Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 1 | /* |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 2 | * BRIEF MODULE DESCRIPTION |
| 3 | * AMD Alchemy Au1xxx IDE interface routines over the Static Bus |
| 4 | * |
| 5 | * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it under |
| 8 | * the terms of the GNU General Public License as published by the Free Software |
| 9 | * Foundation; either version 2 of the License, or (at your option) any later |
| 10 | * version. |
| 11 | * |
| 12 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 13 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR |
| 15 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 16 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 17 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 18 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 19 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 20 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 21 | * POSSIBILITY OF SUCH DAMAGE. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License along with |
| 24 | * this program; if not, write to the Free Software Foundation, Inc., |
| 25 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | * |
| 27 | * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE |
| 28 | * Interface and Linux Device Driver" Application Note. |
| 29 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 30 | #include <linux/types.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/delay.h> |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 34 | #include <linux/platform_device.h> |
| 35 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 36 | #include <linux/init.h> |
| 37 | #include <linux/ide.h> |
| 38 | #include <linux/sysdev.h> |
| 39 | |
| 40 | #include <linux/dma-mapping.h> |
| 41 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 42 | #include "ide-timing.h" |
| 43 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 44 | #include <asm/io.h> |
| 45 | #include <asm/mach-au1x00/au1xxx.h> |
| 46 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
| 47 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 48 | #include <asm/mach-au1x00/au1xxx_ide.h> |
| 49 | |
| 50 | #define DRV_NAME "au1200-ide" |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 51 | #define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" |
| 52 | |
| 53 | /* enable the burstmode in the dbdma */ |
| 54 | #define IDE_AU1XXX_BURSTMODE 1 |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 55 | |
| 56 | static _auide_hwif auide_hwif; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 57 | static int dbdma_init_done; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 58 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 59 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 60 | |
| 61 | void auide_insw(unsigned long port, void *addr, u32 count) |
| 62 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 63 | _auide_hwif *ahwif = &auide_hwif; |
| 64 | chan_tab_t *ctp; |
| 65 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 66 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 67 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
| 68 | DDMA_FLAGS_NOIE)) { |
| 69 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 70 | return; |
| 71 | } |
| 72 | ctp = *((chan_tab_t **)ahwif->rx_chan); |
| 73 | dp = ctp->cur_ptr; |
| 74 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 75 | ; |
| 76 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | void auide_outsw(unsigned long port, void *addr, u32 count) |
| 80 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 81 | _auide_hwif *ahwif = &auide_hwif; |
| 82 | chan_tab_t *ctp; |
| 83 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 84 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 85 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
| 86 | count << 1, DDMA_FLAGS_NOIE)) { |
| 87 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 88 | return; |
| 89 | } |
| 90 | ctp = *((chan_tab_t **)ahwif->tx_chan); |
| 91 | dp = ctp->cur_ptr; |
| 92 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 93 | ; |
| 94 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 95 | } |
| 96 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 97 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 98 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 99 | static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 100 | { |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 101 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 102 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 103 | /* set pio mode! */ |
| 104 | switch(pio) { |
| 105 | case 0: |
| 106 | mem_sttime = SBC_IDE_TIMING(PIO0); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 107 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 108 | /* set configuration for RCS2# */ |
| 109 | mem_stcfg |= TS_MASK; |
| 110 | mem_stcfg &= ~TCSOE_MASK; |
| 111 | mem_stcfg &= ~TOECS_MASK; |
| 112 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; |
| 113 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 114 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 115 | case 1: |
| 116 | mem_sttime = SBC_IDE_TIMING(PIO1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 117 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 118 | /* set configuration for RCS2# */ |
| 119 | mem_stcfg |= TS_MASK; |
| 120 | mem_stcfg &= ~TCSOE_MASK; |
| 121 | mem_stcfg &= ~TOECS_MASK; |
| 122 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; |
| 123 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 124 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 125 | case 2: |
