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 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 32 | #include <linux/types.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/kernel.h> |
| 35 | #include <linux/delay.h> |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 36 | #include <linux/platform_device.h> |
| 37 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 38 | #include <linux/init.h> |
| 39 | #include <linux/ide.h> |
| 40 | #include <linux/sysdev.h> |
| 41 | |
| 42 | #include <linux/dma-mapping.h> |
| 43 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 44 | #include "ide-timing.h" |
| 45 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 46 | #include <asm/io.h> |
| 47 | #include <asm/mach-au1x00/au1xxx.h> |
| 48 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
| 49 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 50 | #include <asm/mach-au1x00/au1xxx_ide.h> |
| 51 | |
| 52 | #define DRV_NAME "au1200-ide" |
| 53 | #define DRV_VERSION "1.0" |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 54 | #define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" |
| 55 | |
| 56 | /* enable the burstmode in the dbdma */ |
| 57 | #define IDE_AU1XXX_BURSTMODE 1 |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 58 | |
| 59 | static _auide_hwif auide_hwif; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 60 | static int dbdma_init_done; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 61 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 62 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 63 | |
| 64 | void auide_insw(unsigned long port, void *addr, u32 count) |
| 65 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 66 | _auide_hwif *ahwif = &auide_hwif; |
| 67 | chan_tab_t *ctp; |
| 68 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 69 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 70 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
| 71 | DDMA_FLAGS_NOIE)) { |
| 72 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 73 | return; |
| 74 | } |
| 75 | ctp = *((chan_tab_t **)ahwif->rx_chan); |
| 76 | dp = ctp->cur_ptr; |
| 77 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 78 | ; |
| 79 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | void auide_outsw(unsigned long port, void *addr, u32 count) |
| 83 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 84 | _auide_hwif *ahwif = &auide_hwif; |
| 85 | chan_tab_t *ctp; |
| 86 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 87 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 88 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
| 89 | count << 1, DDMA_FLAGS_NOIE)) { |
| 90 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 91 | return; |
| 92 | } |
| 93 | ctp = *((chan_tab_t **)ahwif->tx_chan); |
| 94 | dp = ctp->cur_ptr; |
| 95 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 96 | ; |
| 97 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 98 | } |
| 99 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 100 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 101 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 102 | 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] | 103 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 104 | int mem_sttime; |
| 105 | int mem_stcfg; |
Bartlomiej Zolnierkiewicz | 0f45894 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 106 | |
| 107 | if (ide_config_drive_speed(drive, pio + XFER_PIO_0)) |
| 108 | return; |
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 | mem_sttime = 0; |
| 111 | mem_stcfg = au_readl(MEM_STCFG2); |
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 | /* set pio mode! */ |
| 114 | switch(pio) { |
| 115 | case 0: |
| 116 | mem_sttime = SBC_IDE_TIMING(PIO0); |
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_PIO0_TCSOE | SBC_IDE_PIO0_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 1: |
| 126 | mem_sttime = SBC_IDE_TIMING(PIO1); |
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_PIO1_TCSOE | SBC_IDE_PIO1_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 2: |
| 136 | mem_sttime = SBC_IDE_TIMING(PIO2); |
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_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; |
| 143 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 144 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 145 | case 3: |
| 146 | mem_sttime = SBC_IDE_TIMING(PIO3); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 147 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 148 | /* set configuration for RCS2# */ |
| 149 | mem_stcfg &= ~TS_MASK; |
| 150 | mem_stcfg &= ~TCSOE_MASK; |
| 151 | mem_stcfg &= ~TOECS_MASK; |
| 152 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; |
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 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 155 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 156 | case 4: |
| 157 | mem_sttime = SBC_IDE_TIMING(PIO4); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 158 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 159 | /* set configuration for RCS2# */ |
| 160 | mem_stcfg &= ~TS_MASK; |
| 161 | mem_stcfg &= ~TCSOE_MASK; |
| 162 | mem_stcfg &= ~TOECS_MASK; |
| 163 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; |
| 164 | break; |
| 165 | } |
| 166 | |
| 167 | au_writel(mem_sttime,MEM_STTIME2); |
| 168 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 169 | } |
| 170 | |
Bartlomiej Zolnierkiewicz | f212ff2 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 171 | static int auide_tune_chipset(ide_drive_t *drive, const u8 speed) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 172 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 173 | int mem_sttime; |
