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drivers/ide/pmac.c
45.8 KB
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/* |
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* Support for IDE interfaces on PowerMacs. |
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* |
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* These IDE interfaces are memory-mapped and have a DBDMA channel * for doing DMA. * * Copyright (C) 1998-2003 Paul Mackerras & Ben. Herrenschmidt |
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* Copyright (C) 2007-2008 Bartlomiej Zolnierkiewicz |
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* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * Some code taken from drivers/ide/ide-dma.c: * * Copyright (c) 1995-1998 Mark Lord * * TODO: - Use pre-calculated (kauai) timing tables all the time and * get rid of the "rounded" tables used previously, so we have the * same table format for all controllers and can then just have one * big table * */ |
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#include <linux/types.h> #include <linux/kernel.h> |
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#include <linux/init.h> #include <linux/delay.h> #include <linux/ide.h> #include <linux/notifier.h> #include <linux/reboot.h> #include <linux/pci.h> #include <linux/adb.h> #include <linux/pmu.h> #include <linux/scatterlist.h> |
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#include <linux/slab.h> |
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#include <asm/prom.h> #include <asm/io.h> #include <asm/dbdma.h> #include <asm/ide.h> #include <asm/pci-bridge.h> #include <asm/machdep.h> #include <asm/pmac_feature.h> #include <asm/sections.h> #include <asm/irq.h> |
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#include <asm/mediabay.h> |
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#define DRV_NAME "ide-pmac" |
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#undef IDE_PMAC_DEBUG #define DMA_WAIT_TIMEOUT 50 typedef struct pmac_ide_hwif { unsigned long regbase; int irq; int kind; int aapl_bus_id; |
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unsigned broken_dma : 1; unsigned broken_dma_warn : 1; struct device_node* node; struct macio_dev *mdev; u32 timings[4]; volatile u32 __iomem * *kauai_fcr; |
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ide_hwif_t *hwif; |
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/* Those fields are duplicating what is in hwif. We currently * can't use the hwif ones because of some assumptions that are * beeing done by the generic code about the kind of dma controller * and format of the dma table. This will have to be fixed though. */ volatile struct dbdma_regs __iomem * dma_regs; struct dbdma_cmd* dma_table_cpu; |
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} pmac_ide_hwif_t; |
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enum { controller_ohare, /* OHare based */ controller_heathrow, /* Heathrow/Paddington */ controller_kl_ata3, /* KeyLargo ATA-3 */ controller_kl_ata4, /* KeyLargo ATA-4 */ controller_un_ata6, /* UniNorth2 ATA-6 */ controller_k2_ata6, /* K2 ATA-6 */ controller_sh_ata6, /* Shasta ATA-6 */ }; static const char* model_name[] = { "OHare ATA", /* OHare based */ "Heathrow ATA", /* Heathrow/Paddington */ "KeyLargo ATA-3", /* KeyLargo ATA-3 (MDMA only) */ "KeyLargo ATA-4", /* KeyLargo ATA-4 (UDMA/66) */ "UniNorth ATA-6", /* UniNorth2 ATA-6 (UDMA/100) */ "K2 ATA-6", /* K2 ATA-6 (UDMA/100) */ "Shasta ATA-6", /* Shasta ATA-6 (UDMA/133) */ }; /* * Extra registers, both 32-bit little-endian */ #define IDE_TIMING_CONFIG 0x200 #define IDE_INTERRUPT 0x300 /* Kauai (U2) ATA has different register setup */ #define IDE_KAUAI_PIO_CONFIG 0x200 #define IDE_KAUAI_ULTRA_CONFIG 0x210 #define IDE_KAUAI_POLL_CONFIG 0x220 /* * Timing configuration register definitions */ /* Number of IDE_SYSCLK_NS ticks, argument is in nanoseconds */ #define SYSCLK_TICKS(t) (((t) + IDE_SYSCLK_NS - 1) / IDE_SYSCLK_NS) #define SYSCLK_TICKS_66(t) (((t) + IDE_SYSCLK_66_NS - 1) / IDE_SYSCLK_66_NS) #define IDE_SYSCLK_NS 30 /* 33Mhz cell */ #define IDE_SYSCLK_66_NS 15 /* 66Mhz cell */ /* 133Mhz cell, found in shasta. * See comments about 100 Mhz Uninorth 2... * Note that PIO_MASK and MDMA_MASK seem to overlap */ #define TR_133_PIOREG_PIO_MASK 0xff000fff #define TR_133_PIOREG_MDMA_MASK 0x00fff800 #define TR_133_UDMAREG_UDMA_MASK 0x0003ffff #define TR_133_UDMAREG_UDMA_EN 0x00000001 /* 100Mhz cell, found in Uninorth 2. I don't have much infos about * this one yet, it appears as a pci device (106b/0033) on uninorth * internal PCI bus and it's clock is controlled like gem or fw. It * appears to be an evolution of keylargo ATA4 with a timing register * extended to 2 32bits registers and a similar DBDMA channel. Other * registers seem to exist but I can't tell much about them. * * So far, I'm using pre-calculated tables for this extracted from * the values used by the MacOS X driver. * * The "PIO" register controls PIO and MDMA timings, the "ULTRA" * register controls the UDMA timings. At least, it seems bit 0 * of this one enables UDMA vs. MDMA, and bits 4..7 are the * cycle time in units of 10ns. Bits 8..15 are used by I don't * know their meaning yet */ #define TR_100_PIOREG_PIO_MASK 0xff000fff #define TR_100_PIOREG_MDMA_MASK 0x00fff000 #define TR_100_UDMAREG_UDMA_MASK 0x0000ffff #define TR_100_UDMAREG_UDMA_EN 0x00000001 /* 66Mhz cell, found in KeyLargo. Can do ultra mode 0 to 2 on * 40 connector cable and to 4 on 80 connector one. * Clock unit is 15ns (66Mhz) * * 3 Values can be programmed: * - Write data setup, which appears to match the cycle time. They * also call it DIOW setup. * - Ready to pause time (from spec) * - Address setup. That one is weird. I don't see where exactly * it fits in UDMA cycles, I got it's name from an obscure piece * of commented out code in Darwin. They leave it to 0, we do as * well, despite a comment that would lead to think it has a * min value of 45ns. * Apple also add 60ns to the write data setup (or cycle time ?) on * reads. */ #define TR_66_UDMA_MASK 0xfff00000 #define TR_66_UDMA_EN 0x00100000 /* Enable Ultra mode for DMA */ #define TR_66_UDMA_ADDRSETUP_MASK 0xe0000000 /* Address setup */ #define TR_66_UDMA_ADDRSETUP_SHIFT 29 #define TR_66_UDMA_RDY2PAUS_MASK 0x1e000000 /* Ready 2 pause time */ #define TR_66_UDMA_RDY2PAUS_SHIFT 25 #define TR_66_UDMA_WRDATASETUP_MASK 0x01e00000 /* Write data setup time */ #define TR_66_UDMA_WRDATASETUP_SHIFT 21 #define TR_66_MDMA_MASK 0x000ffc00 #define TR_66_MDMA_RECOVERY_MASK 0x000f8000 #define TR_66_MDMA_RECOVERY_SHIFT 15 #define TR_66_MDMA_ACCESS_MASK 0x00007c00 #define TR_66_MDMA_ACCESS_SHIFT 10 #define TR_66_PIO_MASK 0x000003ff #define TR_66_PIO_RECOVERY_MASK 0x000003e0 #define TR_66_PIO_RECOVERY_SHIFT 5 #define TR_66_PIO_ACCESS_MASK 0x0000001f #define TR_66_PIO_ACCESS_SHIFT 0 /* 33Mhz cell, found in OHare, Heathrow (& Paddington) and KeyLargo * Can do pio & mdma modes, clock unit is 30ns (33Mhz) * * The access time and recovery time can be programmed. Some older * Darwin code base limit OHare to 150ns cycle time. I decided to do * the same here fore safety against broken old hardware ;) * The HalfTick bit, when set, adds half a clock (15ns) to the access * time and removes one from recovery. It's not supported on KeyLargo * implementation afaik. The E bit appears to be set for PIO mode 0 and * is used to reach long timings used in this mode. */ #define TR_33_MDMA_MASK 0x003ff800 #define TR_33_MDMA_RECOVERY_MASK 0x001f0000 #define TR_33_MDMA_RECOVERY_SHIFT 16 #define TR_33_MDMA_ACCESS_MASK 0x0000f800 #define TR_33_MDMA_ACCESS_SHIFT 11 #define TR_33_MDMA_HALFTICK 0x00200000 #define TR_33_PIO_MASK 0x000007ff #define TR_33_PIO_E 0x00000400 #define TR_33_PIO_RECOVERY_MASK 0x000003e0 #define TR_33_PIO_RECOVERY_SHIFT 5 #define TR_33_PIO_ACCESS_MASK 0x0000001f #define TR_33_PIO_ACCESS_SHIFT 0 /* * Interrupt register definitions */ #define IDE_INTR_DMA 0x80000000 #define IDE_INTR_DEVICE 0x40000000 /* * FCR Register on Kauai. Not sure what bit 0x4 is ... */ #define KAUAI_FCR_UATA_MAGIC 0x00000004 #define KAUAI_FCR_UATA_RESET_N 0x00000002 #define KAUAI_FCR_UATA_ENABLE 0x00000001 |
