Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 1 | /* |
| 2 | * ata-serverworks.c - Serverworks PATA for new ATA layer |
| 3 | * (C) 2005 Red Hat Inc |
| 4 | * Alan Cox <alan@redhat.com> |
| 5 | * |
| 6 | * based upon |
| 7 | * |
| 8 | * serverworks.c |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 9 | * |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 10 | * Copyright (C) 1998-2000 Michel Aubry |
| 11 | * Copyright (C) 1998-2000 Andrzej Krzysztofowicz |
| 12 | * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> |
| 13 | * Portions copyright (c) 2001 Sun Microsystems |
| 14 | * |
| 15 | * |
| 16 | * RCC/ServerWorks IDE driver for Linux |
| 17 | * |
| 18 | * OSB4: `Open South Bridge' IDE Interface (fn 1) |
| 19 | * supports UDMA mode 2 (33 MB/s) |
| 20 | * |
| 21 | * CSB5: `Champion South Bridge' IDE Interface (fn 1) |
| 22 | * all revisions support UDMA mode 4 (66 MB/s) |
| 23 | * revision A2.0 and up support UDMA mode 5 (100 MB/s) |
| 24 | * |
| 25 | * *** The CSB5 does not provide ANY register *** |
| 26 | * *** to detect 80-conductor cable presence. *** |
| 27 | * |
| 28 | * CSB6: `Champion South Bridge' IDE Interface (optional: third channel) |
| 29 | * |
| 30 | * Documentation: |
| 31 | * Available under NDA only. Errata info very hard to get. |
| 32 | */ |
| 33 | |
| 34 | #include <linux/kernel.h> |
| 35 | #include <linux/module.h> |
| 36 | #include <linux/pci.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/blkdev.h> |
| 39 | #include <linux/delay.h> |
| 40 | #include <scsi/scsi_host.h> |
| 41 | #include <linux/libata.h> |
| 42 | |
| 43 | #define DRV_NAME "pata_serverworks" |
Alan Cox | 68d0d7a | 2006-09-26 22:24:31 +0100 | [diff] [blame] | 44 | #define DRV_VERSION "0.3.7" |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 45 | |
| 46 | #define SVWKS_CSB5_REVISION_NEW 0x92 /* min PCI_REVISION_ID for UDMA5 (A2.0) */ |
| 47 | #define SVWKS_CSB6_REVISION 0xa0 /* min PCI_REVISION_ID for UDMA4 (A1.0) */ |
| 48 | |
| 49 | /* Seagate Barracuda ATA IV Family drives in UDMA mode 5 |
| 50 | * can overrun their FIFOs when used with the CSB5 */ |
| 51 | |
| 52 | static const char *csb_bad_ata100[] = { |
| 53 | "ST320011A", |
| 54 | "ST340016A", |
| 55 | "ST360021A", |
| 56 | "ST380021A", |
| 57 | NULL |
| 58 | }; |
| 59 | |
| 60 | /** |
| 61 | * dell_cable - Dell serverworks cable detection |
| 62 | * @ap: ATA port to do cable detect |
| 63 | * |
| 64 | * Dell hide the 40/80 pin select for their interfaces in the top two |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 65 | * bits of the subsystem ID. |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 66 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 67 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 68 | static int dell_cable(struct ata_port *ap) { |
| 69 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 70 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 71 | if (pdev->subsystem_device & (1 << (ap->port_no + 14))) |
| 72 | return ATA_CBL_PATA80; |
| 73 | return ATA_CBL_PATA40; |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * sun_cable - Sun Cobalt 'Alpine' cable detection |
| 78 | * @ap: ATA port to do cable select |
| 79 | * |
| 80 | * Cobalt CSB5 IDE hides the 40/80pin in the top two bits of the |
| 81 | * subsystem ID the same as dell. We could use one function but we may |
| 82 | * need to extend the Dell one in future |
| 83 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 84 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 85 | static int sun_cable(struct ata_port *ap) { |
| 86 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 87 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 88 | if (pdev->subsystem_device & (1 << (ap->port_no + 14))) |
| 89 | return ATA_CBL_PATA80; |
| 90 | return ATA_CBL_PATA40; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * osb4_cable - OSB4 cable detect |
| 95 | * @ap: ATA port to check |
| 96 | * |
| 97 | * The OSB4 isn't UDMA66 capable so this is easy |
| 98 | */ |
| 99 | |
| 100 | static int osb4_cable(struct ata_port *ap) { |
| 101 | return ATA_CBL_PATA40; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * csb4_cable - CSB5/6 cable detect |
