Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Support for IDE interfaces on Celleb platform |
| 3 | * |
| 4 | * (C) Copyright 2006 TOSHIBA CORPORATION |
| 5 | * |
| 6 | * This code is based on drivers/ide/pci/siimage.c: |
| 7 | * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org> |
| 8 | * Copyright (C) 2003 Red Hat <alan@redhat.com> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 23 | */ |
| 24 | |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/pci.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/hdreg.h> |
| 30 | #include <linux/ide.h> |
| 31 | #include <linux/init.h> |
| 32 | |
| 33 | #define PCI_DEVICE_ID_TOSHIBA_SCC_ATA 0x01b4 |
| 34 | |
| 35 | #define SCC_PATA_NAME "scc IDE" |
| 36 | |
| 37 | #define TDVHSEL_MASTER 0x00000001 |
| 38 | #define TDVHSEL_SLAVE 0x00000004 |
| 39 | |
| 40 | #define MODE_JCUSFEN 0x00000080 |
| 41 | |
| 42 | #define CCKCTRL_ATARESET 0x00040000 |
| 43 | #define CCKCTRL_BUFCNT 0x00020000 |
| 44 | #define CCKCTRL_CRST 0x00010000 |
| 45 | #define CCKCTRL_OCLKEN 0x00000100 |
| 46 | #define CCKCTRL_ATACLKOEN 0x00000002 |
| 47 | #define CCKCTRL_LCLKEN 0x00000001 |
| 48 | |
| 49 | #define QCHCD_IOS_SS 0x00000001 |
| 50 | |
| 51 | #define QCHSD_STPDIAG 0x00020000 |
| 52 | |
| 53 | #define INTMASK_MSK 0xD1000012 |
| 54 | #define INTSTS_SERROR 0x80000000 |
| 55 | #define INTSTS_PRERR 0x40000000 |
| 56 | #define INTSTS_RERR 0x10000000 |
| 57 | #define INTSTS_ICERR 0x01000000 |
| 58 | #define INTSTS_BMSINT 0x00000010 |
| 59 | #define INTSTS_BMHE 0x00000008 |
| 60 | #define INTSTS_IOIRQS 0x00000004 |
| 61 | #define INTSTS_INTRQ 0x00000002 |
| 62 | #define INTSTS_ACTEINT 0x00000001 |
| 63 | |
| 64 | #define ECMODE_VALUE 0x01 |
| 65 | |
| 66 | static struct scc_ports { |
| 67 | unsigned long ctl, dma; |
Bartlomiej Zolnierkiewicz | 589b062 | 2008-04-26 17:36:34 +0200 | [diff] [blame] | 68 | ide_hwif_t *hwif; /* for removing port from system */ |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 69 | } scc_ports[MAX_HWIFS]; |
| 70 | |
| 71 | /* PIO transfer mode table */ |
| 72 | /* JCHST */ |
| 73 | static unsigned long JCHSTtbl[2][7] = { |
| 74 | {0x0E, 0x05, 0x02, 0x03, 0x02, 0x00, 0x00}, /* 100MHz */ |
| 75 | {0x13, 0x07, 0x04, 0x04, 0x03, 0x00, 0x00} /* 133MHz */ |
| 76 | }; |
| 77 | |
| 78 | /* JCHHT */ |
| 79 | static unsigned long JCHHTtbl[2][7] = { |
| 80 | {0x0E, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00}, /* 100MHz */ |
| 81 | {0x13, 0x03, 0x03, 0x03, 0x03, 0x00, 0x00} /* 133MHz */ |
| 82 | }; |
| 83 | |
| 84 | /* JCHCT */ |
| 85 | static unsigned long JCHCTtbl[2][7] = { |
| 86 | {0x1D, 0x1D, 0x1C, 0x0B, 0x06, 0x00, 0x00}, /* 100MHz */ |
| 87 | {0x27, 0x26, 0x26, 0x0E, 0x09, 0x00, 0x00} /* 133MHz */ |
| 88 | }; |
| 89 | |
| 90 | |
| 91 | /* DMA transfer mode table */ |
| 92 | /* JCHDCTM/JCHDCTS */ |
| 93 | static unsigned long JCHDCTxtbl[2][7] = { |
| 94 | {0x0A, 0x06, 0x04, 0x03, 0x01, 0x00, 0x00}, /* 100MHz */ |
| 95 | {0x0E, 0x09, 0x06, 0x04, 0x02, 0x01, 0x00} /* 133MHz */ |
| 96 | }; |
| 97 | |
| 98 | /* JCSTWTM/JCSTWTS */ |
| 99 | static unsigned long JCSTWTxtbl[2][7] = { |
| 100 | {0x06, 0x04, 0x03, 0x02, 0x02, 0x02, 0x00}, /* 100MHz */ |
| 101 | {0x09, 0x06, 0x04, 0x02, 0x02, 0x02, 0x02} /* 133MHz */ |
| 102 | }; |
| 103 | |
| 104 | /* JCTSS */ |
| 105 | static unsigned long JCTSStbl[2][7] = { |
| 106 | {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x00}, /* 100MHz */ |
| 107 | {0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05} /* 133MHz */ |
| 108 | }; |
| 109 | |
| 110 | /* JCENVT */ |
| 111 | static unsigned long JCENVTtbl[2][7] = { |
| 112 | {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00}, /* 100MHz */ |
| 113 | {0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02} /* 133MHz */ |
| 114 | }; |
| 115 | |
| 116 | /* JCACTSELS/JCACTSELM */ |
| 117 | static unsigned long JCACTSELtbl[2][7] = { |
| 118 | {0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00}, /* 100MHz */ |
| 119 | {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01} /* 133MHz */ |
| 120 | }; |
| 121 | |
| 122 | |
| 123 | static u8 scc_ide_inb(unsigned long port) |
| 124 | { |
| 125 | u32 data = in_be32((void*)port); |
| 126 | return (u8)data; |
| 127 | } |
| 128 | |
| 129 | static u16 scc_ide_inw(unsigned long port) |
| 130 | { |
| 131 | u32 data = in_be32((void*)port); |
| 132 | return (u16)data; |
| 133 | } |
| 134 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 135 | static void scc_ide_insw(unsigned long port, void *addr, u32 count) |
