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> |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 35 | #include <linux/init.h> |
| 36 | #include <linux/ide.h> |
Sergei Shtylyov | fabd3a2 | 2008-04-17 01:14:33 +0200 | [diff] [blame] | 37 | #include <linux/scatterlist.h> |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 38 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 39 | #include <asm/mach-au1x00/au1xxx.h> |
| 40 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 41 | #include <asm/mach-au1x00/au1xxx_ide.h> |
| 42 | |
| 43 | #define DRV_NAME "au1200-ide" |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 44 | #define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" |
| 45 | |
| 46 | /* enable the burstmode in the dbdma */ |
| 47 | #define IDE_AU1XXX_BURSTMODE 1 |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 48 | |
| 49 | static _auide_hwif auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 50 | |
Sergei Shtylyov | 09a7744 | 2008-04-17 01:14:33 +0200 | [diff] [blame] | 51 | static int auide_ddma_init(_auide_hwif *auide); |
| 52 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 53 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 54 | |
| 55 | void auide_insw(unsigned long port, void *addr, u32 count) |
| 56 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 57 | _auide_hwif *ahwif = &auide_hwif; |
| 58 | chan_tab_t *ctp; |
| 59 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 60 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 61 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
| 62 | DDMA_FLAGS_NOIE)) { |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 63 | printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 64 | return; |
| 65 | } |
| 66 | ctp = *((chan_tab_t **)ahwif->rx_chan); |
| 67 | dp = ctp->cur_ptr; |
| 68 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 69 | ; |
| 70 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | void auide_outsw(unsigned long port, void *addr, u32 count) |
| 74 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 75 | _auide_hwif *ahwif = &auide_hwif; |
| 76 | chan_tab_t *ctp; |
| 77 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 78 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 79 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
| 80 | count << 1, DDMA_FLAGS_NOIE)) { |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 81 | printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 82 | return; |
| 83 | } |
| 84 | ctp = *((chan_tab_t **)ahwif->tx_chan); |
| 85 | dp = ctp->cur_ptr; |
| 86 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 87 | ; |
| 88 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 89 | } |
| 90 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 91 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 92 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 93 | 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] | 94 | { |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 95 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 96 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 97 | /* set pio mode! */ |
| 98 | switch(pio) { |
| 99 | case 0: |
| 100 | mem_sttime = SBC_IDE_TIMING(PIO0); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 101 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 102 | /* set configuration for RCS2# */ |
| 103 | mem_stcfg |= TS_MASK; |
| 104 | mem_stcfg &= ~TCSOE_MASK; |
| 105 | mem_stcfg &= ~TOECS_MASK; |
| 106 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; |
| 107 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 108 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 109 | case 1: |
| 110 | mem_sttime = SBC_IDE_TIMING(PIO1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 111 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 112 | /* set configuration for RCS2# */ |
| 113 | mem_stcfg |= TS_MASK; |
| 114 | mem_stcfg &= ~TCSOE_MASK; |
| 115 | mem_stcfg &= ~TOECS_MASK; |
| 116 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; |
| 117 | break; |
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 | case 2: |
| 120 | mem_sttime = SBC_IDE_TIMING(PIO2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 121 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 122 | /* set configuration for RCS2# */ |
| 123 | mem_stcfg &= ~TS_MASK; |
| 124 | mem_stcfg &= ~TCSOE_MASK; |
| 125 | mem_stcfg &= ~TOECS_MASK; |
| 126 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; |
| 127 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 128 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 129 | case 3: |
| 130 | mem_sttime = SBC_IDE_TIMING(PIO3); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 131 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 132 | /* set configuration for RCS2# */ |
| 133 | mem_stcfg &= ~TS_MASK; |
| 134 | mem_stcfg &= ~TCSOE_MASK; |
| 135 | mem_stcfg &= ~TOECS_MASK; |
| 136 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; |
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 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 139 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 140 | case 4: |
| 141 | mem_sttime = SBC_IDE_TIMING(PIO4); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 142 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 143 | /* set configuration for RCS2# */ |
| 144 | mem_stcfg &= ~TS_MASK; |
| 145 | mem_stcfg &= ~TCSOE_MASK; |
| 146 | mem_stcfg &= ~TOECS_MASK; |
| 147 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; |
| 148 | break; |
| 149 | } |
| 150 | |
| 151 | au_writel(mem_sttime,MEM_STTIME2); |
| 152 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 153 | } |
| 154 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 155 | 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] | 156 | { |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 157 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
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 | switch(speed) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 160 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 161 | case XFER_MW_DMA_2: |