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/* Rounded Multiword DMA timings * * I gave up finding a generic formula for all controller * types and instead, built tables based on timing values * used by Apple in Darwin's implementation. */ struct mdma_timings_t { int accessTime; int recoveryTime; int cycleTime; }; |
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struct mdma_timings_t mdma_timings_33[] = |
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{ { 240, 240, 480 }, { 180, 180, 360 }, { 135, 135, 270 }, { 120, 120, 240 }, { 105, 105, 210 }, { 90, 90, 180 }, { 75, 75, 150 }, { 75, 45, 120 }, { 0, 0, 0 } }; |
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struct mdma_timings_t mdma_timings_33k[] = |
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{ { 240, 240, 480 }, { 180, 180, 360 }, { 150, 150, 300 }, { 120, 120, 240 }, { 90, 120, 210 }, { 90, 90, 180 }, { 90, 60, 150 }, { 90, 30, 120 }, { 0, 0, 0 } }; |
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struct mdma_timings_t mdma_timings_66[] = |
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{ { 240, 240, 480 }, { 180, 180, 360 }, { 135, 135, 270 }, { 120, 120, 240 }, { 105, 105, 210 }, { 90, 90, 180 }, { 90, 75, 165 }, { 75, 45, 120 }, { 0, 0, 0 } }; /* KeyLargo ATA-4 Ultra DMA timings (rounded) */ struct { int addrSetup; /* ??? */ int rdy2pause; int wrDataSetup; |
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} kl66_udma_timings[] = |
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{ { 0, 180, 120 }, /* Mode 0 */ { 0, 150, 90 }, /* 1 */ { 0, 120, 60 }, /* 2 */ { 0, 90, 45 }, /* 3 */ { 0, 90, 30 } /* 4 */ }; /* UniNorth 2 ATA/100 timings */ struct kauai_timing { int cycle_time; u32 timing_reg; }; |
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static struct kauai_timing kauai_pio_timings[] = |
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{ { 930 , 0x08000fff }, { 600 , 0x08000a92 }, { 383 , 0x0800060f }, { 360 , 0x08000492 }, { 330 , 0x0800048f }, { 300 , 0x080003cf }, { 270 , 0x080003cc }, { 240 , 0x0800038b }, { 239 , 0x0800030c }, { 180 , 0x05000249 }, |
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{ 120 , 0x04000148 }, { 0 , 0 }, |
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}; |
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static struct kauai_timing kauai_mdma_timings[] = |
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{ { 1260 , 0x00fff000 }, { 480 , 0x00618000 }, { 360 , 0x00492000 }, { 270 , 0x0038e000 }, { 240 , 0x0030c000 }, { 210 , 0x002cb000 }, { 180 , 0x00249000 }, { 150 , 0x00209000 }, { 120 , 0x00148000 }, { 0 , 0 }, }; |
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static struct kauai_timing kauai_udma_timings[] = |
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{ { 120 , 0x000070c0 }, { 90 , 0x00005d80 }, { 60 , 0x00004a60 }, { 45 , 0x00003a50 }, { 30 , 0x00002a30 }, { 20 , 0x00002921 }, { 0 , 0 }, }; |
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static struct kauai_timing shasta_pio_timings[] = |
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{ { 930 , 0x08000fff }, { 600 , 0x0A000c97 }, { 383 , 0x07000712 }, { 360 , 0x040003cd }, { 330 , 0x040003cd }, { 300 , 0x040003cd }, { 270 , 0x040003cd }, { 240 , 0x040003cd }, { 239 , 0x040003cd }, { 180 , 0x0400028b }, |
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{ 120 , 0x0400010a }, { 0 , 0 }, |
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}; |
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static struct kauai_timing shasta_mdma_timings[] = |
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{ { 1260 , 0x00fff000 }, { 480 , 0x00820800 }, { 360 , 0x00820800 }, { 270 , 0x00820800 }, { 240 , 0x00820800 }, { 210 , 0x00820800 }, { 180 , 0x00820800 }, { 150 , 0x0028b000 }, { 120 , 0x001ca000 }, { 0 , 0 }, }; |
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static struct kauai_timing shasta_udma133_timings[] = |
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{ { 120 , 0x00035901, }, { 90 , 0x000348b1, }, { 60 , 0x00033881, }, { 45 , 0x00033861, }, { 30 , 0x00033841, }, { 20 , 0x00033031, }, { 15 , 0x00033021, }, { 0 , 0 }, }; static inline u32 kauai_lookup_timing(struct kauai_timing* table, int cycle_time) { int i; for (i=0; table[i].cycle_time; i++) if (cycle_time > table[i+1].cycle_time) return table[i].timing_reg; |
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BUG(); |
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return 0; } /* allow up to 256 DBDMA commands per xfer */ #define MAX_DCMDS 256 /* * Wait 1s for disk to answer on IDE bus after a hard reset * of the device (via GPIO/FCR). * * Some devices seem to "pollute" the bus even after dropping * the BSY bit (typically some combo drives slave on the UDMA * bus) after a hard reset. Since we hard reset all drives on * KeyLargo ATA66, we have to keep that delay around. I may end * up not hard resetting anymore on these and keep the delay only * for older interfaces instead (we have to reset when coming * from MacOS...) --BenH. */ #define IDE_WAKEUP_DELAY (1*HZ) |
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static int pmac_ide_init_dma(ide_hwif_t *, const struct ide_port_info *); |
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#define PMAC_IDE_REG(x) \ |
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((void __iomem *)((drive)->hwif->io_ports.data_addr + (x))) |
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/* * Apply the timings of the proper unit (master/slave) to the shared * timing register when selecting that unit. This version is for * ASICs with a single timing register */ |
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static void pmac_ide_apply_timings(ide_drive_t *drive) |
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{ |
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ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
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if (drive->dn & 1) |
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writel(pmif->timings[1], PMAC_IDE_REG(IDE_TIMING_CONFIG)); else writel(pmif->timings[0], PMAC_IDE_REG(IDE_TIMING_CONFIG)); (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG)); } /* * Apply the timings of the proper unit (master/slave) to the shared * timing register when selecting that unit. This version is for * ASICs with a dual timing register (Kauai) */ |
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static void pmac_ide_kauai_apply_timings(ide_drive_t *drive) |
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{ |
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ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
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if (drive->dn & 1) { |