| 136 | { |
| 137 | u16 *ptr = (u16 *)addr; |
| 138 | while (count--) { |
| 139 | *ptr++ = le16_to_cpu(in_be32((void*)port)); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | static void scc_ide_insl(unsigned long port, void *addr, u32 count) |
| 144 | { |
| 145 | u16 *ptr = (u16 *)addr; |
| 146 | while (count--) { |
| 147 | *ptr++ = le16_to_cpu(in_be32((void*)port)); |
| 148 | *ptr++ = le16_to_cpu(in_be32((void*)port)); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | static void scc_ide_outb(u8 addr, unsigned long port) |
| 153 | { |
| 154 | out_be32((void*)port, addr); |
| 155 | } |
| 156 | |
| 157 | static void scc_ide_outw(u16 addr, unsigned long port) |
| 158 | { |
| 159 | out_be32((void*)port, addr); |
| 160 | } |
| 161 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 162 | static void |
| 163 | scc_ide_outbsync(ide_drive_t * drive, u8 addr, unsigned long port) |
| 164 | { |
| 165 | ide_hwif_t *hwif = HWIF(drive); |
| 166 | |
| 167 | out_be32((void*)port, addr); |
Kumar Gala | f644d47 | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 168 | eieio(); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 169 | in_be32((void*)(hwif->dma_base + 0x01c)); |
Kumar Gala | f644d47 | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 170 | eieio(); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static void |
| 174 | scc_ide_outsw(unsigned long port, void *addr, u32 count) |
| 175 | { |
| 176 | u16 *ptr = (u16 *)addr; |
| 177 | while (count--) { |
| 178 | out_be32((void*)port, cpu_to_le16(*ptr++)); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | static void |
| 183 | scc_ide_outsl(unsigned long port, void *addr, u32 count) |
| 184 | { |
| 185 | u16 *ptr = (u16 *)addr; |
| 186 | while (count--) { |
| 187 | out_be32((void*)port, cpu_to_le16(*ptr++)); |
| 188 | out_be32((void*)port, cpu_to_le16(*ptr++)); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /** |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 193 | * scc_set_pio_mode - set host controller for PIO mode |
| 194 | * @drive: drive |
| 195 | * @pio: PIO mode number |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 196 | * |
| 197 | * Load the timing settings for this device mode into the |
| 198 | * controller. |
| 199 | */ |
| 200 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 201 | static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio) |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 202 | { |
| 203 | ide_hwif_t *hwif = HWIF(drive); |
| 204 | struct scc_ports *ports = ide_get_hwifdata(hwif); |
| 205 | unsigned long ctl_base = ports->ctl; |
| 206 | unsigned long cckctrl_port = ctl_base + 0xff0; |
| 207 | unsigned long piosht_port = ctl_base + 0x000; |
| 208 | unsigned long pioct_port = ctl_base + 0x004; |
| 209 | unsigned long reg; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 210 | int offset; |
| 211 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 212 | reg = in_be32((void __iomem *)cckctrl_port); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 213 | if (reg & CCKCTRL_ATACLKOEN) { |
| 214 | offset = 1; /* 133MHz */ |
| 215 | } else { |
| 216 | offset = 0; /* 100MHz */ |
| 217 | } |
Bartlomiej Zolnierkiewicz | 3fcece6 | 2007-08-01 23:46:46 +0200 | [diff] [blame] | 218 | reg = JCHSTtbl[offset][pio] << 16 | JCHHTtbl[offset][pio]; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 219 | out_be32((void __iomem *)piosht_port, reg); |
Bartlomiej Zolnierkiewicz | 3fcece6 | 2007-08-01 23:46:46 +0200 | [diff] [blame] | 220 | reg = JCHCTtbl[offset][pio]; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 221 | out_be32((void __iomem *)pioct_port, reg); |
Bartlomiej Zolnierkiewicz | 3fcece6 | 2007-08-01 23:46:46 +0200 | [diff] [blame] | 222 | } |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 223 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 224 | /** |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 225 | * scc_set_dma_mode - set host controller for DMA mode |
| 226 | * @drive: drive |
| 227 | * @speed: DMA mode |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 228 | * |
| 229 | * Load the timing settings for this device mode into the |
| 230 | * controller. |
| 231 | */ |
| 232 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 233 | static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed) |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 234 | { |
| 235 | ide_hwif_t *hwif = HWIF(drive); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 236 | struct scc_ports *ports = ide_get_hwifdata(hwif); |
