Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 1 | /* |
| 2 | * pata_via.c - VIA PATA for new ATA layer |
| 3 | * (C) 2005-2006 Red Hat Inc |
| 4 | * Alan Cox <alan@redhat.com> |
| 5 | * |
| 6 | * Documentation |
| 7 | * Most chipset documentation available under NDA only |
| 8 | * |
| 9 | * VIA version guide |
| 10 | * VIA VT82C561 - early design, uses ata_generic currently |
| 11 | * VIA VT82C576 - MWDMA, 33Mhz |
| 12 | * VIA VT82C586 - MWDMA, 33Mhz |
| 13 | * VIA VT82C586a - Added UDMA to 33Mhz |
| 14 | * VIA VT82C586b - UDMA33 |
| 15 | * VIA VT82C596a - Nonfunctional UDMA66 |
| 16 | * VIA VT82C596b - Working UDMA66 |
| 17 | * VIA VT82C686 - Nonfunctional UDMA66 |
| 18 | * VIA VT82C686a - Working UDMA66 |
| 19 | * VIA VT82C686b - Updated to UDMA100 |
| 20 | * VIA VT8231 - UDMA100 |
| 21 | * VIA VT8233 - UDMA100 |
| 22 | * VIA VT8233a - UDMA133 |
| 23 | * VIA VT8233c - UDMA100 |
| 24 | * VIA VT8235 - UDMA133 |
| 25 | * VIA VT8237 - UDMA133 |
Alan | 05c39e5 | 2007-01-31 17:14:38 +0000 | [diff] [blame] | 26 | * VIA VT8237S - UDMA133 |
Alan | 75f609d | 2006-12-04 16:38:25 +0000 | [diff] [blame] | 27 | * VIA VT8251 - UDMA133 |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 28 | * |
| 29 | * Most registers remain compatible across chips. Others start reserved |
| 30 | * and acquire sensible semantics if set to 1 (eg cable detect). A few |
| 31 | * exceptions exist, notably around the FIFO settings. |
| 32 | * |
| 33 | * One additional quirk of the VIA design is that like ALi they use few |
| 34 | * PCI IDs for a lot of chips. |
| 35 | * |
| 36 | * Based heavily on: |
| 37 | * |
| 38 | * Version 3.38 |
| 39 | * |
| 40 | * VIA IDE driver for Linux. Supported southbridges: |
| 41 | * |
| 42 | * vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b, |
| 43 | * vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a, |
| 44 | * vt8235, vt8237 |
| 45 | * |
| 46 | * Copyright (c) 2000-2002 Vojtech Pavlik |
| 47 | * |
| 48 | * Based on the work of: |
| 49 | * Michel Aubry |
| 50 | * Jeff Garzik |
| 51 | * Andre Hedrick |
| 52 | |
| 53 | */ |
| 54 | |
| 55 | #include <linux/kernel.h> |
| 56 | #include <linux/module.h> |
| 57 | #include <linux/pci.h> |
| 58 | #include <linux/init.h> |
| 59 | #include <linux/blkdev.h> |
| 60 | #include <linux/delay.h> |
| 61 | #include <scsi/scsi_host.h> |
| 62 | #include <linux/libata.h> |
Alan Cox | cf5792d | 2007-05-23 22:39:01 +0100 | [diff] [blame] | 63 | #include <linux/dmi.h> |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 64 | |
| 65 | #define DRV_NAME "pata_via" |
Bartlomiej Zolnierkiewicz | 943547a | 2007-12-02 03:47:01 +0100 | [diff] [blame] | 66 | #define DRV_VERSION "0.3.3" |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 67 | |
| 68 | /* |
| 69 | * The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx |
| 70 | * driver. |
| 71 | */ |
| 72 | |
| 73 | enum { |
| 74 | VIA_UDMA = 0x007, |
| 75 | VIA_UDMA_NONE = 0x000, |
| 76 | VIA_UDMA_33 = 0x001, |
| 77 | VIA_UDMA_66 = 0x002, |
| 78 | VIA_UDMA_100 = 0x003, |
| 79 | VIA_UDMA_133 = 0x004, |
| 80 | VIA_BAD_PREQ = 0x010, /* Crashes if PREQ# till DDACK# set */ |
| 81 | VIA_BAD_CLK66 = 0x020, /* 66 MHz clock doesn't work correctly */ |
| 82 | VIA_SET_FIFO = 0x040, /* Needs to have FIFO split set */ |
| 83 | VIA_NO_UNMASK = 0x080, /* Doesn't work with IRQ unmasking on */ |
| 84 | VIA_BAD_ID = 0x100, /* Has wrong vendor ID (0x1107) */ |
| 85 | VIA_BAD_AST = 0x200, /* Don't touch Address Setup Timing */ |
| 86 | VIA_NO_ENABLES = 0x400, /* Has no enablebits */ |
Tejun Heo | 7585eb1 | 2008-02-07 10:18:53 +0900 | [diff] [blame] | 87 | VIA_SATA_PATA = 0x800, /* SATA/PATA combined configuration */ |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | /* |
