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 | ff07488 | 2008-07-15 21:21:50 +0200 | [diff] [blame] | 114 | writeb(ATA_DEVCTL_OBS | (mask ? 2 : 0), |
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 | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 130 | static u8 sgiioc4_read_status(ide_hwif_t *); |
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 | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 144 | * Using sgiioc4_read_status to read the Status register has a |
| 145 | * side effect of clearing the interrupt. The first read should |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 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 | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 150 | u8 stat = sgiioc4_read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | int count = 0; |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 152 | |
| 153 | stat = sgiioc4_read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | while ((stat & 0x80) && (count++ < 100)) { |
| 155 | udelay(1); |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 156 | stat = sgiioc4_read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | if (intr_reg & 0x02) { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 160 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | /* Error when transferring DMA data on PCI bus */ |
| 162 | u32 pci_err_addr_low, pci_err_addr_high, |
| 163 | pci_stat_cmd_reg; |
| 164 | |
| 165 | pci_err_addr_low = |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 166 | readl((void __iomem *)io_ports->irq_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | pci_err_addr_high = |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 168 | readl((void __iomem *)(io_ports->irq_addr + 4)); |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 169 | pci_read_config_dword(dev, PCI_COMMAND, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | &pci_stat_cmd_reg); |
| 171 | printk(KERN_ERR |
| 172 | "%s(%s) : PCI Bus Error when doing DMA:" |
| 173 | " status-cmd reg is 0x%x\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 174 | __func__, drive->name, pci_stat_cmd_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | printk(KERN_ERR |
| 176 | "%s(%s) : PCI Error Address is 0x%x%x\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 177 | __func__, drive->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | pci_err_addr_high, pci_err_addr_low); |
| 179 | /* Clear the PCI Error indicator */ |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 180 | pci_write_config_dword(dev, PCI_COMMAND, 0x00000146); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | /* Clear the Interrupt, Error bits on the IOC4 */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 184 | writel(0x03, (void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 186 | intr_reg = readl((void __iomem *)other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | return intr_reg & 3; |
| 190 | } |
| 191 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 192 | static void sgiioc4_dma_start(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
| 194 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 195 | unsigned long ioc4_dma_addr = hwif->dma_base + IOC4_DMA_CTRL * 4; |
| 196 | unsigned int reg = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | unsigned int temp_reg = reg | IOC4_S_DMA_START; |
| 198 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 199 | writel(temp_reg, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | static u32 |
| 203 | sgiioc4_ide_dma_stop(ide_hwif_t *hwif, u64 dma_base) |
| 204 | { |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 205 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | u32 ioc4_dma; |
| 207 | int count; |
| 208 | |
| 209 | count = 0; |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 210 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | while ((ioc4_dma & IOC4_S_DMA_STOP) && (count++ < 200)) { |
| 212 | udelay(1); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 213 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | return ioc4_dma; |
| 216 | } |
| 217 | |
| 218 | /* Stops the IOC4 DMA Engine */ |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 219 | static int sgiioc4_dma_end(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 235 | __func__, drive->name, ioc4_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 254 | printk(KERN_ERR "%s(%s) : DMA incomplete\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 267 | __func__, drive->name, bc_dev, bc_mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 282 | static int sgiioc4_dma_test_irq(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { |
| 284 | return sgiioc4_checkirq(HWIF(drive)); |
| 285 | } |
| 286 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 287 | static void sgiioc4_dma_host_set(ide_drive_t *drive, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 289 | if (!on) |
| 290 | sgiioc4_clearirq(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
| 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | static void |
| 294 | sgiioc4_resetproc(ide_drive_t * drive) |
| 295 | { |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 296 | sgiioc4_dma_end(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | sgiioc4_clearirq(drive); |
| 298 | } |
| 299 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 300 | static void |
| 301 | sgiioc4_dma_lost_irq(ide_drive_t * drive) |
| 302 | { |
| 303 | sgiioc4_resetproc(drive); |
| 304 | |
| 305 | ide_dma_lost_irq(drive); |
| 306 | } |
| 307 | |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 308 | static u8 sgiioc4_read_status(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 310 | unsigned long port = hwif->io_ports.status_addr; |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 311 | u8 reg = (u8) readb((void __iomem *) port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */ |
| 314 | if (reg & 0x51) { /* Not busy...check for interrupt */ |
| 315 | unsigned long other_ir = port - 0x110; |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 316 | unsigned int intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | /* Clear the Interrupt, Error bits on the IOC4 */ |
| 319 | if (intr_reg & 0x03) { |
Jeremy Higdon | a835fa7 | 2006-05-30 21:27:07 -0700 | [diff] [blame] | 320 | writel(0x03, (void __iomem *) other_ir); |
| 321 | intr_reg = (u32) readl((void __iomem *) other_ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | } |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | return reg; |
| 327 | } |
| 328 | |
| 329 | /* Creates a dma map for the scatter-gather list entries */ |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 330 | static int __devinit |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 331 | 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] | 332 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 333 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 334 | unsigned long dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET; |
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 | |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 339 | if (dma_base == 0) |
| 340 | return -1; |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name, |
| 343 | dma_base, dma_base + num_ports - 1); |
| 344 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 345 | if (!request_mem_region(dma_base, num_ports, hwif->name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | printk(KERN_ERR |
| 347 | "%s(%s) -- ERROR, Addresses 0x%p to 0x%p " |
| 348 | "ALREADY in use\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 349 | __func__, hwif->name, (void *) dma_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | (void *) dma_base + num_ports - 1); |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 351 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 354 | virt_dma_base = ioremap(dma_base, num_ports); |
| 355 | if (virt_dma_base == NULL) { |
| 356 | printk(KERN_ERR |
| 357 | "%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] | 358 | __func__, hwif->name, dma_base, dma_base + num_ports - 1); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 359 | goto dma_remap_failure; |
| 360 | } |
| 361 | hwif->dma_base = (unsigned long) virt_dma_base; |
| 362 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 363 | hwif->dmatable_cpu = pci_alloc_consistent(dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
| 365 | &hwif->dmatable_dma); |
| 366 | |
| 367 | if (!hwif->dmatable_cpu) |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 368 | goto dma_pci_alloc_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
| 370 | hwif->sg_max_nents = IOC4_PRD_ENTRIES; |
| 371 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 372 | pad = pci_alloc_consistent(dev, IOC4_IDE_CACHELINE_SIZE, |
Bartlomiej Zolnierkiewicz | 912ef6d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 373 | (dma_addr_t *)&hwif->extra_base); |