| 126 | mem_sttime = SBC_IDE_TIMING(PIO2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 127 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 128 | /* set configuration for RCS2# */ |
| 129 | mem_stcfg &= ~TS_MASK; |
| 130 | mem_stcfg &= ~TCSOE_MASK; |
| 131 | mem_stcfg &= ~TOECS_MASK; |
| 132 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; |
| 133 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 134 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 135 | case 3: |
| 136 | mem_sttime = SBC_IDE_TIMING(PIO3); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 137 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 138 | /* set configuration for RCS2# */ |
| 139 | mem_stcfg &= ~TS_MASK; |
| 140 | mem_stcfg &= ~TCSOE_MASK; |
| 141 | mem_stcfg &= ~TOECS_MASK; |
| 142 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 143 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 144 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 145 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 146 | case 4: |
| 147 | mem_sttime = SBC_IDE_TIMING(PIO4); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 148 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 149 | /* set configuration for RCS2# */ |
| 150 | mem_stcfg &= ~TS_MASK; |
| 151 | mem_stcfg &= ~TCSOE_MASK; |
| 152 | mem_stcfg &= ~TOECS_MASK; |
| 153 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | au_writel(mem_sttime,MEM_STTIME2); |
| 158 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 159 | } |
| 160 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 161 | static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 162 | { |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 163 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 164 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 165 | switch(speed) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 166 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 167 | case XFER_MW_DMA_2: |
| 168 | mem_sttime = SBC_IDE_TIMING(MDMA2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 169 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 170 | /* set configuration for RCS2# */ |
| 171 | mem_stcfg &= ~TS_MASK; |
| 172 | mem_stcfg &= ~TCSOE_MASK; |
| 173 | mem_stcfg &= ~TOECS_MASK; |
| 174 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 175 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 176 | break; |
| 177 | case XFER_MW_DMA_1: |
| 178 | mem_sttime = SBC_IDE_TIMING(MDMA1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 179 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 180 | /* set configuration for RCS2# */ |
| 181 | mem_stcfg &= ~TS_MASK; |
| 182 | mem_stcfg &= ~TCSOE_MASK; |
| 183 | mem_stcfg &= ~TOECS_MASK; |
| 184 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; |
| 185 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 186 | break; |
| 187 | case XFER_MW_DMA_0: |
| 188 | mem_sttime = SBC_IDE_TIMING(MDMA0); |
| 189 | |
| 190 | /* set configuration for RCS2# */ |
| 191 | mem_stcfg |= TS_MASK; |
| 192 | mem_stcfg &= ~TCSOE_MASK; |
| 193 | mem_stcfg &= ~TOECS_MASK; |
| 194 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; |
| 195 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 196 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 197 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 198 | } |
Bartlomiej Zolnierkiewicz | a523a17 | 2007-02-17 02:40:23 +0100 | [diff] [blame] | 199 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 200 | au_writel(mem_sttime,MEM_STTIME2); |
| 201 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | /* |
| 205 | * Multi-Word DMA + DbDMA functions |
| 206 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 207 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 208 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 209 | static int auide_build_dmatable(ide_drive_t *drive) |
| 210 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 211 | int i, iswrite, count = 0; |
| 212 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 213 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 214 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 215 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 216 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 217 | struct scatterlist *sg; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 218 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 219 | iswrite = (rq_data_dir(rq) == WRITE); |
| 220 | /* Save for interrupt context */ |
| 221 | ahwif->drive = drive; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 222 | |
Bartlomiej Zolnierkiewicz | 062f9f0 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 223 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 224 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 225 | if (!i) |
| 226 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 227 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 228 | /* fill the descriptors */ |
| 229 | sg = hwif->sg_table; |
| 230 | while (i && sg_dma_len(sg)) { |
| 231 | u32 cur_addr; |
| 232 | u32 cur_len; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 233 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 234 | cur_addr = sg_dma_address(sg); |
| 235 | cur_len = sg_dma_len(sg); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 236 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 237 | while (cur_len) { |
| 238 | u32 flags = DDMA_FLAGS_NOIE; |
| 239 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 240 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 241 | if (++count >= PRD_ENTRIES) { |
| 242 | printk(KERN_WARNING "%s: DMA table too small\n", |
| 243 | drive->name); |
| 244 | goto use_pio_instead; |
