Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is provided under a dual BSD/GPLv2 license. When using or |
| 3 | * redistributing this file, you may do so under either license. |
| 4 | * |
| 5 | * GPL LICENSE SUMMARY |
| 6 | * |
| 7 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of version 2 of the GNU General Public License as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | * The full GNU General Public License is included in this distribution |
| 22 | * in the file called LICENSE.GPL. |
| 23 | * |
| 24 | * BSD LICENSE |
| 25 | * |
| 26 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| 27 | * All rights reserved. |
| 28 | * |
| 29 | * Redistribution and use in source and binary forms, with or without |
| 30 | * modification, are permitted provided that the following conditions |
| 31 | * are met: |
| 32 | * |
| 33 | * * Redistributions of source code must retain the above copyright |
| 34 | * notice, this list of conditions and the following disclaimer. |
| 35 | * * Redistributions in binary form must reproduce the above copyright |
| 36 | * notice, this list of conditions and the following disclaimer in |
| 37 | * the documentation and/or other materials provided with the |
| 38 | * distribution. |
| 39 | * * Neither the name of Intel Corporation nor the names of its |
| 40 | * contributors may be used to endorse or promote products derived |
| 41 | * from this software without specific prior written permission. |
| 42 | * |
| 43 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 44 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 45 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 46 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 47 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 48 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 49 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 50 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 51 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 52 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 53 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 54 | */ |
| 55 | |
| 56 | #include <linux/kernel.h> |
| 57 | #include <linux/init.h> |
| 58 | #include <linux/module.h> |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 59 | #include <linux/firmware.h> |
| 60 | #include <linux/efi.h> |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 61 | #include <asm/string.h> |
| 62 | #include "isci.h" |
| 63 | #include "task.h" |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 64 | #include "probe_roms.h" |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 65 | |
| 66 | static struct scsi_transport_template *isci_transport_template; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 67 | |
| 68 | static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = { |
| 69 | { PCI_VDEVICE(INTEL, 0x1D61),}, |
| 70 | { PCI_VDEVICE(INTEL, 0x1D63),}, |
| 71 | { PCI_VDEVICE(INTEL, 0x1D65),}, |
| 72 | { PCI_VDEVICE(INTEL, 0x1D67),}, |
| 73 | { PCI_VDEVICE(INTEL, 0x1D69),}, |
| 74 | { PCI_VDEVICE(INTEL, 0x1D6B),}, |
| 75 | { PCI_VDEVICE(INTEL, 0x1D60),}, |
| 76 | { PCI_VDEVICE(INTEL, 0x1D62),}, |
| 77 | { PCI_VDEVICE(INTEL, 0x1D64),}, |
| 78 | { PCI_VDEVICE(INTEL, 0x1D66),}, |
| 79 | { PCI_VDEVICE(INTEL, 0x1D68),}, |
| 80 | { PCI_VDEVICE(INTEL, 0x1D6A),}, |
| 81 | {} |
| 82 | }; |
| 83 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 84 | MODULE_DEVICE_TABLE(pci, isci_id_table); |
| 85 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 86 | /* linux isci specific settings */ |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 87 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 88 | int isci_si_rev = ISCI_SI_REVA2; |