| 162 | mem_sttime = SBC_IDE_TIMING(MDMA2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 163 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 164 | /* set configuration for RCS2# */ |
| 165 | mem_stcfg &= ~TS_MASK; |
| 166 | mem_stcfg &= ~TCSOE_MASK; |
| 167 | mem_stcfg &= ~TOECS_MASK; |
| 168 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; |
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 | break; |
| 171 | case XFER_MW_DMA_1: |
| 172 | mem_sttime = SBC_IDE_TIMING(MDMA1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 173 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 174 | /* set configuration for RCS2# */ |
| 175 | mem_stcfg &= ~TS_MASK; |
| 176 | mem_stcfg &= ~TCSOE_MASK; |
| 177 | mem_stcfg &= ~TOECS_MASK; |
| 178 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; |
| 179 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 180 | break; |
| 181 | case XFER_MW_DMA_0: |
| 182 | mem_sttime = SBC_IDE_TIMING(MDMA0); |
| 183 | |
| 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_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; |
| 189 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 190 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 191 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 192 | } |
Bartlomiej Zolnierkiewicz | a523a17 | 2007-02-17 02:40:23 +0100 | [diff] [blame] | 193 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 194 | au_writel(mem_sttime,MEM_STTIME2); |
| 195 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | /* |
| 199 | * Multi-Word DMA + DbDMA functions |
| 200 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 201 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 202 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 203 | static int auide_build_dmatable(ide_drive_t *drive) |
| 204 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 205 | int i, iswrite, count = 0; |
| 206 | ide_hwif_t *hwif = HWIF(drive); |
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 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 209 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 210 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 211 | struct scatterlist *sg; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 212 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 213 | iswrite = (rq_data_dir(rq) == WRITE); |
| 214 | /* Save for interrupt context */ |
| 215 | ahwif->drive = drive; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 216 | |
Bartlomiej Zolnierkiewicz | 062f9f0 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 217 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
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 | if (!i) |
| 220 | return 0; |
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 | /* fill the descriptors */ |
| 223 | sg = hwif->sg_table; |
| 224 | while (i && sg_dma_len(sg)) { |
| 225 | u32 cur_addr; |
| 226 | u32 cur_len; |
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 | cur_addr = sg_dma_address(sg); |
| 229 | cur_len = sg_dma_len(sg); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 230 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 231 | while (cur_len) { |
| 232 | u32 flags = DDMA_FLAGS_NOIE; |
| 233 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 234 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 235 | if (++count >= PRD_ENTRIES) { |
| 236 | printk(KERN_WARNING "%s: DMA table too small\n", |
| 237 | drive->name); |
| 238 | goto use_pio_instead; |
| 239 | } |
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 | /* Lets enable intr for the last descriptor only */ |
| 242 | if (1==i) |
| 243 | flags = DDMA_FLAGS_IE; |
| 244 | else |
| 245 | flags = DDMA_FLAGS_NOIE; |
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 | if (iswrite) { |
| 248 | if(!put_source_flags(ahwif->tx_chan, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 249 | (void*) sg_virt(sg), |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 250 | tc, flags)) { |
| 251 | printk(KERN_ERR "%s failed %d\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 252 | __func__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 253 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 254 | } else |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 255 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 256 | if(!put_dest_flags(ahwif->rx_chan, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 257 | (void*) sg_virt(sg), |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 258 | tc, flags)) { |
| 259 | printk(KERN_ERR "%s failed %d\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 260 | __func__, __LINE__); |
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 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 263 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 264 | cur_addr += tc; |
| 265 | cur_len -= tc; |
| 266 | } |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 267 | sg = sg_next(sg); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 268 | i--; |
| 269 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 270 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 271 | if (count) |
| 272 | return 1; |
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 | use_pio_instead: |
Bartlomiej Zolnierkiewicz | 062f9f0 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 275 | ide_destroy_dmatable(drive); |
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 | return 0; /* revert to PIO for this request */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | static int auide_dma_end(ide_drive_t *drive) |
| 281 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 282 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 283 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 284 | if (hwif->sg_nents) { |
Bartlomiej Zolnierkiewicz | 062f9f0 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 285 | ide_destroy_dmatable(drive); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 286 | hwif->sg_nents = 0; |