| 91 | * VIA SouthBridge chips. |
| 92 | */ |
| 93 | |
| 94 | static const struct via_isa_bridge { |
| 95 | const char *name; |
| 96 | u16 id; |
| 97 | u8 rev_min; |
| 98 | u8 rev_max; |
| 99 | u16 flags; |
| 100 | } via_isa_bridges[] = { |
Joseph Chan | b311ec4 | 2007-09-10 22:06:01 -0400 | [diff] [blame] | 101 | { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Josepch Chan | e0b874d | 2007-01-27 13:47:08 +0100 | [diff] [blame] | 102 | { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Alan | 75f609d | 2006-12-04 16:38:25 +0000 | [diff] [blame] | 103 | { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Tejun Heo | 7585eb1 | 2008-02-07 10:18:53 +0900 | [diff] [blame] | 104 | { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST | VIA_SATA_PATA }, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 105 | { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST | VIA_NO_ENABLES}, |
| 106 | { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
| 107 | { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
| 108 | { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
| 109 | { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
| 110 | { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, VIA_UDMA_100 }, |
| 111 | { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, VIA_UDMA_100 }, |
| 112 | { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, VIA_UDMA_100 }, |
| 113 | { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, VIA_UDMA_100 }, |
| 114 | { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, VIA_UDMA_66 }, |
| 115 | { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, |
| 116 | { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, VIA_UDMA_66 }, |
| 117 | { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, |
| 118 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, VIA_UDMA_33 | VIA_SET_FIFO }, |
| 119 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, VIA_UDMA_33 | VIA_SET_FIFO | VIA_BAD_PREQ }, |
| 120 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, VIA_UDMA_33 | VIA_SET_FIFO }, |
| 121 | { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, VIA_UDMA_33 | VIA_SET_FIFO }, |
| 122 | { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, VIA_UDMA_NONE | VIA_SET_FIFO }, |
| 123 | { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK }, |
| 124 | { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID }, |
| 125 | { NULL } |
| 126 | }; |
| 127 | |
Alan Cox | cf5792d | 2007-05-23 22:39:01 +0100 | [diff] [blame] | 128 | |
| 129 | /* |
| 130 | * Cable special cases |
| 131 | */ |
| 132 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 133 | static const struct dmi_system_id cable_dmi_table[] = { |
Alan Cox | cf5792d | 2007-05-23 22:39:01 +0100 | [diff] [blame] | 134 | { |
| 135 | .ident = "Acer Ferrari 3400", |
| 136 | .matches = { |
| 137 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."), |
| 138 | DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"), |
| 139 | }, |
| 140 | }, |
| 141 | { } |
| 142 | }; |
| 143 | |
| 144 | static int via_cable_override(struct pci_dev *pdev) |
| 145 | { |
| 146 | /* Systems by DMI */ |
| 147 | if (dmi_check_system(cable_dmi_table)) |
| 148 | return 1; |
Alan Cox | 9edbdbe | 2007-08-22 22:57:48 +0100 | [diff] [blame] | 149 | /* Arima W730-K8/Targa Visionary 811/... */ |
| 150 | if (pdev->subsystem_vendor == 0x161F && pdev->subsystem_device == 0x2032) |
| 151 | return 1; |
Alan Cox | cf5792d | 2007-05-23 22:39:01 +0100 | [diff] [blame] | 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 156 | /** |
| 157 | * via_cable_detect - cable detection |
| 158 | * @ap: ATA port |
| 159 | * |