Dave Jiang | b5f18a2 | 2011-03-16 14:57:23 -0700 | [diff] [blame] | 89 | module_param(isci_si_rev, int, 0); |
Dan Williams | c6d4225 | 2011-05-04 13:49:32 -0700 | [diff] [blame] | 90 | MODULE_PARM_DESC(isci_si_rev, "(deprecated) override default si rev (0: A0 1: A2 2: B0)"); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 91 | |
Dave Jiang | b5f18a2 | 2011-03-16 14:57:23 -0700 | [diff] [blame] | 92 | unsigned char no_outbound_task_to = 20; |
| 93 | module_param(no_outbound_task_to, byte, 0); |
| 94 | MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); |
| 95 | |
| 96 | u16 ssp_max_occ_to = 20; |
| 97 | module_param(ssp_max_occ_to, ushort, 0); |
| 98 | MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)"); |
| 99 | |
| 100 | u16 stp_max_occ_to = 5; |
| 101 | module_param(stp_max_occ_to, ushort, 0); |
| 102 | MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)"); |
| 103 | |
| 104 | u16 ssp_inactive_to = 5; |
| 105 | module_param(ssp_inactive_to, ushort, 0); |
| 106 | MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)"); |
| 107 | |
| 108 | u16 stp_inactive_to = 5; |
| 109 | module_param(stp_inactive_to, ushort, 0); |
| 110 | MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); |
| 111 | |
| 112 | unsigned char phy_gen = 3; |
| 113 | module_param(phy_gen, byte, 0); |
| 114 | MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); |
| 115 | |
| 116 | unsigned char max_concurr_spinup = 1; |
| 117 | module_param(max_concurr_spinup, byte, 0); |
| 118 | MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); |
| 119 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 120 | static struct scsi_host_template isci_sht = { |
| 121 | |
| 122 | .module = THIS_MODULE, |
| 123 | .name = DRV_NAME, |
Havard Skinnemoen | 92cd511 | 2011-02-18 18:32:08 -0800 | [diff] [blame] | 124 | .proc_name = DRV_NAME, |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 125 | .queuecommand = sas_queuecommand, |
| 126 | .target_alloc = sas_target_alloc, |
| 127 | .slave_configure = sas_slave_configure, |
| 128 | .slave_destroy = sas_slave_destroy, |
| 129 | .scan_finished = isci_host_scan_finished, |
| 130 | .scan_start = isci_host_scan_start, |
| 131 | .change_queue_depth = sas_change_queue_depth, |
| 132 | .change_queue_type = sas_change_queue_type, |
| 133 | .bios_param = sas_bios_param, |
| 134 | .can_queue = ISCI_CAN_QUEUE_VAL, |
| 135 | .cmd_per_lun = 1, |
| 136 | .this_id = -1, |
| 137 | .sg_tablesize = SG_ALL, |
| 138 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, |
| 139 | .use_clustering = ENABLE_CLUSTERING, |
| 140 | .eh_device_reset_handler = sas_eh_device_reset_handler, |
| 141 | .eh_bus_reset_handler = isci_bus_reset_handler, |
| 142 | .slave_alloc = sas_slave_alloc, |
| 143 | .target_destroy = sas_target_destroy, |
| 144 | .ioctl = sas_ioctl, |
| 145 | }; |
| 146 | |
| 147 | static struct sas_domain_function_template isci_transport_ops = { |
| 148 | |
| 149 | /* The class calls these to notify the LLDD of an event. */ |
| 150 | .lldd_port_formed = isci_port_formed, |
| 151 | .lldd_port_deformed = isci_port_deformed, |
| 152 | |
| 153 | /* The class calls these when a device is found or gone. */ |
| 154 | .lldd_dev_found = isci_remote_device_found, |
| 155 | .lldd_dev_gone = isci_remote_device_gone, |
| 156 | |
| 157 | .lldd_execute_task = isci_task_execute_task, |
| 158 | /* Task Management Functions. Must be called from process context. */ |
| 159 | .lldd_abort_task = isci_task_abort_task, |
| 160 | .lldd_abort_task_set = isci_task_abort_task_set, |
| 161 | .lldd_clear_aca = isci_task_clear_aca, |
| 162 | .lldd_clear_task_set = isci_task_clear_task_set, |
| 163 | .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, |
| 164 | .lldd_lu_reset = isci_task_lu_reset, |
