Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/mips/au1xxx-ide.c version 01.30.00 Aug. 02 2005 |
| 3 | * |
| 4 | * BRIEF MODULE DESCRIPTION |
| 5 | * AMD Alchemy Au1xxx IDE interface routines over the Static Bus |
| 6 | * |
| 7 | * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it under |
| 10 | * the terms of the GNU General Public License as published by the Free Software |
| 11 | * Foundation; either version 2 of the License, or (at your option) any later |
| 12 | * version. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 15 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR |
| 17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 23 | * POSSIBILITY OF SUCH DAMAGE. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License along with |
| 26 | * this program; if not, write to the Free Software Foundation, Inc., |
| 27 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | * |
| 29 | * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE |
| 30 | * Interface and Linux Device Driver" Application Note. |
| 31 | */ |
| 32 | #undef REALLY_SLOW_IO /* most systems can safely undef this */ |
| 33 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 34 | #include <linux/types.h> |
| 35 | #include <linux/module.h> |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/delay.h> |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 38 | #include <linux/platform_device.h> |
| 39 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 40 | #include <linux/init.h> |
| 41 | #include <linux/ide.h> |
| 42 | #include <linux/sysdev.h> |
| 43 | |
| 44 | #include <linux/dma-mapping.h> |
| 45 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 46 | #include "ide-timing.h" |
| 47 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 48 | #include <asm/io.h> |
| 49 | #include <asm/mach-au1x00/au1xxx.h> |
| 50 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
| 51 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 52 | #include <asm/mach-au1x00/au1xxx_ide.h> |
| 53 | |
| 54 | #define DRV_NAME "au1200-ide" |
| 55 | #define DRV_VERSION "1.0" |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 56 | #define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" |
| 57 | |
| 58 | /* enable the burstmode in the dbdma */ |
| 59 | #define IDE_AU1XXX_BURSTMODE 1 |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 60 | |
| 61 | static _auide_hwif auide_hwif; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 62 | static int dbdma_init_done; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 63 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 64 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 65 | |
| 66 | void auide_insw(unsigned long port, void *addr, u32 count) |
| 67 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 68 | _auide_hwif *ahwif = &auide_hwif; |
| 69 | chan_tab_t *ctp; |
| 70 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 71 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 72 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
| 73 | DDMA_FLAGS_NOIE)) { |
| 74 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 75 | return; |
| 76 | } |
| 77 | ctp = *((chan_tab_t **)ahwif->rx_chan); |
| 78 | dp = ctp->cur_ptr; |
| 79 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 80 | ; |
| 81 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | void auide_outsw(unsigned long port, void *addr, u32 count) |
| 85 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 86 | _auide_hwif *ahwif = &auide_hwif; |
| 87 | chan_tab_t *ctp; |
| 88 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 89 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 90 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
| 91 | count << 1, DDMA_FLAGS_NOIE)) { |
| 92 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 93 | return; |
| 94 | } |
| 95 | ctp = *((chan_tab_t **)ahwif->tx_chan); |
| 96 | dp = ctp->cur_ptr; |
| 97 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 98 | ; |
| 99 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 100 | } |
| 101 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 102 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 103 | |
| 104 | static void auide_tune_drive(ide_drive_t *drive, byte pio) |
| 105 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 106 | int mem_sttime; |
| 107 | int mem_stcfg; |
| 108 | u8 speed; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 109 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 110 | /* get the best pio mode for the drive */ |
| 111 | pio = ide_get_best_pio_mode(drive, pio, 4, NULL); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 112 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 113 | printk(KERN_INFO "%s: setting Au1XXX IDE to PIO mode%d\n", |
| 114 | drive->name, pio); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 115 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 116 | mem_sttime = 0; |
| 117 | mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 118 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 119 | /* set pio mode! */ |
| 120 | switch(pio) { |
| 121 | case 0: |
