| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 1 | /* | 
|  | 2 | * pata_ali.c 	- ALI 15x3 PATA for new ATA layer | 
|  | 3 | *			  (C) 2005 Red Hat Inc | 
|  | 4 | *			  Alan Cox <alan@redhat.com> | 
|  | 5 | * | 
|  | 6 | * based in part upon | 
|  | 7 | * linux/drivers/ide/pci/alim15x3.c		Version 0.17	2003/01/02 | 
|  | 8 | * | 
|  | 9 | *  Copyright (C) 1998-2000 Michel Aubry, Maintainer | 
|  | 10 | *  Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer | 
|  | 11 | *  Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer | 
|  | 12 | * | 
|  | 13 | *  Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org) | 
|  | 14 | *  May be copied or modified under the terms of the GNU General Public License | 
|  | 15 | *  Copyright (C) 2002 Alan Cox <alan@redhat.com> | 
|  | 16 | *  ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw> | 
|  | 17 | * | 
|  | 18 | *  Documentation | 
|  | 19 | *	Chipset documentation available under NDA only | 
|  | 20 | * | 
|  | 21 | *  TODO/CHECK | 
|  | 22 | *	Cannot have ATAPI on both master & slave for rev < c2 (???) but | 
|  | 23 | *	otherwise should do atapi DMA. | 
|  | 24 | */ | 
|  | 25 |  | 
|  | 26 | #include <linux/kernel.h> | 
|  | 27 | #include <linux/module.h> | 
|  | 28 | #include <linux/pci.h> | 
|  | 29 | #include <linux/init.h> | 
|  | 30 | #include <linux/blkdev.h> | 
|  | 31 | #include <linux/delay.h> | 
|  | 32 | #include <scsi/scsi_host.h> | 
|  | 33 | #include <linux/libata.h> | 
|  | 34 | #include <linux/dmi.h> | 
|  | 35 |  | 
|  | 36 | #define DRV_NAME "pata_ali" | 
| Alan Cox | a0a00cb | 2006-10-04 12:47:14 +0100 | [diff] [blame] | 37 | #define DRV_VERSION "0.6.6" | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 38 |  | 
|  | 39 | /* | 
|  | 40 | *	Cable special cases | 
|  | 41 | */ | 
|  | 42 |  | 
|  | 43 | static struct dmi_system_id cable_dmi_table[] = { | 
|  | 44 | { | 
|  | 45 | .ident = "HP Pavilion N5430", | 
|  | 46 | .matches = { | 
|  | 47 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | 
|  | 48 | DMI_MATCH(DMI_BOARD_NAME, "OmniBook N32N-736"), | 
|  | 49 | }, | 
|  | 50 | }, | 
|  | 51 | { } | 
|  | 52 | }; | 
|  | 53 |  | 
|  | 54 | static int ali_cable_override(struct pci_dev *pdev) | 
|  | 55 | { | 
|  | 56 | /* Fujitsu P2000 */ | 
|  | 57 | if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF) | 
|  | 58 | return 1; | 
|  | 59 | /* Systems by DMI */ | 
|  | 60 | if (dmi_check_system(cable_dmi_table)) | 
|  | 61 | return 1; | 
|  | 62 | return 0; | 
|  | 63 | } | 
|  | 64 |  | 
|  | 65 | /** | 
|  | 66 | *	ali_c2_cable_detect	-	cable detection | 
|  | 67 | *	@ap: ATA port | 
|  | 68 | * | 
|  | 69 | *	Perform cable detection for C2 and later revisions | 
|  | 70 | */ | 
|  | 71 |  | 
|  | 72 | static int ali_c2_cable_detect(struct ata_port *ap) | 
|  | 73 | { | 
|  | 74 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | 
|  | 75 | u8 ata66; | 
|  | 76 |  | 
|  | 77 | /* Certain laptops use short but suitable cables and don't | 
|  | 78 | implement the detect logic */ | 
|  | 79 |  | 
|  | 80 | if (ali_cable_override(pdev)) | 
|  | 81 | return ATA_CBL_PATA80; | 
|  | 82 |  | 
|  | 83 | /* Host view cable detect 0x4A bit 0 primary bit 1 secondary | 
|  | 84 | Bit set for 40 pin */ | 
|  | 85 | pci_read_config_byte(pdev, 0x4A, &ata66); | 
|  | 86 | if (ata66 & (1 << ap->port_no)) | 
|  | 87 | return ATA_CBL_PATA40; | 
|  | 88 | else | 
|  | 89 | return ATA_CBL_PATA80; | 
|  | 90 | } | 
|  | 91 |  | 
