Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 2 | * Copyright (c) 2003-2006 Silicon Graphics, Inc. All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of version 2 of the GNU General Public License |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it would be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public |
| 13 | * License along with this program; if not, write the Free Software |
| 14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 15 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * For further information regarding this notice, see: |
| 17 | * |
| 18 | * http://oss.sgi.com/projects/GenInfo/NoticeExplan |
| 19 | */ |
| 20 | |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/types.h> |
| 23 | #include <linux/pci.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <linux/hdreg.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/mm.h> |
| 30 | #include <linux/ioport.h> |
| 31 | #include <linux/blkdev.h> |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 32 | #include <linux/scatterlist.h> |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 33 | #include <linux/ioc4.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <asm/io.h> |
| 35 | |
| 36 | #include <linux/ide.h> |
| 37 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 38 | #define DRV_NAME "SGIIOC4" |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | /* IOC4 Specific Definitions */ |
| 41 | #define IOC4_CMD_OFFSET 0x100 |
| 42 | #define IOC4_CTRL_OFFSET 0x120 |
| 43 | #define IOC4_DMA_OFFSET 0x140 |
| 44 | #define IOC4_INTR_OFFSET 0x0 |
| 45 | |
| 46 | #define IOC4_TIMING 0x00 |
| 47 | #define IOC4_DMA_PTR_L 0x01 |
| 48 | #define IOC4_DMA_PTR_H 0x02 |
| 49 | #define IOC4_DMA_ADDR_L 0x03 |
| 50 | #define IOC4_DMA_ADDR_H 0x04 |
| 51 | #define IOC4_BC_DEV 0x05 |
| 52 | #define IOC4_BC_MEM 0x06 |
| 53 | #define IOC4_DMA_CTRL 0x07 |
| 54 | #define IOC4_DMA_END_ADDR 0x08 |
| 55 | |
| 56 | /* Bits in the IOC4 Control/Status Register */ |
| 57 | #define IOC4_S_DMA_START 0x01 |
| 58 | #define IOC4_S_DMA_STOP 0x02 |
| 59 | #define IOC4_S_DMA_DIR 0x04 |
| 60 | #define IOC4_S_DMA_ACTIVE 0x08 |
| 61 | #define IOC4_S_DMA_ERROR 0x10 |
| 62 | #define IOC4_ATA_MEMERR 0x02 |
| 63 | |
| 64 | /* Read/Write Directions */ |
| 65 | #define IOC4_DMA_WRITE 0x04 |
| 66 | #define IOC4_DMA_READ 0x00 |
| 67 | |
| 68 | /* Interrupt Register Offsets */ |
| 69 | #define IOC4_INTR_REG 0x03 |
| 70 | #define IOC4_INTR_SET 0x05 |
| 71 | #define IOC4_INTR_CLEAR 0x07 |
| 72 | |
| 73 | #define IOC4_IDE_CACHELINE_SIZE 128 |
| 74 | #define IOC4_CMD_CTL_BLK_SIZE 0x20 |
| 75 | #define IOC4_SUPPORTED_FIRMWARE_REV 46 |
| 76 | |
| 77 | typedef struct { |
| 78 | u32 timing_reg0; |
| 79 | u32 timing_reg1; |
| 80 | u32 low_mem_ptr; |
| 81 | u32 high_mem_ptr; |
| 82 | u32 low_mem_addr; |
| 83 | u32 high_mem_addr; |
| 84 | u32 dev_byte_count; |
| 85 | u32 mem_byte_count; |
| 86 | u32 status; |
| 87 | } ioc4_dma_regs_t; |
| 88 | |
| 89 | /* Each Physical Region Descriptor Entry size is 16 bytes (2 * 64 bits) */ |
| 90 | /* IOC4 has only 1 IDE channel */ |
| 91 | #define IOC4_PRD_BYTES 16 |
| 92 | #define IOC4_PRD_ENTRIES (PAGE_SIZE /(4*IOC4_PRD_BYTES)) |
| 93 | |
| 94 | |
| 95 | static void |
| 96 | sgiioc4_init_hwif_ports(hw_regs_t * hw, unsigned long data_port, |
| 97 | unsigned long ctrl_port, unsigned long irq_port) |
| 98 | { |
| 99 | unsigned long reg = data_port; |
| 100 | int i; |
| 101 | |
| 102 | /* Registers are word (32 bit) aligned */ |
| 103 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) |
| 104 | hw->io_ports[i] = reg + i * 4; |
| 105 | |
| 106 | if (ctrl_port) |
| 107 | hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port; |
| 108 | |
| 109 | if (irq_port) |
| 110 | hw->io_ports[IDE_IRQ_OFFSET] = irq_port; |
| 111 | } |
| 112 | |
| 113 | static void |
| 114 | sgiioc4_maskproc(ide_drive_t * drive, int mask) |