| 237 | unsigned long ctl_base = ports->ctl; |
| 238 | unsigned long cckctrl_port = ctl_base + 0xff0; |
| 239 | unsigned long mdmact_port = ctl_base + 0x008; |
| 240 | unsigned long mcrcst_port = ctl_base + 0x00c; |
| 241 | unsigned long sdmact_port = ctl_base + 0x010; |
| 242 | unsigned long scrcst_port = ctl_base + 0x014; |
| 243 | unsigned long udenvt_port = ctl_base + 0x018; |
| 244 | unsigned long tdvhsel_port = ctl_base + 0x020; |
| 245 | int is_slave = (&hwif->drives[1] == drive); |
| 246 | int offset, idx; |
| 247 | unsigned long reg; |
| 248 | unsigned long jcactsel; |
| 249 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 250 | reg = in_be32((void __iomem *)cckctrl_port); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 251 | if (reg & CCKCTRL_ATACLKOEN) { |
| 252 | offset = 1; /* 133MHz */ |
| 253 | } else { |
| 254 | offset = 0; /* 100MHz */ |
| 255 | } |
| 256 | |
Bartlomiej Zolnierkiewicz | 4db90a1 | 2008-01-25 22:17:18 +0100 | [diff] [blame] | 257 | idx = speed - XFER_UDMA_0; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 258 | |
| 259 | jcactsel = JCACTSELtbl[offset][idx]; |
| 260 | if (is_slave) { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 261 | out_be32((void __iomem *)sdmact_port, JCHDCTxtbl[offset][idx]); |
| 262 | out_be32((void __iomem *)scrcst_port, JCSTWTxtbl[offset][idx]); |
| 263 | jcactsel = jcactsel << 2; |
| 264 | out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_SLAVE) | jcactsel); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 265 | } else { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 266 | out_be32((void __iomem *)mdmact_port, JCHDCTxtbl[offset][idx]); |
| 267 | out_be32((void __iomem *)mcrcst_port, JCSTWTxtbl[offset][idx]); |
| 268 | out_be32((void __iomem *)tdvhsel_port, (in_be32((void __iomem *)tdvhsel_port) & ~TDVHSEL_MASTER) | jcactsel); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 269 | } |
| 270 | reg = JCTSStbl[offset][idx] << 16 | JCENVTtbl[offset][idx]; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 271 | out_be32((void __iomem *)udenvt_port, reg); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | /** |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 275 | * scc_ide_dma_setup - begin a DMA phase |
| 276 | * @drive: target device |
| 277 | * |
| 278 | * Build an IDE DMA PRD (IDE speak for scatter gather table) |
| 279 | * and then set up the DMA transfer registers. |
| 280 | * |
| 281 | * Returns 0 on success. If a PIO fallback is required then 1 |
| 282 | * is returned. |
| 283 | */ |
| 284 | |
| 285 | static int scc_dma_setup(ide_drive_t *drive) |
| 286 | { |
| 287 | ide_hwif_t *hwif = drive->hwif; |
| 288 | struct request *rq = HWGROUP(drive)->rq; |
| 289 | unsigned int reading; |
| 290 | u8 dma_stat; |
| 291 | |
| 292 | if (rq_data_dir(rq)) |
| 293 | reading = 0; |
| 294 | else |
| 295 | reading = 1 << 3; |
| 296 | |
| 297 | /* fall back to pio! */ |
| 298 | if (!ide_build_dmatable(drive, rq)) { |
| 299 | ide_map_sg(drive, rq); |
| 300 | return 1; |
| 301 | } |
| 302 | |
| 303 | /* PRD table */ |
| 304 | out_be32((void __iomem *)hwif->dma_prdtable, hwif->dmatable_dma); |
| 305 | |
| 306 | /* specify r/w */ |
| 307 | out_be32((void __iomem *)hwif->dma_command, reading); |
| 308 | |
| 309 | /* read dma_status for INTR & ERROR flags */ |
| 310 | dma_stat = in_be32((void __iomem *)hwif->dma_status); |
| 311 | |
| 312 | /* clear INTR & ERROR flags */ |
| 313 | out_be32((void __iomem *)hwif->dma_status, dma_stat|6); |
| 314 | drive->waiting_for_dma = 1; |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | |
| 319 | /** |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 320 | * scc_dma_end - Stop DMA |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 321 | * @drive: IDE drive |
| 322 | * |
| 323 | * Check and clear INT Status register. |
| 324 | * Then call __ide_dma_end(). |
| 325 | */ |
| 326 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 327 | static int scc_dma_end(ide_drive_t *drive) |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 328 | { |
| 329 | ide_hwif_t *hwif = HWIF(drive); |
| 330 | unsigned long intsts_port = hwif->dma_base + 0x014; |
| 331 | u32 reg; |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 332 | int dma_stat, data_loss = 0; |
| 333 | static int retry = 0; |
| 334 | |
| 335 | /* errata A308 workaround: Step5 (check data loss) */ |
