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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/ioport.h> |
| 29 | #include <linux/blkdev.h> |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 30 | #include <linux/scatterlist.h> |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 31 | #include <linux/ioc4.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <asm/io.h> |
| 33 | |
| 34 | #include <linux/ide.h> |
| 35 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 36 | #define DRV_NAME "SGIIOC4" |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | /* IOC4 Specific Definitions */ |
| 39 | #define IOC4_CMD_OFFSET 0x100 |
| 40 | #define IOC4_CTRL_OFFSET 0x120 |
| 41 | #define IOC4_DMA_OFFSET 0x140 |
| 42 | #define IOC4_INTR_OFFSET 0x0 |
| 43 | |
| 44 | #define IOC4_TIMING 0x00 |
| 45 | #define IOC4_DMA_PTR_L 0x01 |
| 46 | #define IOC4_DMA_PTR_H 0x02 |
| 47 | #define IOC4_DMA_ADDR_L 0x03 |
| 48 | #define IOC4_DMA_ADDR_H 0x04 |
| 49 | #define IOC4_BC_DEV 0x05 |
| 50 | #define IOC4_BC_MEM 0x06 |
| 51 | #define IOC4_DMA_CTRL 0x07 |
| 52 | #define IOC4_DMA_END_ADDR 0x08 |
| 53 | |
| 54 | /* Bits in the IOC4 Control/Status Register */ |
| 55 | #define IOC4_S_DMA_START 0x01 |
| 56 | #define IOC4_S_DMA_STOP 0x02 |
| 57 | #define IOC4_S_DMA_DIR 0x04 |
| 58 | #define IOC4_S_DMA_ACTIVE 0x08 |
| 59 | #define IOC4_S_DMA_ERROR 0x10 |
| 60 | #define IOC4_ATA_MEMERR 0x02 |
| 61 | |
| 62 | /* Read/Write Directions */ |
| 63 | #define IOC4_DMA_WRITE 0x04 |
| 64 | #define IOC4_DMA_READ 0x00 |
| 65 | |
| 66 | /* Interrupt Register Offsets */ |
| 67 | #define IOC4_INTR_REG 0x03 |
| 68 | #define IOC4_INTR_SET 0x05 |
| 69 | #define IOC4_INTR_CLEAR 0x07 |
| 70 | |
| 71 | #define IOC4_IDE_CACHELINE_SIZE 128 |
| 72 | #define IOC4_CMD_CTL_BLK_SIZE 0x20 |
| 73 | #define IOC4_SUPPORTED_FIRMWARE_REV 46 |
| 74 | |
| 75 | typedef struct { |
| 76 | u32 timing_reg0; |
| 77 | u32 timing_reg1; |
| 78 | u32 low_mem_ptr; |
| 79 | u32 high_mem_ptr; |
| 80 | u32 low_mem_addr; |
| 81 | u32 high_mem_addr; |
| 82 | u32 dev_byte_count; |
| 83 | u32 mem_byte_count; |
| 84 | u32 status; |
| 85 | } ioc4_dma_regs_t; |
| 86 | |
| 87 | /* Each Physical Region Descriptor Entry size is 16 bytes (2 * 64 bits) */ |
| 88 | /* IOC4 has only 1 IDE channel */ |
| 89 | #define IOC4_PRD_BYTES 16 |
| 90 | #define IOC4_PRD_ENTRIES (PAGE_SIZE /(4*IOC4_PRD_BYTES)) |
| 91 | |
| 92 | |
| 93 | static void |
| 94 | sgiioc4_init_hwif_ports(hw_regs_t * hw, unsigned long data_port, |
| 95 | unsigned long ctrl_port, unsigned long irq_port) |
| 96 | { |
| 97 | unsigned long reg = data_port; |
| 98 | int i; |
| 99 | |
| 100 | /* Registers are word (32 bit) aligned */ |
| 101 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) |
| 102 | hw->io_ports[i] = reg + i * 4; |
| 103 | |
| 104 | if (ctrl_port) |
| 105 | hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port; |
| 106 | |
| 107 | if (irq_port) |
| 108 | hw->io_ports[IDE_IRQ_OFFSET] = irq_port; |
| 109 | } |
| 110 | |
| 111 | static void |
| 112 | sgiioc4_maskproc(ide_drive_t * drive, int mask) |
| 113 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 114 | writeb(mask ? (drive->ctl | 2) : (drive->ctl & ~2), |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 115 | (void __iomem *)drive->hwif->io_ports[IDE_CONTROL_OFFSET]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | } |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | static int |
| 119 | sgiioc4_checkirq(ide_hwif_t * hwif) |
| 120 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 121 | unsigned long intr_addr = |
| 122 | hwif->io_ports[IDE_IRQ_OFFSET] + IOC4_INTR_REG * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 124 | if ((u8)readl((void __iomem *)intr_addr) & 0x03) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | return 1; |
| 126 | |
| 127 | return 0; |
| 128 | } |
| 129 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 130 | static u8 sgiioc4_INB(unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | static int |
| 133 | sgiioc4_clearirq(ide_drive_t * drive) |
| 134 | { |
| 135 | u32 intr_reg; |
| 136 | ide_hwif_t *hwif = HWIF(drive); |
| 137 | unsigned long other_ir = |
| 138 | hwif->io_ports[IDE_IRQ_OFFSET] + (IOC4_INTR_REG << 2); |
| 139 | |