| 165 | .lldd_query_task = isci_task_query_task, |
| 166 | |
| 167 | /* Port and Adapter management */ |
| 168 | .lldd_clear_nexus_port = isci_task_clear_nexus_port, |
| 169 | .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, |
| 170 | |
| 171 | /* Phy management */ |
| 172 | .lldd_control_phy = isci_phy_control, |
| 173 | }; |
| 174 | |
| 175 | |
| 176 | /****************************************************************************** |
| 177 | * P R O T E C T E D M E T H O D S |
| 178 | ******************************************************************************/ |
| 179 | |
| 180 | |
| 181 | |
| 182 | /** |
| 183 | * isci_register_sas_ha() - This method initializes various lldd |
| 184 | * specific members of the sas_ha struct and calls the libsas |
| 185 | * sas_register_ha() function. |
| 186 | * @isci_host: This parameter specifies the lldd specific wrapper for the |
| 187 | * libsas sas_ha struct. |
| 188 | * |
| 189 | * This method returns an error code indicating sucess or failure. The user |
| 190 | * should check for possible memory allocation error return otherwise, a zero |
| 191 | * indicates success. |
| 192 | */ |
| 193 | static int isci_register_sas_ha(struct isci_host *isci_host) |
| 194 | { |
| 195 | int i; |
| 196 | struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); |
| 197 | struct asd_sas_phy **sas_phys; |
| 198 | struct asd_sas_port **sas_ports; |
| 199 | |
| 200 | sas_phys = devm_kzalloc(&isci_host->pdev->dev, |
| 201 | SCI_MAX_PHYS * sizeof(void *), |
| 202 | GFP_KERNEL); |
| 203 | if (!sas_phys) |
| 204 | return -ENOMEM; |
| 205 | |
| 206 | sas_ports = devm_kzalloc(&isci_host->pdev->dev, |
| 207 | SCI_MAX_PORTS * sizeof(void *), |
| 208 | GFP_KERNEL); |
| 209 | if (!sas_ports) |
| 210 | return -ENOMEM; |
| 211 | |
| 212 | /*----------------- Libsas Initialization Stuff---------------------- |
| 213 | * Set various fields in the sas_ha struct: |
| 214 | */ |
| 215 | |
| 216 | sas_ha->sas_ha_name = DRV_NAME; |
| 217 | sas_ha->lldd_module = THIS_MODULE; |
Dan Williams | 150fc6f | 2011-02-25 10:25:21 -0800 | [diff] [blame] | 218 | sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 219 | |
| 220 | /* set the array of phy and port structs. */ |
| 221 | for (i = 0; i < SCI_MAX_PHYS; i++) { |
Dan Williams | e531381 | 2011-05-07 10:11:43 -0700 | [diff] [blame] | 222 | sas_phys[i] = &isci_host->phys[i].sas_phy; |
| 223 | sas_ports[i] = &isci_host->ports[i].sas_port; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | sas_ha->sas_phy = sas_phys; |
| 227 | sas_ha->sas_port = sas_ports; |
| 228 | sas_ha->num_phys = SCI_MAX_PHYS; |
| 229 | |
| 230 | sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL; |
| 231 | sas_ha->lldd_max_execute_num = 1; |
| 232 | sas_ha->strict_wide_ports = 1; |
| 233 | |
| 234 | sas_register_ha(sas_ha); |
| 235 | |
| 236 | return 0; |
| 237 | } |
| 238 | |
Dan Williams | 34cad85 | 2011-03-10 00:01:43 -0800 | [diff] [blame] | 239 | static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 240 | { |
Dan Williams | 34cad85 | 2011-03-10 00:01:43 -0800 | [diff] [blame] | 241 | struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); |
| 242 | struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); |
| 243 | struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha); |
| 244 | |
| 245 | return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id); |
| 246 | } |
| 247 | |
| 248 | static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL); |
| 249 | |
| 250 | static void isci_unregister(struct isci_host *isci_host) |
| 251 | { |
| 252 | struct Scsi_Host *shost; |
| 253 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 254 | if (!isci_host) |
| 255 | return; |
| 256 | |