| 122 | mem_sttime = SBC_IDE_TIMING(PIO0); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 123 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 124 | /* set configuration for RCS2# */ |
| 125 | mem_stcfg |= TS_MASK; |
| 126 | mem_stcfg &= ~TCSOE_MASK; |
| 127 | mem_stcfg &= ~TOECS_MASK; |
| 128 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; |
| 129 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 130 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 131 | case 1: |
| 132 | mem_sttime = SBC_IDE_TIMING(PIO1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 133 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 134 | /* set configuration for RCS2# */ |
| 135 | mem_stcfg |= TS_MASK; |
| 136 | mem_stcfg &= ~TCSOE_MASK; |
| 137 | mem_stcfg &= ~TOECS_MASK; |
| 138 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; |
| 139 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 140 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 141 | case 2: |
| 142 | mem_sttime = SBC_IDE_TIMING(PIO2); |
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 | /* set configuration for RCS2# */ |
| 145 | mem_stcfg &= ~TS_MASK; |
| 146 | mem_stcfg &= ~TCSOE_MASK; |
| 147 | mem_stcfg &= ~TOECS_MASK; |
| 148 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; |
| 149 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 150 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 151 | case 3: |
| 152 | mem_sttime = SBC_IDE_TIMING(PIO3); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 153 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 154 | /* set configuration for RCS2# */ |
| 155 | mem_stcfg &= ~TS_MASK; |
| 156 | mem_stcfg &= ~TCSOE_MASK; |
| 157 | mem_stcfg &= ~TOECS_MASK; |
| 158 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 159 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 160 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 161 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 162 | case 4: |
| 163 | mem_sttime = SBC_IDE_TIMING(PIO4); |
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 | /* set configuration for RCS2# */ |
| 166 | mem_stcfg &= ~TS_MASK; |
| 167 | mem_stcfg &= ~TCSOE_MASK; |
| 168 | mem_stcfg &= ~TOECS_MASK; |
| 169 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; |
| 170 | break; |
| 171 | } |
| 172 | |
| 173 | au_writel(mem_sttime,MEM_STTIME2); |
| 174 | au_writel(mem_stcfg,MEM_STCFG2); |
| 175 | |
| 176 | speed = pio + XFER_PIO_0; |
| 177 | ide_config_drive_speed(drive, speed); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | static int auide_tune_chipset (ide_drive_t *drive, u8 speed) |
| 181 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 182 | int mem_sttime; |
| 183 | int mem_stcfg; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 184 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 185 | mem_sttime = 0; |
| 186 | mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 187 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 188 | if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) { |
| 189 | auide_tune_drive(drive, speed - XFER_PIO_0); |
| 190 | return 0; |
| 191 | } |
Bartlomiej Zolnierkiewicz | a523a17 | 2007-02-17 02:40:23 +0100 | [diff] [blame] | 192 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 193 | switch(speed) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 194 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 195 | case XFER_MW_DMA_2: |
| 196 | mem_sttime = SBC_IDE_TIMING(MDMA2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 197 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 198 | /* set configuration for RCS2# */ |
| 199 | mem_stcfg &= ~TS_MASK; |
| 200 | mem_stcfg &= ~TCSOE_MASK; |
| 201 | mem_stcfg &= ~TOECS_MASK; |
| 202 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 203 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 204 | break; |
| 205 | case XFER_MW_DMA_1: |
| 206 | mem_sttime = SBC_IDE_TIMING(MDMA1); |
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 | /* set configuration for RCS2# */ |
| 209 | mem_stcfg &= ~TS_MASK; |
| 210 | mem_stcfg &= ~TCSOE_MASK; |
| 211 | mem_stcfg &= ~TOECS_MASK; |
| 212 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; |
| 213 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 214 | break; |
| 215 | case XFER_MW_DMA_0: |
| 216 | mem_sttime = SBC_IDE_TIMING(MDMA0); |
| 217 | |
| 218 | /* set configuration for RCS2# */ |
| 219 | mem_stcfg |= TS_MASK; |
| 220 | mem_stcfg &= ~TCSOE_MASK; |
| 221 | mem_stcfg &= ~TOECS_MASK; |
| 222 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; |
| 223 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 224 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 225 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 226 | default: |
| 227 | return 1; |
| 228 | } |
Bartlomiej Zolnierkiewicz | a523a17 | 2007-02-17 02:40:23 +0100 | [diff] [blame] | 229 | |
| 230 | if (ide_config_drive_speed(drive, speed)) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 231 | return 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 232 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 233 | au_writel(mem_sttime,MEM_STTIME2); |
| 234 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 235 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 236 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | /* |
