diff options
Diffstat (limited to 'drivers/ata/pata_macio.c')
| -rw-r--r-- | drivers/ata/pata_macio.c | 1427 |
1 files changed, 1427 insertions, 0 deletions
diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c new file mode 100644 index 000000000000..4cc7bbd10ec2 --- /dev/null +++ b/drivers/ata/pata_macio.c @@ -0,0 +1,1427 @@ +/* + * Libata based driver for Apple "macio" family of PATA controllers + * + * Copyright 2008/2009 Benjamin Herrenschmidt, IBM Corp + * <benh@kernel.crashing.org> + * + * Some bits and pieces from drivers/ide/ppc/pmac.c + * + */ + +#undef DEBUG +#undef DEBUG_DMA + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/blkdev.h> +#include <linux/ata.h> +#include <linux/libata.h> +#include <linux/adb.h> +#include <linux/pmu.h> +#include <linux/scatterlist.h> +#include <linux/of.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_device.h> + +#include <asm/macio.h> +#include <asm/io.h> +#include <asm/dbdma.h> +#include <asm/pci-bridge.h> +#include <asm/machdep.h> +#include <asm/pmac_feature.h> +#include <asm/mediabay.h> + +#ifdef DEBUG_DMA +#define dev_dbgdma(dev, format, arg...) \ + dev_printk(KERN_DEBUG , dev , format , ## arg) +#else +#define dev_dbgdma(dev, format, arg...) \ + ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; }) +#endif + +#define DRV_NAME "pata_macio" +#define DRV_VERSION "0.9" + +/* Models of macio ATA controller */ +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* macio_ata_names[] = { + "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, that's just + * weird and I don't now why .. at this stage + */ +#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 and K2. It appears as a pci device + * (106b/0033) on uninorth or K2 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 2x32bits registers (one + * for PIO & MWDMA and one for UDMA, and a similar DBDMA channel. + * It has it's own local feature control register as well. + * + * After scratching my mind over the timing values, at least for PIO + * and MDMA, I think I've figured the format of the timing register, + * though I use pre-calculated tables for UDMA as usual... + */ +#define TR_100_PIO_ADDRSETUP_MASK 0xff000000 /* Size of field unknown */ +#define TR_100_PIO_ADDRSETUP_SHIFT 24 +#define TR_100_MDMA_MASK 0x00fff000 +#define TR_100_MDMA_RECOVERY_MASK 0x00fc0000 +#define TR_100_MDMA_RECOVERY_SHIFT 18 +#define TR_100_MDMA_ACCESS_MASK 0x0003f000 +#define TR_100_MDMA_ACCESS_SHIFT 12 +#define TR_100_PIO_MASK 0xff000fff +#define TR_100_PIO_RECOVERY_MASK 0x00000fc0 +#define TR_100_PIO_RECOVERY_SHIFT 6 +#define TR_100_PIO_ACCESS_MASK 0x0000003f +#define TR_100_PIO_ACCESS_SHIFT 0 + +#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_PIO_ADDRSETUP_MASK 0xe0000000 /* Address setup */ +#define TR_66_PIO_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 0xe00003ff +#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. Only present on newer cells + * (Keylargo and later afaik) so we don't use it. + */ +#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 + + +/* Allow up to 256 DBDMA commands per xfer */ +#define MAX_DCMDS 256 + +/* Don't let a DMA segment go all the way to 64K */ +#define MAX_DBDMA_SEG 0xff00 + + +/* + * 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_MS 1000 + +struct pata_macio_timing; + +struct pata_macio_priv { + int kind; + int aapl_bus_id; + int mediabay : 1; + struct device_node *node; + struct macio_dev *mdev; + struct pci_dev *pdev; + struct device *dev; + int irq; + u32 treg[2][2]; + void __iomem *tfregs; + void __iomem *kauai_fcr; + struct dbdma_cmd * dma_table_cpu; + dma_addr_t dma_table_dma; + struct ata_host *host; + const struct pata_macio_timing *timings; +}; + +/* Previous variants of this driver used to calculate timings + * for various variants of the chip and use tables for others. + * + * Not only was this confusing, but in addition, it isn't clear + * whether our calculation code was correct. It didn't entirely + * match the darwin code and whatever documentation I could find + * on these cells + * + * I decided to entirely rely on a table instead for this version + * of the driver. Also, because I don't really care about derated + * modes and really old HW other than making it work, I'm not going + * to calculate / snoop timing values for something else than the + * standard modes. + */ +struct pata_macio_timing { + int mode; + u32 reg1; /* Bits to set in