Dan Williams | 34cad85 | 2011-03-10 00:01:43 -0800 | [diff] [blame] | 257 | shost = isci_host->shost; |
| 258 | device_remove_file(&shost->shost_dev, &dev_attr_isci_id); |
| 259 | |
| 260 | sas_unregister_ha(&isci_host->sas_ha); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 261 | |
| 262 | sas_remove_host(isci_host->shost); |
| 263 | scsi_remove_host(isci_host->shost); |
| 264 | scsi_host_put(isci_host->shost); |
| 265 | } |
| 266 | |
| 267 | static int __devinit isci_pci_init(struct pci_dev *pdev) |
| 268 | { |
Artur Wojcik | cc3dbd0 | 2011-05-04 07:58:16 +0000 | [diff] [blame] | 269 | int err, bar_num, bar_mask = 0; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 270 | void __iomem * const *iomap; |
| 271 | |
| 272 | err = pcim_enable_device(pdev); |
| 273 | if (err) { |
| 274 | dev_err(&pdev->dev, |
| 275 | "failed enable PCI device %s!\n", |
| 276 | pci_name(pdev)); |
| 277 | return err; |
| 278 | } |
| 279 | |
| 280 | for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) |
| 281 | bar_mask |= 1 << (bar_num * 2); |
| 282 | |
| 283 | err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); |
| 284 | if (err) |
| 285 | return err; |
| 286 | |
| 287 | iomap = pcim_iomap_table(pdev); |
| 288 | if (!iomap) |
| 289 | return -ENOMEM; |
| 290 | |
| 291 | pci_set_master(pdev); |
| 292 | |
| 293 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
| 294 | if (err) { |
| 295 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| 296 | if (err) |
| 297 | return err; |
| 298 | } |
| 299 | |
| 300 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
| 301 | if (err) { |
| 302 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| 303 | if (err) |
| 304 | return err; |
| 305 | } |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 310 | static int num_controllers(struct pci_dev *pdev) |
| 311 | { |
| 312 | /* bar size alone can tell us if we are running with a dual controller |
| 313 | * part, no need to trust revision ids that might be under broken firmware |
| 314 | * control |
| 315 | */ |
| 316 | resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); |
| 317 | resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); |
Dan Williams | f942f32 | 2011-03-26 16:30:06 -0700 | [diff] [blame] | 318 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 319 | if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && |
| 320 | smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) |
| 321 | return SCI_MAX_CONTROLLERS; |
| 322 | else |
| 323 | return 1; |
| 324 | } |
| 325 | |
| 326 | static int isci_setup_interrupts(struct pci_dev *pdev) |
| 327 | { |
| 328 | int err, i, num_msix; |
Dan Williams | 31e824e | 2011-04-19 12:32:51 -0700 | [diff] [blame] | 329 | struct isci_host *ihost; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 330 | struct isci_pci_info *pci_info = to_pci_info(pdev); |
| 331 | |
| 332 | /* |
| 333 | * Determine the number of vectors associated with this |
| 334 | * PCI function. |
| 335 | */ |
| 336 | num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; |
| 337 | |
| 338 | for (i = 0; i < num_msix; i++) |
| 339 | pci_info->msix_entries[i].entry = i; |
| 340 | |
| 341 | err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix); |
| 342 | if (err) |
| 343 | goto intx; |
| 344 | |
| 345 | for (i = 0; i < num_msix; i++) { |
| 346 | int id = i / SCI_NUM_MSI_X_INT; |
| 347 | struct msix_entry *msix = &pci_info->msix_entries[i]; |
Dan Williams | 92f4f0f | 2011-02-18 09:25:11 -0800 | [diff] [blame] | 348 | irq_handler_t isr; |
| 349 | |
Dan Williams | 31e824e | 2011-04-19 12:32:51 -0700 | [diff] [blame] | 350 | ihost = pci_info->hosts[id]; |
Dan Williams | 92f4f0f | 2011-02-18 09:25:11 -0800 | [diff] [blame] | 351 | /* odd numbered vectors are error interrupts */ |