| 174 | int mem_stcfg; |
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 | mem_sttime = 0; |
| 177 | mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 178 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 179 | switch(speed) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 180 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 181 | case XFER_MW_DMA_2: |
| 182 | mem_sttime = SBC_IDE_TIMING(MDMA2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 183 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 184 | /* set configuration for RCS2# */ |
| 185 | mem_stcfg &= ~TS_MASK; |
| 186 | mem_stcfg &= ~TCSOE_MASK; |
| 187 | mem_stcfg &= ~TOECS_MASK; |
| 188 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 189 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 190 | break; |
| 191 | case XFER_MW_DMA_1: |
| 192 | mem_sttime = SBC_IDE_TIMING(MDMA1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 193 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 194 | /* set configuration for RCS2# */ |
| 195 | mem_stcfg &= ~TS_MASK; |
| 196 | mem_stcfg &= ~TCSOE_MASK; |
| 197 | mem_stcfg &= ~TOECS_MASK; |
| 198 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; |
| 199 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 200 | break; |
| 201 | case XFER_MW_DMA_0: |
| 202 | mem_sttime = SBC_IDE_TIMING(MDMA0); |
| 203 | |
| 204 | /* set configuration for RCS2# */ |
| 205 | mem_stcfg |= TS_MASK; |
| 206 | mem_stcfg &= ~TCSOE_MASK; |
| 207 | mem_stcfg &= ~TOECS_MASK; |
| 208 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; |
| 209 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 210 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 211 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 212 | default: |
| 213 | return 1; |
| 214 | } |
Bartlomiej Zolnierkiewicz | a523a17 | 2007-02-17 02:40:23 +0100 | [diff] [blame] | 215 | |
| 216 | if (ide_config_drive_speed(drive, speed)) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 217 | return 1; |
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 | au_writel(mem_sttime,MEM_STTIME2); |
| 220 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 221 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 222 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | /* |
| 226 | * Multi-Word DMA + DbDMA functions |
| 227 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 228 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 229 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 230 | |
| 231 | static int auide_build_sglist(ide_drive_t *drive, struct request *rq) |
| 232 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 233 | ide_hwif_t *hwif = drive->hwif; |
| 234 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 235 | struct scatterlist *sg = hwif->sg_table; |
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 | ide_map_sg(drive, rq); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 238 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 239 | if (rq_data_dir(rq) == READ) |
| 240 | hwif->sg_dma_direction = DMA_FROM_DEVICE; |
| 241 | else |
| 242 | hwif->sg_dma_direction = DMA_TO_DEVICE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 243 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 244 | return dma_map_sg(ahwif->dev, sg, hwif->sg_nents, |
| 245 | hwif->sg_dma_direction); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | static int auide_build_dmatable(ide_drive_t *drive) |
| 249 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 250 | int i, iswrite, count = 0; |
| 251 | ide_hwif_t *hwif = HWIF(drive); |
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 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 254 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 255 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 256 | struct scatterlist *sg; |
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 | iswrite = (rq_data_dir(rq) == WRITE); |
| 259 | /* Save for interrupt context */ |
| 260 | ahwif->drive = drive; |
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 | /* Build sglist */ |
| 263 | hwif->sg_nents = i = auide_build_sglist(drive, rq); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 264 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 265 | if (!i) |
| 266 | return 0; |
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 | /* fill the descriptors */ |
| 269 | sg = hwif->sg_table; |
| 270 | while (i && sg_dma_len(sg)) { |
| 271 | u32 cur_addr; |
| 272 | u32 cur_len; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 273 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 274 | cur_addr = sg_dma_address(sg); |
| 275 | cur_len = sg_dma_len(sg); |
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 | while (cur_len) { |
| 278 | u32 flags = DDMA_FLAGS_NOIE; |
| 279 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 280 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 281 | if (++count >= PRD_ENTRIES) { |
| 282 | printk(KERN_WARNING "%s: DMA table too small\n", |
| 283 | drive->name); |
| 284 | goto use_pio_instead; |
| 285 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 286 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 287 | /* Lets enable intr for the last descriptor only */ |
| 288 | if (1==i) |
| 289 | flags = DDMA_FLAGS_IE; |
| 290 | else |
| 291 | flags = DDMA_FLAGS_NOIE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 292 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 293 | if (iswrite) { |
| 294 | if(!put_source_flags(ahwif->tx_chan, |
| 295 | (void*)(page_address(sg->page) |
| 296 | + sg->offset), |
| 297 | tc, flags)) { |