| 240 | * Multi-Word DMA + DbDMA functions |
| 241 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 242 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 243 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 244 | |
| 245 | static int auide_build_sglist(ide_drive_t *drive, struct request *rq) |
| 246 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 247 | ide_hwif_t *hwif = drive->hwif; |
| 248 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 249 | struct scatterlist *sg = hwif->sg_table; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 250 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 251 | ide_map_sg(drive, rq); |
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 (rq_data_dir(rq) == READ) |
| 254 | hwif->sg_dma_direction = DMA_FROM_DEVICE; |
| 255 | else |
| 256 | hwif->sg_dma_direction = DMA_TO_DEVICE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 257 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 258 | return dma_map_sg(ahwif->dev, sg, hwif->sg_nents, |
| 259 | hwif->sg_dma_direction); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | static int auide_build_dmatable(ide_drive_t *drive) |
| 263 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 264 | int i, iswrite, count = 0; |
| 265 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 266 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 267 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 268 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 269 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 270 | struct scatterlist *sg; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 271 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 272 | iswrite = (rq_data_dir(rq) == WRITE); |
| 273 | /* Save for interrupt context */ |
| 274 | ahwif->drive = drive; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 275 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 276 | /* Build sglist */ |
| 277 | hwif->sg_nents = i = auide_build_sglist(drive, rq); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 278 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 279 | if (!i) |
| 280 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 281 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 282 | /* fill the descriptors */ |
| 283 | sg = hwif->sg_table; |
| 284 | while (i && sg_dma_len(sg)) { |
| 285 | u32 cur_addr; |
| 286 | u32 cur_len; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 287 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 288 | cur_addr = sg_dma_address(sg); |
| 289 | cur_len = sg_dma_len(sg); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 290 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 291 | while (cur_len) { |
| 292 | u32 flags = DDMA_FLAGS_NOIE; |
| 293 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; |
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 | if (++count >= PRD_ENTRIES) { |
| 296 | printk(KERN_WARNING "%s: DMA table too small\n", |
| 297 | drive->name); |
| 298 | goto use_pio_instead; |
| 299 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 300 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 301 | /* Lets enable intr for the last descriptor only */ |
| 302 | if (1==i) |
| 303 | flags = DDMA_FLAGS_IE; |
| 304 | else |
| 305 | flags = DDMA_FLAGS_NOIE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 306 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 307 | if (iswrite) { |
| 308 | if(!put_source_flags(ahwif->tx_chan, |
| 309 | (void*)(page_address(sg->page) |
| 310 | + sg->offset), |
| 311 | tc, flags)) { |
| 312 | printk(KERN_ERR "%s failed %d\n", |
| 313 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 314 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 315 | } else |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 316 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 317 | if(!put_dest_flags(ahwif->rx_chan, |
| 318 | (void*)(page_address(sg->page) |
| 319 | + sg->offset), |
| 320 | tc, flags)) { |
| 321 | printk(KERN_ERR "%s failed %d\n", |
| 322 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 323 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 324 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 325 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 326 | cur_addr += tc; |
| 327 | cur_len -= tc; |
| 328 | } |
| 329 | sg++; |
| 330 | i--; |
| 331 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 332 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 333 | if (count) |
| 334 | return 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 335 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 336 | use_pio_instead: |
| 337 | dma_unmap_sg(ahwif->dev, |
| 338 | hwif->sg_table, |
| 339 | hwif->sg_nents, |
| 340 | hwif->sg_dma_direction); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 341 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 342 | return 0; /* revert to PIO for this request */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | static int auide_dma_end(ide_drive_t *drive) |
| 346 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 347 | ide_hwif_t *hwif = HWIF(drive); |