| 352 | if (i & 1) |
| 353 | isr = isci_error_isr; |
| 354 | else |
| 355 | isr = isci_msix_isr; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 356 | |
Dan Williams | 92f4f0f | 2011-02-18 09:25:11 -0800 | [diff] [blame] | 357 | err = devm_request_irq(&pdev->dev, msix->vector, isr, 0, |
Dan Williams | 31e824e | 2011-04-19 12:32:51 -0700 | [diff] [blame] | 358 | DRV_NAME"-msix", ihost); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 359 | if (!err) |
| 360 | continue; |
| 361 | |
| 362 | dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); |
| 363 | while (i--) { |
| 364 | id = i / SCI_NUM_MSI_X_INT; |
Dan Williams | 31e824e | 2011-04-19 12:32:51 -0700 | [diff] [blame] | 365 | ihost = pci_info->hosts[id]; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 366 | msix = &pci_info->msix_entries[i]; |
Dan Williams | 31e824e | 2011-04-19 12:32:51 -0700 | [diff] [blame] | 367 | devm_free_irq(&pdev->dev, msix->vector, ihost); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 368 | } |
| 369 | pci_disable_msix(pdev); |
| 370 | goto intx; |
| 371 | } |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 372 | return 0; |
| 373 | |
| 374 | intx: |
Dan Williams | 31e824e | 2011-04-19 12:32:51 -0700 | [diff] [blame] | 375 | for_each_isci_host(i, ihost, pdev) { |
| 376 | err = devm_request_irq(&pdev->dev, pdev->irq, isci_intx_isr, |
| 377 | IRQF_SHARED, DRV_NAME"-intx", ihost); |
| 378 | if (err) |
| 379 | break; |
| 380 | } |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 381 | return err; |
| 382 | } |
| 383 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 384 | static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) |
| 385 | { |
| 386 | struct isci_host *isci_host; |
| 387 | struct Scsi_Host *shost; |
| 388 | int err; |
| 389 | |
Dan Williams | 57f20f4 | 2011-04-21 18:14:45 -0700 | [diff] [blame] | 390 | isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 391 | if (!isci_host) |
| 392 | return NULL; |
| 393 | |
| 394 | isci_host->pdev = pdev; |
| 395 | isci_host->id = id; |
| 396 | |
| 397 | shost = scsi_host_alloc(&isci_sht, sizeof(void *)); |
| 398 | if (!shost) |
| 399 | return NULL; |
| 400 | isci_host->shost = shost; |
| 401 | |
| 402 | err = isci_host_init(isci_host); |
| 403 | if (err) |
| 404 | goto err_shost; |
| 405 | |
| 406 | SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha; |
| 407 | isci_host->sas_ha.core.shost = shost; |
| 408 | shost->transportt = isci_transport_template; |
| 409 | |
| 410 | shost->max_id = ~0; |
| 411 | shost->max_lun = ~0; |
| 412 | shost->max_cmd_len = MAX_COMMAND_SIZE; |
| 413 | |
| 414 | err = scsi_add_host(shost, &pdev->dev); |
| 415 | if (err) |
| 416 | goto err_shost; |
| 417 | |
| 418 | err = isci_register_sas_ha(isci_host); |
| 419 | if (err) |
| 420 | goto err_shost_remove; |
| 421 | |
Dan Williams | 34cad85 | 2011-03-10 00:01:43 -0800 | [diff] [blame] | 422 | err = device_create_file(&shost->shost_dev, &dev_attr_isci_id); |
| 423 | if (err) |
| 424 | goto err_unregister_ha; |
| 425 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 426 | return isci_host; |
| 427 | |
Dan Williams | 34cad85 | 2011-03-10 00:01:43 -0800 | [diff] [blame] | 428 | err_unregister_ha: |
| 429 | sas_unregister_ha(&(isci_host->sas_ha)); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 430 | err_shost_remove: |
| 431 | scsi_remove_host(shost); |
| 432 | err_shost: |
| 433 | scsi_host_put(shost); |
| 434 | |
| 435 | return NULL; |
| 436 | } |
| 437 | |
| 438 | static void check_si_rev(struct pci_dev *pdev) |
| 439 | { |
Adam Gruchala | dbb0743 | 2011-06-01 22:31:03 +0000 | [diff] [blame] | 440 | switch (pdev->revision) { |
| 441 | case 0: |
| 442 | case 1: |