| 115 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 116 | writeb(mask ? (drive->ctl | 2) : (drive->ctl & ~2), |
| 117 | (void __iomem *)IDE_CONTROL_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | |
| 121 | static int |
| 122 | sgiioc4_checkirq(ide_hwif_t * hwif) |
| 123 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 124 | unsigned long intr_addr = |
| 125 | hwif->io_ports[IDE_IRQ_OFFSET] + IOC4_INTR_REG * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 127 | if ((u8)readl((void __iomem *)intr_addr) & 0x03) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | return 1; |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 133 | static u8 sgiioc4_INB(unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | static int |
| 136 | sgiioc4_clearirq(ide_drive_t * drive) |
| 137 | { |
| 138 | u32 intr_reg; |
| 139 | ide_hwif_t *hwif = HWIF(drive); |
| 140 | unsigned long other_ir = |
| 141 | hwif->io_ports[IDE_IRQ_OFFSET] + (IOC4_INTR_REG << 2); |
| 142 | |
| 143 | /* Code to check for PCI error conditions */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 144 | intr_reg = readl((void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (intr_reg & 0x03) { /* Valid IOC4-IDE interrupt */ |
| 146 | /* |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 147 | * Using sgiioc4_INB to read the IDE_STATUS_REG has a side effect |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | * of clearing the interrupt. The first read should clear it |
| 149 | * if it is set. The second read should return a "clear" status |
| 150 | * if it got cleared. If not, then spin for a bit trying to |
| 151 | * clear it. |
| 152 | */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 153 | u8 stat = sgiioc4_INB(IDE_STATUS_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | int count = 0; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 155 | stat = sgiioc4_INB(IDE_STATUS_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | while ((stat & 0x80) && (count++ < 100)) { |
| 157 | udelay(1); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 158 | stat = sgiioc4_INB(IDE_STATUS_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | if (intr_reg & 0x02) { |
| 162 | /* Error when transferring DMA data on PCI bus */ |
| 163 | u32 pci_err_addr_low, pci_err_addr_high, |
| 164 | pci_stat_cmd_reg; |
| 165 | |
| 166 | pci_err_addr_low = |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 167 | readl((void __iomem *)hwif->io_ports[IDE_IRQ_OFFSET]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | pci_err_addr_high = |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 169 | readl((void __iomem *)(hwif->io_ports[IDE_IRQ_OFFSET] + 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | pci_read_config_dword(hwif->pci_dev, PCI_COMMAND, |
| 171 | &pci_stat_cmd_reg); |
| 172 | printk(KERN_ERR |
| 173 | "%s(%s) : PCI Bus Error when doing DMA:" |
| 174 | " status-cmd reg is 0x%x\n", |
| 175 | __FUNCTION__, drive->name, pci_stat_cmd_reg); |
| 176 | printk(KERN_ERR |
| 177 | "%s(%s) : PCI Error Address is 0x%x%x\n", |
| 178 | __FUNCTION__, drive->name, |
| 179 | pci_err_addr_high, pci_err_addr_low); |
| 180 | /* Clear the PCI Error indicator */ |
| 181 | pci_write_config_dword(hwif->pci_dev, PCI_COMMAND, |
| 182 | 0x00000146); |
| 183 | } |
| 184 | |
| 185 | /* Clear the Interrupt, Error bits on the IOC4 */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 186 | writel(0x03, (void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 188 | intr_reg = readl((void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | return intr_reg & 3; |
| 192 | } |
| 193 | |
| 194 | static void sgiioc4_ide_dma_start(ide_drive_t * drive) |
| 195 | { |
| 196 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 197 | unsigned long ioc4_dma_addr = hwif->dma_base + IOC4_DMA_CTRL * 4; |
| 198 | unsigned int reg = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | unsigned int temp_reg = reg | IOC4_S_DMA_START; |