| 160 | * Perform cable detection. Actually for the VIA case the BIOS |
| 161 | * already did this for us. We read the values provided by the |
| 162 | * BIOS. If you are using an 8235 in a non-PC configuration you |
| 163 | * may need to update this code. |
| 164 | * |
| 165 | * Hotplug also impacts on this. |
| 166 | */ |
| 167 | |
| 168 | static int via_cable_detect(struct ata_port *ap) { |
Alan Cox | 97cb81c | 2007-03-07 16:56:54 +0000 | [diff] [blame] | 169 | const struct via_isa_bridge *config = ap->host->private_data; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 170 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 171 | u32 ata66; |
| 172 | |
Alan Cox | cf5792d | 2007-05-23 22:39:01 +0100 | [diff] [blame] | 173 | if (via_cable_override(pdev)) |
| 174 | return ATA_CBL_PATA40_SHORT; |
| 175 | |
Tejun Heo | 7585eb1 | 2008-02-07 10:18:53 +0900 | [diff] [blame] | 176 | if ((config->flags & VIA_SATA_PATA) && ap->port_no == 0) |
| 177 | return ATA_CBL_SATA; |
| 178 | |
Alan Cox | 97cb81c | 2007-03-07 16:56:54 +0000 | [diff] [blame] | 179 | /* Early chips are 40 wire */ |
| 180 | if ((config->flags & VIA_UDMA) < VIA_UDMA_66) |
| 181 | return ATA_CBL_PATA40; |
| 182 | /* UDMA 66 chips have only drive side logic */ |
Jeff Garzik | b447916 | 2007-10-25 20:47:30 -0400 | [diff] [blame] | 183 | else if ((config->flags & VIA_UDMA) < VIA_UDMA_100) |
Alan Cox | 97cb81c | 2007-03-07 16:56:54 +0000 | [diff] [blame] | 184 | return ATA_CBL_PATA_UNK; |
| 185 | /* UDMA 100 or later */ |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 186 | pci_read_config_dword(pdev, 0x50, &ata66); |
| 187 | /* Check both the drive cable reporting bits, we might not have |
| 188 | two drives */ |
| 189 | if (ata66 & (0x10100000 >> (16 * ap->port_no))) |
| 190 | return ATA_CBL_PATA80; |
Alan Cox | 7d73a36 | 2007-07-26 18:38:06 +0100 | [diff] [blame] | 191 | /* Check with ACPI so we can spot BIOS reported SATA bridges */ |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 192 | if (ata_acpi_init_gtm(ap) && |
| 193 | ata_acpi_cbl_80wire(ap, ata_acpi_init_gtm(ap))) |
Alan Cox | 7d73a36 | 2007-07-26 18:38:06 +0100 | [diff] [blame] | 194 | return ATA_CBL_PATA80; |
Alan Cox | 97cb81c | 2007-03-07 16:56:54 +0000 | [diff] [blame] | 195 | return ATA_CBL_PATA40; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 196 | } |
| 197 | |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 198 | static int via_pre_reset(struct ata_link *link, unsigned long deadline) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 199 | { |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 200 | struct ata_port *ap = link->ap; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 201 | const struct via_isa_bridge *config = ap->host->private_data; |
| 202 | |
| 203 | if (!(config->flags & VIA_NO_ENABLES)) { |
| 204 | static const struct pci_bits via_enable_bits[] = { |
| 205 | { 0x40, 1, 0x02, 0x02 }, |
| 206 | { 0x40, 1, 0x01, 0x01 } |
| 207 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 208 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
Alan Cox | c961922 | 2006-09-26 17:53:38 +0100 | [diff] [blame] | 209 | if (!pci_test_config_bits(pdev, &via_enable_bits[ap->port_no])) |
| 210 | return -ENOENT; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 211 | } |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 212 | |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 213 | return ata_sff_prereset(link, deadline); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | |
| 217 | /** |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 218 | * via_do_set_mode - set initial PIO mode data |
| 219 | * @ap: ATA interface |
| 220 | * @adev: ATA device |
| 221 | * @mode: ATA mode being programmed |