|  | 92 | /** | 
|  | 93 | *	ali_early_error_handler	-	reset for eary chip | 
|  | 94 | *	@ap: ATA port | 
|  | 95 | * | 
|  | 96 | *	Handle the reset callback for the later chips with cable detect | 
|  | 97 | */ | 
|  | 98 |  | 
|  | 99 | static int ali_c2_pre_reset(struct ata_port *ap) | 
|  | 100 | { | 
|  | 101 | ap->cbl = ali_c2_cable_detect(ap); | 
|  | 102 | return ata_std_prereset(ap); | 
|  | 103 | } | 
|  | 104 |  | 
|  | 105 | static void ali_c2_error_handler(struct ata_port *ap) | 
|  | 106 | { | 
|  | 107 | ata_bmdma_drive_eh(ap, ali_c2_pre_reset, | 
|  | 108 | ata_std_softreset, NULL, | 
|  | 109 | ata_std_postreset); | 
|  | 110 | } | 
|  | 111 |  | 
|  | 112 | /** | 
|  | 113 | *	ali_early_cable_detect	-	cable detection | 
|  | 114 | *	@ap: ATA port | 
|  | 115 | * | 
|  | 116 | *	Perform cable detection for older chipsets. This turns out to be | 
|  | 117 | *	rather easy to implement | 
|  | 118 | */ | 
|  | 119 |  | 
|  | 120 | static int ali_early_cable_detect(struct ata_port *ap) | 
|  | 121 | { | 
|  | 122 | return ATA_CBL_PATA40; | 
|  | 123 | } | 
|  | 124 |  | 
|  | 125 | /** | 
|  | 126 | *	ali_early_probe_init	-	reset for early chip | 
|  | 127 | *	@ap: ATA port | 
|  | 128 | * | 
|  | 129 | *	Handle the reset callback for the early (pre cable detect) chips. | 
|  | 130 | */ | 
|  | 131 |  | 
|  | 132 | static int ali_early_pre_reset(struct ata_port *ap) | 
|  | 133 | { | 
|  | 134 | ap->cbl = ali_early_cable_detect(ap); | 
|  | 135 | return ata_std_prereset(ap); | 
|  | 136 | } | 
|  | 137 |  | 
|  | 138 | static void ali_early_error_handler(struct ata_port *ap) | 
|  | 139 | { | 
|  | 140 | return ata_bmdma_drive_eh(ap, ali_early_pre_reset, | 
|  | 141 | ata_std_softreset, NULL, | 
|  | 142 | ata_std_postreset); | 
|  | 143 | } | 
|  | 144 |  | 
|  | 145 | /** | 
|  | 146 | *	ali_20_filter		-	filter for earlier ALI DMA | 
|  | 147 | *	@ap: ALi ATA port | 
|  | 148 | *	@adev: attached device | 
|  | 149 | * | 
|  | 150 | *	Ensure that we do not do DMA on CD devices. We may be able to | 
|  | 151 | *	fix that later on. Also ensure we do not do UDMA on WDC drives | 
|  | 152 | */ | 
|  | 153 |  | 
|  | 154 | static unsigned long ali_20_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask) | 
|  | 155 | { | 
|  | 156 | char model_num[40]; | 
|  | 157 | /* No DMA on anything but a disk for now */ | 
|  | 158 | if (adev->class != ATA_DEV_ATA) | 
|  | 159 | mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); | 
|  | 160 | ata_id_string(adev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num)); | 
|  | 161 | if (strstr(model_num, "WDC")) | 
|  | 162 | return mask &= ~ATA_MASK_UDMA; | 
|  | 163 | return ata_pci_default_filter(ap, adev, mask); | 
|  | 164 | } | 
|  | 165 |  | 
|  | 166 | /** | 
|  | 167 | *	ali_fifo_control	-	FIFO manager | 
|  | 168 | *	@ap: ALi channel to control | 
|  | 169 | *	@adev: device for FIFO control | 
|  | 170 | *	@on: 0 for off 1 for on | 
|  | 171 | * | 
|  | 172 | *	Enable or disable the FIFO on a given device. Because of the way the | 
|  | 173 | *	ALi FIFO works it provides a boost on ATA disk but can be confused by | 
|  | 174 | *	ATAPI and we must therefore manage it. | 
|  | 175 | */ | 
|  | 176 |  | 
|  | 177 | static void ali_fifo_control(struct ata_port *ap, struct ata_device *adev, int on) | 
|  | 178 | { | 
|  | 179 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | 
|  | 180 | int pio_fifo = 0x54 + ap->port_no; | 
|  | 181 | u8 fifo; | 