| 140 | /* Code to check for PCI error conditions */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 141 | intr_reg = readl((void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | if (intr_reg & 0x03) { /* Valid IOC4-IDE interrupt */ |
| 143 | /* |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 144 | * Using sgiioc4_INB to read the Status register has a side |
| 145 | * effect of clearing the interrupt. The first read should |
| 146 | * clear it if it is set. The second read should return |
| 147 | * a "clear" status if it got cleared. If not, then spin |
| 148 | * for a bit trying to clear it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | */ |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 150 | u8 stat = sgiioc4_INB(hwif->io_ports[IDE_STATUS_OFFSET]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | int count = 0; |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 152 | stat = sgiioc4_INB(hwif->io_ports[IDE_STATUS_OFFSET]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | while ((stat & 0x80) && (count++ < 100)) { |
| 154 | udelay(1); |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 155 | stat = sgiioc4_INB(hwif->io_ports[IDE_STATUS_OFFSET]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | if (intr_reg & 0x02) { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 159 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | /* Error when transferring DMA data on PCI bus */ |
| 161 | u32 pci_err_addr_low, pci_err_addr_high, |
| 162 | pci_stat_cmd_reg; |
| 163 | |
| 164 | pci_err_addr_low = |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 165 | readl((void __iomem *)hwif->io_ports[IDE_IRQ_OFFSET]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | pci_err_addr_high = |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 167 | readl((void __iomem *)(hwif->io_ports[IDE_IRQ_OFFSET] + 4)); |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 168 | pci_read_config_dword(dev, PCI_COMMAND, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | &pci_stat_cmd_reg); |
| 170 | printk(KERN_ERR |
| 171 | "%s(%s) : PCI Bus Error when doing DMA:" |
| 172 | " status-cmd reg is 0x%x\n", |
| 173 | __FUNCTION__, drive->name, pci_stat_cmd_reg); |
| 174 | printk(KERN_ERR |
| 175 | "%s(%s) : PCI Error Address is 0x%x%x\n", |
| 176 | __FUNCTION__, drive->name, |
| 177 | pci_err_addr_high, pci_err_addr_low); |
| 178 | /* Clear the PCI Error indicator */ |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 179 | pci_write_config_dword(dev, PCI_COMMAND, 0x00000146); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | /* Clear the Interrupt, Error bits on the IOC4 */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 183 | writel(0x03, (void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 185 | intr_reg = readl((void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | return intr_reg & 3; |
| 189 | } |
| 190 | |
| 191 | static void sgiioc4_ide_dma_start(ide_drive_t * drive) |
| 192 | { |
| 193 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 194 | unsigned long ioc4_dma_addr = hwif->dma_base + IOC4_DMA_CTRL * 4; |
| 195 | unsigned int reg = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | unsigned int temp_reg = reg | IOC4_S_DMA_START; |
| 197 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 198 | writel(temp_reg, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | static u32 |
| 202 | sgiioc4_ide_dma_stop(ide_hwif_t *hwif, u64 dma_base) |
| 203 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 204 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | u32 ioc4_dma; |
| 206 | int count; |
| 207 | |
| 208 | count = 0; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 209 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | while ((ioc4_dma & IOC4_S_DMA_STOP) && (count++ < 200)) { |
| 211 | udelay(1); |
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 | } |
| 214 | return ioc4_dma; |
| 215 | } |
| 216 | |
| 217 | /* Stops the IOC4 DMA Engine */ |
| 218 | static int |
| 219 | sgiioc4_ide_dma_end(ide_drive_t * drive) |
| 220 | { |
| 221 | u32 ioc4_dma, bc_dev, bc_mem, num, valid = 0, cnt = 0; |
| 222 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 223 | unsigned long dma_base = hwif->dma_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | int dma_stat = 0; |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 225 | unsigned long *ending_dma = ide_get_hwifdata(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 227 | 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] | 228 | |