| 298 | printk(KERN_ERR "%s failed %d\n", |
| 299 | __FUNCTION__, __LINE__); |
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 | } else |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 302 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 303 | if(!put_dest_flags(ahwif->rx_chan, |
| 304 | (void*)(page_address(sg->page) |
| 305 | + sg->offset), |
| 306 | tc, flags)) { |
| 307 | printk(KERN_ERR "%s failed %d\n", |
| 308 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 309 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 310 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 311 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 312 | cur_addr += tc; |
| 313 | cur_len -= tc; |
| 314 | } |
| 315 | sg++; |
| 316 | i--; |
| 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 | if (count) |
| 320 | return 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 321 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 322 | use_pio_instead: |
| 323 | dma_unmap_sg(ahwif->dev, |
| 324 | hwif->sg_table, |
| 325 | hwif->sg_nents, |
| 326 | hwif->sg_dma_direction); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 327 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 328 | return 0; /* revert to PIO for this request */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 329 | } |
| 330 | |
| 331 | static int auide_dma_end(ide_drive_t *drive) |
| 332 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 333 | ide_hwif_t *hwif = HWIF(drive); |
| 334 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
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 | if (hwif->sg_nents) { |
| 337 | dma_unmap_sg(ahwif->dev, hwif->sg_table, hwif->sg_nents, |
| 338 | hwif->sg_dma_direction); |
| 339 | hwif->sg_nents = 0; |
| 340 | } |
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; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | static void auide_dma_start(ide_drive_t *drive ) |
| 346 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 347 | } |
| 348 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 349 | |
| 350 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) |
| 351 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 352 | /* issue cmd to drive */ |
| 353 | ide_execute_command(drive, command, &ide_dma_intr, |
| 354 | (2*WAIT_CMD), NULL); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | static int auide_dma_setup(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 358 | { |
| 359 | struct request *rq = HWGROUP(drive)->rq; |
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 | if (!auide_build_dmatable(drive)) { |
| 362 | ide_map_sg(drive, rq); |
| 363 | return 1; |
| 364 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 365 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 366 | drive->waiting_for_dma = 1; |
| 367 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | static int auide_dma_check(ide_drive_t *drive) |
| 371 | { |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 372 | u8 speed = ide_max_dma_mode(drive); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 373 | |
| 374 | if( dbdma_init_done == 0 ){ |
| 375 | auide_hwif.white_list = ide_in_drive_list(drive->id, |
| 376 | dma_white_list); |
| 377 | auide_hwif.black_list = ide_in_drive_list(drive->id, |
| 378 | dma_black_list); |
| 379 | auide_hwif.drive = drive; |
| 380 | auide_ddma_init(&auide_hwif); |
| 381 | dbdma_init_done = 1; |
| 382 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 383 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 384 | /* Is the drive in our DMA black list? */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 385 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 386 | if ( auide_hwif.black_list ) { |
| 387 | drive->using_dma = 0; |
| 388 | |
| 389 | /* Borrowed the warning message from ide-dma.c */ |
| 390 | |
| 391 | printk(KERN_WARNING "%s: Disabling DMA for %s (blacklisted)\n", |
| 392 | drive->name, drive->id->model); |
| 393 | } |
| 394 | else |
| 395 | drive->using_dma = 1; |
| 396 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 397 | if (drive->autodma && (speed & XFER_MODE) != XFER_PIO) |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 398 | return 0; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 399 | |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 400 | return -1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | static int auide_dma_test_irq(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 404 | { |
| 405 | if (drive->waiting_for_dma == 0) |
| 406 | printk(KERN_WARNING "%s: ide_dma_test_irq \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 407 | called while not waiting\n", drive->name); |
| 408 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 409 | /* If dbdma didn't execute the STOP command yet, the |
| 410 | * active bit is still set |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 411 | */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 412 | drive->waiting_for_dma++; |
| 413 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { |
| 414 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 415 | complete\n", drive->name); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 416 | return 1; |
| 417 | } |
| 418 | udelay(10); |
| 419 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 420 | } |
| 421 | |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 422 | static void auide_dma_host_on(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 423 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | static int auide_dma_on(ide_drive_t *drive) |
| 427 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 428 | drive->using_dma = 1; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 429 | |
