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 */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 101 | for (i = 0; i <= 7; i++) |
| 102 | hw->io_ports_array[i] = reg + i * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
| 104 | if (ctrl_port) |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 105 | hw->io_ports.ctl_addr = ctrl_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | if (irq_port) |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 108 | hw->io_ports.irq_addr = irq_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 115 | (void __iomem *)drive->hwif->io_ports.ctl_addr); |
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 = |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 122 | hwif->io_ports.irq_addr + 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); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 137 | struct ide_io_ports *io_ports = &hwif->io_ports; |
| 138 | unsigned long other_ir = io_ports->irq_addr + (IOC4_INTR_REG << 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 150 | u8 stat = sgiioc4_INB(io_ports->status_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | int count = 0; |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 152 | stat = sgiioc4_INB(io_ports->status_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | while ((stat & 0x80) && (count++ < 100)) { |
| 154 | udelay(1); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 155 | stat = sgiioc4_INB(io_ports->status_addr); |
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 | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 165 | readl((void __iomem *)io_ports->irq_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | pci_err_addr_high = |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 167 | readl((void __iomem *)(io_ports->irq_addr + 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", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 173 | __func__, drive->name, pci_stat_cmd_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | printk(KERN_ERR |
| 175 | "%s(%s) : PCI Error Address is 0x%x%x\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 176 | __func__, drive->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 191 | static void sgiioc4_dma_start(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 218 | static int sgiioc4_dma_end(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | { |
| 220 | u32 ioc4_dma, bc_dev, bc_mem, num, valid = 0, cnt = 0; |
| 221 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 222 | unsigned long dma_base = hwif->dma_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | int dma_stat = 0; |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 224 | unsigned long *ending_dma = ide_get_hwifdata(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 226 | 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] | 227 | |
| 228 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 229 | |
| 230 | if (ioc4_dma & IOC4_S_DMA_STOP) { |
| 231 | printk(KERN_ERR |
| 232 | "%s(%s): IOC4 DMA STOP bit is still 1 :" |
| 233 | "ioc4_dma_reg 0x%x\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 234 | __func__, drive->name, ioc4_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | dma_stat = 1; |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * The IOC4 will DMA 1's to the ending dma area to indicate that |
| 240 | * previous data DMA is complete. This is necessary because of relaxed |
| 241 | * ordering between register reads and DMA writes on the Altix. |
| 242 | */ |
| 243 | while ((cnt++ < 200) && (!valid)) { |
| 244 | for (num = 0; num < 16; num++) { |
| 245 | if (ending_dma[num]) { |
| 246 | valid = 1; |
| 247 | break; |
| 248 | } |
| 249 | } |
| 250 | udelay(1); |
| 251 | } |
| 252 | if (!valid) { |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 253 | printk(KERN_ERR "%s(%s) : DMA incomplete\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | drive->name); |
| 255 | dma_stat = 1; |
| 256 | } |
| 257 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 258 | bc_dev = readl((void __iomem *)(dma_base + IOC4_BC_DEV * 4)); |
| 259 | bc_mem = readl((void __iomem *)(dma_base + IOC4_BC_MEM * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | if ((bc_dev & 0x01FF) || (bc_mem & 0x1FF)) { |
| 262 | if (bc_dev > bc_mem + 8) { |
| 263 | printk(KERN_ERR |
| 264 | "%s(%s): WARNING!! byte_count_dev %d " |
| 265 | "!= byte_count_mem %d\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 266 | __func__, drive->name, bc_dev, bc_mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | } |
| 268 | } |
| 269 | |
| 270 | drive->waiting_for_dma = 0; |
| 271 | ide_destroy_dmatable(drive); |
| 272 | |
| 273 | return dma_stat; |
| 274 | } |