|  | 182 | int shift = 4 * adev->devno; | 
|  | 183 |  | 
|  | 184 | /* ATA - FIFO on set nibble to 0x05, ATAPI - FIFO off, set nibble to | 
|  | 185 | 0x00. Not all the docs agree but the behaviour we now use is the | 
|  | 186 | one stated in the BIOS Programming Guide */ | 
| Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 187 |  | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 188 | pci_read_config_byte(pdev, pio_fifo, &fifo); | 
|  | 189 | fifo &= ~(0x0F << shift); | 
|  | 190 | if (on) | 
|  | 191 | fifo |= (on << shift); | 
|  | 192 | pci_write_config_byte(pdev, pio_fifo, fifo); | 
|  | 193 | } | 
|  | 194 |  | 
|  | 195 | /** | 
|  | 196 | *	ali_program_modes	-	load mode registers | 
|  | 197 | *	@ap: ALi channel to load | 
|  | 198 | *	@adev: Device the timing is for | 
|  | 199 | *	@cmd: Command timing | 
|  | 200 | *	@data: Data timing | 
|  | 201 | *	@ultra: UDMA timing or zero for off | 
|  | 202 | * | 
|  | 203 | *	Loads the timing registers for cmd/data and disable UDMA if | 
|  | 204 | *	ultra is zero. If ultra is set then load and enable the UDMA | 
|  | 205 | *	timing but do not touch the command/data timing. | 
|  | 206 | */ | 
|  | 207 |  | 
|  | 208 | static void ali_program_modes(struct ata_port *ap, struct ata_device *adev, struct ata_timing *t, u8 ultra) | 
|  | 209 | { | 
|  | 210 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | 
|  | 211 | int cas = 0x58 + 4 * ap->port_no;	/* Command timing */ | 
|  | 212 | int cbt = 0x59 + 4 * ap->port_no;	/* Command timing */ | 
|  | 213 | int drwt = 0x5A + 4 * ap->port_no + adev->devno; /* R/W timing */ | 
|  | 214 | int udmat = 0x56 + ap->port_no;	/* UDMA timing */ | 
|  | 215 | int shift = 4 * adev->devno; | 
|  | 216 | u8 udma; | 
|  | 217 |  | 
|  | 218 | if (t != NULL) { | 
|  | 219 | t->setup = FIT(t->setup, 1, 8) & 7; | 
|  | 220 | t->act8b = FIT(t->act8b, 1, 8) & 7; | 
|  | 221 | t->rec8b = FIT(t->rec8b, 1, 16) & 15; | 
|  | 222 | t->active = FIT(t->active, 1, 8) & 7; | 
|  | 223 | t->recover = FIT(t->recover, 1, 16) & 15; | 
|  | 224 |  | 
|  | 225 | pci_write_config_byte(pdev, cas, t->setup); | 
|  | 226 | pci_write_config_byte(pdev, cbt, (t->act8b << 4) | t->rec8b); | 
|  | 227 | pci_write_config_byte(pdev, drwt, (t->active << 4) | t->recover); | 
|  | 228 | } | 
|  | 229 |  | 
|  | 230 | /* Set up the UDMA enable */ | 
|  | 231 | pci_read_config_byte(pdev, udmat, &udma); | 
|  | 232 | udma &= ~(0x0F << shift); | 
|  | 233 | udma |= ultra << shift; | 
|  | 234 | pci_write_config_byte(pdev, udmat, udma); | 
|  | 235 | } | 
|  | 236 |  | 
|  | 237 | /** | 
|  | 238 | *	ali_set_piomode	-	set initial PIO mode data | 
|  | 239 | *	@ap: ATA interface | 
|  | 240 | *	@adev: ATA device | 
|  | 241 | * | 
|  | 242 | *	Program the ALi registers for PIO mode. FIXME: add timings for | 
|  | 243 | *	PIO5. | 
|  | 244 | */ | 
|  | 245 |  | 
|  | 246 | static void ali_set_piomode(struct ata_port *ap, struct ata_device *adev) | 
|  | 247 | { | 
|  | 248 | struct ata_device *pair = ata_dev_pair(adev); | 
|  | 249 | struct ata_timing t; | 
|  | 250 | unsigned long T =  1000000000 / 33333;	/* PCI clock based */ | 
|  | 251 |  | 
|  | 252 | ata_timing_compute(adev, adev->pio_mode, &t, T, 1); | 
|  | 253 | if (pair) { | 
|  | 254 | struct ata_timing p; | 
|  | 255 | ata_timing_compute(pair, pair->pio_mode, &p, T, 1); | 
|  | 256 | ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); | 
|  | 257 | if (pair->dma_mode) { | 