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 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 379 | pci_free_consistent(dev, IOC4_PRD_ENTRIES * IOC4_PRD_BYTES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | hwif->dmatable_cpu, hwif->dmatable_dma); |
| 381 | printk(KERN_INFO |
| 382 | "%s() -- Error! Unable to allocate DMA Maps for drive %s\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 383 | __func__, hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | printk(KERN_INFO |
| 385 | "Changing from DMA to PIO mode for Drive %s\n", hwif->name); |
| 386 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 387 | dma_pci_alloc_failure: |
| 388 | iounmap(virt_dma_base); |
| 389 | |
| 390 | dma_remap_failure: |
| 391 | release_mem_region(dma_base, num_ports); |
| 392 | |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 393 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | /* Initializes the IOC4 DMA Engine */ |
| 397 | static void |
| 398 | sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive) |
| 399 | { |
| 400 | u32 ioc4_dma; |
| 401 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 402 | unsigned long dma_base = hwif->dma_base; |
| 403 | unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | u32 dma_addr, ending_dma_addr; |
| 405 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 406 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
| 408 | if (ioc4_dma & IOC4_S_DMA_ACTIVE) { |
| 409 | printk(KERN_WARNING |
| 410 | "%s(%s):Warning!! DMA from previous transfer was still active\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 411 | __func__, drive->name); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 412 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 414 | |
| 415 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 416 | printk(KERN_ERR |
| 417 | "%s(%s) : IOC4 Dma STOP bit is still 1\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 418 | __func__, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } |
| 420 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 421 | ioc4_dma = readl((void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | if (ioc4_dma & IOC4_S_DMA_ERROR) { |
| 423 | printk(KERN_WARNING |
| 424 | "%s(%s) : Warning!! - DMA Error during Previous" |
| 425 | " transfer | status 0x%x\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 426 | __func__, drive->name, ioc4_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 427 | writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base); |
| 429 | |
| 430 | if (ioc4_dma & IOC4_S_DMA_STOP) |
| 431 | printk(KERN_ERR |
| 432 | "%s(%s) : IOC4 DMA STOP bit is still 1\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 433 | __func__, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
| 435 | |
| 436 | /* Address of the Scatter Gather List */ |
| 437 | dma_addr = cpu_to_le32(hwif->dmatable_dma); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 438 | writel(dma_addr, (void __iomem *)(dma_base + IOC4_DMA_PTR_L * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | /* Address of the Ending DMA */ |
Sergei Shtylyov | 3f63c5e | 2006-10-03 01:14:25 -0700 | [diff] [blame] | 441 | memset(ide_get_hwifdata(hwif), 0, IOC4_IDE_CACHELINE_SIZE); |
Bartlomiej Zolnierkiewicz | 912ef6d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 442 | ending_dma_addr = cpu_to_le32(hwif->extra_base); |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 443 | 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] | 444 | |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 445 | writel(dma_direction, (void __iomem *)ioc4_dma_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | drive->waiting_for_dma = 1; |
| 447 | } |
| 448 | |
| 449 | /* IOC4 Scatter Gather list Format */ |
| 450 | /* 128 Bit entries to support 64 bit addresses in the future */ |
| 451 | /* The Scatter Gather list Entry should be in the BIG-ENDIAN Format */ |
| 452 | /* --------------------------------------------------------------------- */ |
| 453 | /* | Upper 32 bits - Zero | Lower 32 bits- address | */ |
| 454 | /* --------------------------------------------------------------------- */ |
| 455 | /* | Upper 32 bits - Zero |EOL| 15 unused | 16 Bit Length| */ |
| 456 | /* --------------------------------------------------------------------- */ |
| 457 | /* Creates the scatter gather list, DMA Table */ |
| 458 | static unsigned int |
| 459 | sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir) |
| 460 | { |
| 461 | ide_hwif_t *hwif = HWIF(drive); |
| 462 | unsigned int *table = hwif->dmatable_cpu; |