| 287 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 288 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 289 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | static void auide_dma_start(ide_drive_t *drive ) |
| 293 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 294 | } |
| 295 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 296 | |
| 297 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) |
| 298 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 299 | /* issue cmd to drive */ |
| 300 | ide_execute_command(drive, command, &ide_dma_intr, |
| 301 | (2*WAIT_CMD), NULL); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | static int auide_dma_setup(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 305 | { |
| 306 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 307 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 308 | if (!auide_build_dmatable(drive)) { |
| 309 | ide_map_sg(drive, rq); |
| 310 | return 1; |
| 311 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 312 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 313 | drive->waiting_for_dma = 1; |
| 314 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 315 | } |
| 316 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 317 | static int auide_dma_test_irq(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 318 | { |
| 319 | if (drive->waiting_for_dma == 0) |
| 320 | printk(KERN_WARNING "%s: ide_dma_test_irq \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 321 | called while not waiting\n", drive->name); |
| 322 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 323 | /* If dbdma didn't execute the STOP command yet, the |
| 324 | * active bit is still set |
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 | drive->waiting_for_dma++; |
| 327 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { |
| 328 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 329 | complete\n", drive->name); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 330 | return 1; |
| 331 | } |
| 332 | udelay(10); |
| 333 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 334 | } |
| 335 | |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 336 | static void auide_dma_host_set(ide_drive_t *drive, int on) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 337 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 338 | } |
| 339 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 340 | static void auide_dma_lost_irq(ide_drive_t *drive) |
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 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 343 | } |
| 344 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 345 | static void auide_ddma_tx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 346 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 347 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 348 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 349 | } |
| 350 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 351 | static void auide_ddma_rx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 352 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 353 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 354 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 355 | } |
| 356 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 357 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 358 | |
| 359 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
| 360 | { |
| 361 | dev->dev_id = dev_id; |
| 362 | dev->dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 363 | dev->dev_intlevel = 0; |
| 364 | dev->dev_intpolarity = 0; |
| 365 | dev->dev_tsize = tsize; |
| 366 | dev->dev_devwidth = devwidth; |
| 367 | dev->dev_flags = flags; |
| 368 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 369 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 370 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 371 | static void auide_dma_timeout(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 372 | { |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 373 | ide_hwif_t *hwif = HWIF(drive); |
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 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 376 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 377 | if (auide_dma_test_irq(drive)) |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 378 | return; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 379 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 380 | auide_dma_end(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 381 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 382 | |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 383 | static const struct ide_dma_ops au1xxx_dma_ops = { |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 384 | .dma_host_set = auide_dma_host_set, |
| 385 | .dma_setup = auide_dma_setup, |
| 386 | .dma_exec_cmd = auide_dma_exec_cmd, |
| 387 | .dma_start = auide_dma_start, |
| 388 | .dma_end = auide_dma_end, |
| 389 | .dma_test_irq = auide_dma_test_irq, |
| 390 | .dma_lost_irq = auide_dma_lost_irq, |
| 391 | .dma_timeout = auide_dma_timeout, |
| 392 | }; |
| 393 | |
Bartlomiej Zolnierkiewicz | 8552865 | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 394 | static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d) |
| 395 | { |
| 396 | _auide_hwif *auide = (_auide_hwif *)hwif->hwif_data; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 397 | dbdev_tab_t source_dev_tab, target_dev_tab; |
| 398 | u32 dev_id, tsize, devwidth, flags; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 399 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 400 | dev_id = AU1XXX_ATA_DDMA_REQ; |
| 401 | |
Bartlomiej Zolnierkiewicz | f629b38 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 402 | tsize = 8; /* 1 */ |
| 403 | devwidth = 32; /* 16 */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 404 | |
| 405 | #ifdef IDE_AU1XXX_BURSTMODE |
| 406 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