| 229 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 230 | |
| 231 | if (ioc4_dma & IOC4_S_DMA_STOP) { |
| 232 | printk(KERN_ERR |
| 233 | "%s(%s): IOC4 DMA STOP bit is still 1 :" |
| 234 | "ioc4_dma_reg 0x%x\n", |
| 235 | __FUNCTION__, drive->name, ioc4_dma); |
| 236 | dma_stat = 1; |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * The IOC4 will DMA 1's to the ending dma area to indicate that |
| 241 | * previous data DMA is complete. This is necessary because of relaxed |
| 242 | * ordering between register reads and DMA writes on the Altix. |
| 243 | */ |
| 244 | while ((cnt++ < 200) && (!valid)) { |
| 245 | for (num = 0; num < 16; num++) { |
| 246 | if (ending_dma[num]) { |
| 247 | valid = 1; |
| 248 | break; |
| 249 | } |
| 250 | } |
| 251 | udelay(1); |
| 252 | } |
| 253 | if (!valid) { |
| 254 | printk(KERN_ERR "%s(%s) : DMA incomplete\n", __FUNCTION__, |
| 255 | drive->name); |
| 256 | dma_stat = 1; |
| 257 | } |
| 258 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 259 | bc_dev = readl((void __iomem *)(dma_base + IOC4_BC_DEV * 4)); |
| 260 | bc_mem = readl((void __iomem *)(dma_base + IOC4_BC_MEM * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | if ((bc_dev & 0x01FF) || (bc_mem & 0x1FF)) { |
| 263 | if (bc_dev > bc_mem + 8) { |
| 264 | printk(KERN_ERR |
| 265 | "%s(%s): WARNING!! byte_count_dev %d " |
| 266 | "!= byte_count_mem %d\n", |
| 267 | __FUNCTION__, drive->name, bc_dev, bc_mem); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | drive->waiting_for_dma = 0; |
| 272 | ide_destroy_dmatable(drive); |
| 273 | |
| 274 | return dma_stat; |
| 275 | } |
| 276 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 277 | 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] | 278 | { |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 279 | } |
| 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | /* returns 1 if dma irq issued, 0 otherwise */ |
| 282 | static int |
| 283 | sgiioc4_ide_dma_test_irq(ide_drive_t * drive) |
| 284 | { |
| 285 | return sgiioc4_checkirq(HWIF(drive)); |
| 286 | } |
| 287 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 288 | static void sgiioc4_dma_host_set(ide_drive_t *drive, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 290 | if (!on) |
| 291 | sgiioc4_clearirq(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | static void |
| 295 | sgiioc4_resetproc(ide_drive_t * drive) |
| 296 | { |
| 297 | sgiioc4_ide_dma_end(drive); |
| 298 | sgiioc4_clearirq(drive); |
| 299 | } |
| 300 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 301 | static void |
| 302 | sgiioc4_dma_lost_irq(ide_drive_t * drive) |
| 303 | { |
| 304 | sgiioc4_resetproc(drive); |
| 305 | |
| 306 | ide_dma_lost_irq(drive); |
| 307 | } |
| 308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | static u8 |
| 310 | sgiioc4_INB(unsigned long port) |
| 311 | { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 312 | u8 reg = (u8) readb((void __iomem *) port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
| 314 | if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */ |
| 315 | if (reg & 0x51) { /* Not busy...check for interrupt */ |
| 316 | unsigned long other_ir = port - 0x110; |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 317 | unsigned int intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
| 319 | /* Clear the Interrupt, Error bits on the IOC4 */ |
| 320 | if (intr_reg & 0x03) { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 321 | writel(0x03, (void __iomem *) other_ir); |
| 322 | intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | } |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | return reg; |
| 328 | } |
| 329 | |
| 330 | /* Creates a dma map for the scatter-gather list entries */ |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 331 | static int __devinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | ide_dma_sgiioc4(ide_hwif_t * hwif, unsigned long dma_base) |
| 333 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 334 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 335 | void __iomem *virt_dma_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | int num_ports = sizeof (ioc4_dma_regs_t); |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 337 | void *pad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