| 430 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 431 | } |
| 432 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 433 | static void auide_dma_host_off(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 434 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 435 | } |
| 436 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 437 | static void auide_dma_off_quietly(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 438 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 439 | drive->using_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 440 | } |
| 441 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 442 | static void auide_dma_lost_irq(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 443 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 444 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 445 | } |
| 446 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 447 | static void auide_ddma_tx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 448 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 449 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 450 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 451 | } |
| 452 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 453 | static void auide_ddma_rx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 454 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 455 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 456 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 457 | } |
| 458 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 459 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 460 | |
| 461 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
| 462 | { |
| 463 | dev->dev_id = dev_id; |
| 464 | dev->dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 465 | dev->dev_intlevel = 0; |
| 466 | dev->dev_intpolarity = 0; |
| 467 | dev->dev_tsize = tsize; |
| 468 | dev->dev_devwidth = devwidth; |
| 469 | dev->dev_flags = flags; |
| 470 | } |
| 471 | |
| 472 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 473 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 474 | static void auide_dma_timeout(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 475 | { |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 476 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 477 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 478 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 479 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 480 | if (hwif->ide_dma_test_irq(drive)) |
| 481 | return; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 482 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 483 | hwif->ide_dma_end(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 484 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 485 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 486 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 487 | static int auide_ddma_init(_auide_hwif *auide) { |
| 488 | |
| 489 | dbdev_tab_t source_dev_tab, target_dev_tab; |
| 490 | u32 dev_id, tsize, devwidth, flags; |
| 491 | ide_hwif_t *hwif = auide->hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 492 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 493 | dev_id = AU1XXX_ATA_DDMA_REQ; |
| 494 | |
| 495 | if (auide->white_list || auide->black_list) { |
| 496 | tsize = 8; |
| 497 | devwidth = 32; |
| 498 | } |
| 499 | else { |
| 500 | tsize = 1; |
| 501 | devwidth = 16; |
| 502 | |
| 503 | printk(KERN_ERR "au1xxx-ide: %s is not on ide driver whitelist.\n",auide_hwif.drive->id->model); |
| 504 | printk(KERN_ERR " please read 'Documentation/mips/AU1xxx_IDE.README'"); |
| 505 | } |
| 506 | |
| 507 | #ifdef IDE_AU1XXX_BURSTMODE |
| 508 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
| 509 | #else |
| 510 | flags = DEV_FLAGS_SYNC; |
| 511 | #endif |
| 512 | |
| 513 | /* setup dev_tab for tx channel */ |
| 514 | auide_init_dbdma_dev( &source_dev_tab, |
| 515 | dev_id, |
| 516 | tsize, devwidth, DEV_FLAGS_OUT | flags); |
| 517 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 518 | |
| 519 | auide_init_dbdma_dev( &source_dev_tab, |
| 520 | dev_id, |
| 521 | tsize, devwidth, DEV_FLAGS_IN | flags); |
| 522 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 523 | |
| 524 | /* We also need to add a target device for the DMA */ |
| 525 | auide_init_dbdma_dev( &target_dev_tab, |
| 526 | (u32)DSCR_CMD0_ALWAYS, |
| 527 | tsize, devwidth, DEV_FLAGS_ANYUSE); |
| 528 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); |
| 529 | |
| 530 | /* Get a channel for TX */ |
| 531 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, |
| 532 | auide->tx_dev_id, |
| 533 | auide_ddma_tx_callback, |
| 534 | (void*)auide); |
| 535 | |
| 536 | /* Get a channel for RX */ |
| 537 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 538 | auide->target_dev_id, |
| 539 | auide_ddma_rx_callback, |
| 540 | (void*)auide); |
| 541 | |
| 542 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 543 | NUM_DESCRIPTORS); |
| 544 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 545 | NUM_DESCRIPTORS); |
| 546 | |
| 547 | hwif->dmatable_cpu = dma_alloc_coherent(auide->dev, |
| 548 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
| 549 | &hwif->dmatable_dma, GFP_KERNEL); |
| 550 | |
| 551 | au1xxx_dbdma_start( auide->tx_chan ); |
| 552 | au1xxx_dbdma_start( auide->rx_chan ); |
| 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | #else |
| 557 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 558 | static int auide_ddma_init( _auide_hwif *auide ) |
| 559 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 560 | dbdev_tab_t source_dev_tab; |