| 407 | #else |
| 408 | flags = DEV_FLAGS_SYNC; |
| 409 | #endif |
| 410 | |
| 411 | /* setup dev_tab for tx channel */ |
| 412 | auide_init_dbdma_dev( &source_dev_tab, |
| 413 | dev_id, |
| 414 | tsize, devwidth, DEV_FLAGS_OUT | flags); |
| 415 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 416 | |
| 417 | auide_init_dbdma_dev( &source_dev_tab, |
| 418 | dev_id, |
| 419 | tsize, devwidth, DEV_FLAGS_IN | flags); |
| 420 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 421 | |
| 422 | /* We also need to add a target device for the DMA */ |
| 423 | auide_init_dbdma_dev( &target_dev_tab, |
| 424 | (u32)DSCR_CMD0_ALWAYS, |
| 425 | tsize, devwidth, DEV_FLAGS_ANYUSE); |
| 426 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); |
| 427 | |
| 428 | /* Get a channel for TX */ |
| 429 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, |
| 430 | auide->tx_dev_id, |
| 431 | auide_ddma_tx_callback, |
| 432 | (void*)auide); |
| 433 | |
| 434 | /* Get a channel for RX */ |
| 435 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 436 | auide->target_dev_id, |
| 437 | auide_ddma_rx_callback, |
| 438 | (void*)auide); |
| 439 | |
| 440 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 441 | NUM_DESCRIPTORS); |
| 442 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 443 | NUM_DESCRIPTORS); |
| 444 | |
Bartlomiej Zolnierkiewicz | 5df37c3 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 445 | hwif->dmatable_cpu = dma_alloc_coherent(hwif->dev, |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 446 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
| 447 | &hwif->dmatable_dma, GFP_KERNEL); |
| 448 | |
| 449 | au1xxx_dbdma_start( auide->tx_chan ); |
| 450 | au1xxx_dbdma_start( auide->rx_chan ); |
| 451 | |
| 452 | return 0; |
| 453 | } |
| 454 | #else |
Bartlomiej Zolnierkiewicz | 8552865 | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 455 | static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 456 | { |
Bartlomiej Zolnierkiewicz | 8552865 | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 457 | _auide_hwif *auide = (_auide_hwif *)hwif->hwif_data; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 458 | dbdev_tab_t source_dev_tab; |
| 459 | int flags; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 460 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 461 | #ifdef IDE_AU1XXX_BURSTMODE |
| 462 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 463 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 464 | flags = DEV_FLAGS_SYNC; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 465 | #endif |
| 466 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 467 | /* setup dev_tab for tx channel */ |
| 468 | auide_init_dbdma_dev( &source_dev_tab, |
| 469 | (u32)DSCR_CMD0_ALWAYS, |
| 470 | 8, 32, DEV_FLAGS_OUT | flags); |
| 471 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 472 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 473 | auide_init_dbdma_dev( &source_dev_tab, |
| 474 | (u32)DSCR_CMD0_ALWAYS, |
| 475 | 8, 32, DEV_FLAGS_IN | flags); |
| 476 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 477 | |
| 478 | /* Get a channel for TX */ |
| 479 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, |
| 480 | auide->tx_dev_id, |
| 481 | NULL, |
| 482 | (void*)auide); |
| 483 | |
| 484 | /* Get a channel for RX */ |
| 485 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 486 | DSCR_CMD0_ALWAYS, |
| 487 | NULL, |
| 488 | (void*)auide); |
| 489 | |
| 490 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 491 | NUM_DESCRIPTORS); |
| 492 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 493 | NUM_DESCRIPTORS); |
| 494 | |
| 495 | au1xxx_dbdma_start( auide->tx_chan ); |
| 496 | au1xxx_dbdma_start( auide->rx_chan ); |
| 497 | |
| 498 | return 0; |
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 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 501 | |
| 502 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) |
| 503 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 504 | int i; |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 505 | unsigned long *ata_regs = hw->io_ports_array; |
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 | /* FIXME? */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 508 | for (i = 0; i < 8; i++) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 509 | *ata_regs++ = ahwif->regbase + (i << AU1XXX_ATA_REG_OFFSET); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 510 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 511 | /* set the Alternative Status register */ |
| 512 | *ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 513 | } |
| 514 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 515 | static const struct ide_port_ops au1xxx_port_ops = { |
| 516 | .set_pio_mode = au1xxx_set_pio_mode, |
| 517 | .set_dma_mode = auide_set_dma_mode, |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 518 | }; |
| 519 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 520 | static const struct ide_port_info au1xxx_port_info = { |
Bartlomiej Zolnierkiewicz | 8552865 | 2008-04-26 22:25:23 +0200 | [diff] [blame] | 521 | .init_dma = auide_ddma_init, |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 522 | .port_ops = &au1xxx_port_ops, |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 523 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 524 | .dma_ops = &au1xxx_dma_ops, |
| 525 | #endif |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 526 | .host_flags = IDE_HFLAG_POST_SET_MODE | |
Bartlomiej Zolnierkiewicz | 807b90d | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 527 | IDE_HFLAG_NO_IO_32BIT | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 528 | IDE_HFLAG_UNMASK_IRQS, |
| 529 | .pio_mask = ATA_PIO4, |
| 530 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 531 | .mwdma_mask = ATA_MWDMA2, |
| 532 | #endif |
| 533 | }; |
| 534 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 535 | static int au_ide_probe(struct device *dev) |
| 536 | { |