| 275 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 276 | 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] | 277 | { |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 278 | } |
| 279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | /* returns 1 if dma irq issued, 0 otherwise */ |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 281 | static int sgiioc4_dma_test_irq(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
| 283 | return sgiioc4_checkirq(HWIF(drive)); |
| 284 | } |
| 285 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 286 | static void sgiioc4_dma_host_set(ide_drive_t *drive, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 288 | if (!on) |
| 289 | sgiioc4_clearirq(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | static void |
| 293 | sgiioc4_resetproc(ide_drive_t * drive) |
| 294 | { |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 295 | sgiioc4_dma_end(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | sgiioc4_clearirq(drive); |
| 297 | } |
| 298 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 299 | static void |
| 300 | sgiioc4_dma_lost_irq(ide_drive_t * drive) |
| 301 | { |
| 302 | sgiioc4_resetproc(drive); |
| 303 | |
| 304 | ide_dma_lost_irq(drive); |
| 305 | } |
| 306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | static u8 |
| 308 | sgiioc4_INB(unsigned long port) |
| 309 | { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 310 | u8 reg = (u8) readb((void __iomem *) port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
| 312 | if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */ |
| 313 | if (reg & 0x51) { /* Not busy...check for interrupt */ |
| 314 | unsigned long other_ir = port - 0x110; |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 315 | unsigned int intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | |
| 317 | /* Clear the Interrupt, Error bits on the IOC4 */ |
| 318 | if (intr_reg & 0x03) { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 319 | writel(0x03, (void __iomem *) other_ir); |
| 320 | intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | return reg; |
| 326 | } |
| 327 | |
| 328 | /* Creates a dma map for the scatter-gather list entries */ |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 329 | static int __devinit |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 330 | ide_dma_sgiioc4(ide_hwif_t *hwif, const struct ide_port_info *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 332 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 333 | unsigned long dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET; |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 334 | void __iomem *virt_dma_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | int num_ports = sizeof (ioc4_dma_regs_t); |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 336 | void *pad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 338 | if (dma_base == 0) |
| 339 | return -1; |
| 340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 348 | __func__, hwif->name, (void *) dma_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 357 | __func__, hwif->name, dma_base, dma_base + num_ports - 1); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 358 | goto dma_remap_failure; |
| 359 | } |
| 360 | hwif->dma_base = (unsigned long) virt_dma_base; |
| 361 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 362 | hwif->dmatable_cpu = pci_alloc_consistent(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 371 | pad = pci_alloc_consistent(dev, IOC4_IDE_CACHELINE_SIZE, |
Bartlomiej Zolnierkiewicz | 912ef6d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 372 | (dma_addr_t *)&hwif->extra_base); |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 373 | if (pad) { |
| 374 | ide_set_hwifdata(hwif, pad); |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 375 | return 0; |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 376 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 378 | pci_free_consistent(dev, IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | hwif->dmatable_cpu, hwif->dmatable_dma); |
| 380 | printk(KERN_INFO |
| 381 | "%s() -- Error! Unable to allocate DMA Maps for drive %s\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 382 | __func__, hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | printk(KERN_INFO |
| 384 | "Changing from DMA to PIO mode for Drive %s\n", hwif->name); |
| 385 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 386 | dma_pci_alloc_failure: |
| 387 | iounmap(virt_dma_base); |
| 388 | |
| 389 | dma_remap_failure: |
| 390 | release_mem_region(dma_base, num_ports); |
| 391 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 392 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | /* Initializes the IOC4 DMA Engine */ |