| 200 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 201 | writel(temp_reg, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | static u32 |
| 205 | sgiioc4_ide_dma_stop(ide_hwif_t *hwif, u64 dma_base) |
| 206 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 207 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | u32 ioc4_dma; |
| 209 | int count; |
| 210 | |
| 211 | count = 0; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 212 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | while ((ioc4_dma & IOC4_S_DMA_STOP) && (count++ < 200)) { |
| 214 | udelay(1); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 215 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | } |
| 217 | return ioc4_dma; |
| 218 | } |
| 219 | |
| 220 | /* Stops the IOC4 DMA Engine */ |
| 221 | static int |
| 222 | sgiioc4_ide_dma_end(ide_drive_t * drive) |
| 223 | { |
| 224 | u32 ioc4_dma, bc_dev, bc_mem, num, valid = 0, cnt = 0; |
| 225 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 226 | unsigned long dma_base = hwif->dma_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | int dma_stat = 0; |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 228 | unsigned long *ending_dma = ide_get_hwifdata(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 230 | writel(IOC4_S_DMA_STOP, (void __iomem *)(dma_base + IOC4_DMA_CTRL * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
| 232 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 233 | |
| 234 | if (ioc4_dma & IOC4_S_DMA_STOP) { |
| 235 | printk(KERN_ERR |
| 236 | "%s(%s): IOC4 DMA STOP bit is still 1 :" |
| 237 | "ioc4_dma_reg 0x%x\n", |
| 238 | __FUNCTION__, drive->name, ioc4_dma); |
| 239 | dma_stat = 1; |
| 240 | } |
| 241 | |
| 242 | /* |
| 243 | * The IOC4 will DMA 1's to the ending dma area to indicate that |
| 244 | * previous data DMA is complete. This is necessary because of relaxed |
| 245 | * ordering between register reads and DMA writes on the Altix. |
| 246 | */ |
| 247 | while ((cnt++ < 200) && (!valid)) { |
| 248 | for (num = 0; num < 16; num++) { |
| 249 | if (ending_dma[num]) { |
| 250 | valid = 1; |
| 251 | break; |
| 252 | } |
| 253 | } |
| 254 | udelay(1); |
| 255 | } |
| 256 | if (!valid) { |
| 257 | printk(KERN_ERR "%s(%s) : DMA incomplete\n", __FUNCTION__, |
| 258 | drive->name); |
| 259 | dma_stat = 1; |
| 260 | } |
| 261 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 262 | bc_dev = readl((void __iomem *)(dma_base + IOC4_BC_DEV * 4)); |
| 263 | bc_mem = readl((void __iomem *)(dma_base + IOC4_BC_MEM * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | if ((bc_dev & 0x01FF) || (bc_mem & 0x1FF)) { |
| 266 | if (bc_dev > bc_mem + 8) { |
| 267 | printk(KERN_ERR |
| 268 | "%s(%s): WARNING!! byte_count_dev %d " |
| 269 | "!= byte_count_mem %d\n", |
| 270 | __FUNCTION__, drive->name, bc_dev, bc_mem); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | drive->waiting_for_dma = 0; |
| 275 | ide_destroy_dmatable(drive); |
| 276 | |
| 277 | return dma_stat; |
| 278 | } |
| 279 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 280 | static void sgiioc4_set_dma_mode(ide_drive_t *drive, const u8 speed) |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 281 | { |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 282 | } |
| 283 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | /* returns 1 if dma irq issued, 0 otherwise */ |
| 285 | static int |
| 286 | sgiioc4_ide_dma_test_irq(ide_drive_t * drive) |
| 287 | { |
| 288 | return sgiioc4_checkirq(HWIF(drive)); |
| 289 | } |
| 290 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 291 | static void sgiioc4_dma_host_set(ide_drive_t *drive, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | { |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 293 | if (!on) |
| 294 | sgiioc4_clearirq(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | static void |
| 298 | sgiioc4_resetproc(ide_drive_t * drive) |
| 299 | { |