| 106 | * @ap: ATA port to check |
| 107 | * |
| 108 | * Serverworks default arrangement is to use the drive side detection |
| 109 | * only. |
| 110 | */ |
| 111 | |
| 112 | static int csb_cable(struct ata_port *ap) { |
| 113 | return ATA_CBL_PATA80; |
| 114 | } |
| 115 | |
| 116 | struct sv_cable_table { |
| 117 | int device; |
| 118 | int subvendor; |
| 119 | int (*cable_detect)(struct ata_port *ap); |
| 120 | }; |
| 121 | |
| 122 | /* |
| 123 | * Note that we don't copy the old serverworks code because the old |
| 124 | * code contains obvious mistakes |
| 125 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 126 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 127 | static struct sv_cable_table cable_detect[] = { |
| 128 | { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_VENDOR_ID_DELL, dell_cable }, |
| 129 | { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE, PCI_VENDOR_ID_DELL, dell_cable }, |
| 130 | { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_VENDOR_ID_SUN, sun_cable }, |
Alan Cox | 68d0d7a | 2006-09-26 22:24:31 +0100 | [diff] [blame] | 131 | { PCI_DEVICE_ID_SERVERWORKS_OSB4IDE, PCI_ANY_ID, osb4_cable }, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 132 | { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_ANY_ID, csb_cable }, |
| 133 | { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE, PCI_ANY_ID, csb_cable }, |
| 134 | { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2, PCI_ANY_ID, csb_cable }, |
| 135 | { PCI_DEVICE_ID_SERVERWORKS_HT1000IDE, PCI_ANY_ID, csb_cable }, |
| 136 | { } |
| 137 | }; |
| 138 | |
| 139 | /** |
| 140 | * serverworks_pre_reset - cable detection |
| 141 | * @ap: ATA port |
| 142 | * |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 143 | * Perform cable detection according to the device and subvendor |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 144 | * identifications |
| 145 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 146 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 147 | static int serverworks_pre_reset(struct ata_port *ap) { |
| 148 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 149 | struct sv_cable_table *cb = cable_detect; |
| 150 | |
| 151 | while(cb->device) { |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 152 | if (cb->device == pdev->device && |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 153 | (cb->subvendor == pdev->subsystem_vendor || |
| 154 | cb->subvendor == PCI_ANY_ID)) { |
| 155 | ap->cbl = cb->cable_detect(ap); |
| 156 | return ata_std_prereset(ap); |
| 157 | } |
| 158 | cb++; |
| 159 | } |
| 160 | |
| 161 | BUG(); |
| 162 | return -1; /* kill compiler warning */ |
| 163 | } |
| 164 | |
| 165 | static void serverworks_error_handler(struct ata_port *ap) |
| 166 | { |
| 167 | return ata_bmdma_drive_eh(ap, serverworks_pre_reset, ata_std_softreset, NULL, ata_std_postreset); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * serverworks_is_csb - Check for CSB or OSB |
| 172 | * @pdev: PCI device to check |
| 173 | * |
| 174 | * Returns true if the device being checked is known to be a CSB |
| 175 | * series device. |
| 176 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 177 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 178 | static u8 serverworks_is_csb(struct pci_dev *pdev) |
| 179 | { |
| 180 | switch (pdev->device) { |
| 181 | case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE: |
| 182 | case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE: |
| 183 | case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2: |
| 184 | case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE: |
| 185 | return 1; |
| 186 | default: |
| 187 | break; |
| 188 | } |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * serverworks_osb4_filter - mode selection filter |
| 194 | * @ap: ATA interface |
| 195 | * @adev: ATA device |
| 196 | * |
| 197 | * Filter the offered modes for the device to apply controller |
| 198 | * specific rules. OSB4 requires no UDMA for disks due to a FIFO |
| 199 | * bug we hit. |