|  | 258 | ata_timing_compute(pair, pair->dma_mode, &p, T, 1); | 
|  | 259 | ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); | 
|  | 260 | } | 
|  | 261 | } | 
|  | 262 |  | 
|  | 263 | /* PIO FIFO is only permitted on ATA disk */ | 
|  | 264 | if (adev->class != ATA_DEV_ATA) | 
|  | 265 | ali_fifo_control(ap, adev, 0x00); | 
|  | 266 | ali_program_modes(ap, adev, &t, 0); | 
|  | 267 | if (adev->class == ATA_DEV_ATA) | 
|  | 268 | ali_fifo_control(ap, adev, 0x05); | 
|  | 269 |  | 
|  | 270 | } | 
|  | 271 |  | 
|  | 272 | /** | 
|  | 273 | *	ali_set_dmamode	-	set initial DMA mode data | 
|  | 274 | *	@ap: ATA interface | 
|  | 275 | *	@adev: ATA device | 
|  | 276 | * | 
|  | 277 | *	FIXME: MWDMA timings | 
|  | 278 | */ | 
|  | 279 |  | 
|  | 280 | static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev) | 
|  | 281 | { | 
|  | 282 | static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD }; | 
|  | 283 | struct ata_device *pair = ata_dev_pair(adev); | 
|  | 284 | struct ata_timing t; | 
|  | 285 | unsigned long T =  1000000000 / 33333;	/* PCI clock based */ | 
|  | 286 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | 
|  | 287 |  | 
|  | 288 |  | 
|  | 289 | if (adev->class == ATA_DEV_ATA) | 
|  | 290 | ali_fifo_control(ap, adev, 0x08); | 
|  | 291 |  | 
|  | 292 | if (adev->dma_mode >= XFER_UDMA_0) { | 
|  | 293 | ali_program_modes(ap, adev, NULL, udma_timing[adev->dma_mode - XFER_UDMA_0]); | 
|  | 294 | if (adev->dma_mode >= XFER_UDMA_3) { | 
|  | 295 | u8 reg4b; | 
|  | 296 | pci_read_config_byte(pdev, 0x4B, ®4b); | 
|  | 297 | reg4b |= 1; | 
|  | 298 | pci_write_config_byte(pdev, 0x4B, reg4b); | 
|  | 299 | } | 
|  | 300 | } else { | 
|  | 301 | ata_timing_compute(adev, adev->dma_mode, &t, T, 1); | 
|  | 302 | if (pair) { | 
|  | 303 | struct ata_timing p; | 
|  | 304 | ata_timing_compute(pair, pair->pio_mode, &p, T, 1); | 
|  | 305 | ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); | 
|  | 306 | if (pair->dma_mode) { | 
|  | 307 | ata_timing_compute(pair, pair->dma_mode, &p, T, 1); | 
|  | 308 | ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); | 
|  | 309 | } | 
|  | 310 | } | 
|  | 311 | ali_program_modes(ap, adev, &t, 0); | 
|  | 312 | } | 
|  | 313 | } | 
|  | 314 |  | 
|  | 315 | /** | 
|  | 316 | *	ali_lock_sectors	-	Keep older devices to 255 sector mode | 
|  | 317 | *	@ap: ATA port | 
|  | 318 | *	@adev: Device | 
|  | 319 | * | 
|  | 320 | *	Called during the bus probe for each device that is found. We use | 
|  | 321 | *	this call to lock the sector count of the device to 255 or less on | 
|  | 322 | *	older ALi controllers. If we didn't do this then large I/O's would | 
|  | 323 | *	require LBA48 commands which the older ALi requires are issued by | 
|  | 324 | *	slower PIO methods | 
|  | 325 | */ | 
|  | 326 |  | 
|  | 327 | static void ali_lock_sectors(struct ata_port *ap, struct ata_device *adev) | 
|  | 328 | { | 
|  | 329 | adev->max_sectors = 255; | 
|  | 330 | } | 
|  | 331 |  | 
|  | 332 | static struct scsi_host_template ali_sht = { | 
|  | 333 | .module			= THIS_MODULE, | 
|  | 334 | .name			= DRV_NAME, | 
|  | 335 | .ioctl			= ata_scsi_ioctl, | 
|  | 336 | .queuecommand		= ata_scsi_queuecmd, | 
|  | 337 | .can_queue		= ATA_DEF_QUEUE, | 
|  | 338 | .this_id		= ATA_SHT_THIS_ID, | 
|  | 339 | .sg_tablesize		= LIBATA_MAX_PRD, | 
|  | 340 | /* Keep LBA28 counts so large I/O's don't turn LBA48 and PIO | 
|  | 341 | with older controllers. Not locked so will grow on C5 or later */ | 