| 348 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 349 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 350 | if (hwif->sg_nents) { |
| 351 | dma_unmap_sg(ahwif->dev, hwif->sg_table, hwif->sg_nents, |
| 352 | hwif->sg_dma_direction); |
| 353 | hwif->sg_nents = 0; |
| 354 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 355 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 356 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | static void auide_dma_start(ide_drive_t *drive ) |
| 360 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 361 | } |
| 362 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 363 | |
| 364 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) |
| 365 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 366 | /* issue cmd to drive */ |
| 367 | ide_execute_command(drive, command, &ide_dma_intr, |
| 368 | (2*WAIT_CMD), NULL); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | static int auide_dma_setup(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 372 | { |
| 373 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 374 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 375 | if (!auide_build_dmatable(drive)) { |
| 376 | ide_map_sg(drive, rq); |
| 377 | return 1; |
| 378 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 379 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 380 | drive->waiting_for_dma = 1; |
| 381 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | static int auide_dma_check(ide_drive_t *drive) |
| 385 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 386 | u8 speed; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 387 | |
| 388 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 389 | |
| 390 | if( dbdma_init_done == 0 ){ |
| 391 | auide_hwif.white_list = ide_in_drive_list(drive->id, |
| 392 | dma_white_list); |
| 393 | auide_hwif.black_list = ide_in_drive_list(drive->id, |
| 394 | dma_black_list); |
| 395 | auide_hwif.drive = drive; |
| 396 | auide_ddma_init(&auide_hwif); |
| 397 | dbdma_init_done = 1; |
| 398 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 399 | #endif |
| 400 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 401 | /* Is the drive in our DMA black list? */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 402 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 403 | if ( auide_hwif.black_list ) { |
| 404 | drive->using_dma = 0; |
| 405 | |
| 406 | /* Borrowed the warning message from ide-dma.c */ |
| 407 | |
| 408 | printk(KERN_WARNING "%s: Disabling DMA for %s (blacklisted)\n", |
| 409 | drive->name, drive->id->model); |
| 410 | } |
| 411 | else |
| 412 | drive->using_dma = 1; |
| 413 | |
| 414 | speed = ide_find_best_mode(drive, XFER_PIO | XFER_MWDMA); |
| 415 | |
| 416 | if (drive->autodma && (speed & XFER_MODE) != XFER_PIO) |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 417 | return 0; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 418 | |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 419 | return -1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | static int auide_dma_test_irq(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 423 | { |
| 424 | if (drive->waiting_for_dma == 0) |
| 425 | printk(KERN_WARNING "%s: ide_dma_test_irq \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 426 | called while not waiting\n", drive->name); |
| 427 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 428 | /* If dbdma didn't execute the STOP command yet, the |
| 429 | * active bit is still set |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 430 | */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 431 | drive->waiting_for_dma++; |
| 432 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { |
| 433 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 434 | complete\n", drive->name); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 435 | return 1; |
| 436 | } |
| 437 | udelay(10); |
| 438 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 439 | } |
| 440 | |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame^] | 441 | static void auide_dma_host_on(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 442 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | static int auide_dma_on(ide_drive_t *drive) |
| 446 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 447 | drive->using_dma = 1; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame^] | 448 | |
| 449 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 450 | } |
| 451 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 452 | static void auide_dma_host_off(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 453 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 454 | } |
| 455 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 456 | static void auide_dma_off_quietly(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 457 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 458 | drive->using_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | static int auide_dma_lostirq(ide_drive_t *drive) |
| 462 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 463 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