| 200 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 201 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 202 | static unsigned long serverworks_osb4_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask) |
| 203 | { |
| 204 | if (adev->class == ATA_DEV_ATA) |
| 205 | mask &= ~ATA_MASK_UDMA; |
| 206 | return ata_pci_default_filter(ap, adev, mask); |
| 207 | } |
| 208 | |
| 209 | |
| 210 | /** |
| 211 | * serverworks_csb_filter - mode selection filter |
| 212 | * @ap: ATA interface |
| 213 | * @adev: ATA device |
| 214 | * |
| 215 | * Check the blacklist and disable UDMA5 if matched |
| 216 | */ |
| 217 | |
| 218 | static unsigned long serverworks_csb_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask) |
| 219 | { |
| 220 | const char *p; |
| 221 | char model_num[40]; |
| 222 | int len, i; |
| 223 | |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 224 | /* Disk, UDMA */ |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 225 | if (adev->class != ATA_DEV_ATA) |
| 226 | return ata_pci_default_filter(ap, adev, mask); |
| 227 | |
| 228 | /* Actually do need to check */ |
| 229 | ata_id_string(adev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num)); |
| 230 | /* Precuationary - why not do this in the libata core ?? */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 231 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 232 | len = strlen(model_num); |
| 233 | while ((len > 0) && (model_num[len - 1] == ' ')) { |
| 234 | len--; |
| 235 | model_num[len] = 0; |
| 236 | } |
| 237 | |
| 238 | for(i = 0; (p = csb_bad_ata100[i]) != NULL; i++) { |
| 239 | if (!strncmp(p, model_num, len)) |
| 240 | mask &= ~(0x1F << ATA_SHIFT_UDMA); |
| 241 | } |
| 242 | return ata_pci_default_filter(ap, adev, mask); |
| 243 | } |
| 244 | |
| 245 | |
| 246 | /** |
| 247 | * serverworks_set_piomode - set initial PIO mode data |
| 248 | * @ap: ATA interface |
| 249 | * @adev: ATA device |
| 250 | * |
| 251 | * Program the OSB4/CSB5 timing registers for PIO. The PIO register |
| 252 | * load is done as a simple lookup. |
| 253 | */ |
| 254 | static void serverworks_set_piomode(struct ata_port *ap, struct ata_device *adev) |
| 255 | { |
| 256 | static const u8 pio_mode[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 }; |
| 257 | int offset = 1 + (2 * ap->port_no) - adev->devno; |
| 258 | int devbits = (2 * ap->port_no + adev->devno) * 4; |
| 259 | u16 csb5_pio; |
| 260 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 261 | int pio = adev->pio_mode - XFER_PIO_0; |
| 262 | |
| 263 | pci_write_config_byte(pdev, 0x40 + offset, pio_mode[pio]); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 264 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 265 | /* The OSB4 just requires the timing but the CSB series want the |
| 266 | mode number as well */ |
| 267 | if (serverworks_is_csb(pdev)) { |
| 268 | pci_read_config_word(pdev, 0x4A, &csb5_pio); |
| 269 | csb5_pio &= ~(0x0F << devbits); |
| 270 | pci_write_config_byte(pdev, 0x4A, csb5_pio | (pio << devbits)); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * serverworks_set_dmamode - set initial DMA mode data |
| 276 | * @ap: ATA interface |
| 277 | * @adev: ATA device |
| 278 | * |
| 279 | * Program the MWDMA/UDMA modes for the serverworks OSB4/CSB5 |
| 280 | * chipset. The MWDMA mode values are pulled from a lookup table |
| 281 | * while the chipset uses mode number for UDMA. |
| 282 | */ |
| 283 | |
| 284 | static void serverworks_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
| 285 | { |
| 286 | static const u8 dma_mode[] = { 0x77, 0x21, 0x20 }; |
| 287 | int offset = 1 + 2 * ap->port_no - adev->devno; |
| 288 | int devbits = (2 * ap->port_no + adev->devno); |
| 289 | u8 ultra; |
| 290 | u8 ultra_cfg; |
| 291 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 292 | |
| 293 | pci_read_config_byte(pdev, 0x54, &ultra_cfg); |
| 294 | |
| 295 | if (adev->dma_mode >= XFER_UDMA_0) { |
| 296 | pci_write_config_byte(pdev, 0x44 + offset, 0x20); |
| 297 | |
| 298 | pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra); |
| 299 | ultra &= ~(0x0F << (ap->port_no * 4)); |
| 300 | ultra |= (adev->dma_mode - XFER_UDMA_0) |