|  | 342 | .max_sectors		= 255, | 
|  | 343 | .cmd_per_lun		= ATA_SHT_CMD_PER_LUN, | 
|  | 344 | .emulated		= ATA_SHT_EMULATED, | 
|  | 345 | .use_clustering		= ATA_SHT_USE_CLUSTERING, | 
|  | 346 | .proc_name		= DRV_NAME, | 
|  | 347 | .dma_boundary		= ATA_DMA_BOUNDARY, | 
|  | 348 | .slave_configure	= ata_scsi_slave_config, | 
|  | 349 | .bios_param		= ata_std_bios_param, | 
|  | 350 | }; | 
|  | 351 |  | 
|  | 352 | /* | 
|  | 353 | *	Port operations for PIO only ALi | 
|  | 354 | */ | 
|  | 355 |  | 
|  | 356 | static struct ata_port_operations ali_early_port_ops = { | 
|  | 357 | .port_disable	= ata_port_disable, | 
|  | 358 | .set_piomode	= ali_set_piomode, | 
|  | 359 | .tf_load	= ata_tf_load, | 
|  | 360 | .tf_read	= ata_tf_read, | 
|  | 361 | .check_status 	= ata_check_status, | 
|  | 362 | .exec_command	= ata_exec_command, | 
|  | 363 | .dev_select 	= ata_std_dev_select, | 
|  | 364 |  | 
|  | 365 | .freeze		= ata_bmdma_freeze, | 
|  | 366 | .thaw		= ata_bmdma_thaw, | 
|  | 367 | .error_handler	= ali_early_error_handler, | 
|  | 368 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | 
|  | 369 |  | 
|  | 370 | .qc_prep 	= ata_qc_prep, | 
|  | 371 | .qc_issue	= ata_qc_issue_prot, | 
| Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 372 |  | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 373 | .data_xfer	= ata_pio_data_xfer, | 
|  | 374 |  | 
|  | 375 | .irq_handler	= ata_interrupt, | 
|  | 376 | .irq_clear	= ata_bmdma_irq_clear, | 
|  | 377 |  | 
|  | 378 | .port_start	= ata_port_start, | 
|  | 379 | .port_stop	= ata_port_stop, | 
|  | 380 | .host_stop	= ata_host_stop | 
|  | 381 | }; | 
|  | 382 |  | 
|  | 383 | /* | 
|  | 384 | *	Port operations for DMA capable ALi without cable | 
|  | 385 | *	detect | 
|  | 386 | */ | 
|  | 387 | static struct ata_port_operations ali_20_port_ops = { | 
|  | 388 | .port_disable	= ata_port_disable, | 
|  | 389 |  | 
|  | 390 | .set_piomode	= ali_set_piomode, | 
|  | 391 | .set_dmamode	= ali_set_dmamode, | 
|  | 392 | .mode_filter	= ali_20_filter, | 
|  | 393 |  | 
|  | 394 | .tf_load	= ata_tf_load, | 
|  | 395 | .tf_read	= ata_tf_read, | 
|  | 396 | .check_status 	= ata_check_status, | 
|  | 397 | .exec_command	= ata_exec_command, | 
|  | 398 | .dev_select 	= ata_std_dev_select, | 
|  | 399 | .dev_config	= ali_lock_sectors, | 
|  | 400 |  | 
|  | 401 | .freeze		= ata_bmdma_freeze, | 
|  | 402 | .thaw		= ata_bmdma_thaw, | 
|  | 403 | .error_handler	= ali_early_error_handler, | 
|  | 404 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | 
|  | 405 |  | 
|  | 406 | .bmdma_setup 	= ata_bmdma_setup, | 
|  | 407 | .bmdma_start 	= ata_bmdma_start, | 
|  | 408 | .bmdma_stop	= ata_bmdma_stop, | 
|  | 409 | .bmdma_status 	= ata_bmdma_status, | 
|  | 410 |  | 
|  | 411 | .qc_prep 	= ata_qc_prep, | 
|  | 412 | .qc_issue	= ata_qc_issue_prot, | 
| Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 413 |  | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 414 | .data_xfer	= ata_pio_data_xfer, | 
|  | 415 |  | 
|  | 416 | .irq_handler	= ata_interrupt, | 
|  | 417 | .irq_clear	= ata_bmdma_irq_clear, | 
|  | 418 |  | 
|  | 419 | .port_start	= ata_port_start, | 
|  | 420 | .port_stop	= ata_port_stop, | 
|  | 421 | .host_stop	= ata_host_stop | 
|  | 422 | }; | 
|  | 423 |  | 
|  | 424 | /* | 
|  | 425 | *	Port operations for DMA capable ALi with cable detect | 
|  | 426 | */ | 
|  | 427 | static struct ata_port_operations ali_c2_port_ops = { | 