| 336 | /* We don't check non ide_disk because it is limited to UDMA4 */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 337 | if (!(in_be32((void __iomem *)hwif->io_ports.ctl_addr) |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 338 | & ERR_STAT) && |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 339 | drive->media == ide_disk && drive->current_speed > XFER_UDMA_4) { |
| 340 | reg = in_be32((void __iomem *)intsts_port); |
| 341 | if (!(reg & INTSTS_ACTEINT)) { |
| 342 | printk(KERN_WARNING "%s: operation failed (transfer data loss)\n", |
| 343 | drive->name); |
| 344 | data_loss = 1; |
| 345 | if (retry++) { |
| 346 | struct request *rq = HWGROUP(drive)->rq; |
| 347 | int unit; |
| 348 | /* ERROR_RESET and drive->crc_count are needed |
| 349 | * to reduce DMA transfer mode in retry process. |
| 350 | */ |
| 351 | if (rq) |
| 352 | rq->errors |= ERROR_RESET; |
| 353 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
| 354 | ide_drive_t *drive = &hwif->drives[unit]; |
| 355 | drive->crc_count++; |
| 356 | } |
| 357 | } |
| 358 | } |
| 359 | } |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 360 | |
| 361 | while (1) { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 362 | reg = in_be32((void __iomem *)intsts_port); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 363 | |
| 364 | if (reg & INTSTS_SERROR) { |
| 365 | printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 366 | out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 367 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 368 | out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 369 | continue; |
| 370 | } |
| 371 | |
| 372 | if (reg & INTSTS_PRERR) { |
| 373 | u32 maea0, maec0; |
| 374 | unsigned long ctl_base = hwif->config_data; |
| 375 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 376 | maea0 = in_be32((void __iomem *)(ctl_base + 0xF50)); |
| 377 | maec0 = in_be32((void __iomem *)(ctl_base + 0xF54)); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 378 | |
| 379 | printk(KERN_WARNING "%s: PRERR [addr:%x cmd:%x]\n", SCC_PATA_NAME, maea0, maec0); |
| 380 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 381 | out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 382 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 383 | out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 384 | continue; |
| 385 | } |
| 386 | |
| 387 | if (reg & INTSTS_RERR) { |
| 388 | printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 389 | out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 390 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 391 | out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 392 | continue; |
| 393 | } |
| 394 | |
| 395 | if (reg & INTSTS_ICERR) { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 396 | out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 397 | |
| 398 | printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 399 | out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 400 | continue; |
| 401 | } |
| 402 | |
| 403 | if (reg & INTSTS_BMSINT) { |
| 404 | printk(KERN_WARNING "%s: Internal Bus Error\n", SCC_PATA_NAME); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 405 | out_be32((void __iomem *)intsts_port, INTSTS_BMSINT); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 406 | |
| 407 | ide_do_reset(drive); |
| 408 | continue; |
| 409 | } |
| 410 | |
| 411 | if (reg & INTSTS_BMHE) { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 412 | out_be32((void __iomem *)intsts_port, INTSTS_BMHE); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 413 | continue; |
| 414 | } |
| 415 | |
| 416 | if (reg & INTSTS_ACTEINT) { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 417 | out_be32((void __iomem *)intsts_port, INTSTS_ACTEINT); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 418 | continue; |
| 419 | } |
| 420 | |
| 421 | if (reg & INTSTS_IOIRQS) { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 422 | out_be32((void __iomem *)intsts_port, INTSTS_IOIRQS); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 423 | continue; |
| 424 | } |
| 425 | break; |
| 426 | } |
| 427 | |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 428 | dma_stat = __ide_dma_end(drive); |
| 429 | if (data_loss) |
| 430 | dma_stat |= 2; /* emulate DMA error (to retry command) */ |
| 431 | return dma_stat; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 432 | } |
| 433 | |
Akira Iguchi | 06a9952 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 434 | /* returns 1 if dma irq issued, 0 otherwise */ |