| 463 | unsigned int count = 0, i = 1; |
| 464 | struct scatterlist *sg; |
| 465 | |
| 466 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
| 467 | |
| 468 | if (!i) |
| 469 | return 0; /* sglist of length Zero */ |
| 470 | |
| 471 | sg = hwif->sg_table; |
| 472 | while (i && sg_dma_len(sg)) { |
| 473 | dma_addr_t cur_addr; |
| 474 | int cur_len; |
| 475 | cur_addr = sg_dma_address(sg); |
| 476 | cur_len = sg_dma_len(sg); |
| 477 | |
| 478 | while (cur_len) { |
| 479 | if (count++ >= IOC4_PRD_ENTRIES) { |
| 480 | printk(KERN_WARNING |
| 481 | "%s: DMA table too small\n", |
| 482 | drive->name); |
| 483 | goto use_pio_instead; |
| 484 | } else { |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 485 | u32 bcount = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | 0x10000 - (cur_addr & 0xffff); |
| 487 | |
| 488 | if (bcount > cur_len) |
| 489 | bcount = cur_len; |
| 490 | |
| 491 | /* put the addr, length in |
| 492 | * the IOC4 dma-table format */ |
| 493 | *table = 0x0; |
| 494 | table++; |
| 495 | *table = cpu_to_be32(cur_addr); |
| 496 | table++; |
| 497 | *table = 0x0; |
| 498 | table++; |
| 499 | |
Jeremy Higdon | 0271fc2 | 2006-02-02 00:00:46 -0800 | [diff] [blame] | 500 | *table = cpu_to_be32(bcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | table++; |
| 502 | |
| 503 | cur_addr += bcount; |
| 504 | cur_len -= bcount; |
| 505 | } |
| 506 | } |
| 507 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 508 | sg = sg_next(sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | i--; |
| 510 | } |
| 511 | |
| 512 | if (count) { |
| 513 | table--; |
| 514 | *table |= cpu_to_be32(0x80000000); |
| 515 | return count; |
| 516 | } |
| 517 | |
| 518 | use_pio_instead: |
Bartlomiej Zolnierkiewicz | f6fb786 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 519 | ide_destroy_dmatable(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | |
| 521 | return 0; /* revert to PIO for this request */ |
| 522 | } |
| 523 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 524 | static int sgiioc4_dma_setup(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | { |
| 526 | struct request *rq = HWGROUP(drive)->rq; |
| 527 | unsigned int count = 0; |
| 528 | int ddir; |
| 529 | |
| 530 | if (rq_data_dir(rq)) |
| 531 | ddir = PCI_DMA_TODEVICE; |
| 532 | else |
| 533 | ddir = PCI_DMA_FROMDEVICE; |
| 534 | |
| 535 | if (!(count = sgiioc4_build_dma_table(drive, rq, ddir))) { |
| 536 | /* try PIO instead of DMA */ |
| 537 | ide_map_sg(drive, rq); |
| 538 | return 1; |
| 539 | } |
| 540 | |
| 541 | if (rq_data_dir(rq)) |
| 542 | /* Writes TO the IOC4 FROM Main Memory */ |
| 543 | ddir = IOC4_DMA_READ; |
| 544 | else |
| 545 | /* Writes FROM the IOC4 TO Main Memory */ |
| 546 | ddir = IOC4_DMA_WRITE; |
| 547 | |
| 548 | sgiioc4_configure_for_dma(ddir, drive); |
| 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 553 | static const struct ide_tp_ops sgiioc4_tp_ops = { |
| 554 | .exec_command = ide_exec_command, |
| 555 | .read_status = sgiioc4_read_status, |
| 556 | .read_altstatus = ide_read_altstatus, |
| 557 | .read_sff_dma_status = ide_read_sff_dma_status, |
| 558 | |
| 559 | .set_irq = ide_set_irq, |
| 560 | |
| 561 | .tf_load = ide_tf_load, |
| 562 | .tf_read = ide_tf_read, |
| 563 | |
| 564 | .input_data = ide_input_data, |
| 565 | .output_data = ide_output_data, |
| 566 | }; |
| 567 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 568 | static const struct ide_port_ops sgiioc4_port_ops = { |
| 569 | .set_dma_mode = sgiioc4_set_dma_mode, |
| 570 | /* reset DMA engine, clear IRQs */ |
| 571 | .resetproc = sgiioc4_resetproc, |
| 572 | /* mask on/off NIEN register */ |
| 573 | .maskproc = sgiioc4_maskproc, |
| 574 | }; |
| 575 | |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 576 | static const struct ide_dma_ops sgiioc4_dma_ops = { |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 577 | .dma_host_set = sgiioc4_dma_host_set, |
| 578 | .dma_setup = sgiioc4_dma_setup, |
| 579 | .dma_start = sgiioc4_dma_start, |
| 580 | .dma_end = sgiioc4_dma_end, |
| 581 | .dma_test_irq = sgiioc4_dma_test_irq, |
| 582 | .dma_lost_irq = sgiioc4_dma_lost_irq, |
| 583 | .dma_timeout = ide_dma_timeout, |
| 584 | }; |
| 585 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 586 | static const struct ide_port_info sgiioc4_port_info __devinitdata = { |