first timing reg */ + u32 reg2; /* Bits to set in second timing reg */ +}; + +static const struct pata_macio_timing pata_macio_ohare_timings[] = { + { XFER_PIO_0, 0x00000526, 0, }, + { XFER_PIO_1, 0x00000085, 0, }, + { XFER_PIO_2, 0x00000025, 0, }, + { XFER_PIO_3, 0x00000025, 0, }, + { XFER_PIO_4, 0x00000025, 0, }, + { XFER_MW_DMA_0, 0x00074000, 0, }, + { XFER_MW_DMA_1, 0x00221000, 0, }, + { XFER_MW_DMA_2, 0x00211000, 0, }, + { -1, 0, 0 } +}; + +static const struct pata_macio_timing pata_macio_heathrow_timings[] = { + { XFER_PIO_0, 0x00000526, 0, }, + { XFER_PIO_1, 0x00000085, 0, }, + { XFER_PIO_2, 0x00000025, 0, }, + { XFER_PIO_3, 0x00000025, 0, }, + { XFER_PIO_4, 0x00000025, 0, }, + { XFER_MW_DMA_0, 0x00074000, 0, }, + { XFER_MW_DMA_1, 0x00221000, 0, }, + { XFER_MW_DMA_2, 0x00211000, 0, }, + { -1, 0, 0 } +}; + +static const struct pata_macio_timing pata_macio_kl33_timings[] = { + { XFER_PIO_0, 0x00000526, 0, }, + { XFER_PIO_1, 0x00000085, 0, }, + { XFER_PIO_2, 0x00000025, 0, }, + { XFER_PIO_3, 0x00000025, 0, }, + { XFER_PIO_4, 0x00000025, 0, }, + { XFER_MW_DMA_0, 0x00084000, 0, }, + { XFER_MW_DMA_1, 0x00021800, 0, }, + { XFER_MW_DMA_2, 0x00011800, 0, }, + { -1, 0, 0 } +}; + +static const struct pata_macio_timing pata_macio_kl66_timings[] = { + { XFER_PIO_0, 0x0000038c, 0, }, + { XFER_PIO_1, 0x0000020a, 0, }, + { XFER_PIO_2, 0x00000127, 0, }, + { XFER_PIO_3, 0x000000c6, 0, }, + { XFER_PIO_4, 0x00000065, 0, }, + { XFER_MW_DMA_0, 0x00084000, 0, }, + { XFER_MW_DMA_1, 0x00029800, 0, }, + { XFER_MW_DMA_2, 0x00019400, 0, }, + { XFER_UDMA_0, 0x19100000, 0, }, + { XFER_UDMA_1, 0x14d00000, 0, }, + { XFER_UDMA_2, 0x10900000, 0, }, + { XFER_UDMA_3, 0x0c700000, 0, }, + { XFER_UDMA_4, 0x0c500000, 0, }, + { -1, 0, 0 } +}; + +static const struct pata_macio_timing pata_macio_kauai_timings[] = { + { XFER_PIO_0, 0x08000a92, 0, }, + { XFER_PIO_1, 0x0800060f, 0, }, + { XFER_PIO_2, 0x0800038b, 0, }, + { XFER_PIO_3, 0x05000249, 0, }, + { XFER_PIO_4, 0x04000148, 0, }, + { XFER_MW_DMA_0, 0x00618000, 0, }, + { XFER_MW_DMA_1, 0x00209000, 0, }, + { XFER_MW_DMA_2, 0x00148000, 0, }, + { XFER_UDMA_0, 0, 0x000070c1, }, + { XFER_UDMA_1, 0, 0x00005d81, }, + { XFER_UDMA_2, 0, 0x00004a61, }, + { XFER_UDMA_3, 0, 0x00003a51, }, + { XFER_UDMA_4, 0, 0x00002a31, }, + { XFER_UDMA_5, 0, 0x00002921, }, + { -1, 0, 0 } +}; + +static const struct pata_macio_timing pata_macio_shasta_timings[] = { + { XFER_PIO_0, 0x0a000c97, 0, }, + { XFER_PIO_1, 0x07000712, 0, }, + { XFER_PIO_2, 0x040003cd, 0, }, + { XFER_PIO_3, 0x0500028b, 0, }, + { XFER_PIO_4, 0x0400010a, 0, }, + { XFER_MW_DMA_0, 0x00820800, 0, }, + { XFER_MW_DMA_1, 0x0028b000, 0, }, + { XFER_MW_DMA_2, 0x001ca000, 0, }, + { XFER_UDMA_0, 0, 0x00035901, }, + { XFER_UDMA_1, 0, 0x000348b1, }, + { XFER_UDMA_2, 0, 0x00033881, }, + { XFER_UDMA_3, 0, 0x00033861, }, + { XFER_UDMA_4, 0, 0x00033841, }, + { XFER_UDMA_5, 0, 0x00033031, }, + { XFER_UDMA_6, 0, 0x00033021, }, + { -1, 0, 0 } +}; + +static const struct pata_macio_timing *pata_macio_find_timing( + struct pata_macio_priv *priv, + int mode) +{ + int i; + + for (i = 0; priv->timings[i].mode > 0; i++) { + if (priv->timings[i].mode == mode) + return &priv->timings[i]; + } + return NULL; +} + + +static void pata_macio_apply_timings(struct ata_port *ap, unsigned int device) +{ + struct pata_macio_priv *priv = ap->private_data; + void __iomem *rbase = ap->ioaddr.cmd_addr; + + if (priv->kind == controller_sh_ata6 || + priv->kind == controller_un_ata6 || + priv->kind == controller_k2_ata6) { + writel(priv->treg[device][0], rbase + IDE_KAUAI_PIO_CONFIG); + writel(priv->treg[device][1], rbase + IDE_KAUAI_ULTRA_CONFIG); + } else + writel(priv->treg[device][0], rbase + IDE_TIMING_CONFIG); +} + +static void pata_macio_dev_select(struct ata_port *ap, unsigned int device) +{ + ata_sff_dev_select(ap, device); + + /* Apply timings */ + pata_macio_apply_timings(ap, device); +} + +static void pata_macio_set_timings(struct ata_port *ap, + struct ata_device *adev) +{ + struct pata_macio_priv *priv = ap->private_data; + const struct pata_macio_timing *t; + + dev_dbg(priv->dev, "Set timings: DEV=%d,PIO=0x%x (%s),DMA=0x%x (%s)\n", + adev->devno, + adev->pio_mode, + ata_mode_string(ata_xfer_mode2mask(adev->pio_mode)), + adev->dma_mode, + ata_mode_string(ata_xfer_mode2mask(adev->dma_mode))); + + /* First clear timings */ + priv->treg[adev->devno][0] = priv->treg[adev->devno][1] = 0; + + /* Now get