| 222 | * @tdiv: Clocks per PCI clock |
| 223 | * @set_ast: Set to program address setup |
| 224 | * @udma_type: UDMA mode/format of registers |
| 225 | * |
| 226 | * Program the VIA registers for DMA and PIO modes. Uses the ata timing |
| 227 | * support in order to compute modes. |
| 228 | * |
| 229 | * FIXME: Hotplug will require we serialize multiple mode changes |
| 230 | * on the two channels. |
| 231 | */ |
| 232 | |
| 233 | static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mode, int tdiv, int set_ast, int udma_type) |
| 234 | { |
| 235 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 236 | struct ata_device *peer = ata_dev_pair(adev); |
| 237 | struct ata_timing t, p; |
| 238 | static int via_clock = 33333; /* Bus clock in kHZ - ought to be tunable one day */ |
| 239 | unsigned long T = 1000000000 / via_clock; |
| 240 | unsigned long UT = T/tdiv; |
| 241 | int ut; |
| 242 | int offset = 3 - (2*ap->port_no) - adev->devno; |
| 243 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 244 | /* Calculate the timing values we require */ |
| 245 | ata_timing_compute(adev, mode, &t, T, UT); |
| 246 | |
| 247 | /* We share 8bit timing so we must merge the constraints */ |
| 248 | if (peer) { |
| 249 | if (peer->pio_mode) { |
| 250 | ata_timing_compute(peer, peer->pio_mode, &p, T, UT); |
| 251 | ata_timing_merge(&p, &t, &t, ATA_TIMING_8BIT); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | /* Address setup is programmable but breaks on UDMA133 setups */ |
| 256 | if (set_ast) { |
| 257 | u8 setup; /* 2 bits per drive */ |
| 258 | int shift = 2 * offset; |
| 259 | |
| 260 | pci_read_config_byte(pdev, 0x4C, &setup); |
| 261 | setup &= ~(3 << shift); |
| 262 | setup |= FIT(t.setup, 1, 4) << shift; /* 1,4 or 1,4 - 1 FIXME */ |
| 263 | pci_write_config_byte(pdev, 0x4C, setup); |
| 264 | } |
| 265 | |
| 266 | /* Load the PIO mode bits */ |
| 267 | pci_write_config_byte(pdev, 0x4F - ap->port_no, |
| 268 | ((FIT(t.act8b, 1, 16) - 1) << 4) | (FIT(t.rec8b, 1, 16) - 1)); |
| 269 | pci_write_config_byte(pdev, 0x48 + offset, |
| 270 | ((FIT(t.active, 1, 16) - 1) << 4) | (FIT(t.recover, 1, 16) - 1)); |
| 271 | |
| 272 | /* Load the UDMA bits according to type */ |
| 273 | switch(udma_type) { |
| 274 | default: |
| 275 | /* BUG() ? */ |
| 276 | /* fall through */ |
| 277 | case 33: |
| 278 | ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 5) - 2)) : 0x03; |
| 279 | break; |
| 280 | case 66: |
| 281 | ut = t.udma ? (0xe8 | (FIT(t.udma, 2, 9) - 2)) : 0x0f; |
| 282 | break; |
| 283 | case 100: |
| 284 | ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07; |
| 285 | break; |
| 286 | case 133: |
| 287 | ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07; |
| 288 | break; |
| 289 | } |
Laurent Riffard | 08ebd43 | 2007-09-02 21:01:32 +0200 | [diff] [blame] | 290 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 291 | /* Set UDMA unless device is not UDMA capable */ |
Bartlomiej Zolnierkiewicz | 943547a | 2007-12-02 03:47:01 +0100 | [diff] [blame] | 292 | if (udma_type && t.udma) { |
Laurent Riffard | 08ebd43 | 2007-09-02 21:01:32 +0200 | [diff] [blame] | 293 | u8 cable80_status; |
| 294 | |
| 295 | /* Get 80-wire cable detection bit */ |
| 296 | pci_read_config_byte(pdev, 0x50 + offset, &cable80_status); |
| 297 | cable80_status &= 0x10; |
| 298 | |
| 299 | pci_write_config_byte(pdev, 0x50 + offset, ut | cable80_status); |
| 300 | } |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | static void via_set_piomode(struct ata_port *ap, struct ata_device *adev) |
| 304 | { |
| 305 | const struct via_isa_bridge *config = ap->host->private_data; |
| 306 | int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1; |
