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 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * hci1394_detach.c 30 * HBA detach() routine with associated funtions. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/kmem.h> 35 #include <sys/conf.h> 36 #include <sys/ddi.h> 37 #include <sys/modctl.h> 38 #include <sys/stat.h> 39 #include <sys/sunddi.h> 40 41 #include <sys/1394/h1394.h> 42 #include <sys/1394/adapters/hci1394.h> 43 #include <sys/1394/adapters/hci1394_extern.h> 44 45 46 47 int 48 hci1394_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 49 { 50 hci1394_state_t *soft_state; 51 52 53 TNF_PROBE_0_DEBUG(hci1394_detach_enter, HCI1394_TNF_HAL_STACK, ""); 54 55 soft_state = ddi_get_soft_state(hci1394_statep, ddi_get_instance(dip)); 56 if (soft_state == NULL) { 57 TNF_PROBE_1(hci1394_detach_ssn_fail, HCI1394_TNF_HAL_ERROR, "", 58 tnf_string, errmsg, "soft_state = NULL"); 59 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, 60 ""); 61 return (DDI_FAILURE); 62 } 63 64 switch (cmd) { 65 case DDI_DETACH: 66 /* Don't allow the HW to generate any more interrupts */ 67 hci1394_ohci_intr_master_disable(soft_state->ohci); 68 hci1394_ohci_it_intr_disable(soft_state->ohci, 0xFFFFFFFF); 69 hci1394_ohci_ir_intr_disable(soft_state->ohci, 0xFFFFFFFF); 70 71 /* Clear any pending interrupts - no longer valid */ 72 hci1394_ohci_intr_clear(soft_state->ohci, 0xFFFFFFFF); 73 hci1394_ohci_it_intr_clear(soft_state->ohci, 0xFFFFFFFF); 74 hci1394_ohci_ir_intr_clear(soft_state->ohci, 0xFFFFFFFF); 75 76 /* Make sure we tell others on the bus we are dropping out */ 77 (void) hci1394_ohci_phy_clr(soft_state->ohci, 4, 0xc0); 78 ddi_put32(soft_state->ohci->ohci_reg_handle, 79 &soft_state->ohci->ohci_regs->link_ctrl_clr, 80 0xFFFFFFFF); 81 82 /* unregister interrupt handler */ 83 hci1394_isr_handler_fini(soft_state); 84 85 /* don't accept anymore commands from services layer */ 86 (void) hci1394_state_set(&soft_state->drvinfo, 87 HCI1394_SHUTDOWN); 88 89 /* Do a long reset on the bus so every one knows we are gone */ 90 (void) hci1394_ohci_bus_reset_nroot(soft_state->ohci); 91 92 /* Reset the OHCI HW */ 93 (void) hci1394_ohci_soft_reset(soft_state->ohci); 94 95 /* Flush out async DMA Q's (cancels pendingQ timeouts too) */ 96 hci1394_async_flush(soft_state->async); 97 98 (void) h1394_detach(&soft_state->drvinfo.di_sl_private, 99 DDI_DETACH); 100 101 /* remove the minor node */ 102 ddi_remove_minor_node(dip, "devctl"); 103 104 /* cleanup */ 105 hci1394_detach_hardware(soft_state); 106 107 /* cleanup Solaris interrupt stuff */ 108 hci1394_isr_fini(soft_state); 109 110 /* cleanup soft state stuff */ 111 hci1394_soft_state_fini(soft_state); 112 113 /* free soft state */ 114 ddi_soft_state_free(hci1394_statep, 115 soft_state->drvinfo.di_instance); 116 117 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, 118 ""); 119 return (DDI_SUCCESS); 120 121 case DDI_SUSPEND: 122 /* Don't allow the HW to generate any more interrupts */ 123 hci1394_ohci_intr_master_disable(soft_state->ohci); 124 hci1394_ohci_it_intr_disable(soft_state->ohci, 