the PIO timings */ + t = pata_macio_find_timing(priv, adev->pio_mode); + if (t == NULL) { + dev_warn(priv->dev, "Invalid PIO timing requested: 0x%x\n", + adev->pio_mode); + t = pata_macio_find_timing(priv, XFER_PIO_0); + } + BUG_ON(t == NULL); + + /* PIO timings only ever use the first treg */ + priv->treg[adev->devno][0] |= t->reg1; + + /* Now get DMA timings */ + t = pata_macio_find_timing(priv, adev->dma_mode); + if (t == NULL || (t->reg1 == 0 && t->reg2 == 0)) { + dev_dbg(priv->dev, "DMA timing not set yet, using MW_DMA_0\n"); + t = pata_macio_find_timing(priv, XFER_MW_DMA_0); + } + BUG_ON(t == NULL); + + /* DMA timings can use both tregs */ + priv->treg[adev->devno][0] |= t->reg1; + priv->treg[adev->devno][1] |= t->reg2; + + dev_dbg(priv->dev, " -> %08x %08x\n", + priv->treg[adev->devno][0], + priv->treg[adev->devno][1]); + + /* Apply to hardware */ + pata_macio_apply_timings(ap, adev->devno); +} + +/* + * Blast some well known "safe" values to the timing registers at init or + * wakeup from sleep time, before we do real calculation + */ +static void pata_macio_default_timings(struct pata_macio_priv *priv) +{ + unsigned int value, value2 = 0; + + switch(priv->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; + } + priv->treg[0][0] = priv->treg[1][0] = value; + priv->treg[0][1] = priv->treg[1][1] = value2; +} + +static int pata_macio_cable_detect(struct ata_port *ap) +{ + struct pata_macio_priv *priv = ap->private_data; + + /* Get cable type from device-tree */ + if (priv->kind == controller_kl_ata4 || + priv->kind == controller_un_ata6 || + priv->kind == controller_k2_ata6 || + priv->kind == controller_sh_ata6) { + const char* cable = of_get_property(priv->node, "cable-type", + NULL); + struct device_node *root = of_find_node_by_path("/"); + const char *model = of_get_property(root, "model", NULL); + + 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; + } + } + + /* G5's seem to have incorrect cable type in device-tree. + * Let's assume they always have a 80 conductor cable, this seem to + * be always the case unless the user mucked around + */ + if (of_device_is_compatible(priv->node, "K2-UATA") || + of_device_is_compatible(priv->node, "shasta-ata")) + return ATA_CBL_PATA80; + + /* Anything else is 40 connectors */ + return ATA_CBL_PATA40; +} + +static void pata_macio_qc_prep(struct ata_queued_cmd *qc) +{ + unsigned int write = (qc->tf.flags & ATA_TFLAG_WRITE); + struct ata_port *ap = qc->ap; + struct pata_macio_priv *priv = ap->private_data; + struct scatterlist *sg; + struct dbdma_cmd *table; + unsigned int si, pi; + + dev_dbgdma(priv->dev, "%s: qc %p flags %lx, write %d dev %d\n", + __func__, qc, qc->flags, write, qc->dev->devno); + + if (!(qc->flags & ATA_QCFLAG_DMAMAP)) + return; + + table = (struct dbdma_cmd *) priv->dma_table_cpu; + + pi = 0; + for_each_sg(qc->sg, sg, qc->n_elem, si) { + u32 addr, sg_len, len; + + /* determine if physical DMA addr spans 64K boundary. + * Note h/w doesn't support 64-bit, so we unconditionally + * truncate dma_addr_t to u32. + */ + addr = (u32) sg_dma_address(sg); + sg_len = sg_dma_len(sg); + + while (sg_len) { + /* table overflow should never happen */ + BUG_ON (pi++ >= MAX_DCMDS); + + len = (sg_len < MAX_DBDMA_SEG) ? sg_len : MAX_DBDMA_SEG; + st_le16(&table->command, write ? OUTPUT_MORE: INPUT_MORE); + st_le16(&table->req_count, len); + st_le32(&table->phy_addr, addr); + table->cmd_dep = 0; + table->xfer_status = 0; + table->res_count = 0; + addr += len; + sg_len -= len; + ++table; + } + } + + /* Should never happen according to Tejun */ + BUG_ON(!pi); + + /* Convert the last command to an input/output */ + table--; + st_le16(&table->command, write ? OUTPUT_LAST: INPUT_LAST); + table++; + + /* Add the stop command to the end of the list */ + memset(table, 0, sizeof(struct dbdma_cmd)); + st_le16(&table->command, DBDMA_STOP); + + dev_dbgdma(priv->dev, "%s: %d DMA list entries\n", __func__, pi); +} + + +static void pata_macio_freeze(struct ata_port *ap) +{ + struct dbdma_regs __iomem *dma_regs = ap->ioaddr.bmdma_addr; + + if (dma_regs) { + unsigned int timeout = 1000000; + + /* Make sure DMA controller is stopped */ + writel((RUN|PAUSE|FLUSH|WAKE|DEAD) << 16, &dma_regs->control); + while (--timeout && (readl(&dma_regs->status) & RUN)) + udelay(1); + } + + ata_sff_freeze(ap); +} + + +static void pata_macio_bmdma_setup(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + struct pata_macio_priv *priv = ap->private_data; + struct dbdma_regs __iomem *dma_regs = ap->ioaddr.bmdma_addr; + int dev = qc->dev->devno; + + dev_dbgdma(priv->dev, "%s: qc %p\n", __func__, qc); + + /* Make sure DMA commands updates are visible */ + writel(priv->dma_table_dma, &dma_regs->cmdptr); + + /* On KeyLargo 66Mhz cell, we need to add 60ns to wrDataSetup on + * UDMA reads + */ + if (priv->kind == controller_kl_ata4 && + (priv->treg[dev][0] & TR_66_UDMA_EN)) { + void __iomem *rbase = ap->ioaddr.cmd_addr; + u32 reg = priv->treg[dev][0]; + + if (!