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writel(pmif->timings[1], PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG)); writel(pmif->timings[3], PMAC_IDE_REG(IDE_KAUAI_ULTRA_CONFIG)); } else { writel(pmif->timings[0], PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG)); writel(pmif->timings[2], PMAC_IDE_REG(IDE_KAUAI_ULTRA_CONFIG)); } (void)readl(PMAC_IDE_REG(IDE_KAUAI_PIO_CONFIG)); } /* * Force an update of controller timing values for a given drive */ |
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static void |
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pmac_ide_do_update_timings(ide_drive_t *drive) { |
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ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
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if (pmif->kind == controller_sh_ata6 || pmif->kind == controller_un_ata6 || pmif->kind == controller_k2_ata6) |
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pmac_ide_kauai_apply_timings(drive); |
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else |
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pmac_ide_apply_timings(drive); } static void pmac_dev_select(ide_drive_t *drive) { pmac_ide_apply_timings(drive); writeb(drive->select | ATA_DEVICE_OBS, (void __iomem *)drive->hwif->io_ports.device_addr); } static void pmac_kauai_dev_select(ide_drive_t *drive) { pmac_ide_kauai_apply_timings(drive); writeb(drive->select | ATA_DEVICE_OBS, (void __iomem *)drive->hwif->io_ports.device_addr); |
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} |
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static void pmac_exec_command(ide_hwif_t *hwif, u8 cmd) { writeb(cmd, (void __iomem *)hwif->io_ports.command_addr); (void)readl((void __iomem *)(hwif->io_ports.data_addr + IDE_TIMING_CONFIG)); } |
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static void pmac_write_devctl(ide_hwif_t *hwif, u8 ctl) |
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{ |
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writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr); (void)readl((void __iomem *)(hwif->io_ports.data_addr + IDE_TIMING_CONFIG)); } |
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/* |
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* Old tuning functions (called on hdparm -p), sets up drive PIO timings */ |
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static void pmac_ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
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{ |
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pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
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const u8 pio = drive->pio_mode - XFER_PIO_0; |
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struct ide_timing *tim = ide_timing_find_mode(XFER_PIO_0 + pio); |
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u32 *timings, t; |
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unsigned accessTicks, recTicks; unsigned accessTime, recTime; |
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unsigned int cycle_time; |
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/* which drive is it ? */ |
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timings = &pmif->timings[drive->dn & 1]; |
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t = *timings; |
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cycle_time = ide_pio_cycle_time(drive, pio); |
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switch (pmif->kind) { case controller_sh_ata6: { /* 133Mhz cell */ |
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u32 tr = kauai_lookup_timing(shasta_pio_timings, cycle_time); |
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t = (t & ~TR_133_PIOREG_PIO_MASK) | tr; |
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break; } case controller_un_ata6: case controller_k2_ata6: { /* 100Mhz cell */ |
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u32 tr = kauai_lookup_timing(kauai_pio_timings, cycle_time); |
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t = (t & ~TR_100_PIOREG_PIO_MASK) | tr; |
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break; } case controller_kl_ata4: /* 66Mhz cell */ |
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recTime = cycle_time - tim->active - tim->setup; |
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recTime = max(recTime, 150U); |
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accessTime = tim->active; |
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accessTime = max(accessTime, 150U); accessTicks = SYSCLK_TICKS_66(accessTime); accessTicks = min(accessTicks, 0x1fU); recTicks = SYSCLK_TICKS_66(recTime); recTicks = min(recTicks, 0x1fU); |
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t = (t & ~TR_66_PIO_MASK) | (accessTicks << TR_66_PIO_ACCESS_SHIFT) | (recTicks << TR_66_PIO_RECOVERY_SHIFT); |
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break; default: { /* 33Mhz cell */ int ebit = 0; |
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recTime = cycle_time - tim->active - tim->setup; |
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recTime = max(recTime, 150U); |
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accessTime = tim->active; |
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accessTime = max(accessTime, 150U); accessTicks = SYSCLK_TICKS(accessTime); accessTicks = min(accessTicks, 0x1fU); accessTicks = max(accessTicks, 4U); recTicks = SYSCLK_TICKS(recTime); recTicks = min(recTicks, 0x1fU); recTicks = max(recTicks, 5U) - 4; if (recTicks > 9) { recTicks--; /* guess, but it's only for PIO0, so... */ ebit = 1; } |
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t = (t & ~TR_33_PIO_MASK) | |
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(accessTicks << TR_33_PIO_ACCESS_SHIFT) | (recTicks << TR_33_PIO_RECOVERY_SHIFT); if (ebit) |
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t |= TR_33_PIO_E; |
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break; } } #ifdef IDE_PMAC_DEBUG printk(KERN_ERR "%s: Set PIO timing for mode %d, reg: 0x%08x ", drive->name, pio, *timings); #endif |
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*timings = t; |
c15d5d43e
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559 |
pmac_ide_do_update_timings(drive); |
1da177e4c
|
560 |
} |
1da177e4c
|
561 562 563 |
/* * Calculate KeyLargo ATA/66 UDMA timings */ |
aacaf9bd9
|
564 |
static int |
1da177e4c
|
565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 |
set_timings_udma_ata4(u32 *timings, u8 speed) { unsigned rdyToPauseTicks, wrDataSetupTicks, addrTicks; if (speed > XFER_UDMA_4) return 1; rdyToPauseTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].rdy2pause); wrDataSetupTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].wrDataSetup); addrTicks = SYSCLK_TICKS_66(kl66_udma_timings[speed & 0xf].addrSetup); *timings = ((*timings) & ~(TR_66_UDMA_MASK | TR_66_MDMA_MASK)) | (wrDataSetupTicks << TR_66_UDMA_WRDATASETUP_SHIFT) | (rdyToPauseTicks << TR_66_UDMA_RDY2PAUS_SHIFT) | (addrTicks <<TR_66_UDMA_ADDRSETUP_SHIFT) | TR_66_UDMA_EN; #ifdef IDE_PMAC_DEBUG printk(KERN_ERR "ide_pmac: Set UDMA timing for mode %d, reg: 0x%08x ", speed & 0xf, *timings); #endif return 0; } /* * Calculate Kauai ATA/100 UDMA timings */ |
aacaf9bd9
|
593 |
static int |
1da177e4c
|
594 595 596 597 598 599 600 601 |
set_timings_udma_ata6(u32 *pio_timings, u32 *ultra_timings, u8 speed) { struct ide_timing *t = ide_timing_find_mode(speed); u32 tr; if (speed > XFER_UDMA_5 || t == NULL) return 1; tr = kauai_lookup_timing(kauai_udma_timings, (int)t->udma); |