| 300 | sgiioc4_ide_dma_end(drive); |
| 301 | sgiioc4_clearirq(drive); |
| 302 | } |
| 303 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 304 | static void |
| 305 | sgiioc4_dma_lost_irq(ide_drive_t * drive) |
| 306 | { |
| 307 | sgiioc4_resetproc(drive); |
| 308 | |
| 309 | ide_dma_lost_irq(drive); |
| 310 | } |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | static u8 |
| 313 | sgiioc4_INB(unsigned long port) |
| 314 | { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 315 | u8 reg = (u8) readb((void __iomem *) port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | |
| 317 | if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */ |
| 318 | if (reg & 0x51) { /* Not busy...check for interrupt */ |
| 319 | unsigned long other_ir = port - 0x110; |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 320 | unsigned int intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
| 322 | /* Clear the Interrupt, Error bits on the IOC4 */ |
| 323 | if (intr_reg & 0x03) { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 324 | writel(0x03, (void __iomem *) other_ir); |
| 325 | intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | } |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | return reg; |
| 331 | } |
| 332 | |
| 333 | /* Creates a dma map for the scatter-gather list entries */ |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 334 | static int __devinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | ide_dma_sgiioc4(ide_hwif_t * hwif, unsigned long dma_base) |
| 336 | { |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 337 | void __iomem *virt_dma_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | int num_ports = sizeof (ioc4_dma_regs_t); |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 339 | void *pad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name, |
| 342 | dma_base, dma_base + num_ports - 1); |
| 343 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 344 | if (!request_mem_region(dma_base, num_ports, hwif->name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | printk(KERN_ERR |
| 346 | "%s(%s) -- ERROR, Addresses 0x%p to 0x%p " |
| 347 | "ALREADY in use\n", |
| 348 | __FUNCTION__, hwif->name, (void *) dma_base, |
| 349 | (void *) dma_base + num_ports - 1); |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 350 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 353 | virt_dma_base = ioremap(dma_base, num_ports); |
| 354 | if (virt_dma_base == NULL) { |
| 355 | printk(KERN_ERR |
| 356 | "%s(%s) -- ERROR, Unable to map addresses 0x%lx to 0x%lx\n", |
| 357 | __FUNCTION__, hwif->name, dma_base, dma_base + num_ports - 1); |
| 358 | goto dma_remap_failure; |
| 359 | } |
| 360 | hwif->dma_base = (unsigned long) virt_dma_base; |
| 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | hwif->dmatable_cpu = pci_alloc_consistent(hwif->pci_dev, |
| 363 | IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
| 364 | &hwif->dmatable_dma); |
| 365 | |
| 366 | if (!hwif->dmatable_cpu) |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 367 | goto dma_pci_alloc_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
| 369 | hwif->sg_max_nents = IOC4_PRD_ENTRIES; |
| 370 | |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 371 | pad = pci_alloc_consistent(hwif->pci_dev, IOC4_IDE_CACHELINE_SIZE, |
| 372 | (dma_addr_t *) &(hwif->dma_status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 374 | if (pad) { |
| 375 | ide_set_hwifdata(hwif, pad); |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 376 | return 0; |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 377 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | pci_free_consistent(hwif->pci_dev, |
| 380 | IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
| 381 | hwif->dmatable_cpu, hwif->dmatable_dma); |
| 382 | printk(KERN_INFO |
| 383 | "%s() -- Error! Unable to allocate DMA Maps for drive %s\n", |
| 384 | __FUNCTION__, hwif->name); |