| 245 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 246 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 247 | /* Lets enable intr for the last descriptor only */ |
| 248 | if (1==i) |
| 249 | flags = DDMA_FLAGS_IE; |
| 250 | else |
| 251 | flags = DDMA_FLAGS_NOIE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 252 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 253 | if (iswrite) { |
| 254 | if(!put_source_flags(ahwif->tx_chan, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 255 | (void*) sg_virt(sg), |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 256 | tc, flags)) { |
| 257 | printk(KERN_ERR "%s failed %d\n", |
| 258 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 259 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 260 | } else |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 261 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 262 | if(!put_dest_flags(ahwif->rx_chan, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 263 | (void*) sg_virt(sg), |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 264 | tc, flags)) { |
| 265 | printk(KERN_ERR "%s failed %d\n", |
| 266 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 267 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 268 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 269 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 270 | cur_addr += tc; |
| 271 | cur_len -= tc; |
| 272 | } |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 273 | sg = sg_next(sg); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 274 | i--; |
| 275 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 276 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 277 | if (count) |
| 278 | return 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 279 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 280 | use_pio_instead: |
Bartlomiej Zolnierkiewicz | 062f9f0 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 281 | ide_destroy_dmatable(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 282 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 283 | return 0; /* revert to PIO for this request */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | static int auide_dma_end(ide_drive_t *drive) |
| 287 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 288 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 289 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 290 | if (hwif->sg_nents) { |
Bartlomiej Zolnierkiewicz | 062f9f0 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 291 | ide_destroy_dmatable(drive); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 292 | hwif->sg_nents = 0; |
| 293 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 294 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 295 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | static void auide_dma_start(ide_drive_t *drive ) |
| 299 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 300 | } |
| 301 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 302 | |
| 303 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) |
| 304 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 305 | /* issue cmd to drive */ |
| 306 | ide_execute_command(drive, command, &ide_dma_intr, |
| 307 | (2*WAIT_CMD), NULL); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | static int auide_dma_setup(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 311 | { |
| 312 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 313 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 314 | if (!auide_build_dmatable(drive)) { |
| 315 | ide_map_sg(drive, rq); |
| 316 | return 1; |
| 317 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 318 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 319 | drive->waiting_for_dma = 1; |
| 320 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 321 | } |
| 322 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 323 | static u8 auide_mdma_filter(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 324 | { |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 325 | /* |
| 326 | * FIXME: ->white_list and ->black_list are based on completely bogus |
| 327 | * ->ide_dma_check implementation which didn't set neither the host |
| 328 | * controller timings nor the device for the desired transfer mode. |
| 329 | * |
| 330 | * They should be either removed or 0x00 MWDMA mask should be |
| 331 | * returned for devices on the ->black_list. |
| 332 | */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 333 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 334 | if (dbdma_init_done == 0) { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 335 | auide_hwif.white_list = ide_in_drive_list(drive->id, |
| 336 | dma_white_list); |
| 337 | auide_hwif.black_list = ide_in_drive_list(drive->id, |
| 338 | dma_black_list); |
| 339 | auide_hwif.drive = drive; |
| 340 | auide_ddma_init(&auide_hwif); |
| 341 | dbdma_init_done = 1; |
| 342 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 343 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 344 | /* Is the drive in our DMA black list? */ |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 345 | if (auide_hwif.black_list) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 346 | printk(KERN_WARNING "%s: Disabling DMA for %s (blacklisted)\n", |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 347 | drive->name, drive->id->model); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 348 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 349 | return drive->hwif->mwdma_mask; |
| 350 | } |
| 351 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 352 | static int auide_dma_test_irq(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 353 | { |