| 339 | printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name, |
| 340 | dma_base, dma_base + num_ports - 1); |
| 341 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 342 | if (!request_mem_region(dma_base, num_ports, hwif->name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | printk(KERN_ERR |
| 344 | "%s(%s) -- ERROR, Addresses 0x%p to 0x%p " |
| 345 | "ALREADY in use\n", |
| 346 | __FUNCTION__, hwif->name, (void *) dma_base, |
| 347 | (void *) dma_base + num_ports - 1); |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 348 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
| 350 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 351 | virt_dma_base = ioremap(dma_base, num_ports); |
| 352 | if (virt_dma_base == NULL) { |
| 353 | printk(KERN_ERR |
| 354 | "%s(%s) -- ERROR, Unable to map addresses 0x%lx to 0x%lx\n", |
| 355 | __FUNCTION__, hwif->name, dma_base, dma_base + num_ports - 1); |
| 356 | goto dma_remap_failure; |
| 357 | } |
| 358 | hwif->dma_base = (unsigned long) virt_dma_base; |
| 359 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 360 | hwif->dmatable_cpu = pci_alloc_consistent(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
| 362 | &hwif->dmatable_dma); |
| 363 | |
| 364 | if (!hwif->dmatable_cpu) |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 365 | goto dma_pci_alloc_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | hwif->sg_max_nents = IOC4_PRD_ENTRIES; |
| 368 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 369 | pad = pci_alloc_consistent(dev, IOC4_IDE_CACHELINE_SIZE, |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 370 | (dma_addr_t *) &(hwif->dma_status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 372 | if (pad) { |
| 373 | ide_set_hwifdata(hwif, pad); |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 374 | return 0; |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 375 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 377 | pci_free_consistent(dev, IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | hwif->dmatable_cpu, hwif->dmatable_dma); |
| 379 | printk(KERN_INFO |
| 380 | "%s() -- Error! Unable to allocate DMA Maps for drive %s\n", |
| 381 | __FUNCTION__, hwif->name); |
| 382 | printk(KERN_INFO |
| 383 | "Changing from DMA to PIO mode for Drive %s\n", hwif->name); |
| 384 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 385 | dma_pci_alloc_failure: |
| 386 | iounmap(virt_dma_base); |
| 387 | |
| 388 | dma_remap_failure: |
| 389 | release_mem_region(dma_base, num_ports); |
| 390 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 391 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | /* Initializes the IOC4 DMA Engine */ |
| 395 | static void |
| 396 | sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive) |
| 397 | { |
| 398 | u32 ioc4_dma; |
| 399 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 400 | unsigned long dma_base = hwif->dma_base; |
| 401 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | u32 dma_addr, ending_dma_addr; |
| 403 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 404 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
| 406 | if (ioc4_dma & IOC4_S_DMA_ACTIVE) { |
| 407 | printk(KERN_WARNING |
| 408 | "%s(%s):Warning!! DMA from previous transfer was still active\n", |
| 409 | __FUNCTION__, drive->name); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 410 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 412 | |
| 413 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 414 | printk(KERN_ERR |
| 415 | "%s(%s) : IOC4 Dma STOP bit is still 1\n", |
| 416 | __FUNCTION__, drive->name); |
| 417 | } |
| 418 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 419 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | if (ioc4_dma & IOC4_S_DMA_ERROR) { |
| 421 | printk(KERN_WARNING |
| 422 | "%s(%s) : Warning!! - DMA Error during Previous" |
| 423 | " transfer | status 0x%x\n", |
| 424 | __FUNCTION__, drive->name, ioc4_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 425 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 427 | |
| 428 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 429 | printk(KERN_ERR |
| 430 | "%s(%s) : IOC4 DMA STOP bit is still 1\n", |