| 385 | printk(KERN_INFO |
| 386 | "Changing from DMA to PIO mode for Drive %s\n", hwif->name); |
| 387 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 388 | dma_pci_alloc_failure: |
| 389 | iounmap(virt_dma_base); |
| 390 | |
| 391 | dma_remap_failure: |
| 392 | release_mem_region(dma_base, num_ports); |
| 393 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 394 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | /* Initializes the IOC4 DMA Engine */ |
| 398 | static void |
| 399 | sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive) |
| 400 | { |
| 401 | u32 ioc4_dma; |
| 402 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 403 | unsigned long dma_base = hwif->dma_base; |
| 404 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | u32 dma_addr, ending_dma_addr; |
| 406 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 407 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
| 409 | if (ioc4_dma & IOC4_S_DMA_ACTIVE) { |
| 410 | printk(KERN_WARNING |
| 411 | "%s(%s):Warning!! DMA from previous transfer was still active\n", |
| 412 | __FUNCTION__, drive->name); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 413 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 415 | |
| 416 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 417 | printk(KERN_ERR |
| 418 | "%s(%s) : IOC4 Dma STOP bit is still 1\n", |
| 419 | __FUNCTION__, drive->name); |
| 420 | } |
| 421 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 422 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | if (ioc4_dma & IOC4_S_DMA_ERROR) { |
| 424 | printk(KERN_WARNING |
| 425 | "%s(%s) : Warning!! - DMA Error during Previous" |
| 426 | " transfer | status 0x%x\n", |
| 427 | __FUNCTION__, drive->name, ioc4_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 428 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 430 | |
| 431 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 432 | printk(KERN_ERR |
| 433 | "%s(%s) : IOC4 DMA STOP bit is still 1\n", |
| 434 | __FUNCTION__, drive->name); |
| 435 | } |
| 436 | |
| 437 | /* Address of the Scatter Gather List */ |
| 438 | dma_addr = cpu_to_le32(hwif->dmatable_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 439 | writel(dma_addr, (void __iomem *)(dma_base + IOC4_DMA_PTR_L * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
| 441 | /* Address of the Ending DMA */ |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 442 | memset(ide_get_hwifdata(hwif), 0, IOC4_IDE_CACHELINE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | ending_dma_addr = cpu_to_le32(hwif->dma_status); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 444 | writel(ending_dma_addr, (void __iomem *)(dma_base + IOC4_DMA_END_ADDR * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 446 | writel(dma_direction, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | drive->waiting_for_dma = 1; |
| 448 | } |
| 449 | |
| 450 | /* IOC4 Scatter Gather list Format */ |
| 451 | /* 128 Bit entries to support 64 bit addresses in the future */ |
| 452 | /* The Scatter Gather list Entry should be in the BIG-ENDIAN Format */ |
| 453 | /* --------------------------------------------------------------------- */ |
| 454 | /* | Upper 32 bits - Zero | Lower 32 bits- address | */ |
| 455 | /* --------------------------------------------------------------------- */ |
| 456 | /* | Upper 32 bits - Zero |EOL| 15 unused | 16 Bit Length| */ |
| 457 | /* --------------------------------------------------------------------- */ |
| 458 | /* Creates the scatter gather list, DMA Table */ |
| 459 | static unsigned int |
| 460 | sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir) |
| 461 | { |
| 462 | ide_hwif_t *hwif = HWIF(drive); |
| 463 | unsigned int *table = hwif->dmatable_cpu; |
| 464 | unsigned int count = 0, i = 1; |
| 465 | struct scatterlist *sg; |
| 466 | |
| 467 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