| 464 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 465 | } |
| 466 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 467 | static void auide_ddma_tx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 468 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 469 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 470 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 471 | } |
| 472 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 473 | static void auide_ddma_rx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 474 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 475 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 476 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 477 | } |
| 478 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 479 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 480 | |
| 481 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
| 482 | { |
| 483 | dev->dev_id = dev_id; |
| 484 | dev->dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 485 | dev->dev_intlevel = 0; |
| 486 | dev->dev_intpolarity = 0; |
| 487 | dev->dev_tsize = tsize; |
| 488 | dev->dev_devwidth = devwidth; |
| 489 | dev->dev_flags = flags; |
| 490 | } |
| 491 | |
| 492 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 493 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 494 | static int auide_dma_timeout(ide_drive_t *drive) |
| 495 | { |
| 496 | // printk("%s\n", __FUNCTION__); |
| 497 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 498 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 499 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 500 | if (HWIF(drive)->ide_dma_test_irq(drive)) |
| 501 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 502 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 503 | return HWIF(drive)->ide_dma_end(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 504 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 505 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 506 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 507 | static int auide_ddma_init(_auide_hwif *auide) { |
| 508 | |
| 509 | dbdev_tab_t source_dev_tab, target_dev_tab; |
| 510 | u32 dev_id, tsize, devwidth, flags; |
| 511 | ide_hwif_t *hwif = auide->hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 512 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 513 | dev_id = AU1XXX_ATA_DDMA_REQ; |
| 514 | |
| 515 | if (auide->white_list || auide->black_list) { |
| 516 | tsize = 8; |
| 517 | devwidth = 32; |
| 518 | } |
| 519 | else { |
| 520 | tsize = 1; |
| 521 | devwidth = 16; |
| 522 | |
| 523 | printk(KERN_ERR "au1xxx-ide: %s is not on ide driver whitelist.\n",auide_hwif.drive->id->model); |
| 524 | printk(KERN_ERR " please read 'Documentation/mips/AU1xxx_IDE.README'"); |
| 525 | } |
| 526 | |
| 527 | #ifdef IDE_AU1XXX_BURSTMODE |
| 528 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
| 529 | #else |
| 530 | flags = DEV_FLAGS_SYNC; |
| 531 | #endif |
| 532 | |
| 533 | /* setup dev_tab for tx channel */ |
| 534 | auide_init_dbdma_dev( &source_dev_tab, |
| 535 | dev_id, |
| 536 | tsize, devwidth, DEV_FLAGS_OUT | flags); |
| 537 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 538 | |
| 539 | auide_init_dbdma_dev( &source_dev_tab, |
| 540 | dev_id, |
| 541 | tsize, devwidth, DEV_FLAGS_IN | flags); |
| 542 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 543 | |
| 544 | /* We also need to add a target device for the DMA */ |
| 545 | auide_init_dbdma_dev( &target_dev_tab, |
| 546 | (u32)DSCR_CMD0_ALWAYS, |
| 547 | tsize, devwidth, DEV_FLAGS_ANYUSE); |
| 548 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); |
| 549 | |
| 550 | /* Get a channel for TX */ |
| 551 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, |
| 552 | auide->tx_dev_id, |
| 553 | auide_ddma_tx_callback, |
| 554 | (void*)auide); |
| 555 | |
| 556 | /* Get a channel for RX */ |
| 557 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 558 | auide->target_dev_id, |
| 559 | auide_ddma_rx_callback, |
| 560 | (void*)auide); |
| 561 | |
| 562 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 563 | NUM_DESCRIPTORS); |
| 564 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 565 | NUM_DESCRIPTORS); |
| 566 | |
| 567 | hwif->dmatable_cpu = dma_alloc_coherent(auide->dev, |
| 568 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
| 569 | &hwif->dmatable_dma, GFP_KERNEL); |
| 570 | |
| 571 | au1xxx_dbdma_start( auide->tx_chan ); |
| 572 | au1xxx_dbdma_start( auide->rx_chan ); |
| 573 | |
| 574 | return 0; |
| 575 | } |
| 576 | #else |
| 577 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 578 | static int auide_ddma_init( _auide_hwif *auide ) |
| 579 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 580 | dbdev_tab_t source_dev_tab; |
| 581 | int flags; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 582 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 583 | #ifdef IDE_AU1XXX_BURSTMODE |
| 584 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 585 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 586 | flags = DEV_FLAGS_SYNC; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 587 | #endif |