| 396 | static void |
| 397 | sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive) |
| 398 | { |
| 399 | u32 ioc4_dma; |
| 400 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 401 | unsigned long dma_base = hwif->dma_base; |
| 402 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | u32 dma_addr, ending_dma_addr; |
| 404 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 405 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | if (ioc4_dma & IOC4_S_DMA_ACTIVE) { |
| 408 | printk(KERN_WARNING |
| 409 | "%s(%s):Warning!! DMA from previous transfer was still active\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 410 | __func__, drive->name); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 411 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 413 | |
| 414 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 415 | printk(KERN_ERR |
| 416 | "%s(%s) : IOC4 Dma STOP bit is still 1\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 417 | __func__, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | } |
| 419 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 420 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | if (ioc4_dma & IOC4_S_DMA_ERROR) { |
| 422 | printk(KERN_WARNING |
| 423 | "%s(%s) : Warning!! - DMA Error during Previous" |
| 424 | " transfer | status 0x%x\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 425 | __func__, drive->name, ioc4_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 426 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 428 | |
| 429 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 430 | printk(KERN_ERR |
| 431 | "%s(%s) : IOC4 DMA STOP bit is still 1\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 432 | __func__, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | /* Address of the Scatter Gather List */ |
| 436 | dma_addr = cpu_to_le32(hwif->dmatable_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 437 | writel(dma_addr, (void __iomem *)(dma_base + IOC4_DMA_PTR_L * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | /* Address of the Ending DMA */ |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 440 | memset(ide_get_hwifdata(hwif), 0, IOC4_IDE_CACHELINE_SIZE); |
Bartlomiej Zolnierkiewicz | 912ef6d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 441 | ending_dma_addr = cpu_to_le32(hwif->extra_base); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 442 | 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] | 443 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 444 | writel(dma_direction, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | drive->waiting_for_dma = 1; |
| 446 | } |
| 447 | |
| 448 | /* IOC4 Scatter Gather list Format */ |
| 449 | /* 128 Bit entries to support 64 bit addresses in the future */ |
| 450 | /* The Scatter Gather list Entry should be in the BIG-ENDIAN Format */ |
| 451 | /* --------------------------------------------------------------------- */ |
| 452 | /* | Upper 32 bits - Zero | Lower 32 bits- address | */ |
| 453 | /* --------------------------------------------------------------------- */ |
| 454 | /* | Upper 32 bits - Zero |EOL| 15 unused | 16 Bit Length| */ |
| 455 | /* --------------------------------------------------------------------- */ |
| 456 | /* Creates the scatter gather list, DMA Table */ |
| 457 | static unsigned int |
| 458 | sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir) |
| 459 | { |
| 460 | ide_hwif_t *hwif = HWIF(drive); |
| 461 | unsigned int *table = hwif->dmatable_cpu; |
| 462 | unsigned int count = 0, i = 1; |
| 463 | struct scatterlist *sg; |
| 464 | |
| 465 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
| 466 | |
| 467 | if (!i) |
| 468 | return 0; /* sglist of length Zero */ |
| 469 | |
| 470 | sg = hwif->sg_table; |
| 471 | while (i && sg_dma_len(sg)) { |
| 472 | dma_addr_t cur_addr; |
| 473 | int cur_len; |
| 474 | cur_addr = sg_dma_address(sg); |
| 475 | cur_len = sg_dma_len(sg); |
| 476 | |
| 477 | while (cur_len) { |
| 478 | if (count++ >= IOC4_PRD_ENTRIES) { |
| 479 | printk(KERN_WARNING |
| 480 | "%s: DMA table too small\n", |
| 481 | drive->name); |
| 482 | goto use_pio_instead; |
| 483 | } else { |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 484 | u32 bcount = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | 0x10000 - (cur_addr & 0xffff); |
| 486 | |
| 487 | if (bcount > cur_len) |
| 488 | bcount = cur_len; |
| 489 | |
| 490 | /* put the addr, length in |
| 491 | * the IOC4 dma-table format */ |
| 492 | *table = 0x0; |
| 493 | table++; |
| 494 | *table = cpu_to_be32(cur_addr); |
| 495 | table++; |
| 496 | *table = 0x0; |
| 497 | table++; |