| 301 | << (ap->port_no * 4); |
| 302 | pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra); |
| 303 | |
| 304 | ultra_cfg |= (1 << devbits); |
| 305 | } else { |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 306 | pci_write_config_byte(pdev, 0x44 + offset, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 307 | dma_mode[adev->dma_mode - XFER_MW_DMA_0]); |
| 308 | ultra_cfg &= ~(1 << devbits); |
| 309 | } |
| 310 | pci_write_config_byte(pdev, 0x54, ultra_cfg); |
| 311 | } |
| 312 | |
| 313 | static struct scsi_host_template serverworks_sht = { |
| 314 | .module = THIS_MODULE, |
| 315 | .name = DRV_NAME, |
| 316 | .ioctl = ata_scsi_ioctl, |
| 317 | .queuecommand = ata_scsi_queuecmd, |
| 318 | .can_queue = ATA_DEF_QUEUE, |
| 319 | .this_id = ATA_SHT_THIS_ID, |
| 320 | .sg_tablesize = LIBATA_MAX_PRD, |
| 321 | .max_sectors = ATA_MAX_SECTORS, |
| 322 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
| 323 | .emulated = ATA_SHT_EMULATED, |
| 324 | .use_clustering = ATA_SHT_USE_CLUSTERING, |
| 325 | .proc_name = DRV_NAME, |
| 326 | .dma_boundary = ATA_DMA_BOUNDARY, |
| 327 | .slave_configure = ata_scsi_slave_config, |
| 328 | .bios_param = ata_std_bios_param, |
| 329 | }; |
| 330 | |
| 331 | static struct ata_port_operations serverworks_osb4_port_ops = { |
| 332 | .port_disable = ata_port_disable, |
| 333 | .set_piomode = serverworks_set_piomode, |
| 334 | .set_dmamode = serverworks_set_dmamode, |
| 335 | .mode_filter = serverworks_osb4_filter, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 336 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 337 | .tf_load = ata_tf_load, |
| 338 | .tf_read = ata_tf_read, |
| 339 | .check_status = ata_check_status, |
| 340 | .exec_command = ata_exec_command, |
| 341 | .dev_select = ata_std_dev_select, |
| 342 | |
| 343 | .freeze = ata_bmdma_freeze, |
| 344 | .thaw = ata_bmdma_thaw, |
| 345 | .error_handler = serverworks_error_handler, |
| 346 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
| 347 | |
| 348 | .bmdma_setup = ata_bmdma_setup, |
| 349 | .bmdma_start = ata_bmdma_start, |
| 350 | .bmdma_stop = ata_bmdma_stop, |
| 351 | .bmdma_status = ata_bmdma_status, |
| 352 | |
| 353 | .qc_prep = ata_qc_prep, |
| 354 | .qc_issue = ata_qc_issue_prot, |
Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame^] | 355 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 356 | .data_xfer = ata_pio_data_xfer, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 357 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 358 | .irq_handler = ata_interrupt, |
Jeff Garzik | efbf3f1 | 2006-09-26 17:10:53 -0400 | [diff] [blame] | 359 | .irq_clear = ata_bmdma_irq_clear, |
| 360 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 361 | .port_start = ata_port_start, |
| 362 | .port_stop = ata_port_stop, |
| 363 | .host_stop = ata_host_stop |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 364 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 365 | |
| 366 | static struct ata_port_operations serverworks_csb_port_ops = { |
| 367 | .port_disable = ata_port_disable, |
| 368 | .set_piomode = serverworks_set_piomode, |
| 369 | .set_dmamode = serverworks_set_dmamode, |
| 370 | .mode_filter = serverworks_csb_filter, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 371 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 372 | .tf_load = ata_tf_load, |
| 373 | .tf_read = ata_tf_read, |
| 374 | .check_status = ata_check_status, |
| 375 | .exec_command = ata_exec_command, |
| 376 | .dev_select = ata_std_dev_select, |
| 377 | |
| 378 | .freeze = ata_bmdma_freeze, |
| 379 | .thaw = ata_bmdma_thaw, |
| 380 | .error_handler = serverworks_error_handler, |
| 381 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
| 382 | |
| 383 | .bmdma_setup = ata_bmdma_setup, |
| 384 | .bmdma_start = ata_bmdma_start, |
| 385 | .bmdma_stop = ata_bmdma_stop, |
| 386 | .bmdma_status = ata_bmdma_status, |
| 387 | |
| 388 | .qc_prep = ata_qc_prep, |
| 389 | .qc_issue = ata_qc_issue_prot, |
Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame^] | 390 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 391 | .data_xfer = ata_pio_data_xfer, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 392 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 393 | .irq_handler = ata_interrupt, |