| 588 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 589 | /* setup dev_tab for tx channel */ |
| 590 | auide_init_dbdma_dev( &source_dev_tab, |
| 591 | (u32)DSCR_CMD0_ALWAYS, |
| 592 | 8, 32, DEV_FLAGS_OUT | flags); |
| 593 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 594 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 595 | auide_init_dbdma_dev( &source_dev_tab, |
| 596 | (u32)DSCR_CMD0_ALWAYS, |
| 597 | 8, 32, DEV_FLAGS_IN | flags); |
| 598 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 599 | |
| 600 | /* Get a channel for TX */ |
| 601 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, |
| 602 | auide->tx_dev_id, |
| 603 | NULL, |
| 604 | (void*)auide); |
| 605 | |
| 606 | /* Get a channel for RX */ |
| 607 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 608 | DSCR_CMD0_ALWAYS, |
| 609 | NULL, |
| 610 | (void*)auide); |
| 611 | |
| 612 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 613 | NUM_DESCRIPTORS); |
| 614 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 615 | NUM_DESCRIPTORS); |
| 616 | |
| 617 | au1xxx_dbdma_start( auide->tx_chan ); |
| 618 | au1xxx_dbdma_start( auide->rx_chan ); |
| 619 | |
| 620 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 621 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 622 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 623 | |
| 624 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) |
| 625 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 626 | int i; |
| 627 | unsigned long *ata_regs = hw->io_ports; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 628 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 629 | /* FIXME? */ |
| 630 | for (i = 0; i < IDE_CONTROL_OFFSET; i++) { |
| 631 | *ata_regs++ = ahwif->regbase + (i << AU1XXX_ATA_REG_OFFSET); |
| 632 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 633 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 634 | /* set the Alternative Status register */ |
| 635 | *ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 636 | } |
| 637 | |
| 638 | static int au_ide_probe(struct device *dev) |
| 639 | { |
| 640 | struct platform_device *pdev = to_platform_device(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 641 | _auide_hwif *ahwif = &auide_hwif; |
| 642 | ide_hwif_t *hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 643 | struct resource *res; |
| 644 | int ret = 0; |
| 645 | |
| 646 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 647 | char *mode = "MWDMA2"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 648 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 649 | char *mode = "PIO+DDMA(offload)"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 650 | #endif |
| 651 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 652 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
| 653 | auide_hwif.dev = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 654 | |
| 655 | ahwif->dev = dev; |
| 656 | ahwif->irq = platform_get_irq(pdev, 0); |
| 657 | |
| 658 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 659 | |
| 660 | if (res == NULL) { |
| 661 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); |
| 662 | ret = -ENODEV; |
| 663 | goto out; |
| 664 | } |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 665 | if (ahwif->irq < 0) { |
| 666 | pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); |
| 667 | ret = -ENODEV; |
| 668 | goto out; |
| 669 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 670 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 671 | if (!request_mem_region (res->start, res->end-res->start, pdev->name)) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 672 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 673 | ret = -EBUSY; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 674 | goto out; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 675 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 676 | |
| 677 | ahwif->regbase = (u32)ioremap(res->start, res->end-res->start); |
| 678 | if (ahwif->regbase == 0) { |
| 679 | ret = -ENOMEM; |
| 680 | goto out; |
| 681 | } |
| 682 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 683 | /* FIXME: This might possibly break PCMCIA IDE devices */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 684 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 685 | hwif = &ide_hwifs[pdev->id]; |
| 686 | hw_regs_t *hw = &hwif->hw; |
| 687 | hwif->irq = hw->irq = ahwif->irq; |
| 688 | hwif->chipset = ide_au1xxx; |
| 689 | |
| 690 | auide_setup_ports(hw, ahwif); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 691 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); |
| 692 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 693 | hwif->ultra_mask = 0x0; /* Disable Ultra DMA */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 694 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 695 | hwif->mwdma_mask = 0x07; /* Multimode-2 DMA */ |
| 696 | hwif->swdma_mask = 0x00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 697 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 698 | hwif->mwdma_mask = 0x0; |
| 699 | hwif->swdma_mask = 0x0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 700 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 701 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 702 | hwif->noprobe = 0; |