| 443 | /* if the id is ambiguous don't update isci_si_rev */ |
| 444 | break; |
| 445 | case 3: |
| 446 | isci_si_rev = ISCI_SI_REVA2; |
| 447 | break; |
| 448 | case 4: |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 449 | isci_si_rev = ISCI_SI_REVB0; |
Adam Gruchala | dbb0743 | 2011-06-01 22:31:03 +0000 | [diff] [blame] | 450 | break; |
| 451 | default: |
| 452 | case 5: |
| 453 | isci_si_rev = ISCI_SI_REVC0; |
| 454 | break; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | dev_info(&pdev->dev, "driver configured for %s silicon (rev: %d)\n", |
| 458 | isci_si_rev == ISCI_SI_REVA0 ? "A0" : |
Adam Gruchala | dbb0743 | 2011-06-01 22:31:03 +0000 | [diff] [blame] | 459 | isci_si_rev == ISCI_SI_REVA2 ? "A2" : |
| 460 | isci_si_rev == ISCI_SI_REVB0 ? "B0" : "C0", pdev->revision); |
Dan Williams | f942f32 | 2011-03-26 16:30:06 -0700 | [diff] [blame] | 461 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| 465 | { |
| 466 | struct isci_pci_info *pci_info; |
| 467 | int err, i; |
| 468 | struct isci_host *isci_host; |
Dave Jiang | 858d4aa | 2011-02-22 01:27:03 -0800 | [diff] [blame] | 469 | const struct firmware *fw = NULL; |
Dan Williams | d37ee7e | 2011-04-26 13:19:53 -0700 | [diff] [blame] | 470 | struct isci_orom *orom = NULL; |
Dan Williams | 4711ba1 | 2011-03-11 10:43:57 -0800 | [diff] [blame] | 471 | char *source = "(platform)"; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 472 | |
| 473 | check_si_rev(pdev); |
| 474 | |
| 475 | pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); |
| 476 | if (!pci_info) |
| 477 | return -ENOMEM; |
| 478 | pci_set_drvdata(pdev, pci_info); |
| 479 | |
Dave Jiang | 8db37aa | 2011-02-23 00:02:24 -0800 | [diff] [blame] | 480 | if (efi_enabled) |
| 481 | orom = isci_get_efi_var(pdev); |
Dan Williams | d37ee7e | 2011-04-26 13:19:53 -0700 | [diff] [blame] | 482 | |
| 483 | if (!orom) |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 484 | orom = isci_request_oprom(pdev); |
| 485 | |
Dan Williams | 2d70de5 | 2011-04-20 12:57:08 -0700 | [diff] [blame] | 486 | for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) { |
| 487 | if (scic_oem_parameters_validate(&orom->ctrl[i])) { |
| 488 | dev_warn(&pdev->dev, |
| 489 | "[%d]: invalid oem parameters detected, falling back to firmware\n", i); |
| 490 | devm_kfree(&pdev->dev, orom); |
| 491 | orom = NULL; |
| 492 | break; |
| 493 | } |
| 494 | } |
| 495 | |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 496 | if (!orom) { |
Dan Williams | 4711ba1 | 2011-03-11 10:43:57 -0800 | [diff] [blame] | 497 | source = "(firmware)"; |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 498 | orom = isci_request_firmware(pdev, fw); |
| 499 | if (!orom) { |
| 500 | /* TODO convert this to WARN_TAINT_ONCE once the |
| 501 | * orom/efi parameter support is widely available |
| 502 | */ |
| 503 | dev_warn(&pdev->dev, |
| 504 | "Loading user firmware failed, using default " |
| 505 | "values\n"); |
| 506 | dev_warn(&pdev->dev, |
| 507 | "Default OEM configuration being used: 4 " |
| 508 | "narrow ports, and default SAS Addresses\n"); |
Dave Jiang | 858d4aa | 2011-02-22 01:27:03 -0800 | [diff] [blame] | 509 | } |
Dave Jiang | 858d4aa | 2011-02-22 01:27:03 -0800 | [diff] [blame] | 510 | } |
| 511 | |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 512 | if (orom) |
Dan Williams | 3b67c1f | 2011-03-08 09:53:51 -0800 | [diff] [blame] | 513 | dev_info(&pdev->dev, |
Dan Williams | 4711ba1 | 2011-03-11 10:43:57 -0800 | [diff] [blame] | 514 | "OEM SAS parameters (version: %u.%u) loaded %s\n", |
Dan Williams | 3b67c1f | 2011-03-08 09:53:51 -0800 | [diff] [blame] | 515 | (orom->hdr.version & 0xf0) >> 4, |
Dan Williams | 4711ba1 | 2011-03-11 10:43:57 -0800 | [diff] [blame] | 516 | (orom->hdr.version & 0xf), source); |