1da177e4c
|
602 603 604 605 606 607 608 609 610 |
*ultra_timings = ((*ultra_timings) & ~TR_100_UDMAREG_UDMA_MASK) | tr; *ultra_timings = (*ultra_timings) | TR_100_UDMAREG_UDMA_EN; return 0; } /* * Calculate Shasta ATA/133 UDMA timings */ |
aacaf9bd9
|
611 |
static int |
1da177e4c
|
612 613 614 615 616 617 618 619 |
set_timings_udma_shasta(u32 *pio_timings, u32 *ultra_timings, u8 speed) { struct ide_timing *t = ide_timing_find_mode(speed); u32 tr; if (speed > XFER_UDMA_6 || t == NULL) return 1; tr = kauai_lookup_timing(shasta_udma133_timings, (int)t->udma); |
1da177e4c
|
620 621 622 623 624 625 626 627 628 |
*ultra_timings = ((*ultra_timings) & ~TR_133_UDMAREG_UDMA_MASK) | tr; *ultra_timings = (*ultra_timings) | TR_133_UDMAREG_UDMA_EN; return 0; } /* * Calculate MDMA timings for all cells */ |
90f72eca3
|
629 |
static void |
1da177e4c
|
630 |
set_timings_mdma(ide_drive_t *drive, int intf_type, u32 *timings, u32 *timings2, |
90f72eca3
|
631 |
u8 speed) |
1da177e4c
|
632 |
{ |
4dde4492d
|
633 |
u16 *id = drive->id; |
1da177e4c
|
634 635 636 637 638 639 640 641 642 643 644 |
int cycleTime, accessTime = 0, recTime = 0; unsigned accessTicks, recTicks; struct mdma_timings_t* tm = NULL; int i; /* Get default cycle time for mode */ switch(speed & 0xf) { case 0: cycleTime = 480; break; case 1: cycleTime = 150; break; case 2: cycleTime = 120; break; default: |
90f72eca3
|
645 646 |
BUG(); break; |
1da177e4c
|
647 |
} |
90f72eca3
|
648 649 |
/* Check if drive provides explicit DMA cycle time */ |
4dde4492d
|
650 651 |
if ((id[ATA_ID_FIELD_VALID] & 2) && id[ATA_ID_EIDE_DMA_TIME]) cycleTime = max_t(int, id[ATA_ID_EIDE_DMA_TIME], cycleTime); |
90f72eca3
|
652 |
|
1da177e4c
|
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 |
/* OHare limits according to some old Apple sources */ if ((intf_type == controller_ohare) && (cycleTime < 150)) cycleTime = 150; /* Get the proper timing array for this controller */ switch(intf_type) { case controller_sh_ata6: case controller_un_ata6: case controller_k2_ata6: break; case controller_kl_ata4: tm = mdma_timings_66; break; case controller_kl_ata3: tm = mdma_timings_33k; break; default: tm = mdma_timings_33; break; } if (tm != NULL) { /* Lookup matching access & recovery times */ i = -1; for (;;) { if (tm[i+1].cycleTime < cycleTime) break; i++; } |
1da177e4c
|
680 681 682 683 684 685 686 687 688 689 690 691 692 693 |
cycleTime = tm[i].cycleTime; accessTime = tm[i].accessTime; recTime = tm[i].recoveryTime; #ifdef IDE_PMAC_DEBUG printk(KERN_ERR "%s: MDMA, cycleTime: %d, accessTime: %d, recTime: %d ", drive->name, cycleTime, accessTime, recTime); #endif } switch(intf_type) { case controller_sh_ata6: { /* 133Mhz cell */ u32 tr = kauai_lookup_timing(shasta_mdma_timings, cycleTime); |
1da177e4c
|
694 695 696 697 698 699 700 |
*timings = ((*timings) & ~TR_133_PIOREG_MDMA_MASK) | tr; *timings2 = (*timings2) & ~TR_133_UDMAREG_UDMA_EN; } case controller_un_ata6: case controller_k2_ata6: { /* 100Mhz cell */ u32 tr = kauai_lookup_timing(kauai_mdma_timings, cycleTime); |
1da177e4c
|
701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 |
*timings = ((*timings) & ~TR_100_PIOREG_MDMA_MASK) | tr; *timings2 = (*timings2) & ~TR_100_UDMAREG_UDMA_EN; } break; case controller_kl_ata4: /* 66Mhz cell */ accessTicks = SYSCLK_TICKS_66(accessTime); accessTicks = min(accessTicks, 0x1fU); accessTicks = max(accessTicks, 0x1U); recTicks = SYSCLK_TICKS_66(recTime); recTicks = min(recTicks, 0x1fU); recTicks = max(recTicks, 0x3U); /* Clear out mdma bits and disable udma */ *timings = ((*timings) & ~(TR_66_MDMA_MASK | TR_66_UDMA_MASK)) | (accessTicks << TR_66_MDMA_ACCESS_SHIFT) | (recTicks << TR_66_MDMA_RECOVERY_SHIFT); break; case controller_kl_ata3: /* 33Mhz cell on KeyLargo */ accessTicks = SYSCLK_TICKS(accessTime); accessTicks = max(accessTicks, 1U); accessTicks = min(accessTicks, 0x1fU); accessTime = accessTicks * IDE_SYSCLK_NS; recTicks = SYSCLK_TICKS(recTime); recTicks = max(recTicks, 1U); recTicks = min(recTicks, 0x1fU); *timings = ((*timings) & ~TR_33_MDMA_MASK) | (accessTicks << TR_33_MDMA_ACCESS_SHIFT) | (recTicks << TR_33_MDMA_RECOVERY_SHIFT); break; default: { /* 33Mhz cell on others */ int halfTick = 0; int origAccessTime = accessTime; int origRecTime = recTime; accessTicks = SYSCLK_TICKS(accessTime); accessTicks = max(accessTicks, 1U); accessTicks = min(accessTicks, 0x1fU); accessTime = accessTicks * IDE_SYSCLK_NS; recTicks = SYSCLK_TICKS(recTime); recTicks = max(recTicks, 2U) - 1; recTicks = min(recTicks, 0x1fU); recTime = (recTicks + 1) * IDE_SYSCLK_NS; if ((accessTicks > 1) && ((accessTime - IDE_SYSCLK_NS/2) >= origAccessTime) && ((recTime - IDE_SYSCLK_NS/2) >= origRecTime)) { halfTick = 1; accessTicks--; } *timings = ((*timings) & ~TR_33_MDMA_MASK) | (accessTicks << TR_33_MDMA_ACCESS_SHIFT) | (recTicks << TR_33_MDMA_RECOVERY_SHIFT); if (halfTick) *timings |= TR_33_MDMA_HALFTICK; } } #ifdef IDE_PMAC_DEBUG printk(KERN_ERR "%s: Set MDMA timing for mode %d, reg: 0x%08x ", drive->name, speed & 0xf, *timings); #endif |
1da177e4c
|
763 |
} |
1da177e4c
|
764 |
|
8776168ca
|
765 |
static void pmac_ide_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4c
|
766 |
{ |
7b8797acd
|
767 768 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
1da177e4c
|
769 |
int ret = 0; |
085798b12
|
770 |
u32 *timings, *timings2, tl[2]; |
123995b97
|
771 |
u8 unit = drive->dn & 1; |
8776168ca
|
772 |
const u8 speed = drive->dma_mode; |
1da177e4c
|
773 |
|
1da177e4c
|
774 775 |
timings = &pmif->timings[unit]; timings2 = &pmif->timings[unit+2]; |
085798b12
|
776 777 778 779 |
/* Copy timings to local image */ tl[0] = *timings; tl[1] = *timings2; |
4db90a145
|
780 781 782 783 784 785 786 787 788 789 790 791 |
if (speed >= XFER_UDMA_0) { if (pmif->kind == controller_kl_ata4) ret = set_timings_udma_ata4(&tl[0], speed); else if (pmif->kind == controller_un_ata6 || pmif->kind == controller_k2_ata6) ret = set_timings_udma_ata6(&tl[0], &tl[1], speed); else if (pmif->kind == controller_sh_ata6) ret = set_timings_udma_shasta(&tl[0], &tl[1], speed); else ret = -1; } else set_timings_mdma(drive, pmif->kind, &tl[0], &tl[1], speed); |
538465747
|
792 |
|
1da177e4c
|
793 |
if (ret) |
88b2b32ba
|
794 |
return; |
085798b12
|
795 796 797 798 |
/* Apply timings to controller */ *timings = tl[0]; *timings2 = tl[1]; |
1da177e4c
|
799 |
pmac_ide_do_update_timings(drive); |
1da177e4c
|
800 801 802 803 804 805 |
} /* * Blast some well known "safe" values to the timing registers at init or * wakeup from sleep time, before we do real calculation */ |
aacaf9bd9
|
806 |
static void |
1da177e4c
|
807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 |
sanitize_timings(pmac_ide_hwif_t *pmif) { unsigned int value, value2 = 0; switch(pmif->kind) { case controller_sh_ata6: value = 0x0a820c97; value2 = 0x00033031; break; case controller_un_ata6: case controller_k2_ata6: value = 0x08618a92; value2 = 0x00002921; break; case controller_kl_ata4: value = 0x0008438c; break; case controller_kl_ata3: value = 0x00084526; break; case controller_heathrow: case controller_ohare: default: value = 0x00074526; break; } pmif->timings[0] = pmif->timings[1] = value; pmif->timings[2] = pmif->timings[3] = value2; } |
d58b0c39e
|
836 837 838 839 |
static int on_media_bay(pmac_ide_hwif_t *pmif) { return pmif->mdev && pmif->mdev->media_bay != NULL; } |
1da177e4c
|
840 841 842 |
/* Suspend call back, should be called after the child devices * have actually been suspended */ |
7b8797acd
|
843 |