| 354 | if (drive->waiting_for_dma == 0) |
| 355 | printk(KERN_WARNING "%s: ide_dma_test_irq \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 356 | called while not waiting\n", drive->name); |
| 357 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 358 | /* If dbdma didn't execute the STOP command yet, the |
| 359 | * active bit is still set |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 360 | */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 361 | drive->waiting_for_dma++; |
| 362 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { |
| 363 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 364 | complete\n", drive->name); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 365 | return 1; |
| 366 | } |
| 367 | udelay(10); |
| 368 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 369 | } |
| 370 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 371 | static void auide_dma_host_set(ide_drive_t *drive, int on) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 372 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 373 | } |
| 374 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 375 | static void auide_dma_lost_irq(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 376 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 377 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 378 | } |
| 379 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 380 | static void auide_ddma_tx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 381 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 382 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 383 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 384 | } |
| 385 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 386 | static void auide_ddma_rx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 387 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 388 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 389 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 390 | } |
| 391 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 392 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 393 | |
| 394 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
| 395 | { |
| 396 | dev->dev_id = dev_id; |
| 397 | dev->dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 398 | dev->dev_intlevel = 0; |
| 399 | dev->dev_intpolarity = 0; |
| 400 | dev->dev_tsize = tsize; |
| 401 | dev->dev_devwidth = devwidth; |
| 402 | dev->dev_flags = flags; |
| 403 | } |
| 404 | |
| 405 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 406 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 407 | static void auide_dma_timeout(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 408 | { |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 409 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 410 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 411 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 412 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 413 | if (hwif->ide_dma_test_irq(drive)) |
| 414 | return; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 415 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 416 | hwif->ide_dma_end(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 417 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 418 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 419 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 420 | static int auide_ddma_init(_auide_hwif *auide) { |
| 421 | |
| 422 | dbdev_tab_t source_dev_tab, target_dev_tab; |
| 423 | u32 dev_id, tsize, devwidth, flags; |
| 424 | ide_hwif_t *hwif = auide->hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 425 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 426 | dev_id = AU1XXX_ATA_DDMA_REQ; |
| 427 | |
| 428 | if (auide->white_list || auide->black_list) { |
| 429 | tsize = 8; |
| 430 | devwidth = 32; |
| 431 | } |
| 432 | else { |
| 433 | tsize = 1; |
| 434 | devwidth = 16; |
| 435 | |
| 436 | printk(KERN_ERR "au1xxx-ide: %s is not on ide driver whitelist.\n",auide_hwif.drive->id->model); |
| 437 | printk(KERN_ERR " please read 'Documentation/mips/AU1xxx_IDE.README'"); |
| 438 | } |
| 439 | |
| 440 | #ifdef IDE_AU1XXX_BURSTMODE |
| 441 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
| 442 | #else |
| 443 | flags = DEV_FLAGS_SYNC; |
| 444 | #endif |
| 445 | |
| 446 | /* setup dev_tab for tx channel */ |
| 447 | auide_init_dbdma_dev( &source_dev_tab, |
| 448 | dev_id, |
| 449 | tsize, devwidth, DEV_FLAGS_OUT | flags); |
| 450 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 451 | |
| 452 | auide_init_dbdma_dev( &source_dev_tab, |
| 453 | dev_id, |
| 454 | tsize, devwidth, DEV_FLAGS_IN | flags); |
| 455 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 456 | |
| 457 | /* We also need to add a target device for the DMA */ |
| 458 | auide_init_dbdma_dev( &target_dev_tab, |
| 459 | (u32)DSCR_CMD0_ALWAYS, |
| 460 | tsize, devwidth, DEV_FLAGS_ANYUSE); |
| 461 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); |
| 462 | |
| 463 | /* Get a channel for TX */ |
| 464 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, |
| 465 | auide->tx_dev_id, |
| 466 | auide_ddma_tx_callback, |
| 467 | (void*)auide); |
| 468 | |
| 469 | /* Get a channel for RX */ |
| 470 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 471 | auide->target_dev_id, |
| 472 | auide_ddma_rx_callback, |
| 473 | (void*)auide); |
| 474 | |
| 475 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 476 | NUM_DESCRIPTORS); |
| 477 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 478 | NUM_DESCRIPTORS); |
| 479 | |