|  | 428 | .port_disable	= ata_port_disable, | 
|  | 429 | .set_piomode	= ali_set_piomode, | 
|  | 430 | .set_dmamode	= ali_set_dmamode, | 
|  | 431 | .mode_filter	= ata_pci_default_filter, | 
|  | 432 | .tf_load	= ata_tf_load, | 
|  | 433 | .tf_read	= ata_tf_read, | 
|  | 434 | .check_status 	= ata_check_status, | 
|  | 435 | .exec_command	= ata_exec_command, | 
|  | 436 | .dev_select 	= ata_std_dev_select, | 
|  | 437 | .dev_config	= ali_lock_sectors, | 
|  | 438 |  | 
|  | 439 | .freeze		= ata_bmdma_freeze, | 
|  | 440 | .thaw		= ata_bmdma_thaw, | 
|  | 441 | .error_handler	= ali_c2_error_handler, | 
|  | 442 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | 
|  | 443 |  | 
|  | 444 | .bmdma_setup 	= ata_bmdma_setup, | 
|  | 445 | .bmdma_start 	= ata_bmdma_start, | 
|  | 446 | .bmdma_stop	= ata_bmdma_stop, | 
|  | 447 | .bmdma_status 	= ata_bmdma_status, | 
|  | 448 |  | 
|  | 449 | .qc_prep 	= ata_qc_prep, | 
|  | 450 | .qc_issue	= ata_qc_issue_prot, | 
| Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 451 |  | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 452 | .data_xfer	= ata_pio_data_xfer, | 
|  | 453 |  | 
|  | 454 | .irq_handler	= ata_interrupt, | 
|  | 455 | .irq_clear	= ata_bmdma_irq_clear, | 
|  | 456 |  | 
|  | 457 | .port_start	= ata_port_start, | 
|  | 458 | .port_stop	= ata_port_stop, | 
|  | 459 | .host_stop	= ata_host_stop | 
|  | 460 | }; | 
|  | 461 |  | 
|  | 462 | /* | 
|  | 463 | *	Port operations for DMA capable ALi with cable detect and LBA48 | 
|  | 464 | */ | 
|  | 465 | static struct ata_port_operations ali_c5_port_ops = { | 
|  | 466 | .port_disable	= ata_port_disable, | 
|  | 467 | .set_piomode	= ali_set_piomode, | 
|  | 468 | .set_dmamode	= ali_set_dmamode, | 
|  | 469 | .mode_filter	= ata_pci_default_filter, | 
|  | 470 | .tf_load	= ata_tf_load, | 
|  | 471 | .tf_read	= ata_tf_read, | 
|  | 472 | .check_status 	= ata_check_status, | 
|  | 473 | .exec_command	= ata_exec_command, | 
|  | 474 | .dev_select 	= ata_std_dev_select, | 
|  | 475 |  | 
|  | 476 | .freeze		= ata_bmdma_freeze, | 
|  | 477 | .thaw		= ata_bmdma_thaw, | 
|  | 478 | .error_handler	= ali_c2_error_handler, | 
|  | 479 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | 
|  | 480 |  | 
|  | 481 | .bmdma_setup 	= ata_bmdma_setup, | 
|  | 482 | .bmdma_start 	= ata_bmdma_start, | 
|  | 483 | .bmdma_stop	= ata_bmdma_stop, | 
|  | 484 | .bmdma_status 	= ata_bmdma_status, | 
|  | 485 |  | 
|  | 486 | .qc_prep 	= ata_qc_prep, | 
|  | 487 | .qc_issue	= ata_qc_issue_prot, | 
| Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 488 |  | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 489 | .data_xfer	= ata_pio_data_xfer, | 
|  | 490 |  | 
|  | 491 | .irq_handler	= ata_interrupt, | 
|  | 492 | .irq_clear	= ata_bmdma_irq_clear, | 
|  | 493 |  | 
|  | 494 | .port_start	= ata_port_start, | 
|  | 495 | .port_stop	= ata_port_stop, | 
|  | 496 | .host_stop	= ata_host_stop | 
|  | 497 | }; | 
|  | 498 |  | 
|  | 499 | /** | 
|  | 500 | *	ali_init_one		-	discovery callback | 
|  | 501 | *	@pdev: PCI device ID | 
|  | 502 | *	@id: PCI table info | 
|  | 503 | * | 
|  | 504 | *	An ALi IDE interface has been discovered. Figure out what revision | 
|  | 505 | *	and perform configuration work before handing it to the ATA layer | 
|  | 506 | */ | 
|  | 507 |  | 
|  | 508 | static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id) | 
|  | 509 | { | 
|  | 510 | static struct ata_port_info info_early = { | 