| 435 | static int scc_dma_test_irq(ide_drive_t *drive) |
| 436 | { |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 437 | ide_hwif_t *hwif = HWIF(drive); |
| 438 | u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014); |
Akira Iguchi | 06a9952 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 439 | |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 440 | /* SCC errata A252,A308 workaround: Step4 */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 441 | if ((in_be32((void __iomem *)hwif->io_ports.ctl_addr) |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 442 | & ERR_STAT) && |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 443 | (int_stat & INTSTS_INTRQ)) |
Akira Iguchi | 06a9952 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 444 | return 1; |
| 445 | |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 446 | /* SCC errata A308 workaround: Step5 (polling IOIRQS) */ |
| 447 | if (int_stat & INTSTS_IOIRQS) |
Akira Iguchi | 06a9952 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 448 | return 1; |
| 449 | |
| 450 | if (!drive->waiting_for_dma) |
| 451 | printk(KERN_WARNING "%s: (%s) called while not waiting\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 452 | drive->name, __func__); |
Akira Iguchi | 06a9952 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 453 | return 0; |
| 454 | } |
| 455 | |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 456 | static u8 scc_udma_filter(ide_drive_t *drive) |
| 457 | { |
| 458 | ide_hwif_t *hwif = drive->hwif; |
| 459 | u8 mask = hwif->ultra_mask; |
| 460 | |
| 461 | /* errata A308 workaround: limit non ide_disk drive to UDMA4 */ |
| 462 | if ((drive->media != ide_disk) && (mask & 0xE0)) { |
| 463 | printk(KERN_INFO "%s: limit %s to UDMA4\n", |
| 464 | SCC_PATA_NAME, drive->name); |
Bartlomiej Zolnierkiewicz | 5f8b6c3 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 465 | mask = ATA_UDMA4; |
Kou Ishizaki | 4ae41ff | 2007-07-20 01:11:53 +0200 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | return mask; |
| 469 | } |
| 470 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 471 | /** |
| 472 | * setup_mmio_scc - map CTRL/BMID region |
| 473 | * @dev: PCI device we are configuring |
| 474 | * @name: device name |
| 475 | * |
| 476 | */ |
| 477 | |
| 478 | static int setup_mmio_scc (struct pci_dev *dev, const char *name) |
| 479 | { |
| 480 | unsigned long ctl_base = pci_resource_start(dev, 0); |
| 481 | unsigned long dma_base = pci_resource_start(dev, 1); |
| 482 | unsigned long ctl_size = pci_resource_len(dev, 0); |
| 483 | unsigned long dma_size = pci_resource_len(dev, 1); |
Al Viro | 0bd8496 | 2007-07-26 17:36:09 +0100 | [diff] [blame] | 484 | void __iomem *ctl_addr; |
| 485 | void __iomem *dma_addr; |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 486 | int i, ret; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 487 | |
| 488 | for (i = 0; i < MAX_HWIFS; i++) { |
| 489 | if (scc_ports[i].ctl == 0) |
| 490 | break; |
| 491 | } |
| 492 | if (i >= MAX_HWIFS) |
| 493 | return -ENOMEM; |
| 494 | |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 495 | ret = pci_request_selected_regions(dev, (1 << 2) - 1, name); |
| 496 | if (ret < 0) { |
| 497 | printk(KERN_ERR "%s: can't reserve resources\n", name); |
| 498 | return ret; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | if ((ctl_addr = ioremap(ctl_base, ctl_size)) == NULL) |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 502 | goto fail_0; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 503 | |
| 504 | if ((dma_addr = ioremap(dma_base, dma_size)) == NULL) |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 505 | goto fail_1; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 506 | |
| 507 | pci_set_master(dev); |
| 508 | scc_ports[i].ctl = (unsigned long)ctl_addr; |
| 509 | scc_ports[i].dma = (unsigned long)dma_addr; |
| 510 | pci_set_drvdata(dev, (void *) &scc_ports[i]); |
| 511 | |
| 512 | return 1; |
| 513 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 514 | fail_1: |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 515 | iounmap(ctl_addr); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 516 | fail_0: |
| 517 | return -ENOMEM; |
| 518 | } |
| 519 | |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 520 | static int scc_ide_setup_pci_device(struct pci_dev *dev, |
| 521 | const struct ide_port_info *d) |
| 522 | { |
| 523 | struct scc_ports *ports = pci_get_drvdata(dev); |
| 524 | ide_hwif_t *hwif = NULL; |
| 525 | hw_regs_t hw; |