| 307 | int mode = config->flags & VIA_UDMA; |
| 308 | static u8 tclock[5] = { 1, 1, 2, 3, 4 }; |
| 309 | static u8 udma[5] = { 0, 33, 66, 100, 133 }; |
| 310 | |
| 311 | via_do_set_mode(ap, adev, adev->pio_mode, tclock[mode], set_ast, udma[mode]); |
| 312 | } |
| 313 | |
| 314 | static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
| 315 | { |
| 316 | const struct via_isa_bridge *config = ap->host->private_data; |
| 317 | int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1; |
| 318 | int mode = config->flags & VIA_UDMA; |
| 319 | static u8 tclock[5] = { 1, 1, 2, 3, 4 }; |
| 320 | static u8 udma[5] = { 0, 33, 66, 100, 133 }; |
| 321 | |
| 322 | via_do_set_mode(ap, adev, adev->dma_mode, tclock[mode], set_ast, udma[mode]); |
| 323 | } |
| 324 | |
| 325 | static struct scsi_host_template via_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 326 | ATA_BMDMA_SHT(DRV_NAME), |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 327 | }; |
| 328 | |
| 329 | static struct ata_port_operations via_port_ops = { |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 330 | .inherits = &ata_bmdma_port_ops, |
| 331 | .cable_detect = via_cable_detect, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 332 | .set_piomode = via_set_piomode, |
| 333 | .set_dmamode = via_set_dmamode, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 334 | .prereset = via_pre_reset, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 335 | }; |
| 336 | |
| 337 | static struct ata_port_operations via_port_ops_noirq = { |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 338 | .inherits = &via_port_ops, |
Tejun Heo | 5682ed3 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 339 | .sff_data_xfer = ata_sff_data_xfer_noirq, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 340 | }; |
| 341 | |
| 342 | /** |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 343 | * via_config_fifo - set up the FIFO |
| 344 | * @pdev: PCI device |
| 345 | * @flags: configuration flags |
| 346 | * |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 347 | * Set the FIFO properties for this device if necessary. Used both on |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 348 | * set up and on and the resume path |
| 349 | */ |
| 350 | |
| 351 | static void via_config_fifo(struct pci_dev *pdev, unsigned int flags) |
| 352 | { |
| 353 | u8 enable; |
Jeff Garzik | f20b16f | 2006-12-11 11:14:06 -0500 | [diff] [blame] | 354 | |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 355 | /* 0x40 low bits indicate enabled channels */ |
| 356 | pci_read_config_byte(pdev, 0x40 , &enable); |
| 357 | enable &= 3; |
Jeff Garzik | f20b16f | 2006-12-11 11:14:06 -0500 | [diff] [blame] | 358 | |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 359 | if (flags & VIA_SET_FIFO) { |
Andrew Morton | 7372086 | 2006-12-20 13:09:10 -0500 | [diff] [blame] | 360 | static const u8 fifo_setting[4] = {0x00, 0x60, 0x00, 0x20}; |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 361 | u8 fifo; |
| 362 | |
| 363 | pci_read_config_byte(pdev, 0x43, &fifo); |
| 364 | |
| 365 | /* Clear PREQ# until DDACK# for errata */ |
| 366 | if (flags & VIA_BAD_PREQ) |
| 367 | fifo &= 0x7F; |
| 368 | else |
| 369 | fifo &= 0x9f; |
| 370 | /* Turn on FIFO for enabled channels */ |
| 371 | fifo |= fifo_setting[enable]; |
| 372 | pci_write_config_byte(pdev, 0x43, fifo); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | /** |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 377 | * via_init_one - discovery callback |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 378 | * @pdev: PCI device |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 379 | * @id: PCI table info |
| 380 | * |