0xFFFFFFFF); 125 hci1394_ohci_ir_intr_disable(soft_state->ohci, 0xFFFFFFFF); 126 127 /* Clear any pending interrupts - no longer valid */ 128 hci1394_ohci_intr_clear(soft_state->ohci, 0xFFFFFFFF); 129 hci1394_ohci_it_intr_clear(soft_state->ohci, 0xFFFFFFFF); 130 hci1394_ohci_ir_intr_clear(soft_state->ohci, 0xFFFFFFFF); 131 132 /* Make sure we tell others on the bus we are dropping out */ 133 (void) hci1394_ohci_phy_clr(soft_state->ohci, 4, 0xc0); 134 ddi_put32(soft_state->ohci->ohci_reg_handle, 135 &soft_state->ohci->ohci_regs->link_ctrl_clr, 136 0xFFFFFFFF); 137 138 /* don't accept anymore commands from services layer */ 139 (void) hci1394_state_set(&soft_state->drvinfo, 140 HCI1394_SHUTDOWN); 141 142 /* Do a long reset on the bus so every one knows we are gone */ 143 (void) hci1394_ohci_bus_reset_nroot(soft_state->ohci); 144 145 /* Reset the OHCI HW */ 146 (void) hci1394_ohci_soft_reset(soft_state->ohci); 147 148 /* Make sure async engine is ready to suspend */ 149 hci1394_async_suspend(soft_state->async); 150 151 (void) h1394_detach(&soft_state->drvinfo.di_sl_private, 152 DDI_SUSPEND); 153 154 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, 155 ""); 156 return (DDI_SUCCESS); 157 158 default: 159 TNF_PROBE_1(hci1394_detach_fail, HCI1394_TNF_HAL_ERROR, "", 160 tnf_string, errmsg, "in detach default"); 161 break; 162 } 163 164 TNF_PROBE_0_DEBUG(hci1394_detach_exit, HCI1394_TNF_HAL_STACK, ""); 165 166 return (DDI_FAILURE); 167 } 168 169 170 void 171 hci1394_detach_hardware(hci1394_state_t *soft_state) 172 { 173 ASSERT(soft_state != NULL); 174 TNF_PROBE_0_DEBUG(hci1394_detach_hardware_enter, HCI1394_TNF_HAL_STACK, 175 ""); 176 177 /* free up vendor specific registers */ 178 hci1394_vendor_fini(&soft_state->vendor); 179 180 /* cleanup isoch layer */ 181 hci1394_isoch_fini(&soft_state->isoch); 182 183 /* cleanup async layer */ 184 hci1394_async_fini(&soft_state->async); 185 186 /* Free up csr register space */ 187 hci1394_csr_fini(&soft_state->csr); 188 189 /* free up OpenHCI registers */ 190 hci1394_ohci_fini(&soft_state->ohci); 191 192 /* free up PCI config space */ 193 hci1394_pci_fini(soft_state); 194 195 TNF_PROBE_0_DEBUG(hci1394_detach_hardware_exit, HCI1394_TNF_HAL_STACK, 196 ""); 197 } 198 199 200 /* 201 * hci1394_pci_fini() 202 * Cleanup after a PCI init. 203 */ 204 void 205 hci1394_pci_fini(hci1394_state_t *soft_state) 206 { 207 ASSERT(soft_state != NULL); 208 TNF_PROBE_0_DEBUG(hci1394_pci_fini_enter, HCI1394_TNF_HAL_STACK, ""); 209 pci_config_teardown(&soft_state->pci_config); 210 TNF_PROBE_0_DEBUG(hci1394_pci_fini_exit, HCI1394_TNF_HAL_STACK, ""); 211 } 212 213 214 /* 215 * hci1394_soft_state_fini() 216 * Cleanup any mutex's, etc. in soft_state. 217 */ 218 void 219 hci1394_soft_state_fini(hci1394_state_t *soft_state) 220 { 221 ASSERT(soft_state != NULL); 222 TNF_PROBE_0_DEBUG(hci1394_soft_state_fini_enter, HCI1394_TNF_HAL_STACK, 223 ""); 224 mutex_destroy(&soft_state->drvinfo.di_drvstate.ds_mutex); 225 TNF_PROBE_0_DEBUG(hci1394_soft_state_fini_exit, HCI1394_TNF_HAL_STACK, 226 ""); 227 } 228