| 561 | int flags; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 562 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 563 | #ifdef IDE_AU1XXX_BURSTMODE |
| 564 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 565 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 566 | flags = DEV_FLAGS_SYNC; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 567 | #endif |
| 568 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 569 | /* setup dev_tab for tx channel */ |
| 570 | auide_init_dbdma_dev( &source_dev_tab, |
| 571 | (u32)DSCR_CMD0_ALWAYS, |
| 572 | 8, 32, DEV_FLAGS_OUT | flags); |
| 573 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 574 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 575 | auide_init_dbdma_dev( &source_dev_tab, |
| 576 | (u32)DSCR_CMD0_ALWAYS, |
| 577 | 8, 32, DEV_FLAGS_IN | flags); |
| 578 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 579 | |
| 580 | /* Get a channel for TX */ |
| 581 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, |
| 582 | auide->tx_dev_id, |
| 583 | NULL, |
| 584 | (void*)auide); |
| 585 | |
| 586 | /* Get a channel for RX */ |
| 587 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 588 | DSCR_CMD0_ALWAYS, |
| 589 | NULL, |
| 590 | (void*)auide); |
| 591 | |
| 592 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 593 | NUM_DESCRIPTORS); |
| 594 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 595 | NUM_DESCRIPTORS); |
| 596 | |
| 597 | au1xxx_dbdma_start( auide->tx_chan ); |
| 598 | au1xxx_dbdma_start( auide->rx_chan ); |
| 599 | |
| 600 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 601 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 602 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 603 | |
| 604 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) |
| 605 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 606 | int i; |
| 607 | unsigned long *ata_regs = hw->io_ports; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 608 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 609 | /* FIXME? */ |
| 610 | for (i = 0; i < IDE_CONTROL_OFFSET; i++) { |
| 611 | *ata_regs++ = ahwif->regbase + (i << AU1XXX_ATA_REG_OFFSET); |
| 612 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 613 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 614 | /* set the Alternative Status register */ |
| 615 | *ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | static int au_ide_probe(struct device *dev) |
| 619 | { |
| 620 | struct platform_device *pdev = to_platform_device(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 621 | _auide_hwif *ahwif = &auide_hwif; |
| 622 | ide_hwif_t *hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 623 | struct resource *res; |
Ralf Baechle | 1918fd6 | 2007-03-17 21:57:24 +0100 | [diff] [blame] | 624 | hw_regs_t *hw; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 625 | int ret = 0; |
| 626 | |
| 627 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 628 | char *mode = "MWDMA2"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 629 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 630 | char *mode = "PIO+DDMA(offload)"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 631 | #endif |
| 632 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 633 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
| 634 | auide_hwif.dev = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 635 | |
| 636 | ahwif->dev = dev; |
| 637 | ahwif->irq = platform_get_irq(pdev, 0); |
| 638 | |
| 639 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 640 | |
| 641 | if (res == NULL) { |
| 642 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); |
| 643 | ret = -ENODEV; |
| 644 | goto out; |
| 645 | } |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 646 | if (ahwif->irq < 0) { |
| 647 | pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); |
| 648 | ret = -ENODEV; |
| 649 | goto out; |
| 650 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 651 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 652 | if (!request_mem_region (res->start, res->end-res->start, pdev->name)) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 653 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 654 | ret = -EBUSY; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 655 | goto out; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 656 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 657 | |
| 658 | ahwif->regbase = (u32)ioremap(res->start, res->end-res->start); |
| 659 | if (ahwif->regbase == 0) { |
| 660 | ret = -ENOMEM; |
| 661 | goto out; |
| 662 | } |
| 663 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 664 | /* FIXME: This might possibly break PCMCIA IDE devices */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 665 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 666 | hwif = &ide_hwifs[pdev->id]; |
Ralf Baechle | 1918fd6 | 2007-03-17 21:57:24 +0100 | [diff] [blame] | 667 | hw = &hwif->hw; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 668 | hwif->irq = hw->irq = ahwif->irq; |
| 669 | hwif->chipset = ide_au1xxx; |
| 670 | |
| 671 | auide_setup_ports(hw, ahwif); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 672 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); |
| 673 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 674 | hwif->ultra_mask = 0x0; /* Disable Ultra DMA */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 675 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 676 | hwif->mwdma_mask = 0x07; /* Multimode-2 DMA */ |
| 677 | hwif->swdma_mask = 0x00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 678 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 679 | hwif->mwdma_mask = 0x0; |