| 381 | * A VIA IDE interface has been discovered. Figure out what revision |
| 382 | * and perform configuration work before handing it to the ATA layer |
| 383 | */ |
| 384 | |
| 385 | static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) |
| 386 | { |
| 387 | /* Early VIA without UDMA support */ |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 388 | static const struct ata_port_info via_mwdma_info = { |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 389 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 390 | .pio_mask = 0x1f, |
| 391 | .mwdma_mask = 0x07, |
| 392 | .port_ops = &via_port_ops |
| 393 | }; |
| 394 | /* Ditto with IRQ masking required */ |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 395 | static const struct ata_port_info via_mwdma_info_borked = { |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 396 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 397 | .pio_mask = 0x1f, |
| 398 | .mwdma_mask = 0x07, |
| 399 | .port_ops = &via_port_ops_noirq, |
| 400 | }; |
| 401 | /* VIA UDMA 33 devices (and borked 66) */ |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 402 | static const struct ata_port_info via_udma33_info = { |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 403 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 404 | .pio_mask = 0x1f, |
| 405 | .mwdma_mask = 0x07, |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 406 | .udma_mask = ATA_UDMA2, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 407 | .port_ops = &via_port_ops |
| 408 | }; |
| 409 | /* VIA UDMA 66 devices */ |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 410 | static const struct ata_port_info via_udma66_info = { |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 411 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 412 | .pio_mask = 0x1f, |
| 413 | .mwdma_mask = 0x07, |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 414 | .udma_mask = ATA_UDMA4, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 415 | .port_ops = &via_port_ops |
| 416 | }; |
| 417 | /* VIA UDMA 100 devices */ |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 418 | static const struct ata_port_info via_udma100_info = { |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 419 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 420 | .pio_mask = 0x1f, |
| 421 | .mwdma_mask = 0x07, |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 422 | .udma_mask = ATA_UDMA5, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 423 | .port_ops = &via_port_ops |
| 424 | }; |
| 425 | /* UDMA133 with bad AST (All current 133) */ |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 426 | static const struct ata_port_info via_udma133_info = { |
Tejun Heo | 464cf17 | 2007-05-27 15:10:40 +0200 | [diff] [blame] | 427 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 428 | .pio_mask = 0x1f, |
| 429 | .mwdma_mask = 0x07, |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 430 | .udma_mask = ATA_UDMA6, /* FIXME: should check north bridge */ |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 431 | .port_ops = &via_port_ops |
| 432 | }; |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 433 | const struct ata_port_info *ppi[] = { NULL, NULL }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 434 | struct pci_dev *isa = NULL; |
| 435 | const struct via_isa_bridge *config; |
| 436 | static int printed_version; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 437 | u8 enable; |
| 438 | u32 timing; |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 439 | int rc; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 440 | |
| 441 | if (!printed_version++) |
| 442 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
