diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/ata/pata_bf54x.c | 77 |
2 files changed, 37 insertions, 47 deletions
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index f4dc0e39597..ba63619ae5d 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -650,11 +650,4 @@ config PATA_BF54X If unsure, say N. -config PATA_BF54X_DMA - bool "DMA mode" - depends on PATA_BF54X - default y - help - Enable DMA mode for Blackfin ATAPI controller. - endif # ATA diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c index 747549e4563..b5e38426b81 100644 --- a/drivers/ata/pata_bf54x.c +++ b/drivers/ata/pata_bf54x.c @@ -1092,14 +1092,15 @@ static unsigned int bfin_bus_softreset(struct ata_port *ap, * Note: Original code is ata_std_softreset(). */ -static int bfin_std_softreset(struct ata_port *ap, unsigned int *classes, +static int bfin_std_softreset(struct ata_link *link, unsigned int *classes, unsigned long deadline) { + struct ata_port *ap = link->ap; unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS; unsigned int devmask = 0, err_mask; u8 err; - if (ata_port_offline(ap)) { + if (ata_link_offline(link)) { classes[0] = ATA_DEV_NONE; goto out; } @@ -1122,9 +1123,11 @@ static int bfin_std_softreset(struct ata_port *ap, unsigned int *classes, } /* determine by signature whether we have ATA or ATAPI devices */ - classes[0] = ata_dev_try_classify(ap, 0, &err); + classes[0] = ata_dev_try_classify(&ap->link.device[0], + devmask & (1 << 0), &err); if (slave_possible && err != 0x81) - classes[1] = ata_dev_try_classify(ap, 1, &err); + classes[1] = ata_dev_try_classify(&ap->link.device[1], + devmask & (1 << 1), &err); out: return 0; @@ -1167,7 +1170,7 @@ static unsigned char bfin_bmdma_status(struct ata_port *ap) static void bfin_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) { - struct ata_port *ap = adev->ap; + struct ata_port *ap = adev->link->ap; unsigned int words = buflen >> 1; unsigned short *buf16 = (u16 *) buf; void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr; @@ -1206,7 +1209,10 @@ static void bfin_irq_clear(struct ata_port *ap) void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr; pr_debug("in atapi irq clear\n"); - ATAPI_SET_INT_STATUS(base, 0x1FF); + + ATAPI_SET_INT_STATUS(base, ATAPI_GET_INT_STATUS(base)|ATAPI_DEV_INT + | MULTI_DONE_INT | UDMAIN_DONE_INT | UDMAOUT_DONE_INT + | MULTI_TERM_INT | UDMAIN_TERM_INT | UDMAOUT_TERM_INT); } /** @@ -1234,33 +1240,6 @@ static unsigned char bfin_irq_on(struct ata_port *ap) } /** - * bfin_irq_ack - Acknowledge a device interrupt. - * @ap: Port on which interrupts are enabled. - * - * Note: Original code is ata_irq_ack(). - */ - -static unsigned char bfin_irq_ack(struct ata_port *ap, unsigned int chk_drq) -{ - void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr; - unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; - unsigned char status; - - pr_debug("in atapi irq ack\n"); - status = ata_busy_wait(ap, bits, 1000); - if (status & bits) - if (ata_msg_err(ap)) - dev_err(ap->dev, "abnormal status 0x%X\n", status); - - /* get controller status; clear intr, err bits */ - ATAPI_SET_INT_STATUS(base, ATAPI_GET_INT_STATUS(base)|ATAPI_DEV_INT - | MULTI_DONE_INT | UDMAIN_DONE_INT | UDMAOUT_DONE_INT - | MULTI_TERM_INT | UDMAIN_TERM_INT | UDMAOUT_TERM_INT); - - return bfin_bmdma_status(ap); -} - -/** * bfin_bmdma_freeze - Freeze DMA controller port * @ap: port to freeze * @@ -1308,8 +1287,9 @@ void bfin_bmdma_thaw(struct ata_port *ap) * Note: Original code is ata_std_postreset(). */ -static void bfin_std_postreset(struct ata_port *ap, unsigned int *classes) +static void bfin_std_postreset(struct ata_link *link, unsigned int *classes) { + struct ata_port *ap = link->ap; void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr; /* re-enable interrupts */ @@ -1395,7 +1375,6 @@ static struct scsi_host_template bfin_sht = { }; static const struct ata_port_operations bfin_pata_ops = { - .port_disable = ata_port_disable, .set_piomode = bfin_set_piomode, .set_dmamode = bfin_set_dmamode, @@ -1423,7 +1402,6 @@ static const struct ata_port_operations bfin_pata_ops = { .irq_handler = ata_interrupt, .irq_clear = bfin_irq_clear, .irq_on = bfin_irq_on, - .irq_ack = bfin_irq_ack, .port_start = bfin_port_start, .port_stop = bfin_port_stop, @@ -1437,11 +1415,7 @@ static struct ata_port_info bfin_port_info[] = { | ATA_FLAG_NO_LEGACY, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0, -#ifdef CONFIG_PATA_BF54X_DMA - .udma_mask = ATA_UDMA5, -#else .udma_mask = 0, -#endif .port_ops = &bfin_pata_ops, }, }; @@ -1607,9 +1581,25 @@ static struct platform_driver bfin_atapi_driver = { }, }; +#define ATAPI_MODE_SIZE 10 +static char bfin_atapi_mode[ATAPI_MODE_SIZE]; + static int __init bfin_atapi_init(void) { pr_info("register bfin atapi driver\n"); + + switch(bfin_atapi_mode[0]) { + case 'p': + case 'P': + break; + case 'm': + case 'M': + bfin_port_info[0].mwdma_mask = ATA_MWDMA2; + break; + default: + bfin_port_info[0].udma_mask = ATA_UDMA5; + }; + return platform_driver_register(&bfin_atapi_driver); } @@ -1620,6 +1610,13 @@ static void __exit bfin_atapi_exit(void) module_init(bfin_atapi_init); module_exit(bfin_atapi_exit); +/* + * ATAPI mode: + * pio/PIO + * udma/UDMA (default) + * mwdma/MWDMA + */ +module_param_string(bfin_atapi_mode, bfin_atapi_mode, ATAPI_MODE_SIZE, 0); MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>"); MODULE_DESCRIPTION("PATA driver for blackfin 54x ATAPI controller"); |