(qc->tf.flags & ATA_TFLAG_WRITE)) + reg += 0x00800000; + writel(reg, rbase + IDE_TIMING_CONFIG); + } + + /* issue r/w command */ + ap->ops->sff_exec_command(ap, &qc->tf); +} + +static void pata_macio_bmdma_start(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + struct pata_macio_priv *priv = ap->private_data; + struct dbdma_regs __iomem *dma_regs = ap->ioaddr.bmdma_addr; + + dev_dbgdma(priv->dev, "%s: qc %p\n", __func__, qc); + + writel((RUN << 16) | RUN, &dma_regs->control); + /* Make sure it gets to the controller right now */ + (void)readl(&dma_regs->control); +} + +static void pata_macio_bmdma_stop(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + struct pata_macio_priv *priv = ap->private_data; + struct dbdma_regs __iomem *dma_regs = ap->ioaddr.bmdma_addr; + unsigned int timeout = 1000000; + + dev_dbgdma(priv->dev, "%s: qc %p\n", __func__, qc); + + /* Stop the DMA engine and wait for it to full halt */ + writel (((RUN|WAKE|DEAD) << 16), &dma_regs->control); + while (--timeout && (readl(&dma_regs->status) & RUN)) + udelay(1); +} + +static u8 pata_macio_bmdma_status(struct ata_port *ap) +{ + struct pata_macio_priv *priv = ap->private_data; + struct dbdma_regs __iomem *dma_regs = ap->ioaddr.bmdma_addr; + u32 dstat, rstat = ATA_DMA_INTR; + unsigned long timeout = 0; + + dstat = readl(&dma_regs->status); + + dev_dbgdma(priv->dev, "%s: dstat=%x\n", __func__, dstat); + + /* We have two 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. + * + */ + + /* First check for errors */ + if ((dstat & (RUN|DEAD)) != RUN) + rstat |= ATA_DMA_ERR; + + /* If ACTIVE is cleared, the STOP command has been hit and + * the transfer is complete. If not, we have to flush the + * channel. + */ + if ((dstat & ACTIVE) == 0) + return rstat; + + dev_dbgdma(priv->dev, "%s: DMA still active, flushing...\n", __func__); + + /* 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_regs->control); + for (;;) { + udelay(1); + dstat = readl(&dma_regs->status); + if ((dstat & FLUSH) == 0) + break; + if (++timeout > 1000) { + dev_warn(priv->dev, "timeout flushing DMA\n"); + rstat |= ATA_DMA_ERR; + break; + } + } + return rstat; +} + +/* port_start is when we allocate the DMA command list */ +static int pata_macio_port_start(struct ata_port *ap) +{ + struct pata_macio_priv *priv = ap->private_data; + + if (ap->ioaddr.bmdma_addr == NULL) + return 0; + + /* 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. + */ + priv->dma_table_cpu = + dmam_alloc_coherent(priv->dev, + (MAX_DCMDS + 2) * sizeof(struct dbdma_cmd), + &priv->dma_table_dma, GFP_KERNEL); + if (priv->dma_table_cpu == NULL) { + dev_err(priv->dev, "Unable to allocate DMA command list\n"); + ap->ioaddr.bmdma_addr = NULL; + } + return 0; +} + +static void pata_macio_irq_clear(struct ata_port *ap) +{ + struct pata_macio_priv *priv = ap->private_data; + + /* Nothing to do here */ + + dev_dbgdma(priv->dev, "%s\n", __func__); +} + +static void pata_macio_reset_hw(struct pata_macio_priv *priv, int resume) +{ + dev_dbg(priv->dev, "Enabling & resetting... \n"); + + if (priv->mediabay) + return; + + if (priv->kind == controller_ohare && !resume) { + /* 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, priv->node, 0, 1); + } else { + int rc; + + /* Reset and enable controller */ + rc = ppc_md.feature_call(PMAC_FTR_IDE_RESET, + priv->node, priv->aapl_bus_id, 1); + ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, + priv->node, priv->aapl_bus_id, 1); + msleep(10); + /* Only bother waiting if there's a reset control */ + if (rc == 0) { + ppc_md.feature_call(PMAC_FTR_IDE_RESET, + priv->node, priv->aapl_bus_id, 0); + msleep(IDE_WAKEUP_DELAY_MS); + } + } + + /* If resuming a PCI device, restore the config space here */ + if (priv->pdev && resume) { + int rc; + + pci_restore_state(priv->pdev); + rc = pcim_enable_device(priv->pdev); + if (rc) + dev_printk(KERN_ERR, &priv->pdev->dev, + "Failed to enable device after resume (%d)\n", rc); + else + pci_set_master(priv->pdev); + } + + /* On Kauai, initialize the FCR. We don't perform a reset, doesn't really + * seem necessary and speeds up the boot process + */ + if (priv->kauai_fcr) + writel(KAUAI_FCR_UATA_MAGIC | + KAUAI_FCR_UATA_RESET_N | + KAUAI_FCR_UATA_ENABLE, priv->kauai_fcr); +} + +/* Hook the standard slave config to fixup some HW related alignment + * restrictions + */ +static int pata_macio_slave_config(struct scsi_device *sdev) +{ + struct ata_port *ap = ata_shost_to_port(sdev->host); + struct pata_macio_priv *priv = ap->private_data; + struct ata_device *dev; + u16 cmd; + int rc; + + /* First call original */ + rc = ata_scsi_slave_config(sdev); + if (rc) + return rc; + + /* This is lifted from sata_nv */ + dev = &ap->link.device[sdev->id]; + + /* OHare has issues with non cache aligned DMA on some chipsets */ + if (priv->kind == controller_ohare) { + blk_queue_update_dma_alignment(sdev->request_queue, 31); + blk_queue_update_dma_pad(sdev->request_queue, 31); + + /* Tell the world about it */ + ata_dev_printk(dev, KERN_INFO, "OHare alignment limits applied\n"); + return 0; + } + + /* We only have issues with ATAPI */ + if (dev->class != ATA_DEV_ATAPI) + return 0; + + /* Shasta and K2 seem to have "issues" with reads ... */ + if (priv->kind == controller_sh_ata6 || priv->kind == controller_k2_ata6) { + /* Allright these are bad, apply restrictions */ + blk_queue_update_dma_alignment(sdev->request_queue, 15); + blk_queue_update_dma_pad(sdev->request_queue, 15); + + /* We enable MWI and hack cache line size directly here, this + * is specific to this chipset and not normal values, we happen + * to somewhat know what we are doing here (which is basically + * to do the same Apple does and pray they did not get it wrong :-) + */ + BUG_ON(!priv->pdev); + pci_write_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, 0x08); + pci_read_config_word(priv->pdev, PCI_COMMAND, &cmd); + pci_write_config_word(priv->pdev, PCI_COMMAND, + cmd | PCI_COMMAND_INVALIDATE); + + /* Tell the world about it */ + ata_dev_printk(dev, KERN_INFO, + "K2/Shasta alignment limits applied\n"); + } + + return 0; +} + +#ifdef CONFIG_PM + +static int pata_macio_do_suspend(struct pata_macio_priv *priv, pm_message_t mesg) +{ + int rc; + + /* First, core libata suspend to do most of the work */ + rc = ata_host_suspend(priv->host, mesg); + if (rc) + return rc; + + /* Restore to default timings */ + pata_macio_default_timings(priv); + + /* Mask interrupt. Not strictly necessary but old driver did + * it and I'd rather not change that here */ + disable_irq(priv->irq); + + /* The media bay will handle itself just fine */ + if (priv->mediabay) + return 0; + + /* Kauai has bus control FCRs directly here */ + if (priv->kauai_fcr) { + u32 fcr = readl(priv->kauai_fcr); + fcr &= ~(KAUAI_FCR_UATA_RESET_N | KAUAI_FCR_UATA_ENABLE); + writel(fcr, priv->kauai_fcr); + } + + /* For PCI, save state and disable DMA. No need to call + * pci_set_power_state(), the HW doesn't do D states that + * way, the platform code will take care of suspending the + * ASIC properly + */ + if (priv->pdev) { + pci_save_state(priv->pdev); + pci_disable_device(priv->pdev); + } + + /* Disable the bus on older machines and the cell on kauai */ + ppc_md.feature_call(PMAC_FTR_IDE_ENABLE, priv->node, + priv->aapl_bus_id, 0); + + return 0; +} + +static int pata_macio_do_resume(struct pata_macio_priv *priv) +{ + /* Reset and re-enable the HW */ + pata_macio_reset_hw(priv, 1); + + /* Sanitize drive timings */ + pata_macio_apply_timings(priv->host->ports[0], 0); + + /* We want our IRQ back ! */ + enable_irq(priv->irq); + + /* Let the libata core take it from there */ + ata_host_resume(priv->host); + + return 0; +} + +#endif /* CONFIG_PM */ + +static struct scsi_host_template pata_macio_sht = { + ATA_BASE_SHT(DRV_NAME), + .sg_tablesize = MAX_DCMDS, + /* We may not need that strict one */ + .dma_boundary = ATA_DMA_BOUNDARY, + .slave_configure = pata_macio_slave_config, +}; + +static struct ata_port_operations pata_macio_ops = { + .inherits = &ata_sff_port_ops, + + .freeze = pata_macio_freeze, + .set_piomode = pata_macio_set_timings, + .set_dmamode = pata_macio_set_timings, + .cable_detect = pata_macio_cable_detect, + .sff_dev_select = pata_macio_dev_select, + .qc_prep = pata_macio_qc_prep, + .mode_filter = ata_bmdma_mode_filter, + .bmdma_setup = pata_macio_bmdma_setup, + .bmdma_start = pata_macio_bmdma_start, + .bmdma_stop = pata_macio_bmdma_stop, + .bmdma_status = pata_macio_bmdma_status, + .port_start = pata_macio_port_start, + .sff_irq_clear = pata_macio_irq_clear, +}; + +static void __devinit pata_macio_invariants(struct pata_macio_priv *priv) +{ + const int *bidp; + + /* Identify the type of controller */ + if (of_device_is_compatible(priv->node, "shasta-ata")) { + priv->kind = controller_sh_ata6; + priv->timings = pata_macio_shasta_timings; + } else if (of_device_is_compatible(priv->node, "kauai-ata")) { + priv->kind = controller_un_ata6; + priv->timings = pata_macio_kauai_timings; + } else if (of_device_is_compatible(priv->node, "K2-UATA")) { + priv->kind = controller_k2_ata6; + priv->timings = pata_macio_kauai_timings; + } else if (of_device_is_compatible(priv->node, "keylargo-ata")) { + if (strcmp(priv->node->name, "ata-4") == 0) { + priv->kind = controller_kl_ata4; + priv->timings = pata_macio_kl66_timings; + } else { + priv->kind = controller_kl_ata3; + priv->timings = pata_macio_kl33_timings; + } + } else if (of_device_is_compatible(priv->node, "heathrow-ata")) { + priv->kind = controller_heathrow; + priv->timings = pata_macio_heathrow_timings; + } else { + priv->kind = controller_ohare; + priv->timings = pata_macio_ohare_timings; + } + + /* XXX FIXME --- setup priv->mediabay here */ + + /* Get Apple bus ID (for clock and ASIC control) */ + bidp = of_get_property(priv->node, "AAPL,bus-id", NULL); + priv->aapl_bus_id = bidp ? *bidp : 0; + + /* Fixup missing Apple bus ID in case of media-bay */ + if (priv->mediabay && bidp == 0) + priv->aapl_bus_id = 1; +} + +static void __devinit pata_macio_setup_ios(struct ata_ioports *ioaddr, + void __iomem * base, + void __iomem * dma) +{ + /* cmd_addr is the base of regs for that port */ + ioaddr->cmd_addr = base; + + /* taskfile registers */ + ioaddr->data_addr = base + (ATA_REG_DATA << 4); + ioaddr->error_addr = base + (ATA_REG_ERR << 4); + ioaddr->feature_addr = base + (ATA_REG_FEATURE << 4); + ioaddr->nsect_addr = base + (ATA_REG_NSECT << 4); + ioaddr->lbal_addr = base + (ATA_REG_LBAL << 4); + ioaddr->lbam_addr = base + (ATA_REG_LBAM << 4); + ioaddr->lbah_addr = base + (ATA_REG_LBAH << 4); + ioaddr->device_addr = base + (ATA_REG_DEVICE << 4); + ioaddr->status_addr = base + (ATA_REG_STATUS << 4); + ioaddr->command_addr = base + (ATA_REG_CMD << 4); + ioaddr->altstatus_addr = base + 0x160; + ioaddr->ctl_addr = base + 0x160; + ioaddr->bmdma_addr = dma; +} + +static void __devinit pmac_macio_calc_timing_masks(struct pata_macio_priv *priv, + struct ata_port_info *pinfo) +{ + int i = 0; + + pinfo->pio_mask = 0; + pinfo->mwdma_mask = 0; + pinfo->udma_mask = 0; + + while (priv->timings[i].mode > 0) { + unsigned int mask = 1U << (priv->timings[i].mode & 0x0f); + switch(priv->timings[i].mode & 0xf0) { + case 0x00: /* PIO */ + pinfo->pio_mask |= (mask >> 8); + break; + case 0x20: /* MWDMA */ + pinfo->mwdma_mask |= mask; + break; + case 0x40: /* UDMA */ + pinfo->udma_mask |= mask; + break; + } + i++; + } + dev_dbg(priv->dev, "Supported masks: PIO=%lx, MWDMA=%lx, UDMA=%lx\n", + pinfo->pio_mask, pinfo->mwdma_mask, pinfo->udma_mask); +} + +static int __devinit pata_macio_common_init(struct pata_macio_priv *priv, + resource_size_t tfregs, + resource_size_t dmaregs, + resource_size_t fcregs, + unsigned long irq) +{ + struct ata_port_info pinfo; + const struct ata_port_info *ppi[] = { &pinfo, NULL }; + void __iomem *dma_regs = NULL; + + /* Fill up privates with various invariants collected from the + * device-tree + */ + pata_macio_invariants(priv); + + /* Make sure we have sane initial timings in the cache */ + pata_macio_default_timings(priv); + + /* Not sure what the real max is but we know it's less than 64K, let's + * use 64K minus 256 + */ + dma_set_max_seg_size(priv->dev, MAX_DBDMA_SEG); + + /* Allocate libata host for 1 port */ + memset(&pinfo, 0, sizeof(struct ata_port_info)); + pmac_macio_calc_timing_masks(priv, &pinfo); + pinfo.