Jeff Garzik | efbf3f1 | 2006-09-26 17:10:53 -0400 | [diff] [blame] | 394 | .irq_clear = ata_bmdma_irq_clear, |
| 395 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 396 | .port_start = ata_port_start, |
| 397 | .port_stop = ata_port_stop, |
| 398 | .host_stop = ata_host_stop |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 399 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 400 | |
| 401 | static int serverworks_fixup_osb4(struct pci_dev *pdev) |
| 402 | { |
| 403 | u32 reg; |
| 404 | struct pci_dev *isa_dev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS, |
| 405 | PCI_DEVICE_ID_SERVERWORKS_OSB4, NULL); |
| 406 | if (isa_dev) { |
| 407 | pci_read_config_dword(isa_dev, 0x64, ®); |
| 408 | reg &= ~0x00002000; /* disable 600ns interrupt mask */ |
| 409 | if (!(reg & 0x00004000)) |
| 410 | printk(KERN_DEBUG DRV_NAME ": UDMA not BIOS enabled.\n"); |
| 411 | reg |= 0x00004000; /* enable UDMA/33 support */ |
| 412 | pci_write_config_dword(isa_dev, 0x64, reg); |
| 413 | pci_dev_put(isa_dev); |
| 414 | return 0; |
| 415 | } |
| 416 | printk(KERN_WARNING "ata_serverworks: Unable to find bridge.\n"); |
| 417 | return -ENODEV; |
| 418 | } |
| 419 | |
| 420 | static int serverworks_fixup_csb(struct pci_dev *pdev) |
| 421 | { |
| 422 | u8 rev; |
| 423 | u8 btr; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 424 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 425 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); |
| 426 | |
| 427 | /* Third Channel Test */ |
| 428 | if (!(PCI_FUNC(pdev->devfn) & 1)) { |
| 429 | struct pci_dev * findev = NULL; |
| 430 | u32 reg4c = 0; |
| 431 | findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS, |
| 432 | PCI_DEVICE_ID_SERVERWORKS_CSB5, NULL); |
| 433 | if (findev) { |
| 434 | pci_read_config_dword(findev, 0x4C, ®4c); |
| 435 | reg4c &= ~0x000007FF; |
| 436 | reg4c |= 0x00000040; |
| 437 | reg4c |= 0x00000020; |
| 438 | pci_write_config_dword(findev, 0x4C, reg4c); |
| 439 | pci_dev_put(findev); |
| 440 | } |
| 441 | } else { |
| 442 | struct pci_dev * findev = NULL; |
| 443 | u8 reg41 = 0; |
| 444 | |
| 445 | findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS, |
| 446 | PCI_DEVICE_ID_SERVERWORKS_CSB6, NULL); |
| 447 | if (findev) { |
| 448 | pci_read_config_byte(findev, 0x41, ®41); |
| 449 | reg41 &= ~0x40; |
| 450 | pci_write_config_byte(findev, 0x41, reg41); |
| 451 | pci_dev_put(findev); |
| 452 | } |
| 453 | } |
| 454 | /* setup the UDMA Control register |
| 455 | * |
| 456 | * 1. clear bit 6 to enable DMA |
| 457 | * 2. enable DMA modes with bits 0-1 |
| 458 | * 00 : legacy |
| 459 | * 01 : udma2 |
| 460 | * 10 : udma2/udma4 |
| 461 | * 11 : udma2/udma4/udma5 |
| 462 | */ |
| 463 | pci_read_config_byte(pdev, 0x5A, &btr); |
| 464 | btr &= ~0x40; |
| 465 | if (!(PCI_FUNC(pdev->devfn) & 1)) |
| 466 | btr |= 0x2; |
| 467 | else |
| 468 | btr |= (rev >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2; |
| 469 | pci_write_config_byte(pdev, 0x5A, btr); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 470 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 471 | return btr; |
| 472 | } |
| 473 | |
| 474 | static void serverworks_fixup_ht1000(struct pci_dev *pdev) |
| 475 | { |
| 476 | u8 btr; |
| 477 | /* Setup HT1000 SouthBridge Controller - Single Channel Only */ |
| 478 | pci_read_config_byte(pdev, 0x5A, &btr); |
| 479 | btr &= ~0x40; |
| 480 | btr |= 0x3; |
| 481 | pci_write_config_byte(pdev, 0x5A, btr); |
| 482 | } |
| 483 | |
| 484 | |
| 485 | static int serverworks_init_one(struct pci_dev *pdev, const struct pci_device_id *id) |
| 486 | { |
| 487 | int ports = 2; |
| 488 | static struct ata_port_info info[4] = { |
| 489 | { /* OSB4 */ |
| 490 | .sht = &serverworks_sht, |
| 491 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, |
| 492 | .pio_mask = 0x1f, |
| 493 | .mwdma_mask = 0x07, |
| 494 | .udma_mask = 0x07, |
| 495 | .port_ops = &serverworks_osb4_port_ops |
| 496 | }, { /* OSB4 no UDMA */ |
| 497 | .sht = &serverworks_sht, |