| 703 | hwif->drives[0].unmask = 1; |
| 704 | hwif->drives[1].unmask = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 705 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 706 | /* hold should be on in all cases */ |
| 707 | hwif->hold = 1; |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 708 | |
| 709 | hwif->mmio = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 710 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 711 | /* If the user has selected DDMA assisted copies, |
| 712 | then set up a few local I/O function entry points |
| 713 | */ |
| 714 | |
| 715 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 716 | hwif->INSW = auide_insw; |
| 717 | hwif->OUTSW = auide_outsw; |
| 718 | #endif |
| 719 | |
| 720 | hwif->tuneproc = &auide_tune_drive; |
| 721 | hwif->speedproc = &auide_tune_chipset; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 722 | |
| 723 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 724 | hwif->dma_off_quietly = &auide_dma_off_quietly; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 725 | hwif->ide_dma_timeout = &auide_dma_timeout; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 726 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 727 | hwif->ide_dma_check = &auide_dma_check; |
| 728 | hwif->dma_exec_cmd = &auide_dma_exec_cmd; |
| 729 | hwif->dma_start = &auide_dma_start; |
| 730 | hwif->ide_dma_end = &auide_dma_end; |
| 731 | hwif->dma_setup = &auide_dma_setup; |
| 732 | hwif->ide_dma_test_irq = &auide_dma_test_irq; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 733 | hwif->dma_host_off = &auide_dma_host_off; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame^] | 734 | hwif->dma_host_on = &auide_dma_host_on; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 735 | hwif->ide_dma_lostirq = &auide_dma_lostirq; |
| 736 | hwif->ide_dma_on = &auide_dma_on; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 737 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 738 | hwif->autodma = 1; |
| 739 | hwif->drives[0].autodma = hwif->autodma; |
| 740 | hwif->drives[1].autodma = hwif->autodma; |
| 741 | hwif->atapi_dma = 1; |
| 742 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 743 | #else /* !CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 744 | hwif->autodma = 0; |
| 745 | hwif->channel = 0; |
| 746 | hwif->hold = 1; |
| 747 | hwif->select_data = 0; /* no chipset-specific code */ |
| 748 | hwif->config_data = 0; /* no chipset-specific code */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 749 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 750 | hwif->drives[0].autodma = 0; |
| 751 | hwif->drives[0].autotune = 1; /* 1=autotune, 2=noautotune, 0=default */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 752 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 753 | hwif->drives[0].no_io_32bit = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 754 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 755 | auide_hwif.hwif = hwif; |
| 756 | hwif->hwif_data = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 757 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 758 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 759 | auide_ddma_init(&auide_hwif); |
| 760 | dbdma_init_done = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 761 | #endif |
| 762 | |
| 763 | probe_hwif_init(hwif); |
| 764 | dev_set_drvdata(dev, hwif); |
| 765 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 766 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 767 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 768 | out: |
| 769 | return ret; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | static int au_ide_remove(struct device *dev) |
| 773 | { |
| 774 | struct platform_device *pdev = to_platform_device(dev); |
| 775 | struct resource *res; |
| 776 | ide_hwif_t *hwif = dev_get_drvdata(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 777 | _auide_hwif *ahwif = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 778 | |
| 779 | ide_unregister(hwif - ide_hwifs); |
| 780 | |
| 781 | iounmap((void *)ahwif->regbase); |
| 782 | |
| 783 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 784 | release_mem_region(res->start, res->end - res->start); |
| 785 | |
| 786 | return 0; |
| 787 | } |
| 788 | |
| 789 | static struct device_driver au1200_ide_driver = { |
| 790 | .name = "au1200-ide", |
| 791 | .bus = &platform_bus_type, |
| 792 | .probe = au_ide_probe, |
| 793 | .remove = au_ide_remove, |
| 794 | }; |
| 795 | |
| 796 | static int __init au_ide_init(void) |
| 797 | { |
| 798 | return driver_register(&au1200_ide_driver); |
| 799 | } |
| 800 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 801 | static void __exit au_ide_exit(void) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 802 | { |
| 803 | driver_unregister(&au1200_ide_driver); |
| 804 | } |
| 805 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 806 | MODULE_LICENSE("GPL"); |
| 807 | MODULE_DESCRIPTION("AU1200 IDE driver"); |
| 808 | |
| 809 | module_init(au_ide_init); |
| 810 | module_exit(au_ide_exit); |