&soft_state->csr); 231 232 /* free up OpenHCI registers */ 233 hci1394_ohci_fini(&soft_state->ohci); 234 235 /* free up PCI config space */ 236 hci1394_pci_fini(soft_state); 237 238 TNF_PROBE_0_DEBUG(hci1394_detach_hardware_exit, HCI1394_TNF_HAL_STACK, 239 ""); 240 } 241 242 243 /* 244 * hci1394_pci_fini() 245 * Cleanup after a PCI init. 246 */ 247 void 248 hci1394_pci_fini(hci1394_state_t *soft_state) 249 { 250 ASSERT(soft_state != NULL); 251 TNF_PROBE_0_DEBUG(hci1394_pci_fini_enter, HCI1394_TNF_HAL_STACK, ""); 252 pci_config_teardown(&soft_state->pci_config); 253 TNF_PROBE_0_DEBUG(hci1394_pci_fini_exit, HCI1394_TNF_HAL_STACK, ""); 254 } 255 256 257 /* 258 * hci1394_soft_state_fini() 259 * Cleanup any mutex's, etc. in soft_state. 260 */ 261 void 262 hci1394_soft_state_fini(hci1394_state_t *soft_state) 263 { 264 ASSERT(soft_state != NULL); 265 TNF_PROBE_0_DEBUG(hci1394_soft_state_fini_enter, HCI1394_TNF_HAL_STACK, 266 ""); 267 mutex_destroy(&soft_state->drvinfo.di_drvstate.ds_mutex); 268 TNF_PROBE_0_DEBUG(hci1394_soft_state_fini_exit, HCI1394_TNF_HAL_STACK, 269 ""); 270 } 271