| 431 | __FUNCTION__, drive->name); |
| 432 | } |
| 433 | |
| 434 | /* Address of the Scatter Gather List */ |
| 435 | dma_addr = cpu_to_le32(hwif->dmatable_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 436 | writel(dma_addr, (void __iomem *)(dma_base + IOC4_DMA_PTR_L * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
| 438 | /* Address of the Ending DMA */ |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 439 | memset(ide_get_hwifdata(hwif), 0, IOC4_IDE_CACHELINE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | ending_dma_addr = cpu_to_le32(hwif->dma_status); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 441 | 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] | 442 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 443 | writel(dma_direction, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | drive->waiting_for_dma = 1; |
| 445 | } |
| 446 | |
| 447 | /* IOC4 Scatter Gather list Format */ |
| 448 | /* 128 Bit entries to support 64 bit addresses in the future */ |
| 449 | /* The Scatter Gather list Entry should be in the BIG-ENDIAN Format */ |
| 450 | /* --------------------------------------------------------------------- */ |
| 451 | /* | Upper 32 bits - Zero | Lower 32 bits- address | */ |
| 452 | /* --------------------------------------------------------------------- */ |
| 453 | /* | Upper 32 bits - Zero |EOL| 15 unused | 16 Bit Length| */ |
| 454 | /* --------------------------------------------------------------------- */ |
| 455 | /* Creates the scatter gather list, DMA Table */ |
| 456 | static unsigned int |
| 457 | sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir) |
| 458 | { |
| 459 | ide_hwif_t *hwif = HWIF(drive); |
| 460 | unsigned int *table = hwif->dmatable_cpu; |
| 461 | unsigned int count = 0, i = 1; |
| 462 | struct scatterlist *sg; |
| 463 | |
| 464 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
| 465 | |
| 466 | if (!i) |
| 467 | return 0; /* sglist of length Zero */ |
| 468 | |
| 469 | sg = hwif->sg_table; |
| 470 | while (i && sg_dma_len(sg)) { |
| 471 | dma_addr_t cur_addr; |
| 472 | int cur_len; |
| 473 | cur_addr = sg_dma_address(sg); |
| 474 | cur_len = sg_dma_len(sg); |
| 475 | |
| 476 | while (cur_len) { |
| 477 | if (count++ >= IOC4_PRD_ENTRIES) { |
| 478 | printk(KERN_WARNING |
| 479 | "%s: DMA table too small\n", |
| 480 | drive->name); |
| 481 | goto use_pio_instead; |
| 482 | } else { |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 483 | u32 bcount = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | 0x10000 - (cur_addr & 0xffff); |
| 485 | |
| 486 | if (bcount > cur_len) |
| 487 | bcount = cur_len; |
| 488 | |
| 489 | /* put the addr, length in |
| 490 | * the IOC4 dma-table format */ |
| 491 | *table = 0x0; |
| 492 | table++; |
| 493 | *table = cpu_to_be32(cur_addr); |
| 494 | table++; |
| 495 | *table = 0x0; |
| 496 | table++; |
| 497 | |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 498 | *table = cpu_to_be32(bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | table++; |
| 500 | |
| 501 | cur_addr += bcount; |
| 502 | cur_len -= bcount; |
| 503 | } |
| 504 | } |
| 505 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 506 | sg = sg_next(sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | i--; |
| 508 | } |
| 509 | |
| 510 | if (count) { |
| 511 | table--; |
| 512 | *table |= cpu_to_be32(0x80000000); |
| 513 | return count; |
| 514 | } |
| 515 | |
| 516 | use_pio_instead: |
Bartlomiej Zolnierkiewicz | f6fb786 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 517 | ide_destroy_dmatable(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | |
| 519 | return 0; /* revert to PIO for this request */ |
| 520 | } |
| 521 | |
| 522 | static int sgiioc4_ide_dma_setup(ide_drive_t *drive) |
| 523 | { |
| 524 | struct request *rq = HWGROUP(drive)->rq; |
| 525 | unsigned int count = 0; |
| 526 | int ddir; |
| 527 | |
| 528 | if (rq_data_dir(rq)) |
| 529 | ddir = PCI_DMA_TODEVICE; |
| 530 | else |
| 531 | ddir = PCI_DMA_FROMDEVICE; |
| 532 | |
| 533 | if (!(count = sgiioc4_build_dma_table(drive, rq, ddir))) { |
| 534 | /* try PIO instead of DMA */ |
| 535 | ide_map_sg(drive, rq); |
| 536 | return 1; |
| 537 | } |
| 538 | |
| 539 | if (rq_data_dir(rq)) |
| 540 | /* Writes TO the IOC4 FROM Main Memory */ |