Dan Williams | 3b67c1f | 2011-03-08 09:53:51 -0800 | [diff] [blame] | 517 | |
Dan Williams | d044af1 | 2011-03-08 09:52:49 -0800 | [diff] [blame] | 518 | pci_info->orom = orom; |
| 519 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 520 | err = isci_pci_init(pdev); |
| 521 | if (err) |
| 522 | return err; |
| 523 | |
| 524 | for (i = 0; i < num_controllers(pdev); i++) { |
| 525 | struct isci_host *h = isci_host_alloc(pdev, i); |
| 526 | |
| 527 | if (!h) { |
| 528 | err = -ENOMEM; |
| 529 | goto err_host_alloc; |
| 530 | } |
Dan Williams | b329aff | 2011-03-07 16:02:25 -0800 | [diff] [blame] | 531 | pci_info->hosts[i] = h; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | err = isci_setup_interrupts(pdev); |
| 535 | if (err) |
| 536 | goto err_host_alloc; |
| 537 | |
Dan Williams | b329aff | 2011-03-07 16:02:25 -0800 | [diff] [blame] | 538 | for_each_isci_host(i, isci_host, pdev) |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 539 | scsi_scan_host(isci_host->shost); |
| 540 | |
| 541 | return 0; |
| 542 | |
| 543 | err_host_alloc: |
Dan Williams | b329aff | 2011-03-07 16:02:25 -0800 | [diff] [blame] | 544 | for_each_isci_host(i, isci_host, pdev) |
Dan Williams | 34cad85 | 2011-03-10 00:01:43 -0800 | [diff] [blame] | 545 | isci_unregister(isci_host); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 546 | return err; |
| 547 | } |
| 548 | |
| 549 | static void __devexit isci_pci_remove(struct pci_dev *pdev) |
| 550 | { |
Dan Williams | d9dcb4b | 2011-06-30 17:38:32 -0700 | [diff] [blame^] | 551 | struct isci_host *ihost; |
Dan Williams | b329aff | 2011-03-07 16:02:25 -0800 | [diff] [blame] | 552 | int i; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 553 | |
Dan Williams | d9dcb4b | 2011-06-30 17:38:32 -0700 | [diff] [blame^] | 554 | for_each_isci_host(i, ihost, pdev) { |
| 555 | isci_unregister(ihost); |
| 556 | isci_host_deinit(ihost); |
| 557 | scic_controller_disable_interrupts(ihost); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 558 | } |
| 559 | } |
| 560 | |
Dan Williams | f942f32 | 2011-03-26 16:30:06 -0700 | [diff] [blame] | 561 | static struct pci_driver isci_pci_driver = { |
| 562 | .name = DRV_NAME, |
| 563 | .id_table = isci_id_table, |
| 564 | .probe = isci_pci_probe, |
| 565 | .remove = __devexit_p(isci_pci_remove), |
| 566 | }; |
| 567 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 568 | static __init int isci_init(void) |
| 569 | { |
Dan Williams | d9c3739 | 2011-03-03 17:59:32 -0800 | [diff] [blame] | 570 | int err; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 571 | |
| 572 | pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME); |
| 573 | |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 574 | isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); |
| 575 | if (!isci_transport_template) |
Dan Williams | d9c3739 | 2011-03-03 17:59:32 -0800 | [diff] [blame] | 576 | return -ENOMEM; |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 577 | |
| 578 | err = pci_register_driver(&isci_pci_driver); |
| 579 | if (err) |
Dan Williams | d9c3739 | 2011-03-03 17:59:32 -0800 | [diff] [blame] | 580 | sas_release_transport(isci_transport_template); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 581 | |
| 582 | return err; |
| 583 | } |
| 584 | |
| 585 | static __exit void isci_exit(void) |
| 586 | { |
| 587 | pci_unregister_driver(&isci_pci_driver); |
| 588 | sas_release_transport(isci_transport_template); |
Dan Williams | 6f231dd | 2011-07-02 22:56:22 -0700 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | MODULE_LICENSE("Dual BSD/GPL"); |
| 592 | MODULE_FIRMWARE(ISCI_FW_NAME); |
| 593 | module_init(isci_init); |
| 594 | module_exit(isci_exit); |