| 468 | |
| 469 | if (!i) |
| 470 | return 0; /* sglist of length Zero */ |
| 471 | |
| 472 | sg = hwif->sg_table; |
| 473 | while (i && sg_dma_len(sg)) { |
| 474 | dma_addr_t cur_addr; |
| 475 | int cur_len; |
| 476 | cur_addr = sg_dma_address(sg); |
| 477 | cur_len = sg_dma_len(sg); |
| 478 | |
| 479 | while (cur_len) { |
| 480 | if (count++ >= IOC4_PRD_ENTRIES) { |
| 481 | printk(KERN_WARNING |
| 482 | "%s: DMA table too small\n", |
| 483 | drive->name); |
| 484 | goto use_pio_instead; |
| 485 | } else { |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 486 | u32 bcount = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | 0x10000 - (cur_addr & 0xffff); |
| 488 | |
| 489 | if (bcount > cur_len) |
| 490 | bcount = cur_len; |
| 491 | |
| 492 | /* put the addr, length in |
| 493 | * the IOC4 dma-table format */ |
| 494 | *table = 0x0; |
| 495 | table++; |
| 496 | *table = cpu_to_be32(cur_addr); |
| 497 | table++; |
| 498 | *table = 0x0; |
| 499 | table++; |
| 500 | |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 501 | *table = cpu_to_be32(bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | table++; |
| 503 | |
| 504 | cur_addr += bcount; |
| 505 | cur_len -= bcount; |
| 506 | } |
| 507 | } |
| 508 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 509 | sg = sg_next(sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | i--; |
| 511 | } |
| 512 | |
| 513 | if (count) { |
| 514 | table--; |
| 515 | *table |= cpu_to_be32(0x80000000); |
| 516 | return count; |
| 517 | } |
| 518 | |
| 519 | use_pio_instead: |
Bartlomiej Zolnierkiewicz | f6fb786 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 520 | ide_destroy_dmatable(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
| 522 | return 0; /* revert to PIO for this request */ |
| 523 | } |
| 524 | |
| 525 | static int sgiioc4_ide_dma_setup(ide_drive_t *drive) |
| 526 | { |
| 527 | struct request *rq = HWGROUP(drive)->rq; |
| 528 | unsigned int count = 0; |
| 529 | int ddir; |
| 530 | |
| 531 | if (rq_data_dir(rq)) |
| 532 | ddir = PCI_DMA_TODEVICE; |
| 533 | else |
| 534 | ddir = PCI_DMA_FROMDEVICE; |
| 535 | |
| 536 | if (!(count = sgiioc4_build_dma_table(drive, rq, ddir))) { |
| 537 | /* try PIO instead of DMA */ |
| 538 | ide_map_sg(drive, rq); |
| 539 | return 1; |
| 540 | } |
| 541 | |
| 542 | if (rq_data_dir(rq)) |
| 543 | /* Writes TO the IOC4 FROM Main Memory */ |
| 544 | ddir = IOC4_DMA_READ; |
| 545 | else |
| 546 | /* Writes FROM the IOC4 TO Main Memory */ |
| 547 | ddir = IOC4_DMA_WRITE; |
| 548 | |
| 549 | sgiioc4_configure_for_dma(ddir, drive); |
| 550 | |
| 551 | return 0; |
| 552 | } |
| 553 | |
| 554 | static void __devinit |
| 555 | ide_init_sgiioc4(ide_hwif_t * hwif) |
| 556 | { |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 557 | hwif->mmio = 1; |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 558 | hwif->pio_mask = 0x00; |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 559 | hwif->set_pio_mode = NULL; /* Sets timing for PIO mode */ |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 560 | hwif->set_dma_mode = &sgiioc4_set_dma_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | hwif->selectproc = NULL;/* Use the default routine to select drive */ |
| 562 | hwif->reset_poll = NULL;/* No HBA specific reset_poll needed */ |
| 563 | hwif->pre_reset = NULL; /* No HBA specific pre_set needed */ |
| 564 | hwif->resetproc = &sgiioc4_resetproc;/* Reset DMA engine, |
| 565 | clear interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | hwif->maskproc = &sgiioc4_maskproc; /* Mask on/off NIEN register */ |
| 567 | hwif->quirkproc = NULL; |
| 568 | hwif->busproc = NULL; |
| 569 | |
Bartlomiej Zolnierkiewicz | b9d9e61 | 2007-10-13 17:47:52 +0200 | [diff] [blame] | 570 | hwif->INB = &sgiioc4_INB; |
| 571 | |
| 572 | if (hwif->dma_base == 0) |
| 573 | return; |
| 574 | |
Bartlomiej Zolnierkiewicz | 5f8b6c3 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 575 | hwif->mwdma_mask = ATA_MWDMA2_ONLY; |