| 443 | |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 444 | rc = pcim_enable_device(pdev); |
| 445 | if (rc) |
| 446 | return rc; |
| 447 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 448 | /* To find out how the IDE will behave and what features we |
| 449 | actually have to look at the bridge not the IDE controller */ |
| 450 | for (config = via_isa_bridges; config->id; config++) |
| 451 | if ((isa = pci_get_device(PCI_VENDOR_ID_VIA + |
| 452 | !!(config->flags & VIA_BAD_ID), |
| 453 | config->id, NULL))) { |
| 454 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 455 | if (isa->revision >= config->rev_min && |
| 456 | isa->revision <= config->rev_max) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 457 | break; |
| 458 | pci_dev_put(isa); |
| 459 | } |
| 460 | |
| 461 | if (!config->id) { |
| 462 | printk(KERN_WARNING "via: Unknown VIA SouthBridge, disabling.\n"); |
| 463 | return -ENODEV; |
| 464 | } |
| 465 | pci_dev_put(isa); |
| 466 | |
Alan Cox | 11f6400 | 2008-04-29 14:10:57 +0100 | [diff] [blame^] | 467 | if (!(config->flags & VIA_NO_ENABLES)) { |
| 468 | /* 0x40 low bits indicate enabled channels */ |
| 469 | pci_read_config_byte(pdev, 0x40 , &enable); |
| 470 | enable &= 3; |
| 471 | if (enable == 0) |
| 472 | return -ENODEV; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | /* Initialise the FIFO for the enabled channels. */ |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 476 | via_config_fifo(pdev, config->flags); |
Jeff Garzik | f20b16f | 2006-12-11 11:14:06 -0500 | [diff] [blame] | 477 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 478 | /* Clock set up */ |
| 479 | switch(config->flags & VIA_UDMA) { |
| 480 | case VIA_UDMA_NONE: |
| 481 | if (config->flags & VIA_NO_UNMASK) |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 482 | ppi[0] = &via_mwdma_info_borked; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 483 | else |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 484 | ppi[0] = &via_mwdma_info; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 485 | break; |
| 486 | case VIA_UDMA_33: |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 487 | ppi[0] = &via_udma33_info; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 488 | break; |
| 489 | case VIA_UDMA_66: |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 490 | ppi[0] = &via_udma66_info; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 491 | /* The 66 MHz devices require we enable the clock */ |
| 492 | pci_read_config_dword(pdev, 0x50, &timing); |
| 493 | timing |= 0x80008; |
| 494 | pci_write_config_dword(pdev, 0x50, timing); |
| 495 | break; |
| 496 | case VIA_UDMA_100: |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 497 | ppi[0] = &via_udma100_info; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 498 | break; |
| 499 | case VIA_UDMA_133: |
Tejun Heo | 887125e | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 500 | ppi[0] = &via_udma133_info; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 501 | break; |
| 502 | default: |
| 503 | WARN_ON(1); |
| 504 | return -ENODEV; |
| 505 | } |
| 506 | |
| 507 | if (config->flags & VIA_BAD_CLK66) { |
| 508 | /* Disable the 66MHz clock on problem devices */ |
| 509 | pci_read_config_dword(pdev, 0x50, &timing); |
| 510 | timing &= ~0x80008; |
| 511 | pci_write_config_dword(pdev, 0x50, timing); |
| 512 | } |
| 513 | |
| 514 | /* We have established the device type, now fire it up */ |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 515 | return ata_pci_sff_init_one(pdev, ppi, &via_sht, (void *)config); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 516 | } |