Bartlomiej Zolnierkiewicz | 5df37c3 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 480 | hwif->dmatable_cpu = dma_alloc_coherent(hwif->dev, |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 481 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
| 482 | &hwif->dmatable_dma, GFP_KERNEL); |
| 483 | |
| 484 | au1xxx_dbdma_start( auide->tx_chan ); |
| 485 | au1xxx_dbdma_start( auide->rx_chan ); |
| 486 | |
| 487 | return 0; |
| 488 | } |
| 489 | #else |
| 490 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 491 | static int auide_ddma_init( _auide_hwif *auide ) |
| 492 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 493 | dbdev_tab_t source_dev_tab; |
| 494 | int flags; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 495 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 496 | #ifdef IDE_AU1XXX_BURSTMODE |
| 497 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 498 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 499 | flags = DEV_FLAGS_SYNC; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 500 | #endif |
| 501 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 502 | /* setup dev_tab for tx channel */ |
| 503 | auide_init_dbdma_dev( &source_dev_tab, |
| 504 | (u32)DSCR_CMD0_ALWAYS, |
| 505 | 8, 32, DEV_FLAGS_OUT | flags); |
| 506 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 507 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 508 | auide_init_dbdma_dev( &source_dev_tab, |
| 509 | (u32)DSCR_CMD0_ALWAYS, |
| 510 | 8, 32, DEV_FLAGS_IN | flags); |
| 511 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 512 | |
| 513 | /* Get a channel for TX */ |
| 514 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, |
| 515 | auide->tx_dev_id, |
| 516 | NULL, |
| 517 | (void*)auide); |
| 518 | |
| 519 | /* Get a channel for RX */ |
| 520 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 521 | DSCR_CMD0_ALWAYS, |
| 522 | NULL, |
| 523 | (void*)auide); |
| 524 | |
| 525 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 526 | NUM_DESCRIPTORS); |
| 527 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 528 | NUM_DESCRIPTORS); |
| 529 | |
| 530 | au1xxx_dbdma_start( auide->tx_chan ); |
| 531 | au1xxx_dbdma_start( auide->rx_chan ); |
| 532 | |
| 533 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 534 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 535 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 536 | |
| 537 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) |
| 538 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 539 | int i; |
| 540 | unsigned long *ata_regs = hw->io_ports; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 541 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 542 | /* FIXME? */ |
| 543 | for (i = 0; i < IDE_CONTROL_OFFSET; i++) { |
| 544 | *ata_regs++ = ahwif->regbase + (i << AU1XXX_ATA_REG_OFFSET); |
| 545 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 546 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 547 | /* set the Alternative Status register */ |
| 548 | *ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 549 | } |
| 550 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 551 | static const struct ide_port_info au1xxx_port_info = { |
| 552 | .host_flags = IDE_HFLAG_POST_SET_MODE | |
| 553 | IDE_HFLAG_NO_DMA | /* no SFF-style DMA */ |
| 554 | IDE_HFLAG_UNMASK_IRQS, |
| 555 | .pio_mask = ATA_PIO4, |
| 556 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 557 | .mwdma_mask = ATA_MWDMA2, |
| 558 | #endif |
| 559 | }; |
| 560 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 561 | static int au_ide_probe(struct device *dev) |
| 562 | { |
| 563 | struct platform_device *pdev = to_platform_device(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 564 | _auide_hwif *ahwif = &auide_hwif; |
| 565 | ide_hwif_t *hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 566 | struct resource *res; |
| 567 | int ret = 0; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 568 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 569 | hw_regs_t hw; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 570 | |
| 571 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 572 | char *mode = "MWDMA2"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 573 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 574 | char *mode = "PIO+DDMA(offload)"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 575 | #endif |
| 576 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 577 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 578 | ahwif->irq = platform_get_irq(pdev, 0); |
| 579 | |
| 580 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 581 | |
| 582 | if (res == NULL) { |
| 583 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); |
| 584 | ret = -ENODEV; |
| 585 | goto out; |
| 586 | } |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 587 | if (ahwif->irq < 0) { |
| 588 | pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); |
| 589 | ret = -ENODEV; |
| 590 | goto out; |
| 591 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 592 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 593 | if (!request_mem_region (res->start, res->end-res->start, pdev->name)) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 594 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 595 | ret = -EBUSY; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 596 | goto out; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 597 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 598 | |
| 599 | ahwif->regbase = (u32)ioremap(res->start, res->end-res->start); |
| 600 | if (ahwif->regbase == 0) { |
| 601 | ret = -ENOMEM; |
| 602 | goto out; |
| 603 | } |