Bartlomiej Zolnierkiewicz | b9d9e61 | 2007-10-13 17:47:52 +0200 | [diff] [blame] | 576 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 577 | hwif->dma_host_set = &sgiioc4_dma_host_set; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | hwif->dma_setup = &sgiioc4_ide_dma_setup; |
| 579 | hwif->dma_start = &sgiioc4_ide_dma_start; |
| 580 | hwif->ide_dma_end = &sgiioc4_ide_dma_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | hwif->ide_dma_test_irq = &sgiioc4_ide_dma_test_irq; |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 582 | hwif->dma_lost_irq = &sgiioc4_dma_lost_irq; |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 583 | hwif->dma_timeout = &ide_dma_timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | static int __devinit |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 587 | sgiioc4_ide_setup_pci_device(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | { |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 589 | unsigned long cmd_base, dma_base, irqport; |
| 590 | unsigned long bar0, cmd_phys_base, ctl; |
| 591 | void __iomem *virt_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | ide_hwif_t *hwif; |
| 593 | int h; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 594 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 595 | hw_regs_t hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
Jeremy Higdon | deb5e5c | 2005-12-15 02:10:35 +0100 | [diff] [blame] | 597 | /* |
| 598 | * Find an empty HWIF; if none available, return -ENOMEM. |
| 599 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | for (h = 0; h < MAX_HWIFS; ++h) { |
| 601 | hwif = &ide_hwifs[h]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | if (hwif->chipset == ide_unknown) |
| 603 | break; |
| 604 | } |
Jeremy Higdon | deb5e5c | 2005-12-15 02:10:35 +0100 | [diff] [blame] | 605 | if (h == MAX_HWIFS) { |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 606 | printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", |
| 607 | DRV_NAME); |
Jeremy Higdon | deb5e5c | 2005-12-15 02:10:35 +0100 | [diff] [blame] | 608 | return -ENOMEM; |
| 609 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | /* Get the CmdBlk and CtrlBlk Base Registers */ |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 612 | bar0 = pci_resource_start(dev, 0); |
| 613 | virt_base = ioremap(bar0, pci_resource_len(dev, 0)); |
| 614 | if (virt_base == NULL) { |
| 615 | printk(KERN_ERR "%s: Unable to remap BAR 0 address: 0x%lx\n", |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 616 | DRV_NAME, bar0); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 617 | return -ENOMEM; |
| 618 | } |
| 619 | cmd_base = (unsigned long) virt_base + IOC4_CMD_OFFSET; |
| 620 | ctl = (unsigned long) virt_base + IOC4_CTRL_OFFSET; |
| 621 | irqport = (unsigned long) virt_base + IOC4_INTR_OFFSET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET; |
| 623 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 624 | cmd_phys_base = bar0 + IOC4_CMD_OFFSET; |
| 625 | if (!request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE, |
| 626 | hwif->name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | printk(KERN_ERR |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 628 | "%s : %s -- ERROR, Addresses " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | "0x%p to 0x%p ALREADY in use\n", |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 630 | __FUNCTION__, hwif->name, (void *) cmd_phys_base, |
| 631 | (void *) cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | return -ENOMEM; |
| 633 | } |
| 634 | |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 635 | /* Initialize the IO registers */ |
| 636 | memset(&hw, 0, sizeof(hw)); |
| 637 | sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 638 | hw.irq = dev->irq; |
| 639 | hw.chipset = ide_pci; |
| 640 | hw.dev = &dev->dev; |