static int pmac_ide_do_suspend(pmac_ide_hwif_t *pmif) |
1da177e4c
|
844 |
{ |
1da177e4c
|
845 846 847 848 |
/* We clear the timings */ pmif->timings[0] = 0; pmif->timings[1] = 0; |
616299afc
|
849 |
disable_irq(pmif->irq); |
1da177e4c
|
850 |
/* The media bay will handle itself just fine */ |
d58b0c39e
|
851 |
if (on_media_bay(pmif)) |
1da177e4c
|
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 |
return 0; /* Kauai has bus control FCRs directly here */ if (pmif->kauai_fcr) { u32 fcr = readl(pmif->kauai_fcr); fcr &= ~(KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE); writel(fcr, pmif->kauai_fcr); } /* Disable the bus on older machines and the cell on kauai */ ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, pmif->node, pmif->aapl_bus_id, 0); return 0; } /* Resume call back, should be called before the child devices * are resumed */ |
7b8797acd
|
871 |
static int pmac_ide_do_resume(pmac_ide_hwif_t *pmif) |
1da177e4c
|
872 |
{ |
1da177e4c
|
873 |
/* Hard reset & re-enable controller (do we really need to reset ? -BenH) */ |
d58b0c39e
|
874 |
if (!on_media_bay(pmif)) { |
1da177e4c
|
875 876 877 878 |
ppc_md.feature_call(PMAC_FTR_IDE_RESET, pmif->node, pmif->aapl_bus_id, 1); ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, pmif->node, pmif->aapl_bus_id, 1); msleep(10); ppc_md.feature_call(PMAC_FTR_IDE_RESET, pmif->node, pmif->aapl_bus_id, 0); |
1da177e4c
|
879 880 881 882 883 884 885 |
/* Kauai has it different */ if (pmif->kauai_fcr) { u32 fcr = readl(pmif->kauai_fcr); fcr |= KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE; writel(fcr, pmif->kauai_fcr); } |
616299afc
|
886 887 |
msleep(jiffies_to_msecs(IDE_WAKEUP_DELAY)); |
1da177e4c
|
888 889 890 891 |
} /* Sanitize drive timings */ sanitize_timings(pmif); |
616299afc
|
892 |
enable_irq(pmif->irq); |
1da177e4c
|
893 894 |
return 0; } |
07a6c66da
|
895 896 |
static u8 pmac_ide_cable_detect(ide_hwif_t *hwif) { |
7b8797acd
|
897 898 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
07a6c66da
|
899 900 |
struct device_node *np = pmif->node; const char *cable = of_get_property(np, "cable-type", NULL); |
a9d5a97fa
|
901 902 |
struct device_node *root = of_find_node_by_path("/"); const char *model = of_get_property(root, "model", NULL); |
07a6c66da
|
903 904 |
/* Get cable type from device-tree. */ |
a9d5a97fa
|
905 906 907 908 909 910 911 912 |
if (cable && !strncmp(cable, "80-", 3)) { /* Some drives fail to detect 80c cable in PowerBook */ /* These machine use proprietary short IDE cable anyway */ if (!strncmp(model, "PowerBook", 9)) return ATA_CBL_PATA40_SHORT; else return ATA_CBL_PATA80; } |
07a6c66da
|
913 914 915 916 917 918 919 920 921 922 923 924 |
/* * G5's seem to have incorrect cable type in device-tree. * Let's assume they have a 80 conductor cable, this seem * to be always the case unless the user mucked around. */ if (of_device_is_compatible(np, "K2-UATA") || of_device_is_compatible(np, "shasta-ata")) return ATA_CBL_PATA80; return ATA_CBL_PATA40; } |
07eb106f3
|
925 926 927 928 929 |
static void pmac_ide_init_dev(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
d58b0c39e
|
930 931 |
if (on_media_bay(pmif)) { if (check_media_bay(pmif->mdev->media_bay) == MB_CD) { |
97100fc81
|
932 |
drive->dev_flags &= ~IDE_DFLAG_NOPROBE; |
07eb106f3
|
933 934 |
return; } |
97100fc81
|
935 |
drive->dev_flags |= IDE_DFLAG_NOPROBE; |
07eb106f3
|
936 937 |
} } |
374e042c3
|
938 939 940 941 |
static const struct ide_tp_ops pmac_tp_ops = { .exec_command = pmac_exec_command, .read_status = ide_read_status, .read_altstatus = ide_read_altstatus, |
ecf3a31d2
|
942 |
.write_devctl = pmac_write_devctl, |
374e042c3
|
943 |
|
abb596b25
|
944 |
.dev_select = pmac_dev_select, |
374e042c3
|
945 946 947 948 949 950 |
.tf_load = ide_tf_load, .tf_read = ide_tf_read, .input_data = ide_input_data, .output_data = ide_output_data, }; |
abb596b25
|
951 952 953 954 955 956 957 958 959 960 961 962 |
static const struct ide_tp_ops pmac_ata6_tp_ops = { .exec_command = pmac_exec_command, .read_status = ide_read_status, .read_altstatus = ide_read_altstatus, .write_devctl = pmac_write_devctl, .dev_select = pmac_kauai_dev_select, .tf_load = ide_tf_load, .tf_read = ide_tf_read, .input_data = ide_input_data, .output_data = ide_output_data, |
07a6c66da
|
963 964 965 |
}; static const struct ide_port_ops pmac_ide_ata4_port_ops = { |
07eb106f3
|
966 |
.init_dev = pmac_ide_init_dev, |
07a6c66da
|
967 968 |
.set_pio_mode = pmac_ide_set_pio_mode, .set_dma_mode = pmac_ide_set_dma_mode, |
07a6c66da
|
969 |
.cable_detect = pmac_ide_cable_detect, |
ac95beedf
|
970 971 972 |
}; static const struct ide_port_ops pmac_ide_port_ops = { |
07eb106f3
|
973 |
.init_dev = pmac_ide_init_dev, |
ac95beedf
|
974 975 |
.set_pio_mode = pmac_ide_set_pio_mode, .set_dma_mode = pmac_ide_set_dma_mode, |
ac95beedf
|
976 |
}; |
f37afdaca
|
977 |
static const struct ide_dma_ops pmac_dma_ops; |
5e37bdc08
|
978 |
|
c413b9b94
|
979 |
static const struct ide_port_info pmac_port_info = { |
b36ba5321
|
980 |
.name = DRV_NAME, |
0d0719229
|
981 |
.init_dma = pmac_ide_init_dma, |
c413b9b94
|
982 |
.chipset = ide_pmac, |
374e042c3
|
983 984 |
.tp_ops = &pmac_tp_ops, .port_ops = &pmac_ide_port_ops, |
5e37bdc08
|
985 |
.dma_ops = &pmac_dma_ops, |
c413b9b94
|
986 |
.host_flags = IDE_HFLAG_SET_PIO_MODE_KEEP_DMA | |
c413b9b94
|
987 |
IDE_HFLAG_POST_SET_MODE | |
c5dd43ec6
|
988 |
IDE_HFLAG_MMIO | |
c413b9b94
|
989 990 991 992 |
IDE_HFLAG_UNMASK_IRQS, .pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, }; |
1da177e4c
|
993 994 |
/* * Setup, register & probe an IDE channel driven by this driver, this is |
5b16464ac
|
995 |
* called by one of the 2 probe functions (macio or PCI). |
1da177e4c
|
996 |
*/ |
9f36d3143
|
997 998 |
static int __devinit pmac_ide_setup_device(pmac_ide_hwif_t *pmif, struct ide_hw *hw) |
1da177e4c
|
999 1000 |
{ struct device_node *np = pmif->node; |
018a3d1db
|
1001 |
const int *bidp; |
48c3c1072
|
1002 |
struct ide_host *host; |
b36ba5321
|
1003 |
ide_hwif_t *hwif; |
9f36d3143
|
1004 |
struct ide_hw *hws[] = { hw }; |
c413b9b94
|
1005 |
struct ide_port_info d = pmac_port_info; |
6f904d015
|
1006 |
int rc; |
1da177e4c
|
1007 |
|
1da177e4c
|
1008 |
pmif->broken_dma = pmif->broken_dma_warn = 0; |
c413b9b94
|
1009 |
if (of_device_is_compatible(np, "shasta-ata")) { |
1da177e4c
|
1010 |
pmif->kind = controller_sh_ata6; |
abb596b25
|
1011 1012 |
d.tp_ops = &pmac_ata6_tp_ops; d.port_ops = &pmac_ide_ata4_port_ops; |
c413b9b94
|
1013 1014 |
d.udma_mask = ATA_UDMA6; } else if (of_device_is_compatible(np, "kauai-ata")) { |
1da177e4c
|
1015 |
pmif->kind = controller_un_ata6; |
abb596b25
|
1016 1017 |
d.tp_ops = &pmac_ata6_tp_ops; d.port_ops = &pmac_ide_ata4_port_ops; |
c413b9b94
|
1018 1019 |
d.udma_mask = ATA_UDMA5; } else if (of_device_is_compatible(np, "K2-UATA")) { |
1da177e4c
|
1020 |
pmif->kind = controller_k2_ata6; |
abb596b25
|
1021 1022 |
d.tp_ops = &pmac_ata6_tp_ops; d.port_ops = &pmac_ide_ata4_port_ops; |
c413b9b94
|
1023 1024 1025 |
d.udma_mask = ATA_UDMA5; } else if (of_device_is_compatible(np, "keylargo-ata")) { if (strcmp(np->name, "ata-4") == 0) { |
1da177e4c
|
1026 |
pmif->kind = controller_kl_ata4; |
07a6c66da
|
1027 |
d.port_ops = &pmac_ide_ata4_port_ops; |
c413b9b94
|
1028 1029 |
d.udma_mask = ATA_UDMA4; } else |
1da177e4c
|
1030 |
pmif->kind = controller_kl_ata3; |
c413b9b94
|
1031 |
} else if (of_device_is_compatible(np, "heathrow-ata")) { |
1da177e4c
|
1032 |
pmif->kind = controller_heathrow; |
c413b9b94
|
1033 |
} else { |
1da177e4c
|
1034 1035 1036 |
