diff options
Diffstat (limited to 'drivers/ata/libata-sff.c')
| -rw-r--r-- | drivers/ata/libata-sff.c | 185 |
1 files changed, 120 insertions, 65 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 9033d164c4ec..c59ad76c84b1 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -66,6 +66,7 @@ const struct ata_port_operations ata_sff_port_ops = { .port_start = ata_sff_port_start, }; +EXPORT_SYMBOL_GPL(ata_sff_port_ops); const struct ata_port_operations ata_bmdma_port_ops = { .inherits = &ata_sff_port_ops, @@ -77,6 +78,14 @@ const struct ata_port_operations ata_bmdma_port_ops = { .bmdma_stop = ata_bmdma_stop, .bmdma_status = ata_bmdma_status, }; +EXPORT_SYMBOL_GPL(ata_bmdma_port_ops); + +const struct ata_port_operations ata_bmdma32_port_ops = { + .inherits = &ata_bmdma_port_ops, + + .sff_data_xfer = ata_sff_data_xfer32, +}; +EXPORT_SYMBOL_GPL(ata_bmdma32_port_ops); /** * ata_fill_sg - Fill PCI IDE PRD table @@ -166,8 +175,9 @@ static void ata_fill_sg_dumb(struct ata_queued_cmd *qc) blen = len & 0xffff; ap->prd[pi].addr = cpu_to_le32(addr); if (blen == 0) { - /* Some PATA chipsets like the CS5530 can't - cope with 0x0000 meaning 64K as the spec says */ + /* Some PATA chipsets like the CS5530 can't + cope with 0x0000 meaning 64K as the spec + says */ ap->prd[pi].flags_len = cpu_to_le32(0x8000); blen = 0x8000; ap->prd[++pi].addr = cpu_to_le32(addr + 0x8000); @@ -200,6 +210,7 @@ void ata_sff_qc_prep(struct ata_queued_cmd *qc) ata_fill_sg(qc); } +EXPORT_SYMBOL_GPL(ata_sff_qc_prep); /** * ata_sff_dumb_qc_prep - Prepare taskfile for submission @@ -217,6 +228,7 @@ void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc) ata_fill_sg_dumb(qc); } +EXPORT_SYMBOL_GPL(ata_sff_dumb_qc_prep); /** * ata_sff_check_status - Read device status reg & clear interrupt @@ -233,6 +245,7 @@ u8 ata_sff_check_status(struct ata_port *ap) { return ioread8(ap->ioaddr.status_addr); } +EXPORT_SYMBOL_GPL(ata_sff_check_status); /** * ata_sff_altstatus - Read device alternate status reg @@ -275,7 +288,7 @@ static u8 ata_sff_irq_status(struct ata_port *ap) status = ata_sff_altstatus(ap); /* Not us: We are busy */ if (status & ATA_BUSY) - return status; + return status; } /* Clear INTRQ latch */ status = ap->ops->sff_check_status(ap); @@ -319,6 +332,7 @@ void ata_sff_pause(struct ata_port *ap) ata_sff_sync(ap); ndelay(400); } +EXPORT_SYMBOL_GPL(ata_sff_pause); /** * ata_sff_dma_pause - Pause before commencing DMA @@ -327,7 +341,7 @@ void ata_sff_pause(struct ata_port *ap) * Perform I/O fencing and ensure sufficient cycle delays occur * for the HDMA1:0 transition */ - + void ata_sff_dma_pause(struct ata_port *ap) { if (ap->ops->sff_check_altstatus || ap->ioaddr.altstatus_addr) { @@ -341,6 +355,7 @@ void ata_sff_dma_pause(struct ata_port *ap) corruption. */ BUG(); } +EXPORT_SYMBOL_GPL(ata_sff_dma_pause); /** * ata_sff_busy_sleep - sleep until BSY clears, or timeout @@ -396,6 +411,7 @@ int ata_sff_busy_sleep(struct ata_port *ap, return 0; } +EXPORT_SYMBOL_GPL(ata_sff_busy_sleep); static int ata_sff_check_ready(struct ata_link *link) { @@ -422,6 +438,7 @@ int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline) { return ata_wait_ready(link, deadline, ata_sff_check_ready); } +EXPORT_SYMBOL_GPL(ata_sff_wait_ready); /** * ata_sff_dev_select - Select device 0/1 on ATA bus @@ -449,6 +466,7 @@ void ata_sff_dev_select(struct ata_port *ap, unsigned int device) iowrite8(tmp, ap->ioaddr.device_addr); ata_sff_pause(ap); /* needed; also flushes, for mmio */ } +EXPORT_SYMBOL_GPL(ata_sff_dev_select); /** * ata_dev_select - Select device 0/1 on ATA bus @@ -513,6 +531,7 @@ u8 ata_sff_irq_on(struct ata_port *ap) return tmp; } +EXPORT_SYMBOL_GPL(ata_sff_irq_on); /** * ata_sff_irq_clear - Clear PCI IDE BMDMA interrupt. @@ -534,6 +553,7 @@ void ata_sff_irq_clear(struct ata_port *ap) iowrite8(ioread8(mmio + ATA_DMA_STATUS), mmio + ATA_DMA_STATUS); } +EXPORT_SYMBOL_GPL(ata_sff_irq_clear); /** * ata_sff_tf_load - send taskfile registers to host controller @@ -593,6 +613,7 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) ata_wait_idle(ap); } +EXPORT_SYMBOL_GPL(ata_sff_tf_load); /** * ata_sff_tf_read - input device's ATA taskfile shadow registers @@ -633,6 +654,7 @@ void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf) WARN_ON(1); } } +EXPORT_SYMBOL_GPL(ata_sff_tf_read); /** * ata_sff_exec_command - issue ATA command to host controller @@ -652,6 +674,7 @@ void ata_sff_exec_command(struct ata_port *ap, const struct ata_taskfile *tf) iowrite8(tf->command, ap->ioaddr.command_addr); ata_sff_pause(ap); } +EXPORT_SYMBOL_GPL(ata_sff_exec_command); /** * ata_tf_to_host - issue ATA taskfile to host controller @@ -717,6 +740,53 @@ unsigned int ata_sff_data_xfer(struct ata_device *dev, unsigned char *buf, return words << 1; } +EXPORT_SYMBOL_GPL(ata_sff_data_xfer); + +/** + * ata_sff_data_xfer32 - Transfer data by PIO + * @dev: device to target + * @buf: data buffer + * @buflen: buffer length + * @rw: read/write + * + * Transfer data from/to the device data register by PIO using 32bit + * I/O operations. + * + * LOCKING: + * Inherited from caller. + * + * RETURNS: + * Bytes consumed. + */ + +unsigned int ata_sff_data_xfer32(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) +{ + struct ata_port *ap = dev->link->ap; + void __iomem *data_addr = ap->ioaddr.data_addr; + unsigned int words = buflen >> 2; + int slop = buflen & 3; + + /* Transfer multiple of 4 bytes */ + if (rw == READ) + ioread32_rep(data_addr, buf, words); + else + iowrite32_rep(data_addr, buf, words); + + if (unlikely(slop)) { + __le32 pad; + if (rw == READ) { + pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); + memcpy(buf + buflen - slop, &pad, slop); + } else { + memcpy(&pad, buf + buflen - slop, slop); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); + } + words++; + } + return words << 2; +} +EXPORT_SYMBOL_GPL(ata_sff_data_xfer32); /** * ata_sff_data_xfer_noirq - Transfer data by PIO @@ -746,6 +816,7 @@ unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, unsigned char *buf, return consumed; } +EXPORT_SYMBOL_GPL(ata_sff_data_xfer_noirq); /** * ata_pio_sector - Transfer a sector of data. @@ -922,13 +993,15 @@ next_sg: buf = kmap_atomic(page, KM_IRQ0); /* do the actual data transfer */ - consumed = ap->ops->sff_data_xfer(dev, buf + offset, count, rw); + consumed = ap->ops->sff_data_xfer(dev, buf + offset, + count, rw); kunmap_atomic(buf, KM_IRQ0); local_irq_restore(flags); } else { buf = page_address(page); - consumed = ap->ops->sff_data_xfer(dev, buf + offset, count, rw); + consumed = ap->ops->sff_data_xfer(dev, buf + offset, + count, rw); } bytes -= min(bytes, consumed); @@ -1013,18 +1086,19 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc) * RETURNS: * 1 if ok in workqueue, 0 otherwise. */ -static inline int ata_hsm_ok_in_wq(struct ata_port *ap, struct ata_queued_cmd *qc) +static inline int ata_hsm_ok_in_wq(struct ata_port *ap, + struct ata_queued_cmd *qc) { if (qc->tf.flags & ATA_TFLAG_POLLING) return 1; if (ap->hsm_task_state == HSM_ST_FIRST) { if (qc->tf.protocol == ATA_PROT_PIO && - (qc->tf.flags & ATA_TFLAG_WRITE)) + (qc->tf.flags & ATA_TFLAG_WRITE)) return 1; if (ata_is_atapi(qc->tf.protocol) && - !(qc->dev->flags & ATA_DFLAG_CDB_INTR)) + !(qc->dev->flags & ATA_DFLAG_CDB_INTR)) return 1; } @@ -1338,6 +1412,7 @@ fsm_start: return poll_next; } +EXPORT_SYMBOL_GPL(ata_sff_hsm_move); void ata_pio_task(struct work_struct *work) { @@ -1507,6 +1582,7 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc) return 0; } +EXPORT_SYMBOL_GPL(ata_sff_qc_issue); /** * ata_sff_qc_fill_rtf - fill result TF using ->sff_tf_read @@ -1526,6 +1602,7 @@ bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc) qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf); return true; } +EXPORT_SYMBOL_GPL(ata_sff_qc_fill_rtf); /** * ata_sff_host_intr - Handle host interrupt for given (port, task) @@ -1623,6 +1700,7 @@ idle_irq: #endif return 0; /* irq not handled */ } +EXPORT_SYMBOL_GPL(ata_sff_host_intr); /** * ata_sff_interrupt - Default ATA host interrupt handler @@ -1667,6 +1745,7 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance) return IRQ_RETVAL(handled); } +EXPORT_SYMBOL_GPL(ata_sff_interrupt); /** * ata_sff_freeze - Freeze SFF controller port @@ -1695,6 +1774,7 @@ void ata_sff_freeze(struct ata_port *ap) ap->ops->sff_irq_clear(ap); } +EXPORT_SYMBOL_GPL(ata_sff_freeze); /** * ata_sff_thaw - Thaw SFF controller port @@ -1712,6 +1792,7 @@ void ata_sff_thaw(struct ata_port *ap) ap->ops->sff_irq_clear(ap); ap->ops->sff_irq_on(ap); } +EXPORT_SYMBOL_GPL(ata_sff_thaw); /** * ata_sff_prereset - prepare SFF link for reset @@ -1753,6 +1834,7 @@ int