| 526 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
| 527 | int i; |
| 528 | |
Bartlomiej Zolnierkiewicz | 3fd4d20 | 2008-04-26 17:36:33 +0200 | [diff] [blame] | 529 | hwif = ide_find_port(); |
| 530 | if (hwif == NULL) { |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 531 | printk(KERN_ERR "%s: too many IDE interfaces, " |
| 532 | "no room in table\n", SCC_PATA_NAME); |
| 533 | return -ENOMEM; |
| 534 | } |
| 535 | |
| 536 | memset(&hw, 0, sizeof(hw)); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 537 | for (i = 0; i <= 8; i++) |
| 538 | hw.io_ports_array[i] = ports->dma + 0x20 + i * 4; |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 539 | hw.irq = dev->irq; |
| 540 | hw.dev = &dev->dev; |
| 541 | hw.chipset = ide_pci; |
| 542 | ide_init_port_hw(hwif, &hw); |
| 543 | hwif->dev = &dev->dev; |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 544 | |
| 545 | idx[0] = hwif->index; |
| 546 | |
| 547 | ide_device_add(idx, d); |
| 548 | |
| 549 | return 0; |
| 550 | } |
| 551 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 552 | /** |
| 553 | * init_setup_scc - set up an SCC PATA Controller |
| 554 | * @dev: PCI device |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 555 | * @d: IDE port info |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 556 | * |
| 557 | * Perform the initial set up for this device. |
| 558 | */ |
| 559 | |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 560 | static int __devinit init_setup_scc(struct pci_dev *dev, |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 561 | const struct ide_port_info *d) |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 562 | { |
| 563 | unsigned long ctl_base; |
| 564 | unsigned long dma_base; |
| 565 | unsigned long cckctrl_port; |
| 566 | unsigned long intmask_port; |
| 567 | unsigned long mode_port; |
| 568 | unsigned long ecmode_port; |
| 569 | unsigned long dma_status_port; |
| 570 | u32 reg = 0; |
| 571 | struct scc_ports *ports; |
| 572 | int rc; |
| 573 | |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 574 | rc = pci_enable_device(dev); |
| 575 | if (rc) |
| 576 | goto end; |
| 577 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 578 | rc = setup_mmio_scc(dev, d->name); |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 579 | if (rc < 0) |
| 580 | goto end; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 581 | |
| 582 | ports = pci_get_drvdata(dev); |
| 583 | ctl_base = ports->ctl; |
| 584 | dma_base = ports->dma; |
| 585 | cckctrl_port = ctl_base + 0xff0; |
| 586 | intmask_port = dma_base + 0x010; |
| 587 | mode_port = ctl_base + 0x024; |
| 588 | ecmode_port = ctl_base + 0xf00; |
| 589 | dma_status_port = dma_base + 0x004; |
| 590 | |
| 591 | /* controller initialization */ |
| 592 | reg = 0; |
| 593 | out_be32((void*)cckctrl_port, reg); |
| 594 | reg |= CCKCTRL_ATACLKOEN; |
| 595 | out_be32((void*)cckctrl_port, reg); |
| 596 | reg |= CCKCTRL_LCLKEN | CCKCTRL_OCLKEN; |
| 597 | out_be32((void*)cckctrl_port, reg); |
| 598 | reg |= CCKCTRL_CRST; |
| 599 | out_be32((void*)cckctrl_port, reg); |
| 600 | |
| 601 | for (;;) { |
| 602 | reg = in_be32((void*)cckctrl_port); |
| 603 | if (reg & CCKCTRL_CRST) |
| 604 | break; |
| 605 | udelay(5000); |
| 606 | } |
| 607 | |
| 608 | reg |= CCKCTRL_ATARESET; |
| 609 | out_be32((void*)cckctrl_port, reg); |
| 610 | |
| 611 | out_be32((void*)ecmode_port, ECMODE_VALUE); |
| 612 | out_be32((void*)mode_port, MODE_JCUSFEN); |
| 613 | out_be32((void*)intmask_port, INTMASK_MSK); |
| 614 | |
Akira Iguchi | 3d53ba8 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 615 | rc = scc_ide_setup_pci_device(dev, d); |
| 616 | |
| 617 | end: |
| 618 | return rc; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 619 | } |
| 620 | |
Bartlomiej Zolnierkiewicz | efa3db1 | 2008-04-28 23:44:36 +0200 | [diff] [blame^] | 621 | static void scc_input_data(ide_drive_t *drive, struct request *rq, |
| 622 | void *buf, unsigned int len) |
| 623 | { |
| 624 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
| 625 | |
| 626 | len++; |
| 627 | |
| 628 | if (drive->io_32bit) { |
| 629 | scc_ide_insl(data_addr, buf, len / 4); |
| 630 | |
| 631 | if ((len & 3) >= 2) |
| 632 | scc_ide_insw(data_addr, (u8 *)buf + (len & ~3), 1); |
| 633 | } else |
| 634 | scc_ide_insw(data_addr, buf, len / 2); |
| 635 | } |
| 636 | |
| 637 | static void scc_output_data(ide_drive_t *drive, struct request *rq, |
| 638 | void *buf, unsigned int len) |
| 639 | { |
| 640 | unsigned long data_addr = drive->hwif->io_ports.data_addr; |