|  | 511 | .sht = &ali_sht, | 
|  | 512 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, | 
|  | 513 | .pio_mask = 0x1f, | 
|  | 514 | .port_ops = &ali_early_port_ops | 
|  | 515 | }; | 
|  | 516 | /* Revision 0x20 added DMA */ | 
|  | 517 | static struct ata_port_info info_20 = { | 
|  | 518 | .sht = &ali_sht, | 
|  | 519 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, | 
|  | 520 | .pio_mask = 0x1f, | 
|  | 521 | .mwdma_mask = 0x07, | 
|  | 522 | .port_ops = &ali_20_port_ops | 
|  | 523 | }; | 
|  | 524 | /* Revision 0x20 with support logic added UDMA */ | 
|  | 525 | static struct ata_port_info info_20_udma = { | 
|  | 526 | .sht = &ali_sht, | 
|  | 527 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, | 
|  | 528 | .pio_mask = 0x1f, | 
| Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 529 | .mwdma_mask = 0x07, | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 530 | .udma_mask = 0x07,	/* UDMA33 */ | 
|  | 531 | .port_ops = &ali_20_port_ops | 
|  | 532 | }; | 
|  | 533 | /* Revision 0xC2 adds UDMA66 */ | 
|  | 534 | static struct ata_port_info info_c2 = { | 
|  | 535 | .sht = &ali_sht, | 
|  | 536 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, | 
|  | 537 | .pio_mask = 0x1f, | 
|  | 538 | .mwdma_mask = 0x07, | 
|  | 539 | .udma_mask = 0x1f, | 
|  | 540 | .port_ops = &ali_c2_port_ops | 
|  | 541 | }; | 
|  | 542 | /* Revision 0xC3 is UDMA100 */ | 
|  | 543 | static struct ata_port_info info_c3 = { | 
|  | 544 | .sht = &ali_sht, | 
|  | 545 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, | 
|  | 546 | .pio_mask = 0x1f, | 
|  | 547 | .mwdma_mask = 0x07, | 
|  | 548 | .udma_mask = 0x3f, | 
|  | 549 | .port_ops = &ali_c2_port_ops | 
|  | 550 | }; | 
|  | 551 | /* Revision 0xC4 is UDMA133 */ | 
|  | 552 | static struct ata_port_info info_c4 = { | 
|  | 553 | .sht = &ali_sht, | 
|  | 554 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, | 
|  | 555 | .pio_mask = 0x1f, | 
|  | 556 | .mwdma_mask = 0x07, | 
|  | 557 | .udma_mask = 0x7f, | 
|  | 558 | .port_ops = &ali_c2_port_ops | 
|  | 559 | }; | 
|  | 560 | /* Revision 0xC5 is UDMA133 with LBA48 DMA */ | 
|  | 561 | static struct ata_port_info info_c5 = { | 
|  | 562 | .sht = &ali_sht, | 
|  | 563 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, | 
|  | 564 | .pio_mask = 0x1f, | 
|  | 565 | .mwdma_mask = 0x07, | 
|  | 566 | .udma_mask = 0x7f, | 
|  | 567 | .port_ops = &ali_c5_port_ops | 
|  | 568 | }; | 
|  | 569 |  | 
|  | 570 | static struct ata_port_info *port_info[2]; | 
|  | 571 | u8 rev, tmp; | 
|  | 572 | struct pci_dev *north, *isa_bridge; | 
|  | 573 |  | 
|  | 574 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); | 
|  | 575 |  | 
|  | 576 | /* | 
|  | 577 | * The chipset revision selects the driver operations and | 
|  | 578 | * mode data. | 
|  | 579 | */ | 
|  | 580 |  | 
|  | 581 | if (rev < 0x20) { | 
|  | 582 | port_info[0] = port_info[1] = &info_early; | 
|  | 583 | } else if (rev < 0xC2) { | 
|  | 584 | /* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */ | 
|  | 585 | pci_read_config_byte(pdev, 0x4B, &tmp); | 
|  | 586 | /* Clear CD-ROM DMA write bit */ | 
|  | 587 | tmp &= 0x7F; | 
|  | 588 | pci_write_config_byte(pdev, 0x4B, tmp); | 
|  | 589 | port_info[0] = port_info[1] = &info_20; | 
|  | 590 | } else if (rev == 0xC2) { | 
|  | 591 | port_info[0] = port_info[1] = &info_c2; | 
|  | 592 | } else if (rev == 0xC3) { | 
|  | 593 | port_info[0] = port_info[1] = &info_c3; | 