pmif->kind = controller_ohare; pmif->broken_dma = 1; } |
40cd3a456
|
1037 |
bidp = of_get_property(np, "AAPL,bus-id", NULL); |
1da177e4c
|
1038 |
pmif->aapl_bus_id = bidp ? *bidp : 0; |
1da177e4c
|
1039 1040 1041 1042 1043 |
/* On Kauai-type controllers, we make sure the FCR is correct */ if (pmif->kauai_fcr) writel(KAUAI_FCR_UATA_MAGIC | KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE, pmif->kauai_fcr); |
1da177e4c
|
1044 1045 1046 |
/* Make sure we have sane timings */ sanitize_timings(pmif); |
d58b0c39e
|
1047 1048 1049 |
/* If we are on a media bay, wait for it to settle and lock it */ if (pmif->mdev) lock_media_bay(pmif->mdev->media_bay); |
dca398305
|
1050 |
host = ide_host_alloc(&d, hws, 1); |
d58b0c39e
|
1051 1052 1053 1054 1055 |
if (host == NULL) { rc = -ENOMEM; goto bail; } hwif = pmif->hwif = host->ports[0]; |
9842727da
|
1056 |
|
d58b0c39e
|
1057 1058 |
if (on_media_bay(pmif)) { /* Fixup bus ID for media bay */ |
1da177e4c
|
1059 1060 1061 1062 1063 1064 1065 1066 |
if (!bidp) pmif->aapl_bus_id = 1; } else if (pmif->kind == controller_ohare) { /* The code below is having trouble on some ohare machines * (timing related ?). Until I can put my hand on one of these * units, I keep the old way */ ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, np, 0, 1); |
d58b0c39e
|
1067 |
} else { |
1da177e4c
|
1068 1069 1070 1071 1072 1073 1074 |
/* This is necessary to enable IDE when net-booting */ ppc_md.feature_call(PMAC_FTR_IDE_RESET, np, pmif->aapl_bus_id, 1); ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, np, pmif->aapl_bus_id, 1); msleep(10); ppc_md.feature_call(PMAC_FTR_IDE_RESET, np, pmif->aapl_bus_id, 0); msleep(jiffies_to_msecs(IDE_WAKEUP_DELAY)); } |
b36ba5321
|
1075 |
printk(KERN_INFO DRV_NAME ": Found Apple %s controller (%s), " |
d58b0c39e
|
1076 1077 1078 1079 |
"bus ID %d%s, irq %d ", model_name[pmif->kind], pmif->mdev ? "macio" : "PCI", pmif->aapl_bus_id, on_media_bay(pmif) ? " (mediabay)" : "", hw->irq); |
b36ba5321
|
1080 |
|
9842727da
|
1081 |
rc = ide_host_register(host, &d, hws); |
d58b0c39e
|
1082 1083 |
if (rc) pmif->hwif = NULL; |
5cbf79cdb
|
1084 |
|
d58b0c39e
|
1085 1086 1087 1088 1089 1090 1091 |
if (pmif->mdev) unlock_media_bay(pmif->mdev->media_bay); bail: if (rc && host) ide_host_free(host); return rc; |
1da177e4c
|
1092 |
} |
9f36d3143
|
1093 |
static void __devinit pmac_ide_init_ports(struct ide_hw *hw, unsigned long base) |
5c58666fa
|
1094 1095 1096 1097 |
{ int i; for (i = 0; i < 8; ++i) |
4c3032d8a
|
1098 1099 1100 |
hw->io_ports_array[i] = base + i * 0x10; hw->io_ports.ctl_addr = base + 0x160; |
5c58666fa
|
1101 |
} |
1da177e4c
|
1102 1103 1104 1105 |
/* * Attach to a macio probed interface */ static int __devinit |
5e6557722
|
1106 |
pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match) |
1da177e4c
|
1107 1108 1109 |
{ void __iomem *base; unsigned long regbase; |
1da177e4c
|
1110 |
pmac_ide_hwif_t *pmif; |
939b0f1d3
|
1111 |
int irq, rc; |
9f36d3143
|
1112 |
struct ide_hw hw; |
1da177e4c
|
1113 |
|
5297a3e52
|
1114 1115 1116 |
pmif = kzalloc(sizeof(*pmif), GFP_KERNEL); if (pmif == NULL) return -ENOMEM; |
cc5d0189b
|
1117 |
if (macio_resource_count(mdev) == 0) { |
939b0f1d3
|
1118 1119 |
printk(KERN_WARNING "ide-pmac: no address for %s ", |
61c7a080a
|
1120 |
mdev->ofdev.dev.of_node->full_name); |
5297a3e52
|
1121 1122 |
rc = -ENXIO; goto out_free_pmif; |
1da177e4c
|
1123 1124 1125 1126 |
} /* Request memory resource for IO ports */ if (macio_request_resource(mdev, 0, "ide-pmac (ports)")) { |
939b0f1d3
|
1127 |
printk(KERN_ERR "ide-pmac: can't request MMIO resource for " |
61c7a080a
|
1128 1129 |
"%s! ", mdev->ofdev.dev.of_node->full_name); |
5297a3e52
|
1130 1131 |
rc = -EBUSY; goto out_free_pmif; |
1da177e4c
|
1132 1133 1134 1135 1136 1137 1138 1139 |
} /* XXX This is bogus. Should be fixed in the registry by checking * the kind of host interrupt controller, a bit like gatwick * fixes in irq.c. That works well enough for the single case * where that happens though... */ if (macio_irq_count(mdev) == 0) { |
939b0f1d3
|
1140 |
printk(KERN_WARNING "ide-pmac: no intrs for device %s, using " |
61c7a080a
|
1141 1142 |
"13 ", mdev->ofdev.dev.of_node->full_name); |
69917c26c
|
1143 |
irq = irq_create_mapping(NULL, 13); |
1da177e4c
|
1144 1145 1146 1147 1148 |
} else irq = macio_irq(mdev, 0); base = ioremap(macio_resource_start(mdev, 0), 0x400); regbase = (unsigned long) base; |
1da177e4c
|
1149 |
pmif->mdev = mdev; |
61c7a080a
|
1150 |
pmif->node = mdev->ofdev.dev.of_node; |
1da177e4c
|
1151 1152 1153 |
pmif->regbase = regbase; pmif->irq = irq; pmif->kauai_fcr = NULL; |
538465747
|
1154 |
|
1da177e4c
|
1155 1156 |
if (macio_resource_count(mdev) >= 2) { if (macio_request_resource(mdev, 1, "ide-pmac (dma)")) |
939b0f1d3
|
1157 1158 1159 |
printk(KERN_WARNING "ide-pmac: can't request DMA " "resource for %s! ", |
61c7a080a
|
1160 |
mdev->ofdev.dev.of_node->full_name); |
1da177e4c
|
1161 1162 1163 1164 |
else pmif->dma_regs = ioremap(macio_resource_start(mdev, 1), 0x1000); } else pmif->dma_regs = NULL; |
538465747
|
1165 |
|
7b8797acd
|
1166 |
dev_set_drvdata(&mdev->ofdev.dev, pmif); |
1da177e4c
|
1167 |
|
57c802e84
|
1168 |
memset(&hw, 0, sizeof(hw)); |
5c58666fa
|
1169 |
pmac_ide_init_ports(&hw, pmif->regbase); |
57c802e84
|
1170 |
hw.irq = irq; |
c56c5648a
|
1171 1172 |
hw.dev = &mdev->bus->pdev->dev; hw.parent = &mdev->ofdev.dev; |
57c802e84
|
1173 |
|
b36ba5321
|
1174 |
rc = pmac_ide_setup_device(pmif, &hw); |
1da177e4c
|
1175 1176 1177 1178 |
if (rc != 0) { /* The inteface is released to the common IDE layer */ dev_set_drvdata(&mdev->ofdev.dev, NULL); iounmap(base); |
ed908fa1d
|
1179 |
if (pmif->dma_regs) { |
1da177e4c
|
1180 |
iounmap(pmif->dma_regs); |
ed908fa1d
|
1181 1182 |
macio_release_resource(mdev, 1); } |
1da177e4c
|
1183 |
macio_release_resource(mdev, 0); |
5297a3e52
|
1184 |
kfree(pmif); |
1da177e4c
|
1185 1186 1187 |
} return rc; |
5297a3e52
|
1188 1189 1190 1191 |
out_free_pmif: kfree(pmif); return rc; |
1da177e4c
|
1192 1193 1194 |
} static int |
8b4b8a24e
|
1195 |
pmac_ide_macio_suspend(struct macio_dev *mdev, pm_message_t mesg) |
1da177e4c
|
1196 |
{ |
7b8797acd
|
1197 1198 1199 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev); int rc = 0; |
1da177e4c
|
1200 |
|
8b4b8a24e
|
1201 |
if (mesg.event != mdev->ofdev.dev.power.power_state.event |
3a2d5b700
|
1202 |
&& (mesg.event & PM_EVENT_SLEEP)) { |
7b8797acd
|
1203 |
rc = pmac_ide_do_suspend(pmif); |
1da177e4c
|
1204 |
if (rc == 0) |
8b4b8a24e
|
1205 |
mdev->ofdev.dev.power.power_state = mesg; |
1da177e4c
|
1206 1207 1208 1209 1210 1211 1212 1213 |
} return rc; } static int pmac_ide_macio_resume(struct macio_dev *mdev) { |
7b8797acd
|
1214 1215 1216 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev); int rc = 0; |
ca078bae8
|
1217 |
if (mdev->ofdev.dev.power.power_state.event != PM_EVENT_ON) { |
7b8797acd
|
1218 |
rc = pmac_ide_do_resume(pmif); |
1da177e4c
|
1219 |
if (rc == 0) |
829ca9a30
|
1220 |
mdev->ofdev.dev.power.power_state = PMSG_ON; |
1da177e4c
|
1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 |
} return rc; } /* * Attach to a PCI probed interface */ static int __devinit pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id) { |
1da177e4c
|
1232 1233 1234 1235 |
struct device_node *np; pmac_ide_hwif_t *pmif; void __iomem *base; unsigned long rbase, rlen; |
939b0f1d3
|
1236 |
int rc; |
9f36d3143
|
1237 |
struct ide_hw hw; |
1da177e4c
|
1238 1239 1240 1241 1242 1243 1244 |
np = pci_device_to_OF_node(pdev); if (np == NULL) { printk(KERN_ERR "ide-pmac: cannot find MacIO node for Kauai ATA interface "); return -ENODEV; } |