| 541 | ddir = IOC4_DMA_READ; |
| 542 | else |
| 543 | /* Writes FROM the IOC4 TO Main Memory */ |
| 544 | ddir = IOC4_DMA_WRITE; |
| 545 | |
| 546 | sgiioc4_configure_for_dma(ddir, drive); |
| 547 | |
| 548 | return 0; |
| 549 | } |
| 550 | |
| 551 | static void __devinit |
| 552 | ide_init_sgiioc4(ide_hwif_t * hwif) |
| 553 | { |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 554 | hwif->mmio = 1; |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 555 | hwif->set_pio_mode = NULL; /* Sets timing for PIO mode */ |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 556 | hwif->set_dma_mode = &sgiioc4_set_dma_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | hwif->selectproc = NULL;/* Use the default routine to select drive */ |
| 558 | hwif->reset_poll = NULL;/* No HBA specific reset_poll needed */ |
| 559 | hwif->pre_reset = NULL; /* No HBA specific pre_set needed */ |
| 560 | hwif->resetproc = &sgiioc4_resetproc;/* Reset DMA engine, |
| 561 | clear interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | hwif->maskproc = &sgiioc4_maskproc; /* Mask on/off NIEN register */ |
| 563 | hwif->quirkproc = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Bartlomiej Zolnierkiewicz | b9d9e61 | 2007-10-13 17:47:52 +0200 | [diff] [blame] | 565 | hwif->INB = &sgiioc4_INB; |
| 566 | |
| 567 | if (hwif->dma_base == 0) |
| 568 | return; |
| 569 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 570 | hwif->dma_host_set = &sgiioc4_dma_host_set; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | hwif->dma_setup = &sgiioc4_ide_dma_setup; |
| 572 | hwif->dma_start = &sgiioc4_ide_dma_start; |
| 573 | hwif->ide_dma_end = &sgiioc4_ide_dma_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | hwif->ide_dma_test_irq = &sgiioc4_ide_dma_test_irq; |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 575 | hwif->dma_lost_irq = &sgiioc4_dma_lost_irq; |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 576 | hwif->dma_timeout = &ide_dma_timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | } |
| 578 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 579 | static const struct ide_port_info sgiioc4_port_info __devinitdata = { |
| 580 | .chipset = ide_pci, |
| 581 | .host_flags = IDE_HFLAG_NO_DMA | /* no SFF-style DMA */ |
| 582 | IDE_HFLAG_NO_AUTOTUNE, |
| 583 | .mwdma_mask = ATA_MWDMA2_ONLY, |
| 584 | }; |
| 585 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 593 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 594 | hw_regs_t hw; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 595 | struct ide_port_info d = sgiioc4_port_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
Bartlomiej Zolnierkiewicz | e7ee1d5 | 2008-04-26 17:36:33 +0200 | [diff] [blame^] | 597 | hwif = ide_find_port(); |
| 598 | if (hwif == NULL) { |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 599 | printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", |
| 600 | DRV_NAME); |
Jeremy Higdon | deb5e5c | 2005-12-15 02:10:35 +0100 | [diff] [blame] | 601 | return -ENOMEM; |
| 602 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
| 604 | /* Get the CmdBlk and CtrlBlk Base Registers */ |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 605 | bar0 = pci_resource_start(dev, 0); |
| 606 | virt_base = ioremap(bar0, pci_resource_len(dev, 0)); |
| 607 | if (virt_base == NULL) { |
| 608 | 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] | 609 | DRV_NAME, bar0); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 610 | return -ENOMEM; |
| 611 | } |
| 612 | cmd_base = (unsigned long) virt_base + IOC4_CMD_OFFSET; |
| 613 | ctl = (unsigned long) virt_base + IOC4_CTRL_OFFSET; |
| 614 | irqport = (unsigned long) virt_base + IOC4_INTR_OFFSET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET; |
| 616 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 617 | cmd_phys_base = bar0 + IOC4_CMD_OFFSET; |
| 618 | if (!request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE, |
| 619 | hwif->name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | printk(KERN_ERR |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 621 | "%s : %s -- ERROR, Addresses " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | "0x%p to 0x%p ALREADY in use\n", |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 623 | __FUNCTION__, hwif->name, (void *) cmd_phys_base, |
