projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/drivers/ide/legacy/q40ide.c -- Q40 I/O port IDE Driver | |
| 3 | * | |
| 4 | * (c) Richard Zidlicky | |
| 5 | * | |
| 6 | * This file is subject to the terms and conditions of the GNU General Public | |
| 7 | * License. See the file COPYING in the main directory of this archive for | |
| 8 | * more details. | |
| 9 | * | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/types.h> | |
| 14 | #include <linux/mm.h> | |
| 15 | #include <linux/interrupt.h> | |
| 16 | #include <linux/blkdev.h> | |
| 17 | #include <linux/hdreg.h> | |
| 18 | ||
| 19 | #include <linux/ide.h> | |
| 20 | ||
| 21 | /* | |
| 22 | * Bases of the IDE interfaces | |
| 23 | */ | |
| 24 | ||
| 25 | #define Q40IDE_NUM_HWIFS 2 | |
| 26 | ||
| 27 | #define PCIDE_BASE1 0x1f0 | |
| 28 | #define PCIDE_BASE2 0x170 | |
| 29 | #define PCIDE_BASE3 0x1e8 | |
| 30 | #define PCIDE_BASE4 0x168 | |
| 31 | #define PCIDE_BASE5 0x1e0 | |
| 32 | #define PCIDE_BASE6 0x160 | |
| 33 | ||
| 34 | static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = { | |
| 35 | PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4 , PCIDE_BASE5, | |
| 36 | PCIDE_BASE6 */ | |
| 37 | }; | |
| 38 | ||
| 39 | ||
| 40 | /* | |
| 41 | * Offsets from one of the above bases | |
| 42 | */ | |
| 43 | ||
| 44 | /* used to do addr translation here but it is easier to do in setup ports */ | |
| 45 | /*#define IDE_OFF_B(x) ((unsigned long)Q40_ISA_IO_B((IDE_##x##_OFFSET)))*/ | |
| 46 | ||
| 47 | #define IDE_OFF_B(x) ((unsigned long)((IDE_##x##_OFFSET))) | |
| 48 | #define IDE_OFF_W(x) ((unsigned long)((IDE_##x##_OFFSET))) | |
| 49 | ||
| 50 | static const int pcide_offsets[IDE_NR_PORTS] = { | |
| 51 | IDE_OFF_W(DATA), IDE_OFF_B(ERROR), IDE_OFF_B(NSECTOR), IDE_OFF_B(SECTOR), | |
| 52 | IDE_OFF_B(LCYL), IDE_OFF_B(HCYL), 6 /*IDE_OFF_B(CURRENT)*/, IDE_OFF_B(STATUS), | |
| 53 | 518/*IDE_OFF(CMD)*/ | |
| 54 | }; | |
| 55 | ||
| 56 | static int q40ide_default_irq(unsigned long base) | |
| 57 | { | |
| 58 | switch (base) { | |
| 59 | case 0x1f0: return 14; | |
| 60 | case 0x170: return 15; | |
| 61 | case 0x1e8: return 11; | |
| 62 | default: | |
| 63 | return 0; | |
| 64 | } | |
| 65 | } | |
| 66 | ||
| 67 | ||
| 68 | /* | |
| 69 | * This is very similar to ide_setup_ports except that addresses | |
| 70 | * are pretranslated for q40 ISA access | |
| 71 | */ | |
| 72 | void q40_ide_setup_ports ( hw_regs_t *hw, | |
| 73 | unsigned long base, int *offsets, | |
| 74 | unsigned long ctrl, unsigned long intr, | |
| 75 | ide_ack_intr_t *ack_intr, | |
| 76 | /* | |
| 77 | * ide_io_ops_t *iops, | |
| 78 | */ | |
| 79 | int irq) | |
| 80 | { | |
| 81 | int i; | |
| 82 | ||
| 83 | for (i = 0; i < IDE_NR_PORTS; i++) { | |
| 84 | /* BIG FAT WARNING: | |
| 85 | assumption: only DATA port is ever used in 16 bit mode */ | |
| 86 | if ( i==0 ) | |
| 87 | hw->io_ports[i] = Q40_ISA_IO_W(base + offsets[i]); | |
| 88 | else | |
| 89 | hw->io_ports[i] = Q40_ISA_IO_B(base + offsets[i]); | |
| 90 | } | |
| 91 | ||
| 92 | hw->irq = irq; | |
| 93 | hw->dma = NO_DMA; | |
| 94 | hw->ack_intr = ack_intr; | |
| 95 | /* | |
| 96 | * hw->iops = iops; | |
| 97 | */ | |
| 98 | } | |
| 99 | ||
| 100 | ||
| 101 | ||
| 102 | /* | |
| 103 | * the static array is needed to have the name reported in /proc/ioports, | |
| 104 |