| 641 | ide_init_port_hw(hwif, &hw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | hwif->pci_dev = dev; |
| 644 | hwif->channel = 0; /* Single Channel chip */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 646 | /* The IOC4 uses MMIO rather than Port IO. */ |
| 647 | default_hwif_mmiops(hwif); |
| 648 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | /* Initializing chipset IRQ Registers */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 650 | writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
Bartlomiej Zolnierkiewicz | 9ff6f72 | 2007-10-16 22:29:58 +0200 | [diff] [blame] | 652 | if (dma_base == 0 || ide_dma_sgiioc4(hwif, dma_base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | printk(KERN_INFO "%s: %s Bus-Master DMA disabled\n", |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 654 | hwif->name, DRV_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Bartlomiej Zolnierkiewicz | b9d9e61 | 2007-10-13 17:47:52 +0200 | [diff] [blame] | 656 | ide_init_sgiioc4(hwif); |
| 657 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 658 | idx[0] = hwif->index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 660 | if (ide_device_add(idx)) |
| 661 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | static unsigned int __devinit |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 667 | pci_init_sgiioc4(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | int ret; |
| 670 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | printk(KERN_INFO "%s: IDE controller at PCI slot %s, revision %d\n", |
Bartlomiej Zolnierkiewicz | fc212bb | 2007-10-19 00:30:08 +0200 | [diff] [blame] | 672 | DRV_NAME, pci_name(dev), dev->revision); |
| 673 | |
| 674 | if (dev->revision < IOC4_SUPPORTED_FIRMWARE_REV) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | printk(KERN_ERR "Skipping %s IDE controller in slot %s: " |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 676 | "firmware is obsolete - please upgrade to " |
| 677 | "revision46 or higher\n", |
| 678 | DRV_NAME, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | ret = -EAGAIN; |
| 680 | goto out; |
| 681 | } |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 682 | ret = sgiioc4_ide_setup_pci_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | out: |
| 684 | return ret; |
| 685 | } |
| 686 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | int |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 688 | ioc4_ide_attach_one(struct ioc4_driver_data *idd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | { |
Brent Casavant | f5befce | 2006-06-23 02:05:52 -0700 | [diff] [blame] | 690 | /* PCI-RT does not bring out IDE connection. |
| 691 | * Do not attach to this particular IOC4. |
| 692 | */ |
| 693 | if (idd->idd_variant == IOC4_VARIANT_PCI_RT) |
| 694 | return 0; |
| 695 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 696 | return pci_init_sgiioc4(idd->idd_pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | } |
| 698 | |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 699 | static struct ioc4_submodule ioc4_ide_submodule = { |
| 700 | .is_name = "IOC4_ide", |
| 701 | .is_owner = THIS_MODULE, |
| 702 | .is_probe = ioc4_ide_attach_one, |
| 703 | /* .is_remove = ioc4_ide_remove_one, */ |
| 704 | }; |
| 705 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame] | 706 | static int __init ioc4_ide_init(void) |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 707 | { |
| 708 | return ioc4_register_submodule(&ioc4_ide_submodule); |
| 709 | } |
| 710 | |
Brent Casavant | 59f1480 | 2006-10-17 00:09:25 -0700 | [diff] [blame] | 711 | late_initcall(ioc4_ide_init); /* Call only after IDE init is done */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 713 | MODULE_AUTHOR("Aniket Malatpure/Jeremy Higdon"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | MODULE_DESCRIPTION("IDE PCI driver module for SGI IOC4 Base-IO Card"); |
| 715 | MODULE_LICENSE("GPL"); |