Bartlomiej Zolnierkiewicz | eb3aff5 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 587 | .name = DRV_NAME, |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 588 | .chipset = ide_pci, |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 589 | .init_dma = ide_dma_sgiioc4, |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 590 | .tp_ops = &sgiioc4_tp_ops, |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 591 | .port_ops = &sgiioc4_port_ops, |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 592 | .dma_ops = &sgiioc4_dma_ops, |
Bartlomiej Zolnierkiewicz | c5dd43e | 2008-04-28 23:44:37 +0200 | [diff] [blame] | 593 | .host_flags = IDE_HFLAG_MMIO, |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 594 | .mwdma_mask = ATA_MWDMA2_ONLY, |
| 595 | }; |
| 596 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | static int __devinit |
Bartlomiej Zolnierkiewicz | ca1997c | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 598 | sgiioc4_ide_setup_pci_device(struct pci_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | { |
Bartlomiej Zolnierkiewicz | 04216fa | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 600 | unsigned long cmd_base, irqport; |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 601 | unsigned long bar0, cmd_phys_base, ctl; |
| 602 | void __iomem *virt_base; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 603 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 604 | hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 605 | struct ide_port_info d = sgiioc4_port_info; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 606 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | /* Get the CmdBlk and CtrlBlk Base Registers */ |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 609 | bar0 = pci_resource_start(dev, 0); |
| 610 | virt_base = ioremap(bar0, pci_resource_len(dev, 0)); |
| 611 | if (virt_base == NULL) { |
| 612 | 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] | 613 | DRV_NAME, bar0); |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 614 | return -ENOMEM; |
| 615 | } |
| 616 | cmd_base = (unsigned long) virt_base + IOC4_CMD_OFFSET; |
| 617 | ctl = (unsigned long) virt_base + IOC4_CTRL_OFFSET; |
| 618 | irqport = (unsigned long) virt_base + IOC4_INTR_OFFSET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 620 | cmd_phys_base = bar0 + IOC4_CMD_OFFSET; |
| 621 | if (!request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE, |
Bartlomiej Zolnierkiewicz | 0139701 | 2008-07-16 20:33:41 +0200 | [diff] [blame] | 622 | DRV_NAME)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | printk(KERN_ERR |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 624 | "%s : %s -- ERROR, Addresses " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | "0x%p to 0x%p ALREADY in use\n", |
Bartlomiej Zolnierkiewicz | 0139701 | 2008-07-16 20:33:41 +0200 | [diff] [blame] | 626 | __func__, DRV_NAME, (void *) cmd_phys_base, |
John Keller | 1678df3 | 2006-08-31 21:27:51 -0700 | [diff] [blame] | 627 | (void *) cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | return -ENOMEM; |
| 629 | } |
| 630 | |
Bartlomiej Zolnierkiewicz | 8f8e848 | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 631 | /* Initialize the IO registers */ |
| 632 | memset(&hw, 0, sizeof(hw)); |
| 633 | sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 634 | hw.irq = dev->irq; |
| 635 | hw.chipset = ide_pci; |
| 636 | hw.dev = &dev->dev; |
Bartlomiej Zolnierkiewicz | ce30e40 | 2008-07-16 20:33:44 +0200 | [diff] [blame] | 637 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | /* Initializing chipset IRQ Registers */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 639 | writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 641 | host = ide_host_alloc(&d, hws); |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 642 | if (host == NULL) { |
| 643 | rc = -ENOMEM; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 644 | goto err; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 645 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 647 | rc = ide_host_register(host, &d, hws); |
| 648 | if (rc) |
| 649 | goto err_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
| 651 | return 0; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 652 | err_free: |
| 653 | ide_host_free(host); |
Bartlomiej Zolnierkiewicz | ce30e40 | 2008-07-16 20:33:44 +0200 | [diff] [blame] | 654 | err: |
| 655 | release_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE); |
| 656 | iounmap(virt_base); |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 657 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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"); |