| 604 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 605 | /* FIXME: This might possibly break PCMCIA IDE devices */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 606 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 607 | hwif = &ide_hwifs[pdev->id]; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 608 | |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 609 | memset(&hw, 0, sizeof(hw)); |
| 610 | auide_setup_ports(&hw, ahwif); |
Bartlomiej Zolnierkiewicz | aa79a2f | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 611 | hw.irq = ahwif->irq; |
Bartlomiej Zolnierkiewicz | ed1f788 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 612 | hw.dev = dev; |
Bartlomiej Zolnierkiewicz | aa79a2f | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 613 | hw.chipset = ide_au1xxx; |
| 614 | |
| 615 | ide_init_port_hw(hwif, &hw); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 616 | |
Bartlomiej Zolnierkiewicz | 5df37c3 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 617 | hwif->dev = dev; |
| 618 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 619 | /* hold should be on in all cases */ |
| 620 | hwif->hold = 1; |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 621 | |
| 622 | hwif->mmio = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 623 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 624 | /* If the user has selected DDMA assisted copies, |
| 625 | then set up a few local I/O function entry points |
| 626 | */ |
| 627 | |
| 628 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 629 | hwif->INSW = auide_insw; |
| 630 | hwif->OUTSW = auide_outsw; |
| 631 | #endif |
| 632 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 633 | hwif->set_pio_mode = &au1xxx_set_pio_mode; |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 634 | hwif->set_dma_mode = &auide_set_dma_mode; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 635 | |
| 636 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 637 | hwif->dma_timeout = &auide_dma_timeout; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 638 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 639 | hwif->mdma_filter = &auide_mdma_filter; |
| 640 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 641 | hwif->dma_host_set = &auide_dma_host_set; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 642 | hwif->dma_exec_cmd = &auide_dma_exec_cmd; |
| 643 | hwif->dma_start = &auide_dma_start; |
| 644 | hwif->ide_dma_end = &auide_dma_end; |
| 645 | hwif->dma_setup = &auide_dma_setup; |
| 646 | hwif->ide_dma_test_irq = &auide_dma_test_irq; |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 647 | hwif->dma_lost_irq = &auide_dma_lost_irq; |
Bartlomiej Zolnierkiewicz | a42bcc0 | 2008-01-26 20:13:07 +0100 | [diff] [blame] | 648 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 649 | hwif->select_data = 0; /* no chipset-specific code */ |
| 650 | hwif->config_data = 0; /* no chipset-specific code */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 651 | |
Bartlomiej Zolnierkiewicz | bd38dd3 | 2008-02-02 19:56:29 +0100 | [diff] [blame] | 652 | hwif->no_io_32bit = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 653 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 654 | auide_hwif.hwif = hwif; |
| 655 | hwif->hwif_data = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 656 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 657 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 658 | auide_ddma_init(&auide_hwif); |
| 659 | dbdma_init_done = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 660 | #endif |
| 661 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 662 | idx[0] = hwif->index; |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 663 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 664 | ide_device_add(idx, &au1xxx_port_info); |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 665 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 666 | dev_set_drvdata(dev, hwif); |
| 667 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 668 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 669 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 670 | out: |
| 671 | return ret; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | static int au_ide_remove(struct device *dev) |
| 675 | { |
| 676 | struct platform_device *pdev = to_platform_device(dev); |
| 677 | struct resource *res; |
| 678 | ide_hwif_t *hwif = dev_get_drvdata(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 679 | _auide_hwif *ahwif = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 680 | |
Bartlomiej Zolnierkiewicz | 909f436 | 2008-02-02 19:56:39 +0100 | [diff] [blame^] | 681 | ide_unregister(hwif->index, 0, 0); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 682 | |
| 683 | iounmap((void *)ahwif->regbase); |
| 684 | |
| 685 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 686 | release_mem_region(res->start, res->end - res->start); |
| 687 | |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | static struct device_driver au1200_ide_driver = { |
| 692 | .name = "au1200-ide", |
| 693 | .bus = &platform_bus_type, |
| 694 | .probe = au_ide_probe, |
| 695 | .remove = au_ide_remove, |
| 696 | }; |
| 697 | |
| 698 | static int __init au_ide_init(void) |
| 699 | { |
| 700 | return driver_register(&au1200_ide_driver); |
| 701 | } |
| 702 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 703 | static void __exit au_ide_exit(void) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 704 | { |
| 705 | driver_unregister(&au1200_ide_driver); |
| 706 | } |
| 707 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 708 | MODULE_LICENSE("GPL"); |
| 709 | MODULE_DESCRIPTION("AU1200 IDE driver"); |
| 710 | |
| 711 | module_init(au_ide_init); |
| 712 | module_exit(au_ide_exit); |