| 680 | hwif->swdma_mask = 0x0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 681 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 682 | |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 683 | hwif->pio_mask = ATA_PIO4; |
| 684 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 685 | hwif->noprobe = 0; |
| 686 | hwif->drives[0].unmask = 1; |
| 687 | hwif->drives[1].unmask = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 688 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 689 | /* hold should be on in all cases */ |
| 690 | hwif->hold = 1; |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 691 | |
| 692 | hwif->mmio = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 693 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 694 | /* If the user has selected DDMA assisted copies, |
| 695 | then set up a few local I/O function entry points |
| 696 | */ |
| 697 | |
| 698 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 699 | hwif->INSW = auide_insw; |
| 700 | hwif->OUTSW = auide_outsw; |
| 701 | #endif |
| 702 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 703 | hwif->set_pio_mode = &au1xxx_set_pio_mode; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 704 | hwif->speedproc = &auide_tune_chipset; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 705 | |
| 706 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 707 | hwif->dma_off_quietly = &auide_dma_off_quietly; |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 708 | hwif->dma_timeout = &auide_dma_timeout; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 709 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 710 | hwif->ide_dma_check = &auide_dma_check; |
| 711 | hwif->dma_exec_cmd = &auide_dma_exec_cmd; |
| 712 | hwif->dma_start = &auide_dma_start; |
| 713 | hwif->ide_dma_end = &auide_dma_end; |
| 714 | hwif->dma_setup = &auide_dma_setup; |
| 715 | hwif->ide_dma_test_irq = &auide_dma_test_irq; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 716 | hwif->dma_host_off = &auide_dma_host_off; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 717 | hwif->dma_host_on = &auide_dma_host_on; |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 718 | hwif->dma_lost_irq = &auide_dma_lost_irq; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 719 | hwif->ide_dma_on = &auide_dma_on; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 720 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 721 | hwif->autodma = 1; |
| 722 | hwif->drives[0].autodma = hwif->autodma; |
| 723 | hwif->drives[1].autodma = hwif->autodma; |
| 724 | hwif->atapi_dma = 1; |
| 725 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 726 | #else /* !CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 727 | hwif->autodma = 0; |
| 728 | hwif->channel = 0; |
| 729 | hwif->hold = 1; |
| 730 | hwif->select_data = 0; /* no chipset-specific code */ |
| 731 | hwif->config_data = 0; /* no chipset-specific code */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 732 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 733 | hwif->drives[0].autodma = 0; |
| 734 | hwif->drives[0].autotune = 1; /* 1=autotune, 2=noautotune, 0=default */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 735 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 736 | hwif->drives[0].no_io_32bit = 1; |
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 | auide_hwif.hwif = hwif; |
| 739 | hwif->hwif_data = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 740 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 741 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 742 | auide_ddma_init(&auide_hwif); |
| 743 | dbdma_init_done = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 744 | #endif |
| 745 | |
| 746 | probe_hwif_init(hwif); |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 747 | |
| 748 | ide_proc_register_port(hwif); |
| 749 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 750 | dev_set_drvdata(dev, hwif); |
| 751 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 752 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 753 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 754 | out: |
| 755 | return ret; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 756 | } |
| 757 | |
| 758 | static int au_ide_remove(struct device *dev) |
| 759 | { |
| 760 | struct platform_device *pdev = to_platform_device(dev); |
| 761 | struct resource *res; |
| 762 | ide_hwif_t *hwif = dev_get_drvdata(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 763 | _auide_hwif *ahwif = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 764 | |
| 765 | ide_unregister(hwif - ide_hwifs); |
| 766 | |
| 767 | iounmap((void *)ahwif->regbase); |
| 768 | |
| 769 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 770 | release_mem_region(res->start, res->end - res->start); |
| 771 | |
| 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | static struct device_driver au1200_ide_driver = { |
| 776 | .name = "au1200-ide", |
| 777 | .bus = &platform_bus_type, |
| 778 | .probe = au_ide_probe, |
| 779 | .remove = au_ide_remove, |
| 780 | }; |
| 781 | |
| 782 | static int __init au_ide_init(void) |
| 783 | { |
| 784 | return driver_register(&au1200_ide_driver); |
| 785 | } |
| 786 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 787 | static void __exit au_ide_exit(void) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 788 | { |
| 789 | driver_unregister(&au1200_ide_driver); |
| 790 | } |
| 791 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 792 | MODULE_LICENSE("GPL"); |
| 793 | MODULE_DESCRIPTION("AU1200 IDE driver"); |
| 794 | |
| 795 | module_init(au_ide_init); |
| 796 | module_exit(au_ide_exit); |