| 641 | |
| 642 | len++; |
| 643 | |
| 644 | if (drive->io_32bit) { |
| 645 | scc_ide_outsl(data_addr, buf, len / 4); |
| 646 | |
| 647 | if ((len & 3) >= 2) |
| 648 | scc_ide_outsw(data_addr, (u8 *)buf + (len & ~3), 1); |
| 649 | } else |
| 650 | scc_ide_outsw(data_addr, buf, len / 2); |
| 651 | } |
| 652 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 653 | /** |
| 654 | * init_mmio_iops_scc - set up the iops for MMIO |
| 655 | * @hwif: interface to set up |
| 656 | * |
| 657 | */ |
| 658 | |
| 659 | static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif) |
| 660 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 661 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 662 | struct scc_ports *ports = pci_get_drvdata(dev); |
| 663 | unsigned long dma_base = ports->dma; |
| 664 | |
| 665 | ide_set_hwifdata(hwif, ports); |
| 666 | |
Bartlomiej Zolnierkiewicz | efa3db1 | 2008-04-28 23:44:36 +0200 | [diff] [blame^] | 667 | hwif->input_data = scc_input_data; |
| 668 | hwif->output_data = scc_output_data; |
| 669 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 670 | hwif->INB = scc_ide_inb; |
| 671 | hwif->INW = scc_ide_inw; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 672 | hwif->INSW = scc_ide_insw; |
| 673 | hwif->INSL = scc_ide_insl; |
| 674 | hwif->OUTB = scc_ide_outb; |
| 675 | hwif->OUTBSYNC = scc_ide_outbsync; |
| 676 | hwif->OUTW = scc_ide_outw; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 677 | hwif->OUTSW = scc_ide_outsw; |
| 678 | hwif->OUTSL = scc_ide_outsl; |
| 679 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 680 | hwif->dma_base = dma_base; |
| 681 | hwif->config_data = ports->ctl; |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 682 | hwif->mmio = 1; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 683 | } |
| 684 | |
| 685 | /** |
| 686 | * init_iops_scc - set up iops |
| 687 | * @hwif: interface to set up |
| 688 | * |
| 689 | * Do the basic setup for the SCC hardware interface |
| 690 | * and then do the MMIO setup. |
| 691 | */ |
| 692 | |
| 693 | static void __devinit init_iops_scc(ide_hwif_t *hwif) |
| 694 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 695 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
| 696 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 697 | hwif->hwif_data = NULL; |
| 698 | if (pci_get_drvdata(dev) == NULL) |
| 699 | return; |
| 700 | init_mmio_iops_scc(hwif); |
| 701 | } |
| 702 | |
Bartlomiej Zolnierkiewicz | b4d1c73 | 2008-02-02 19:56:29 +0100 | [diff] [blame] | 703 | static u8 __devinit scc_cable_detect(ide_hwif_t *hwif) |
| 704 | { |
| 705 | return ATA_CBL_PATA80; |
| 706 | } |
| 707 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 708 | /** |
| 709 | * init_hwif_scc - set up hwif |
| 710 | * @hwif: interface to set up |
| 711 | * |
| 712 | * We do the basic set up of the interface structure. The SCC |
| 713 | * requires several custom handlers so we override the default |
| 714 | * ide DMA handlers appropriately. |
| 715 | */ |
| 716 | |
| 717 | static void __devinit init_hwif_scc(ide_hwif_t *hwif) |
| 718 | { |
| 719 | struct scc_ports *ports = ide_get_hwifdata(hwif); |
| 720 | |
Bartlomiej Zolnierkiewicz | 589b062 | 2008-04-26 17:36:34 +0200 | [diff] [blame] | 721 | ports->hwif = hwif; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 722 | |
| 723 | hwif->dma_command = hwif->dma_base; |
| 724 | hwif->dma_status = hwif->dma_base + 0x04; |
| 725 | hwif->dma_prdtable = hwif->dma_base + 0x08; |
| 726 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 727 | /* PTERADD */ |
| 728 | out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 729 | |
Bartlomiej Zolnierkiewicz | 5f8b6c3 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 730 | if (in_be32((void __iomem *)(hwif->config_data + 0xff0)) & CCKCTRL_ATACLKOEN) |
| 731 | hwif->ultra_mask = ATA_UDMA6; /* 133MHz */ |
| 732 | else |
| 733 | hwif->ultra_mask = ATA_UDMA5; /* 100MHz */ |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 734 | } |
| 735 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 736 | static const struct ide_port_ops scc_port_ops = { |
| 737 | .set_pio_mode = scc_set_pio_mode, |
| 738 | .set_dma_mode = scc_set_dma_mode, |
| 739 | .udma_filter = scc_udma_filter, |
| 740 | .cable_detect = scc_cable_detect, |
| 741 | }; |
| 742 | |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 743 | static const struct ide_dma_ops scc_dma_ops = { |