| 517 | |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 518 | #ifdef CONFIG_PM |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 519 | /** |
| 520 | * via_reinit_one - reinit after resume |
| 521 | * @pdev; PCI device |
| 522 | * |
| 523 | * Called when the VIA PATA device is resumed. We must then |
| 524 | * reconfigure the fifo and other setup we may have altered. In |
| 525 | * addition the kernel needs to have the resume methods on PCI |
| 526 | * quirk supported. |
| 527 | */ |
| 528 | |
| 529 | static int via_reinit_one(struct pci_dev *pdev) |
| 530 | { |
| 531 | u32 timing; |
| 532 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
| 533 | const struct via_isa_bridge *config = host->private_data; |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 534 | int rc; |
| 535 | |
| 536 | rc = ata_pci_device_do_resume(pdev); |
| 537 | if (rc) |
| 538 | return rc; |
Jeff Garzik | f20b16f | 2006-12-11 11:14:06 -0500 | [diff] [blame] | 539 | |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 540 | via_config_fifo(pdev, config->flags); |
| 541 | |
| 542 | if ((config->flags & VIA_UDMA) == VIA_UDMA_66) { |
| 543 | /* The 66 MHz devices require we enable the clock */ |
| 544 | pci_read_config_dword(pdev, 0x50, &timing); |
| 545 | timing |= 0x80008; |
| 546 | pci_write_config_dword(pdev, 0x50, timing); |
| 547 | } |
| 548 | if (config->flags & VIA_BAD_CLK66) { |
| 549 | /* Disable the 66MHz clock on problem devices */ |
| 550 | pci_read_config_dword(pdev, 0x50, &timing); |
| 551 | timing &= ~0x80008; |
| 552 | pci_write_config_dword(pdev, 0x50, timing); |
| 553 | } |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 554 | |
| 555 | ata_host_resume(host); |
| 556 | return 0; |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 557 | } |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 558 | #endif |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 559 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 560 | static const struct pci_device_id via[] = { |
Jeff Garzik | 52df0ee | 2007-05-25 05:02:06 -0400 | [diff] [blame] | 561 | { PCI_VDEVICE(VIA, 0x0571), }, |
| 562 | { PCI_VDEVICE(VIA, 0x0581), }, |
| 563 | { PCI_VDEVICE(VIA, 0x1571), }, |
| 564 | { PCI_VDEVICE(VIA, 0x3164), }, |
| 565 | { PCI_VDEVICE(VIA, 0x5324), }, |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 566 | |
| 567 | { }, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 568 | }; |
| 569 | |
| 570 | static struct pci_driver via_pci_driver = { |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 571 | .name = DRV_NAME, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 572 | .id_table = via, |
| 573 | .probe = via_init_one, |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 574 | .remove = ata_pci_remove_one, |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 575 | #ifdef CONFIG_PM |
Alan | 627d2d3 | 2006-11-27 16:19:36 +0000 | [diff] [blame] | 576 | .suspend = ata_pci_device_suspend, |
| 577 | .resume = via_reinit_one, |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 578 | #endif |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 579 | }; |
| 580 | |
| 581 | static int __init via_init(void) |
| 582 | { |
| 583 | return pci_register_driver(&via_pci_driver); |
| 584 | } |
| 585 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 586 | static void __exit via_exit(void) |
| 587 | { |
| 588 | pci_unregister_driver(&via_pci_driver); |
| 589 | } |
| 590 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 591 | MODULE_AUTHOR("Alan Cox"); |
| 592 | MODULE_DESCRIPTION("low-level driver for VIA PATA"); |
| 593 | MODULE_LICENSE("GPL"); |
| 594 | MODULE_DEVICE_TABLE(pci, via); |
| 595 | MODULE_VERSION(DRV_VERSION); |
| 596 | |
| 597 | module_init(via_init); |
| 598 | module_exit(via_exit); |