| 537 | struct platform_device *pdev = to_platform_device(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 538 | _auide_hwif *ahwif = &auide_hwif; |
| 539 | ide_hwif_t *hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 540 | struct resource *res; |
| 541 | int ret = 0; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 542 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 543 | hw_regs_t hw; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 544 | |
| 545 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 546 | char *mode = "MWDMA2"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 547 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 548 | char *mode = "PIO+DDMA(offload)"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 549 | #endif |
| 550 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 551 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 552 | ahwif->irq = platform_get_irq(pdev, 0); |
| 553 | |
| 554 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 555 | |
| 556 | if (res == NULL) { |
| 557 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); |
| 558 | ret = -ENODEV; |
| 559 | goto out; |
| 560 | } |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 561 | if (ahwif->irq < 0) { |
| 562 | pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); |
| 563 | ret = -ENODEV; |
| 564 | goto out; |
| 565 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 566 | |
Sergei Shtylyov | b4dcaea | 2008-04-17 01:14:33 +0200 | [diff] [blame] | 567 | if (!request_mem_region(res->start, res->end - res->start + 1, |
| 568 | pdev->name)) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 569 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 570 | ret = -EBUSY; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 571 | goto out; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 572 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 573 | |
Sergei Shtylyov | b4dcaea | 2008-04-17 01:14:33 +0200 | [diff] [blame] | 574 | ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 575 | if (ahwif->regbase == 0) { |
| 576 | ret = -ENOMEM; |
| 577 | goto out; |
| 578 | } |
| 579 | |
Bartlomiej Zolnierkiewicz | 4f7bada | 2008-04-26 17:36:33 +0200 | [diff] [blame] | 580 | hwif = ide_find_port(); |
| 581 | if (hwif == NULL) { |
| 582 | ret = -ENOENT; |
| 583 | goto out; |
| 584 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 585 | |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 586 | memset(&hw, 0, sizeof(hw)); |
| 587 | auide_setup_ports(&hw, ahwif); |
Bartlomiej Zolnierkiewicz | aa79a2f | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 588 | hw.irq = ahwif->irq; |
Bartlomiej Zolnierkiewicz | ed1f788 | 2008-02-01 23:09:32 +0100 | [diff] [blame] | 589 | hw.dev = dev; |
Bartlomiej Zolnierkiewicz | aa79a2f | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 590 | hw.chipset = ide_au1xxx; |
| 591 | |
| 592 | ide_init_port_hw(hwif, &hw); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 593 | |
Bartlomiej Zolnierkiewicz | 5df37c3 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 594 | hwif->dev = dev; |
| 595 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 596 | /* If the user has selected DDMA assisted copies, |
| 597 | then set up a few local I/O function entry points |
| 598 | */ |
| 599 | |
| 600 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 601 | hwif->INSW = auide_insw; |
| 602 | hwif->OUTSW = auide_outsw; |
| 603 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 604 | hwif->select_data = 0; /* no chipset-specific code */ |
| 605 | hwif->config_data = 0; /* no chipset-specific code */ |
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 | auide_hwif.hwif = hwif; |
| 608 | hwif->hwif_data = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 609 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 610 | idx[0] = hwif->index; |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 611 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 612 | ide_device_add(idx, &au1xxx_port_info); |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 613 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 614 | dev_set_drvdata(dev, hwif); |
| 615 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 616 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 617 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 618 | out: |
| 619 | return ret; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 620 | } |
| 621 | |
| 622 | static int au_ide_remove(struct device *dev) |
| 623 | { |
| 624 | struct platform_device *pdev = to_platform_device(dev); |
| 625 | struct resource *res; |
| 626 | ide_hwif_t *hwif = dev_get_drvdata(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 627 | _auide_hwif *ahwif = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 628 | |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 629 | ide_unregister(hwif); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 630 | |
| 631 | iounmap((void *)ahwif->regbase); |
| 632 | |
| 633 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Sergei Shtylyov | b4dcaea | 2008-04-17 01:14:33 +0200 | [diff] [blame] | 634 | release_mem_region(res->start, res->end - res->start + 1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 635 | |
| 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | static struct device_driver au1200_ide_driver = { |
| 640 | .name = "au1200-ide", |
| 641 | .bus = &platform_bus_type, |
| 642 | .probe = au_ide_probe, |
| 643 | .remove = au_ide_remove, |
| 644 | }; |
| 645 | |
| 646 | static int __init au_ide_init(void) |
| 647 | { |
| 648 | return driver_register(&au1200_ide_driver); |
| 649 | } |
| 650 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 651 | static void __exit au_ide_exit(void) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 652 | { |
| 653 | driver_unregister(&au1200_ide_driver); |
| 654 | } |
| 655 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 656 | MODULE_LICENSE("GPL"); |
| 657 | MODULE_DESCRIPTION("AU1200 IDE driver"); |
| 658 | |
| 659 | module_init(au_ide_init); |
| 660 | module_exit(au_ide_exit); |