| 744 | .dma_host_set = ide_dma_host_set, |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 745 | .dma_setup = scc_dma_setup, |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 746 | .dma_exec_cmd = ide_dma_exec_cmd, |
| 747 | .dma_start = ide_dma_start, |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 748 | .dma_end = scc_dma_end, |
| 749 | .dma_test_irq = scc_dma_test_irq, |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 750 | .dma_lost_irq = ide_dma_lost_irq, |
| 751 | .dma_timeout = ide_dma_timeout, |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 752 | }; |
| 753 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 754 | #define DECLARE_SCC_DEV(name_str) \ |
| 755 | { \ |
| 756 | .name = name_str, \ |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 757 | .init_iops = init_iops_scc, \ |
| 758 | .init_hwif = init_hwif_scc, \ |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 759 | .port_ops = &scc_port_ops, \ |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 760 | .dma_ops = &scc_dma_ops, \ |
Bartlomiej Zolnierkiewicz | 5e71d9c | 2008-04-26 17:36:35 +0200 | [diff] [blame] | 761 | .host_flags = IDE_HFLAG_SINGLE, \ |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 762 | .pio_mask = ATA_PIO4, \ |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 763 | } |
| 764 | |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 765 | static const struct ide_port_info scc_chipsets[] __devinitdata = { |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 766 | /* 0 */ DECLARE_SCC_DEV("sccIDE"), |
| 767 | }; |
| 768 | |
| 769 | /** |
| 770 | * scc_init_one - pci layer discovery entry |
| 771 | * @dev: PCI device |
| 772 | * @id: ident table entry |
| 773 | * |
| 774 | * Called by the PCI code when it finds an SCC PATA controller. |
| 775 | * We then use the IDE PCI generic helper to do most of the work. |
| 776 | */ |
| 777 | |
| 778 | static int __devinit scc_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| 779 | { |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 780 | return init_setup_scc(dev, &scc_chipsets[id->driver_data]); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | /** |
| 784 | * scc_remove - pci layer remove entry |
| 785 | * @dev: PCI device |
| 786 | * |
| 787 | * Called by the PCI code when it removes an SCC PATA controller. |
| 788 | */ |
| 789 | |
| 790 | static void __devexit scc_remove(struct pci_dev *dev) |
| 791 | { |
| 792 | struct scc_ports *ports = pci_get_drvdata(dev); |
Bartlomiej Zolnierkiewicz | 589b062 | 2008-04-26 17:36:34 +0200 | [diff] [blame] | 793 | ide_hwif_t *hwif = ports->hwif; |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 794 | |
| 795 | if (hwif->dmatable_cpu) { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 796 | pci_free_consistent(dev, PRD_ENTRIES * PRD_BYTES, |
| 797 | hwif->dmatable_cpu, hwif->dmatable_dma); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 798 | hwif->dmatable_cpu = NULL; |
| 799 | } |
| 800 | |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 801 | ide_unregister(hwif); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 802 | |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 803 | iounmap((void*)ports->dma); |
| 804 | iounmap((void*)ports->ctl); |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 805 | pci_release_selected_regions(dev, (1 << 2) - 1); |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 806 | memset(ports, 0, sizeof(*ports)); |
| 807 | } |
| 808 | |
Bartlomiej Zolnierkiewicz | 9cbcc5e | 2007-10-16 22:29:56 +0200 | [diff] [blame] | 809 | static const struct pci_device_id scc_pci_tbl[] = { |
| 810 | { PCI_VDEVICE(TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SCC_ATA), 0 }, |
Kou Ishizaki | bde18a2 | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 811 | { 0, }, |
| 812 | }; |
| 813 | MODULE_DEVICE_TABLE(pci, scc_pci_tbl); |
| 814 | |
| 815 | static struct pci_driver driver = { |
| 816 | .name = "SCC IDE", |
| 817 | .id_table = scc_pci_tbl, |
| 818 | .probe = scc_init_one, |
| 819 | .remove = scc_remove, |
| 820 | }; |
| 821 | |
| 822 | static int scc_ide_init(void) |
| 823 | { |
| 824 | return ide_pci_register_driver(&driver); |
| 825 | } |
| 826 | |
| 827 | module_init(scc_ide_init); |
| 828 | /* -- No exit code? |
| 829 | static void scc_ide_exit(void) |
| 830 | { |
| 831 | ide_pci_unregister_driver(&driver); |
| 832 | } |
| 833 | module_exit(scc_ide_exit); |
| 834 | */ |
| 835 | |
| 836 | |
| 837 | MODULE_DESCRIPTION("PCI driver module for Toshiba SCC IDE"); |
| 838 | MODULE_LICENSE("GPL"); |