| 498 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, |
| 499 | .pio_mask = 0x1f, |
| 500 | .mwdma_mask = 0x07, |
| 501 | .udma_mask = 0x00, |
| 502 | .port_ops = &serverworks_osb4_port_ops |
| 503 | }, { /* CSB5 */ |
| 504 | .sht = &serverworks_sht, |
| 505 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, |
| 506 | .pio_mask = 0x1f, |
| 507 | .mwdma_mask = 0x07, |
| 508 | .udma_mask = 0x1f, |
| 509 | .port_ops = &serverworks_csb_port_ops |
| 510 | }, { /* CSB5 - later revisions*/ |
| 511 | .sht = &serverworks_sht, |
| 512 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, |
| 513 | .pio_mask = 0x1f, |
| 514 | .mwdma_mask = 0x07, |
| 515 | .udma_mask = 0x3f, |
| 516 | .port_ops = &serverworks_csb_port_ops |
| 517 | } |
| 518 | }; |
| 519 | static struct ata_port_info *port_info[2]; |
| 520 | struct ata_port_info *devinfo = &info[id->driver_data]; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 521 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 522 | /* Force master latency timer to 64 PCI clocks */ |
| 523 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x40); |
| 524 | |
| 525 | /* OSB4 : South Bridge and IDE */ |
| 526 | if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) { |
| 527 | /* Select non UDMA capable OSB4 if we can't do fixups */ |
| 528 | if ( serverworks_fixup_osb4(pdev) < 0) |
| 529 | devinfo = &info[1]; |
| 530 | } |
| 531 | /* setup CSB5/CSB6 : South Bridge and IDE option RAID */ |
| 532 | else if ((pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE) || |
| 533 | (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) || |
| 534 | (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) { |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 535 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 536 | /* If the returned btr is the newer revision then |
| 537 | select the right info block */ |
| 538 | if (serverworks_fixup_csb(pdev) == 3) |
| 539 | devinfo = &info[3]; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 540 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 541 | /* Is this the 3rd channel CSB6 IDE ? */ |
| 542 | if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2) |
| 543 | ports = 1; |
| 544 | } |
| 545 | /* setup HT1000E */ |
| 546 | else if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE) |
| 547 | serverworks_fixup_ht1000(pdev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 548 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 549 | if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE) |
| 550 | ata_pci_clear_simplex(pdev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 551 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 552 | port_info[0] = port_info[1] = devinfo; |
| 553 | return ata_pci_init_one(pdev, port_info, ports); |
| 554 | } |
| 555 | |
| 556 | static struct pci_device_id serverworks[] = { |
| 557 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4IDE), 0}, |
| 558 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE), 2}, |
| 559 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE), 2}, |
| 560 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2), 2}, |
| 561 | { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000IDE), 2}, |
| 562 | { 0, }, |
| 563 | }; |
| 564 | |
| 565 | static struct pci_driver serverworks_pci_driver = { |
| 566 | .name = DRV_NAME, |
| 567 | .id_table = serverworks, |
| 568 | .probe = serverworks_init_one, |
| 569 | .remove = ata_pci_remove_one |
| 570 | }; |
| 571 | |
| 572 | static int __init serverworks_init(void) |
| 573 | { |
| 574 | return pci_register_driver(&serverworks_pci_driver); |
| 575 | } |
| 576 | |
| 577 | |
| 578 | static void __exit serverworks_exit(void) |
| 579 | { |
| 580 | pci_unregister_driver(&serverworks_pci_driver); |
| 581 | } |
| 582 | |
| 583 | |
| 584 | MODULE_AUTHOR("Alan Cox"); |
| 585 | MODULE_DESCRIPTION("low-level driver for Serverworks OSB4/CSB5/CSB6"); |
| 586 | MODULE_LICENSE("GPL"); |
| 587 | MODULE_DEVICE_TABLE(pci, serverworks); |
| 588 | MODULE_VERSION(DRV_VERSION); |
| 589 | |
| 590 | module_init(serverworks_init); |
| 591 | module_exit(serverworks_exit); |