|  | 594 | } else if (rev == 0xC4) { | 
|  | 595 | port_info[0] = port_info[1] = &info_c4; | 
|  | 596 | } else | 
|  | 597 | port_info[0] = port_info[1] = &info_c5; | 
|  | 598 |  | 
|  | 599 | if (rev >= 0xC2) { | 
|  | 600 | /* Enable cable detection logic */ | 
|  | 601 | pci_read_config_byte(pdev, 0x4B, &tmp); | 
|  | 602 | pci_write_config_byte(pdev, 0x4B, tmp | 0x08); | 
|  | 603 | } | 
|  | 604 |  | 
|  | 605 | north = pci_get_slot(pdev->bus, PCI_DEVFN(0,0)); | 
|  | 606 | isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); | 
|  | 607 |  | 
|  | 608 | if (north && north->vendor == PCI_VENDOR_ID_AL) { | 
|  | 609 | /* Configure the ALi bridge logic. For non ALi rely on BIOS. | 
|  | 610 | Set the south bridge enable bit */ | 
|  | 611 | pci_read_config_byte(isa_bridge, 0x79, &tmp); | 
|  | 612 | if (rev == 0xC2) | 
|  | 613 | pci_write_config_byte(isa_bridge, 0x79, tmp | 0x04); | 
|  | 614 | else if (rev > 0xC2) | 
|  | 615 | pci_write_config_byte(isa_bridge, 0x79, tmp | 0x02); | 
|  | 616 | } | 
|  | 617 |  | 
|  | 618 | if (rev >= 0x20) { | 
|  | 619 | if (rev < 0xC2) { | 
|  | 620 | /* Are we paired with a UDMA capable chip */ | 
|  | 621 | pci_read_config_byte(isa_bridge, 0x5E, &tmp); | 
|  | 622 | if ((tmp & 0x1E) == 0x12) | 
|  | 623 | port_info[0] = port_info[1] = &info_20_udma; | 
|  | 624 | } | 
|  | 625 | /* | 
|  | 626 | * CD_ROM DMA on (0x53 bit 0). Enable this even if we want | 
|  | 627 | * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control | 
|  | 628 | * via 0x54/55. | 
|  | 629 | */ | 
|  | 630 | pci_read_config_byte(pdev, 0x53, &tmp); | 
|  | 631 | if (rev <= 0x20) | 
|  | 632 | tmp &= ~0x02; | 
| Alan Cox | a0a00cb | 2006-10-04 12:47:14 +0100 | [diff] [blame] | 633 | if (rev >= 0xc7) | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 634 | tmp |= 0x03; | 
|  | 635 | else | 
|  | 636 | tmp |= 0x01;	/* CD_ROM enable for DMA */ | 
|  | 637 | pci_write_config_byte(pdev, 0x53, tmp); | 
|  | 638 | } | 
|  | 639 |  | 
|  | 640 | pci_dev_put(isa_bridge); | 
|  | 641 | pci_dev_put(north); | 
|  | 642 |  | 
|  | 643 | ata_pci_clear_simplex(pdev); | 
|  | 644 | return ata_pci_init_one(pdev, port_info, 2); | 
|  | 645 | } | 
|  | 646 |  | 
| Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 647 | static const struct pci_device_id ali[] = { | 
|  | 648 | { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), }, | 
|  | 649 | { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), }, | 
|  | 650 |  | 
|  | 651 | { }, | 
| Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 652 | }; | 
|  | 653 |  | 
|  | 654 | static struct pci_driver ali_pci_driver = { | 
|  | 655 | .name 		= DRV_NAME, | 
|  | 656 | .id_table	= ali, | 
|  | 657 | .probe 		= ali_init_one, | 
|  | 658 | .remove		= ata_pci_remove_one | 
|  | 659 | }; | 
|  | 660 |  | 
|  | 661 | static int __init ali_init(void) | 
|  | 662 | { | 
|  | 663 | return pci_register_driver(&ali_pci_driver); | 
|  | 664 | } | 
|  | 665 |  | 
|  | 666 |  | 
|  | 667 | static void __exit ali_exit(void) | 
|  | 668 | { | 
|  | 669 | pci_unregister_driver(&ali_pci_driver); | 
|  | 670 | } | 
|  | 671 |  | 
|  | 672 |  | 
|  | 673 | MODULE_AUTHOR("Alan Cox"); | 
|  | 674 | MODULE_DESCRIPTION("low-level driver for ALi PATA"); | 
|  | 675 | MODULE_LICENSE("GPL"); | 
|  | 676 | MODULE_DEVICE_TABLE(pci, ali); | 
|  | 677 | MODULE_VERSION(DRV_VERSION); | 
|  | 678 |  | 
|  | 679 | module_init(ali_init); | 
|  | 680 | module_exit(ali_exit); |