5297a3e52
|
1245 1246 1247 1248 |
pmif = kzalloc(sizeof(*pmif), GFP_KERNEL); if (pmif == NULL) return -ENOMEM; |
1da177e4c
|
1249 |
if (pci_enable_device(pdev)) { |
939b0f1d3
|
1250 1251 1252 |
printk(KERN_WARNING "ide-pmac: Can't enable PCI device for " "%s ", np->full_name); |
5297a3e52
|
1253 1254 |
rc = -ENXIO; goto out_free_pmif; |
1da177e4c
|
1255 1256 1257 1258 |
} pci_set_master(pdev); if (pci_request_regions(pdev, "Kauai ATA")) { |
939b0f1d3
|
1259 1260 1261 |
printk(KERN_ERR "ide-pmac: Cannot obtain PCI resources for " "%s ", np->full_name); |
5297a3e52
|
1262 1263 |
rc = -ENXIO; goto out_free_pmif; |
1da177e4c
|
1264 |
} |
1da177e4c
|
1265 1266 1267 1268 1269 1270 1271 1272 |
pmif->mdev = NULL; pmif->node = np; rbase = pci_resource_start(pdev, 0); rlen = pci_resource_len(pdev, 0); base = ioremap(rbase, rlen); pmif->regbase = (unsigned long) base + 0x2000; |
1da177e4c
|
1273 |
pmif->dma_regs = base + 0x1000; |
1da177e4c
|
1274 1275 |
pmif->kauai_fcr = base; pmif->irq = pdev->irq; |
7b8797acd
|
1276 |
pci_set_drvdata(pdev, pmif); |
1da177e4c
|
1277 |
|
57c802e84
|
1278 |
memset(&hw, 0, sizeof(hw)); |
5c58666fa
|
1279 |
pmac_ide_init_ports(&hw, pmif->regbase); |
57c802e84
|
1280 1281 |
hw.irq = pdev->irq; hw.dev = &pdev->dev; |
b36ba5321
|
1282 |
rc = pmac_ide_setup_device(pmif, &hw); |
1da177e4c
|
1283 1284 1285 1286 |
if (rc != 0) { /* The inteface is released to the common IDE layer */ pci_set_drvdata(pdev, NULL); iounmap(base); |
1da177e4c
|
1287 |
pci_release_regions(pdev); |
5297a3e52
|
1288 |
kfree(pmif); |
1da177e4c
|
1289 1290 1291 |
} return rc; |
5297a3e52
|
1292 1293 1294 1295 |
out_free_pmif: kfree(pmif); return rc; |
1da177e4c
|
1296 1297 1298 |
} static int |
8b4b8a24e
|
1299 |
pmac_ide_pci_suspend(struct pci_dev *pdev, pm_message_t mesg) |
1da177e4c
|
1300 |
{ |
7b8797acd
|
1301 1302 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)pci_get_drvdata(pdev); int rc = 0; |
8b4b8a24e
|
1303 |
if (mesg.event != pdev->dev.power.power_state.event |
3a2d5b700
|
1304 |
&& (mesg.event & PM_EVENT_SLEEP)) { |
7b8797acd
|
1305 |
rc = pmac_ide_do_suspend(pmif); |
1da177e4c
|
1306 |
if (rc == 0) |
8b4b8a24e
|
1307 |
pdev->dev.power.power_state = mesg; |
1da177e4c
|
1308 1309 1310 1311 1312 1313 1314 1315 |
} return rc; } static int pmac_ide_pci_resume(struct pci_dev *pdev) { |
7b8797acd
|
1316 1317 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)pci_get_drvdata(pdev); int rc = 0; |
ca078bae8
|
1318 |
if (pdev->dev.power.power_state.event != PM_EVENT_ON) { |
7b8797acd
|
1319 |
rc = pmac_ide_do_resume(pmif); |
1da177e4c
|
1320 |
if (rc == 0) |
829ca9a30
|
1321 |
pdev->dev.power.power_state = PMSG_ON; |
1da177e4c
|
1322 1323 1324 1325 |
} return rc; } |
d58b0c39e
|
1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 |
#ifdef CONFIG_PMAC_MEDIABAY static void pmac_ide_macio_mb_event(struct macio_dev* mdev, int mb_state) { pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(&mdev->ofdev.dev); switch(mb_state) { case MB_CD: if (!pmif->hwif->present) ide_port_scan(pmif->hwif); break; default: if (pmif->hwif->present) ide_port_unregister_devices(pmif->hwif); } } #endif /* CONFIG_PMAC_MEDIABAY */ |
5e6557722
|
1343 |
static struct of_device_id pmac_ide_macio_match[] = |
1da177e4c
|
1344 1345 1346 |
{ { .name = "IDE", |
1da177e4c
|
1347 1348 1349 |
}, { .name = "ATA", |
1da177e4c
|
1350 1351 |
}, { |
1da177e4c
|
1352 |
.type = "ide", |
1da177e4c
|
1353 1354 |
}, { |
1da177e4c
|
1355 |
.type = "ata", |
1da177e4c
|
1356 1357 1358 1359 1360 1361 |
}, {}, }; static struct macio_driver pmac_ide_macio_driver = { |
c2cdf6aba
|
1362 1363 1364 1365 1366 |
.driver = { .name = "ide-pmac", .owner = THIS_MODULE, .of_match_table = pmac_ide_macio_match, }, |
1da177e4c
|
1367 1368 1369 |
.probe = pmac_ide_macio_attach, .suspend = pmac_ide_macio_suspend, .resume = pmac_ide_macio_resume, |
d58b0c39e
|
1370 1371 1372 |
#ifdef CONFIG_PMAC_MEDIABAY .mediabay_event = pmac_ide_macio_mb_event, #endif |
1da177e4c
|
1373 |
}; |
9cbcc5e3c
|
1374 1375 1376 1377 1378 1379 |
static const struct pci_device_id pmac_ide_pci_match[] = { { PCI_VDEVICE(APPLE, PCI_DEVICE_ID_APPLE_UNI_N_ATA), 0 }, { PCI_VDEVICE(APPLE, PCI_DEVICE_ID_APPLE_IPID_ATA100), 0 }, { PCI_VDEVICE(APPLE, PCI_DEVICE_ID_APPLE_K2_ATA100), 0 }, { PCI_VDEVICE(APPLE, PCI_DEVICE_ID_APPLE_SH_ATA), 0 }, { PCI_VDEVICE(APPLE, PCI_DEVICE_ID_APPLE_IPID2_ATA), 0 }, |
71e4eda8c
|
1380 |
{}, |
1da177e4c
|
1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 |
}; static struct pci_driver pmac_ide_pci_driver = { .name = "ide-pmac", .id_table = pmac_ide_pci_match, .probe = pmac_ide_pci_attach, .suspend = pmac_ide_pci_suspend, .resume = pmac_ide_pci_resume, }; MODULE_DEVICE_TABLE(pci, pmac_ide_pci_match); |
9e5755bce
|
1391 |
int __init pmac_ide_probe(void) |
1da177e4c
|
1392 |
{ |
9e5755bce
|
1393 |
int error; |
e8222502e
|
1394 |
if (!machine_is(powermac)) |
9e5755bce
|
1395 |
return -ENODEV; |
1da177e4c
|
1396 1397 |
#ifdef CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST |
9e5755bce
|
1398 1399 1400 1401 1402 1403 1404 1405 |
error = pci_register_driver(&pmac_ide_pci_driver); if (error) goto out; error = macio_register_driver(&pmac_ide_macio_driver); if (error) { pci_unregister_driver(&pmac_ide_pci_driver); goto out; } |
1da177e4c
|
1406 |
#else |
9e5755bce
|
1407 1408 1409 1410 1411 1412 1413 1414 |
error = macio_register_driver(&pmac_ide_macio_driver); if (error) goto out; error = pci_register_driver(&pmac_ide_pci_driver); if (error) { macio_unregister_driver(&pmac_ide_macio_driver); goto out; } |
1beb6a7d6
|
1415 |
#endif |
9e5755bce
|
1416 1417 |
out: return error; |
1da177e4c
|
1418 |
} |
1da177e4c
|
1419 1420 1421 1422 |
/* * pmac_ide_build_dmatable builds the DBDMA command list * for a transfer and sets the DBDMA channel to point to it. */ |
229816941
|
1423 |
static int pmac_ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4c
|
1424 |
{ |
7b8797acd
|
1425 1426 1427 |
ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
1da177e4c
|
1428 |
struct dbdma_cmd *table; |
1da177e4c
|
1429 1430 |
volatile struct dbdma_regs __iomem *dma = pmif->dma_regs; struct scatterlist *sg; |
229816941
|
1431 1432 |
int wr = !!(cmd->tf_flags & IDE_TFLAG_WRITE); int i = cmd->sg_nents, count = 0; |
1da177e4c
|
1433 1434 1435 1436 1437 1438 1439 1440 |
/* DMA table is already aligned */ table = (struct dbdma_cmd *) pmif->dma_table_cpu; /* Make sure DMA controller is stopped (necessary ?) */ writel((RUN|PAUSE|FLUSH|WAKE|DEAD) << 16, &dma->control); while (readl(&dma->status) & RUN) udelay(1); |
1da177e4c
|
1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 |
/* Build DBDMA commands list */ sg = hwif->sg_table; while (i && sg_dma_len(sg)) { u32 cur_addr; u32 cur_len; cur_addr = sg_dma_address(sg); cur_len = sg_dma_len(sg); if (pmif->broken_dma && cur_addr & (L1_CACHE_BYTES - 1)) { if (pmif->broken_dma_warn == 0) { |
aca38a515
|
1452 |
printk(KERN_WARNING "%s: DMA on non aligned address, " |
1da177e4c
|
1453 1454 1455 1456 |
"switching to PIO on Ohare chipset ", drive->name); pmif->broken_dma_warn = 1; } |
11998b316
|
1457 |
return 0; |
1da177e4c
|
1458 1459 1460 1461 1462 1463 1464 1465 |
} while (cur_len) { unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; if (count++ >= MAX_DCMDS) { printk(KERN_WARNING "%s: DMA table too small ", drive->name); |
11998b316
|
1466 |
return 0; |
1da177e4c
|
1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 |