| 624 | (void *) cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | return -ENOMEM; |
| 626 | } |
| 627 | |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 628 | /* Initialize the IO registers */ |
| 629 | memset(&hw, 0, sizeof(hw)); |
| 630 | sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 631 | hw.irq = dev->irq; |
| 632 | hw.chipset = ide_pci; |
| 633 | hw.dev = &dev->dev; |
| 634 | ide_init_port_hw(hwif, &hw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 636 | hwif->dev = &dev->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 638 | /* The IOC4 uses MMIO rather than Port IO. */ |
| 639 | default_hwif_mmiops(hwif); |
| 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | /* Initializing chipset IRQ Registers */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 642 | writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 644 | if (dma_base == 0 || ide_dma_sgiioc4(hwif, dma_base)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | printk(KERN_INFO "%s: %s Bus-Master DMA disabled\n", |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 646 | hwif->name, DRV_NAME); |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 647 | d.mwdma_mask = 0; |
| 648 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | |
Bartlomiej Zolnierkiewicz | b9d9e61 | 2007-10-13 17:47:52 +0200 | [diff] [blame] | 650 | ide_init_sgiioc4(hwif); |
| 651 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 652 | idx[0] = hwif->index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 654 | if (ide_device_add(idx, &d)) |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 655 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | return 0; |
| 658 | } |
| 659 | |
| 660 | static unsigned int __devinit |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 661 | pci_init_sgiioc4(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | int ret; |
| 664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | 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] | 666 | DRV_NAME, pci_name(dev), dev->revision); |
| 667 | |
| 668 | if (dev->revision < IOC4_SUPPORTED_FIRMWARE_REV) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | printk(KERN_ERR "Skipping %s IDE controller in slot %s: " |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 670 | "firmware is obsolete - please upgrade to " |
| 671 | "revision46 or higher\n", |
| 672 | DRV_NAME, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | ret = -EAGAIN; |
| 674 | goto out; |
| 675 | } |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 676 | ret = sgiioc4_ide_setup_pci_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | out: |
| 678 | return ret; |
| 679 | } |
| 680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | int |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 682 | ioc4_ide_attach_one(struct ioc4_driver_data *idd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | { |
Brent Casavant | f5befce | 2006-06-23 02:05:52 -0700 | [diff] [blame] | 684 | /* PCI-RT does not bring out IDE connection. |
| 685 | * Do not attach to this particular IOC4. |
| 686 | */ |
| 687 | if (idd->idd_variant == IOC4_VARIANT_PCI_RT) |
| 688 | return 0; |
| 689 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 690 | return pci_init_sgiioc4(idd->idd_pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | } |
| 692 | |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 693 | static struct ioc4_submodule ioc4_ide_submodule = { |
| 694 | .is_name = "IOC4_ide", |
| 695 | .is_owner = THIS_MODULE, |
| 696 | .is_probe = ioc4_ide_attach_one, |
| 697 | /* .is_remove = ioc4_ide_remove_one, */ |
| 698 | }; |
| 699 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame] | 700 | static int __init ioc4_ide_init(void) |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 701 | { |
| 702 | return ioc4_register_submodule(&ioc4_ide_submodule); |
| 703 | } |
| 704 | |
Brent Casavant | 59f1480 | 2006-10-17 00:09:25 -0700 | [diff] [blame] | 705 | late_initcall(ioc4_ide_init); /* Call only after IDE init is done */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 707 | MODULE_AUTHOR("Aniket Malatpure/Jeremy Higdon"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | MODULE_DESCRIPTION("IDE PCI driver module for SGI IOC4 Base-IO Card"); |
| 709 | MODULE_LICENSE("GPL"); |