| 498 | |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 499 | *table = cpu_to_be32(bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | table++; |
| 501 | |
| 502 | cur_addr += bcount; |
| 503 | cur_len -= bcount; |
| 504 | } |
| 505 | } |
| 506 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 507 | sg = sg_next(sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | i--; |
| 509 | } |
| 510 | |
| 511 | if (count) { |
| 512 | table--; |
| 513 | *table |= cpu_to_be32(0x80000000); |
| 514 | return count; |
| 515 | } |
| 516 | |
| 517 | use_pio_instead: |
Bartlomiej Zolnierkiewicz | f6fb786 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 518 | ide_destroy_dmatable(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
| 520 | return 0; /* revert to PIO for this request */ |
| 521 | } |
| 522 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 523 | static int sgiioc4_dma_setup(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | { |
| 525 | struct request *rq = HWGROUP(drive)->rq; |
| 526 | unsigned int count = 0; |
| 527 | int ddir; |
| 528 | |
| 529 | if (rq_data_dir(rq)) |
| 530 | ddir = PCI_DMA_TODEVICE; |
| 531 | else |
| 532 | ddir = PCI_DMA_FROMDEVICE; |
| 533 | |
| 534 | if (!(count = sgiioc4_build_dma_table(drive, rq, ddir))) { |
| 535 | /* try PIO instead of DMA */ |
| 536 | ide_map_sg(drive, rq); |
| 537 | return 1; |
| 538 | } |
| 539 | |
| 540 | if (rq_data_dir(rq)) |
| 541 | /* Writes TO the IOC4 FROM Main Memory */ |
| 542 | ddir = IOC4_DMA_READ; |
| 543 | else |
| 544 | /* Writes FROM the IOC4 TO Main Memory */ |
| 545 | ddir = IOC4_DMA_WRITE; |
| 546 | |
| 547 | sgiioc4_configure_for_dma(ddir, drive); |
| 548 | |
| 549 | return 0; |
| 550 | } |
| 551 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 552 | static const struct ide_port_ops sgiioc4_port_ops = { |
| 553 | .set_dma_mode = sgiioc4_set_dma_mode, |
| 554 | /* reset DMA engine, clear IRQs */ |
| 555 | .resetproc = sgiioc4_resetproc, |
| 556 | /* mask on/off NIEN register */ |
| 557 | .maskproc = sgiioc4_maskproc, |
| 558 | }; |
| 559 | |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 560 | static const struct ide_dma_ops sgiioc4_dma_ops = { |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 561 | .dma_host_set = sgiioc4_dma_host_set, |
| 562 | .dma_setup = sgiioc4_dma_setup, |
| 563 | .dma_start = sgiioc4_dma_start, |
| 564 | .dma_end = sgiioc4_dma_end, |
| 565 | .dma_test_irq = sgiioc4_dma_test_irq, |
| 566 | .dma_lost_irq = sgiioc4_dma_lost_irq, |
| 567 | .dma_timeout = ide_dma_timeout, |
| 568 | }; |
| 569 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 570 | static const struct ide_port_info sgiioc4_port_info __devinitdata = { |
| 571 | .chipset = ide_pci, |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 572 | .init_dma = ide_dma_sgiioc4, |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 573 | .port_ops = &sgiioc4_port_ops, |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 574 | .dma_ops = &sgiioc4_dma_ops, |
Bartlomiej Zolnierkiewicz | c5dd43e | 2008-04-28 23:44:37 +0200 | [diff] [blame] | 575 | .host_flags = IDE_HFLAG_MMIO, |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 576 | .mwdma_mask = ATA_MWDMA2_ONLY, |
| 577 | }; |
| 578 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | static int __devinit |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 580 | sgiioc4_ide_setup_pci_device(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 582 | unsigned long cmd_base, irqport; |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 583 | unsigned long bar0, cmd_phys_base, ctl; |
| 584 | void __iomem *virt_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 586 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 587 | hw_regs_t hw; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 588 | struct ide_port_info d = sgiioc4_port_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
Bartlomiej Zolnierkiewicz | e7ee1d5 | 2008-04-26 17:36:33 +0200 | [diff] [blame] | 590 | hwif = ide_find_port(); |
| 591 | if (hwif == NULL) { |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 592 | printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", |
| 593 | DRV_NAME); |
Jeremy Higdon | deb5e5c | 2005-12-15 02:10:35 +0100 | [diff] [blame] | 594 | return -ENOMEM; |
| 595 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
| 597 | /* Get the CmdBlk and CtrlBlk Base Registers */ |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 598 | bar0 = pci_resource_start(dev, 0); |
| 599 | virt_base = ioremap(bar0, pci_resource_len(dev, 0)); |
| 600 | if (virt_base == NULL) { |
| 601 | 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] | 602 | DRV_NAME, bar0); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 603 | return -ENOMEM; |
| 604 | } |