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_MMIO | + ATA_FLAG_NO_LEGACY; + pinfo.port_ops = &pata_macio_ops; + pinfo.private_data = priv; + + priv->host = ata_host_alloc_pinfo(priv->dev, ppi, 1); + if (priv->host == NULL) { + dev_err(priv->dev, "Failed to allocate ATA port structure\n"); + return -ENOMEM; + } + + /* Setup the private data in host too */ + priv->host->private_data = priv; + + /* Map base registers */ + priv->tfregs = devm_ioremap(priv->dev, tfregs, 0x100); + if (priv->tfregs == NULL) { + dev_err(priv->dev, "Failed to map ATA ports\n"); + return -ENOMEM; + } + priv->host->iomap = &priv->tfregs; + + /* Map DMA regs */ + if (dmaregs != 0) { + dma_regs = devm_ioremap(priv->dev, dmaregs, + sizeof(struct dbdma_regs)); + if (dma_regs == NULL) + dev_warn(priv->dev, "Failed to map ATA DMA registers\n"); + } + + /* If chip has local feature control, map those regs too */ + if (fcregs != 0) { + priv->kauai_fcr = devm_ioremap(priv->dev, fcregs, 4); + if (priv->kauai_fcr == NULL) { + dev_err(priv->dev, "Failed to map ATA FCR register\n"); + return -ENOMEM; + } + } + + /* Setup port data structure */ + pata_macio_setup_ios(&priv->host->ports[0]->ioaddr, + priv->tfregs, dma_regs); + priv->host->ports[0]->private_data = priv; + + /* hard-reset the controller */ + pata_macio_reset_hw(priv, 0); + pata_macio_apply_timings(priv->host->ports[0], 0); + + /* Enable bus master if necessary */ + if (priv->pdev && dma_regs) + pci_set_master(priv->pdev); + + dev_info(priv->dev, "Activating pata-macio chipset %s, Apple bus ID %d\n", + macio_ata_names[priv->kind], priv->aapl_bus_id); + + /* Start it up */ + priv->irq = irq; + return ata_host_activate(priv->host, irq, ata_sff_interrupt, 0, + &pata_macio_sht); +} + +static int __devinit pata_macio_attach(struct macio_dev *mdev, + const struct of_device_id *match) +{ + struct pata_macio_priv *priv; + resource_size_t tfregs, dmaregs = 0; + unsigned long irq; + int rc; + + /* Check for broken device-trees */ + if (macio_resource_count(mdev) == 0) { + dev_err(&mdev->ofdev.dev, + "No addresses for controller\n"); + return -ENXIO; + } + + /* Enable managed resources */ + macio_enable_devres(mdev); + + /* Allocate and init private data structure */ + priv = devm_kzalloc(&mdev->ofdev.dev, + sizeof(struct pata_macio_priv), GFP_KERNEL); + if (priv == NULL) { + dev_err(&mdev->ofdev.dev, + "Failed to allocate private memory\n"); + return -ENOMEM; + } + priv->node = of_node_get(mdev->ofdev.node); + priv->mdev = mdev; + priv->dev = &mdev->ofdev.dev; + + /* Request memory resource for taskfile registers */ + if (macio_request_resource(mdev, 0, "pata-macio")) { + dev_err(&mdev->ofdev.dev, + "Cannot obtain taskfile resource\n"); + return -EBUSY; + } + tfregs = macio_resource_start(mdev, 0); + + /* Request resources for DMA registers if any */ + if (macio_resource_count(mdev) >= 2) { + if (macio_request_resource(mdev, 1, "pata-macio-dma")) + dev_err(&mdev->ofdev.dev, + "Cannot obtain DMA resource\n"); + else + dmaregs = macio_resource_start(mdev, 1); + } + + /* + * Fixup missing IRQ for some old implementations with broken + * device-trees. + * + * This is a bit bogus, it should be fixed in the device-tree itself, + * via the existing macio fixups, based on the type of interrupt + * controller in the machine. However, I have no test HW for this case, + * and this trick works well enough on those old machines... + */ + if (macio_irq_count(mdev) == 0) { + dev_warn(&mdev->ofdev.dev, + "No interrupts for controller, using 13\n"); + irq = irq_create_mapping(NULL, 13); + } else + irq = macio_irq(mdev, 0); + + /* Prevvent media bay callbacks until fully registered */ + lock_media_bay(priv->mdev->media_bay); + + /* Get register addresses and call common initialization */ + rc = pata_macio_common_init(priv, + tfregs, /* Taskfile regs */ + dmaregs, /* DBDMA regs */ + 0, /* Feature control */ + irq); + unlock_media_bay(priv->mdev->media_bay); + + return rc; +} + +static int __devexit pata_macio_detach(struct macio_dev *mdev) +{ + struct ata_host *host = macio_get_drvdata(mdev); + struct pata_macio_priv *priv = host->private_data; + + lock_media_bay(priv->mdev->media_bay); + + /* Make sure the mediabay callback doesn't try to access + * dead stuff + */ + priv->host->private_data = NULL; + + ata_host_detach(host); + + unlock_media_bay(priv->mdev->media_bay); + + return 0; +} + +#ifdef CONFIG_PM + +static int pata_macio_suspend(struct macio_dev *mdev, pm_message_t mesg) +{ + struct ata_host *host = macio_get_drvdata(mdev); + + return pata_macio_do_suspend(host->private_data, mesg); +} + +static int pata_macio_resume(struct macio_dev *mdev) +{ + struct ata_host *host = macio_get_drvdata(mdev); + + return