} st_le16(&table->command, wr? OUTPUT_MORE: INPUT_MORE); st_le16(&table->req_count, tc); st_le32(&table->phy_addr, cur_addr); table->cmd_dep = 0; table->xfer_status = 0; table->res_count = 0; cur_addr += tc; cur_len -= tc; ++table; } |
55c16a700
|
1478 |
sg = sg_next(sg); |
1da177e4c
|
1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 |
i--; } /* convert the last command to an input/output last command */ if (count) { st_le16(&table[-1].command, wr? OUTPUT_LAST: INPUT_LAST); /* add the stop command to the end of the list */ memset(table, 0, sizeof(struct dbdma_cmd)); st_le16(&table->command, DBDMA_STOP); mb(); writel(hwif->dmatable_dma, &dma->cmdptr); return 1; } printk(KERN_DEBUG "%s: empty DMA table? ", drive->name); |
f6fb786d6
|
1495 |
|
1da177e4c
|
1496 1497 |
return 0; /* revert to PIO for this request */ } |
1da177e4c
|
1498 |
/* |
1da177e4c
|
1499 1500 1501 |
* Prepare a DMA transfer. We build the DMA table, adjust the timings for * a read on KeyLargo ATA/66 and mark us as waiting for DMA completion */ |
229816941
|
1502 |
static int pmac_ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4c
|
1503 |
{ |
898ec223f
|
1504 |
ide_hwif_t *hwif = drive->hwif; |
7b8797acd
|
1505 1506 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
9055ba3ee
|
1507 |
u8 unit = drive->dn & 1, ata4 = (pmif->kind == controller_kl_ata4); |
229816941
|
1508 |
u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); |
1da177e4c
|
1509 |
|
11998b316
|
1510 |
if (pmac_ide_build_dmatable(drive, cmd) == 0) |
1da177e4c
|
1511 |
return 1; |
1da177e4c
|
1512 1513 1514 |
/* Apple adds 60ns to wrDataSetup on reads */ if (ata4 && (pmif->timings[unit] & TR_66_UDMA_EN)) { |
229816941
|
1515 |
writel(pmif->timings[unit] + (write ? 0 : 0x00800000UL), |
1da177e4c
|
1516 1517 1518 |
PMAC_IDE_REG(IDE_TIMING_CONFIG)); (void)readl(PMAC_IDE_REG(IDE_TIMING_CONFIG)); } |
1da177e4c
|
1519 1520 |
return 0; } |
1da177e4c
|
1521 1522 1523 1524 |
/* * Kick the DMA controller into life after the DMA command has been issued * to the drive. */ |
aacaf9bd9
|
1525 |
static void |
1da177e4c
|
1526 1527 |
pmac_ide_dma_start(ide_drive_t *drive) { |
7b8797acd
|
1528 1529 1530 |
ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
1da177e4c
|
1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 |
volatile struct dbdma_regs __iomem *dma; dma = pmif->dma_regs; writel((RUN << 16) | RUN, &dma->control); /* Make sure it gets to the controller right now */ (void)readl(&dma->control); } /* * After a DMA transfer, make sure the controller is stopped */ |
aacaf9bd9
|
1543 |
static int |
1da177e4c
|
1544 1545 |
pmac_ide_dma_end (ide_drive_t *drive) { |
7b8797acd
|
1546 1547 1548 |
ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
9055ba3ee
|
1549 |
volatile struct dbdma_regs __iomem *dma = pmif->dma_regs; |
1da177e4c
|
1550 |
u32 dstat; |
1da177e4c
|
1551 |
|
1da177e4c
|
1552 1553 |
dstat = readl(&dma->status); writel(((RUN|WAKE|DEAD) << 16), &dma->control); |
f5e0b5ecb
|
1554 |
|
1da177e4c
|
1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 |
/* verify good dma status. we don't check for ACTIVE beeing 0. We should... * in theory, but with ATAPI decices doing buffer underruns, that would * cause us to disable DMA, which isn't what we want */ return (dstat & (RUN|DEAD)) != RUN; } /* * Check out that the interrupt we got was for us. We can't always know this * for sure with those Apple interfaces (well, we could on the recent ones but * that's not implemented yet), on the other hand, we don't have shared interrupts * so it's not really a problem */ |
aacaf9bd9
|
1568 |
static int |
1da177e4c
|
1569 1570 |
pmac_ide_dma_test_irq (ide_drive_t *drive) { |
7b8797acd
|
1571 1572 1573 |
ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
9055ba3ee
|
1574 |
volatile struct dbdma_regs __iomem *dma = pmif->dma_regs; |
1da177e4c
|
1575 |
unsigned long status, timeout; |
1da177e4c
|
1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 |
/* We have to things to deal with here: * * - The dbdma won't stop if the command was started * but completed with an error without transferring all * datas. This happens when bad blocks are met during * a multi-block transfer. * * - The dbdma fifo hasn't yet finished flushing to * to system memory when the disk interrupt occurs. * */ /* If ACTIVE is cleared, the STOP command have passed and * transfer is complete. */ status = readl(&dma->status); if (!(status & ACTIVE)) return 1; |
1da177e4c
|
1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 |
/* If dbdma didn't execute the STOP command yet, the * active bit is still set. We consider that we aren't * sharing interrupts (which is hopefully the case with * those controllers) and so we just try to flush the * channel for pending data in the fifo */ udelay(1); writel((FLUSH << 16) | FLUSH, &dma->control); timeout = 0; for (;;) { udelay(1); status = readl(&dma->status); if ((status & FLUSH) == 0) break; if (++timeout > 100) { |
b1681c56f
|
1610 1611 1612 |
printk(KERN_WARNING "ide%d, ide_dma_test_irq timeout flushing channel ", hwif->index); |
1da177e4c
|
1613 1614 1615 1616 1617 |
break; } } return 1; } |
15ce926ad
|
1618 |
static void pmac_ide_dma_host_set(ide_drive_t *drive, int on) |
1da177e4c
|
1619 |
{ |
1da177e4c
|
1620 |
} |
841d2a9bf
|
1621 1622 |
static void pmac_ide_dma_lost_irq (ide_drive_t *drive) |
1da177e4c
|
1623 |
{ |
7b8797acd
|
1624 1625 1626 |
ide_hwif_t *hwif = drive->hwif; pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
9055ba3ee
|
1627 1628 |
volatile struct dbdma_regs __iomem *dma = pmif->dma_regs; unsigned long status = readl(&dma->status); |
1da177e4c
|
1629 |
|
1da177e4c
|
1630 1631 |
printk(KERN_ERR "ide-pmac lost interrupt, dma status: %lx ", status); |
1da177e4c
|
1632 |
} |
f37afdaca
|
1633 |
static const struct ide_dma_ops pmac_dma_ops = { |
5e37bdc08
|
1634 1635 |
.dma_host_set = pmac_ide_dma_host_set, .dma_setup = pmac_ide_dma_setup, |
5e37bdc08
|
1636 1637 1638 |
.dma_start = pmac_ide_dma_start, .dma_end = pmac_ide_dma_end, .dma_test_irq = pmac_ide_dma_test_irq, |
5e37bdc08
|
1639 1640 |
.dma_lost_irq = pmac_ide_dma_lost_irq, }; |
1da177e4c
|
1641 1642 1643 1644 |
/* * Allocate the data structures needed for using DMA with an interface * and fill the proper list of functions pointers */ |
0d0719229
|
1645 1646 |
static int __devinit pmac_ide_init_dma(ide_hwif_t *hwif, const struct ide_port_info *d) |
1da177e4c
|
1647 |
{ |
7b8797acd
|
1648 1649 |
pmac_ide_hwif_t *pmif = (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent); |
36501650e
|
1650 |
struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4c
|
1651 1652 1653 |
/* We won't need pci_dev if we switch to generic consistent * DMA routines ... */ |
0d0719229
|
1654 |
if (dev == NULL || pmif->dma_regs == 0) |
c413b9b94
|
1655 |
return -ENODEV; |
1da177e4c
|
1656 1657 1658 1659 1660 |
/* * Allocate space for the DBDMA commands. * The +2 is +1 for the stop command and +1 to allow for * aligning the start address to a multiple of 16 bytes. */ |
d5f840bf7
|
1661 |
pmif->dma_table_cpu = pci_alloc_consistent( |
36501650e
|
1662 |
dev, |
1da177e4c
|
1663 1664 1665 1666 1667 1668 |
(MAX_DCMDS + 2) * sizeof(struct dbdma_cmd), &hwif->dmatable_dma); if (pmif->dma_table_cpu == NULL) { printk(KERN_ERR "%s: unable to allocate DMA command list ", hwif->name); |
c413b9b94
|
1669 |
return -ENOMEM; |
1da177e4c
|
1670 |
} |
4f52a3299
|
1671 |
hwif->sg_max_nents = MAX_DCMDS; |
c413b9b94
|
1672 |
return 0; |
1da177e4c
|
1673 |
} |
ade2daf9c
|
1674 1675 |
module_init(pmac_ide_probe); |
de9facbff
|
1676 1677 |
MODULE_LICENSE("GPL"); |