| 605 | cmd_base = (unsigned long) virt_base + IOC4_CMD_OFFSET; |
| 606 | ctl = (unsigned long) virt_base + IOC4_CTRL_OFFSET; |
| 607 | irqport = (unsigned long) virt_base + IOC4_INTR_OFFSET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 609 | cmd_phys_base = bar0 + IOC4_CMD_OFFSET; |
| 610 | if (!request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE, |
| 611 | hwif->name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | printk(KERN_ERR |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 613 | "%s : %s -- ERROR, Addresses " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | "0x%p to 0x%p ALREADY in use\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 615 | __func__, hwif->name, (void *) cmd_phys_base, |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 616 | (void *) cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | return -ENOMEM; |
| 618 | } |
| 619 | |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 620 | /* Initialize the IO registers */ |
| 621 | memset(&hw, 0, sizeof(hw)); |
| 622 | sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 623 | hw.irq = dev->irq; |
| 624 | hw.chipset = ide_pci; |
| 625 | hw.dev = &dev->dev; |
| 626 | ide_init_port_hw(hwif, &hw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 628 | hwif->dev = &dev->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 630 | /* The IOC4 uses MMIO rather than Port IO. */ |
| 631 | default_hwif_mmiops(hwif); |
| 632 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | /* Initializing chipset IRQ Registers */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 634 | writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 636 | hwif->INB = &sgiioc4_INB; |
Bartlomiej Zolnierkiewicz | b9d9e61 | 2007-10-13 17:47:52 +0200 | [diff] [blame] | 637 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 638 | idx[0] = hwif->index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 640 | if (ide_device_add(idx, &d)) |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 641 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | |
| 643 | return 0; |
| 644 | } |
| 645 | |
| 646 | static unsigned int __devinit |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 647 | pci_init_sgiioc4(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | int ret; |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | 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] | 652 | DRV_NAME, pci_name(dev), dev->revision); |
| 653 | |
| 654 | if (dev->revision < IOC4_SUPPORTED_FIRMWARE_REV) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | printk(KERN_ERR "Skipping %s IDE controller in slot %s: " |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 656 | "firmware is obsolete - please upgrade to " |
| 657 | "revision46 or higher\n", |
| 658 | DRV_NAME, pci_name(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | ret = -EAGAIN; |
| 660 | goto out; |
| 661 | } |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 662 | ret = sgiioc4_ide_setup_pci_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | out: |
| 664 | return ret; |
| 665 | } |
| 666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | int |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 668 | ioc4_ide_attach_one(struct ioc4_driver_data *idd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | { |
Brent Casavant | f5befce | 2006-06-23 02:05:52 -0700 | [diff] [blame] | 670 | /* PCI-RT does not bring out IDE connection. |
| 671 | * Do not attach to this particular IOC4. |
| 672 | */ |
| 673 | if (idd->idd_variant == IOC4_VARIANT_PCI_RT) |
| 674 | return 0; |
| 675 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 676 | return pci_init_sgiioc4(idd->idd_pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
| 678 | |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 679 | static struct ioc4_submodule ioc4_ide_submodule = { |
| 680 | .is_name = "IOC4_ide", |
| 681 | .is_owner = THIS_MODULE, |
| 682 | .is_probe = ioc4_ide_attach_one, |
| 683 | /* .is_remove = ioc4_ide_remove_one, */ |
| 684 | }; |
| 685 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame] | 686 | static int __init ioc4_ide_init(void) |
Brent Casavant | 22329b5 | 2005-06-21 17:15:59 -0700 | [diff] [blame] | 687 | { |
| 688 | return ioc4_register_submodule(&ioc4_ide_submodule); |
| 689 | } |
| 690 | |
Brent Casavant | 59f1480 | 2006-10-17 00:09:25 -0700 | [diff] [blame] | 691 | late_initcall(ioc4_ide_init); /* Call only after IDE init is done */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 693 | MODULE_AUTHOR("Aniket Malatpure/Jeremy Higdon"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | MODULE_DESCRIPTION("IDE PCI driver module for SGI IOC4 Base-IO Card"); |
| 695 | MODULE_LICENSE("GPL"); |