ata_sff_prereset(struct ata_link *link, unsigned long deadline) return 0; } +EXPORT_SYMBOL_GPL(ata_sff_prereset); /** * ata_devchk - PATA device presence detection @@ -1865,6 +1947,7 @@ unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, return class; } +EXPORT_SYMBOL_GPL(ata_sff_dev_classify); /** * ata_sff_wait_after_reset - wait for devices to become ready after reset @@ -1941,6 +2024,7 @@ int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, return ret; } +EXPORT_SYMBOL_GPL(ata_sff_wait_after_reset); static int ata_bus_softreset(struct ata_port *ap, unsigned int devmask, unsigned long deadline) @@ -2013,6 +2097,7 @@ int ata_sff_softreset(struct ata_link *link, unsigned int *classes, DPRINTK("EXIT, classes[0]=%u [1]=%u\n", classes[0], classes[1]); return 0; } +EXPORT_SYMBOL_GPL(ata_sff_softreset); /** * sata_sff_hardreset - reset host port via SATA phy reset @@ -2045,6 +2130,7 @@ int sata_sff_hardreset(struct ata_link *link, unsigned int *class, DPRINTK("EXIT, class=%u\n", *class); return rc; } +EXPORT_SYMBOL_GPL(sata_sff_hardreset); /** * ata_sff_postreset - SFF postreset callback @@ -2080,6 +2166,7 @@ void ata_sff_postreset(struct ata_link *link, unsigned int *classes) if (ap->ioaddr.ctl_addr) iowrite8(ap->ctl, ap->ioaddr.ctl_addr); } +EXPORT_SYMBOL_GPL(ata_sff_postreset); /** * ata_sff_error_handler - Stock error handler for BMDMA controller @@ -2152,6 +2239,7 @@ void ata_sff_error_handler(struct ata_port *ap) ata_do_eh(ap, ap->ops->prereset, softreset, hardreset, ap->ops->postreset); } +EXPORT_SYMBOL_GPL(ata_sff_error_handler); /** * ata_sff_post_internal_cmd - Stock post_internal_cmd for SFF controller @@ -2174,6 +2262,7 @@ void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc) spin_unlock_irqrestore(ap->lock, flags); } +EXPORT_SYMBOL_GPL(ata_sff_post_internal_cmd); /** * ata_sff_port_start - Set port up for dma. @@ -2194,6 +2283,7 @@ int ata_sff_port_start(struct ata_port *ap) return ata_port_start(ap); return 0; } +EXPORT_SYMBOL_GPL(ata_sff_port_start); /** * ata_sff_std_ports - initialize ioaddr with standard port offsets. @@ -2219,6 +2309,7 @@ void ata_sff_std_ports(struct ata_ioports *ioaddr) ioaddr->status_addr = ioaddr->cmd_addr + ATA_REG_STATUS; ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD; } +EXPORT_SYMBOL_GPL(ata_sff_std_ports); unsigned long ata_bmdma_mode_filter(struct ata_device *adev, unsigned long xfer_mask) @@ -2230,6 +2321,7 @@ unsigned long ata_bmdma_mode_filter(struct ata_device *adev, xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); return xfer_mask; } +EXPORT_SYMBOL_GPL(ata_bmdma_mode_filter); /** * ata_bmdma_setup - Set up PCI IDE BMDMA transaction @@ -2258,6 +2350,7 @@ void ata_bmdma_setup(struct ata_queued_cmd *qc) /* issue r/w command */ ap->ops->sff_exec_command(ap, &qc->tf); } +EXPORT_SYMBOL_GPL(ata_bmdma_setup); /** * ata_bmdma_start - Start a PCI IDE BMDMA transaction @@ -2290,6 +2383,7 @@ void ata_bmdma_start(struct ata_queued_cmd *qc) * unneccessarily delayed for MMIO */ } +EXPORT_SYMBOL_GPL(ata_bmdma_start); /** * ata_bmdma_stop - Stop PCI IDE BMDMA transfer @@ -2314,6 +2408,7 @@ void ata_bmdma_stop(struct ata_queued_cmd *qc) /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ ata_sff_dma_pause(ap); } +EXPORT_SYMBOL_GPL(ata_bmdma_stop); /** * ata_bmdma_status - Read PCI IDE BMDMA status @@ -2330,6 +2425,7 @@ u8 ata_bmdma_status(struct ata_port *ap) { return ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); } +EXPORT_SYMBOL_GPL(ata_bmdma_status); /** * ata_bus_reset - reset host port and associated ATA channel @@ -2422,6 +2518,7 @@ err_out: DPRINTK("EXIT\n"); } +EXPORT_SYMBOL_GPL(ata_bus_reset); #ifdef CONFIG_PCI @@ -2449,6 +2546,7 @@ int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev) return -EOPNOTSUPP; return 0; } +EXPORT_SYMBOL_GPL(ata_pci_bmdma_clear_simplex); /** * ata_pci_bmdma_init - acquire PCI BMDMA resources and init ATA host @@ -2501,11 +2599,12 @@ int ata_pci_bmdma_init(struct ata_host *host) host->flags |= ATA_HOST_SIMPLEX; ata_port_desc(ap, "bmdma 0x%llx", - (unsigned long long)pci_resource_start(pdev, 4) + 8 * i); + (unsigned long long)pci_resource_start(pdev, 4) + 8 * i); } return 0; } +EXPORT_SYMBOL_GPL(ata_pci_bmdma_init); static int ata_resources_present(struct pci_dev *pdev, int port) { @@ -2513,7 +2612,7 @@ static int ata_resources_present(struct pci_dev *pdev, int port) /* Check the PCI resources for this channel are enabled */ port = port * 2; - for (i = 0; i < 2; i ++) { + for (i = 0; i < 2; i++) { if (pci_resource_start(pdev, port + i) == 0 || pci_resource_len(pdev, port + i) == 0) return 0; @@ -2598,6 +2697,7 @@ int ata_pci_sff_init_host(struct ata_host *host) return 0; } +EXPORT_SYMBOL_GPL(ata_pci_sff_init_host); /** * ata_pci_sff_prepare_host - helper to prepare native PCI ATA host @@ -2615,7 +2715,7 @@ int ata_pci_sff_init_host(struct ata_host *host) * 0 on success, -errno otherwise. */ int ata_pci_sff_prepare_host(struct pci_dev *pdev, - const struct ata_port_info * const * ppi, + const struct ata_port_info * const *ppi, struct ata_host **r_host) { struct ata_host *host; @@ -2645,17 +2745,18 @@ int ata_pci_sff_prepare_host(struct pci_dev *pdev, *r_host = host; return 0; - err_bmdma: +err_bmdma: /* This is necessary because PCI and iomap resources are * merged and releasing the top group won't release the * acquired resources if some of those have been acquired * before entering this function. */ pcim_iounmap_regions(pdev, 0xf); - err_out: +err_out: devres_release_group(&pdev->dev, NULL); return rc; } +EXPORT_SYMBOL_GPL(ata_pci_sff_prepare_host); /** * ata_pci_sff_activate_host - start SFF host, request IRQ and register it @@ -2741,7 +2842,7 @@ int ata_pci_sff_activate_host(struct ata_host *host, } rc = ata_host_register(host, sht); - out: +out: if (rc == 0) devres_remove_group(dev, NULL); else @@ -2749,6 +2850,7 @@ int ata_pci_sff_activate_host(struct ata_host *host, return rc; } +EXPORT_SYMBOL_GPL(ata_pci_sff_activate_host); /** * ata_pci_sff_init_one - Initialize/register PCI IDE host controller @@ -2776,7 +2878,7 @@ int ata_pci_sff_activate_host(struct ata_host *host, * Zero on success, negative on errno-based value on error. */ int ata_pci_sff_init_one(struct pci_dev *pdev, - const struct ata_port_info * const * ppi, + const struct ata_port_info * const *ppi, struct scsi_host_template *sht, void *host_priv) { struct device *dev = &pdev->dev; @@ -2815,7 +2917,7 @@ int ata_pci_sff_init_one(struct pci_dev *pdev, pci_set_master(pdev); rc = ata_pci_sff_activate_host(host, ata_sff_interrupt, sht); - out: +out: if (rc == 0) devres_remove_group(&pdev->dev, NULL); else @@ -2823,54 +2925,7 @@ int ata_pci_sff_init_one(struct pci_dev *pdev, return rc; } +EXPORT_SYMBOL_GPL(ata_pci_sff_init_one); #endif /* CONFIG_PCI */ -EXPORT_SYMBOL_GPL(ata_sff_port_ops); -EXPORT_SYMBOL_GPL(ata_bmdma_port_ops); -EXPORT_SYMBOL_GPL(ata_sff_qc_prep); -EXPORT_SYMBOL_GPL(ata_sff_dumb_qc_prep); -EXPORT_SYMBOL_GPL(ata_sff_dev_select); -EXPORT_SYMBOL_GPL(ata_sff_check_status); -EXPORT_SYMBOL_GPL(ata_sff_dma_pause); -EXPORT_SYMBOL_GPL(ata_sff_pause); -EXPORT_SYMBOL_GPL(ata_sff_busy_sleep); -EXPORT_SYMBOL_GPL(ata_sff_wait_ready); -EXPORT_SYMBOL_GPL(ata_sff_tf_load); -EXPORT_SYMBOL_GPL(ata_sff_tf_read); -EXPORT_SYMBOL_GPL(ata_sff_exec_command); -EXPORT_SYMBOL_GPL(ata_sff_data_xfer); -EXPORT_SYMBOL_GPL(ata_sff_data_xfer_noirq); -EXPORT_SYMBOL_GPL(ata_sff_irq_on); -EXPORT_SYMBOL_GPL(ata_sff_irq_clear); -EXPORT_SYMBOL_GPL(ata_sff_hsm_move); -EXPORT_SYMBOL_GPL(ata_sff_qc_issue); -EXPORT_SYMBOL_GPL(ata_sff_qc_fill_rtf); -EXPORT_SYMBOL_GPL(ata_sff_host_intr); -EXPORT_SYMBOL_GPL(ata_sff_interrupt); -EXPORT_SYMBOL_GPL(ata_sff_freeze); -EXPORT_SYMBOL_GPL(ata_sff_thaw); -EXPORT_SYMBOL_GPL(ata_sff_prereset); -EXPORT_SYMBOL_GPL(ata_sff_dev_classify); -EXPORT_SYMBOL_GPL(ata_sff_wait_after_reset); -EXPORT_SYMBOL_GPL(ata_sff_softreset); -EXPORT_SYMBOL_GPL(sata_sff_hardreset); -EXPORT_SYMBOL_GPL(ata_sff_postreset); -EXPORT_SYMBOL_GPL(ata_sff_error_handler); -EXPORT_SYMBOL_GPL(ata_sff_post_internal_cmd); -EXPORT_SYMBOL_GPL(ata_sff_port_start); -EXPORT_SYMBOL_GPL(ata_sff_std_ports); -EXPORT_SYMBOL_GPL(ata_bmdma_mode_filter); -EXPORT_SYMBOL_GPL(ata_bmdma_setup); -EXPORT_SYMBOL_GPL(ata_bmdma_start); -EXPORT_SYMBOL_GPL(ata_bmdma_stop); -EXPORT_SYMBOL_GPL(ata_bmdma_status); -EXPORT_SYMBOL_GPL(ata_bus_reset); -#ifdef CONFIG_PCI -EXPORT_SYMBOL_GPL(ata_pci_bmdma_clear_simplex); -EXPORT_SYMBOL_GPL(ata_pci_bmdma_init); -EXPORT_SYMBOL_GPL(ata_pci_sff_init_host); -EXPORT_SYMBOL_GPL(ata_pci_sff_prepare_host); -EXPORT_SYMBOL_GPL(ata_pci_sff_activate_host); -EXPORT_SYMBOL_GPL(ata_pci_sff_init_one); -#endif /* CONFIG_PCI */ |