pata_macio_do_resume(host->private_data); +} + +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PMAC_MEDIABAY +static void pata_macio_mb_event(struct macio_dev* mdev, int mb_state) +{ + struct ata_host *host = macio_get_drvdata(mdev); + struct ata_port *ap; + struct ata_eh_info *ehi; + struct ata_device *dev; + unsigned long flags; + + if (!host || !host->private_data) + return; + ap = host->ports[0]; + spin_lock_irqsave(ap->lock, flags); + ehi = &ap->link.eh_info; + if (mb_state == MB_CD) { + ata_ehi_push_desc(ehi, "mediabay plug"); + ata_ehi_hotplugged(ehi); + ata_port_freeze(ap); + } else { + ata_ehi_push_desc(ehi, "mediabay unplug"); + ata_for_each_dev(dev, &ap->link, ALL) + dev->flags |= ATA_DFLAG_DETACH; + ata_port_abort(ap); + } + spin_unlock_irqrestore(ap->lock, flags); + +} +#endif /* CONFIG_PMAC_MEDIABAY */ + + +static int __devinit pata_macio_pci_attach(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct pata_macio_priv *priv; + struct device_node *np; + resource_size_t rbase; + + /* We cannot use a MacIO controller without its OF device node */ + np = pci_device_to_OF_node(pdev); + if (np == NULL) { + dev_err(&pdev->dev, + "Cannot find OF device node for controller\n"); + return -ENODEV; + } + + /* Check that it can be enabled */ + if (pcim_enable_device(pdev)) { + dev_err(&pdev->dev, + "Cannot enable controller PCI device\n"); + return -ENXIO; + } + + /* Allocate and init private data structure */ + priv = devm_kzalloc(&pdev->dev, + sizeof(struct pata_macio_priv), GFP_KERNEL); + if (priv == NULL) { + dev_err(&pdev->dev, + "Failed to allocate private memory\n"); + return -ENOMEM; + } + priv->node = of_node_get(np); + priv->pdev = pdev; + priv->dev = &pdev->dev; + + /* Get MMIO regions */ + if (pci_request_regions(pdev, "pata-macio")) { + dev_err(&pdev->dev, + "Cannot obtain PCI resources\n"); + return -EBUSY; + } + + /* Get register addresses and call common initialization */ + rbase = pci_resource_start(pdev, 0); + if (pata_macio_common_init(priv, + rbase + 0x2000, /* Taskfile regs */ + rbase + 0x1000, /* DBDMA regs */ + rbase, /* Feature control */ + pdev->irq)) + return -ENXIO; + + return 0; +} + +static void __devexit pata_macio_pci_detach(struct pci_dev *pdev) +{ + struct ata_host *host = dev_get_drvdata(&pdev->dev); + + ata_host_detach(host); +} + +#ifdef CONFIG_PM + +static int pata_macio_pci_suspend(struct pci_dev *pdev, pm_message_t mesg) +{ + struct ata_host *host = dev_get_drvdata(&pdev->dev); + + return pata_macio_do_suspend(host->private_data, mesg); +} + +static int pata_macio_pci_resume(struct pci_dev *pdev) +{ + struct ata_host *host = dev_get_drvdata(&pdev->dev); + + return pata_macio_do_resume(host->private_data); +} + +#endif /* CONFIG_PM */ + +static struct of_device_id pata_macio_match[] = +{ + { + .name = "IDE", + }, + { + .name = "ATA", + }, + { + .type = "ide", + }, + { + .type = "ata", + }, + {}, +}; + +static struct macio_driver pata_macio_driver = +{ + .name = "pata-macio", + .match_table = pata_macio_match, + .probe = pata_macio_attach, + .remove = pata_macio_detach, +#ifdef CONFIG_PM + .suspend = pata_macio_suspend, + .resume = pata_macio_resume, +#endif +#ifdef CONFIG_PMAC_MEDIABAY + .mediabay_event = pata_macio_mb_event, +#endif + .driver = { + .owner = THIS_MODULE, + }, +}; + +static const struct pci_device_id pata_macio_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 }, + {}, +}; + +static struct pci_driver pata_macio_pci_driver = { + .name = "pata-pci-macio", + .id_table = pata_macio_pci_match, + .probe = pata_macio_pci_attach, + .remove = pata_macio_pci_detach, +#ifdef CONFIG_PM + .suspend = pata_macio_pci_suspend, + .resume = pata_macio_pci_resume, +#endif + .driver = { + .owner = THIS_MODULE, + }, +}; +MODULE_DEVICE_TABLE(pci, pata_macio_pci_match); + + +static int __init pata_macio_init(void) +{ + int rc; + + if (!machine_is(powermac)) + return -ENODEV; + + rc = pci_register_driver(&pata_macio_pci_driver); + if (rc) + return rc; + rc = macio_register_driver(&pata_macio_driver); + if (rc) { + pci_unregister_driver(&pata_macio_pci_driver); + return rc; + } + return 0; +} + +static void __exit pata_macio_exit(void) +{ + macio_unregister_driver(&pata_macio_driver); + pci_unregister_driver(&pata_macio_pci_driver); +} + +module_init(pata_macio_init); +module_exit(pata_macio_exit); + +MODULE_AUTHOR("Benjamin Herrenschmidt"); +MODULE_DESCRIPTION("Apple MacIO PATA driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); |