diff options
Diffstat (limited to 'drivers/scsi/ahci.c')
| -rw-r--r-- | drivers/scsi/ahci.c | 103 |
1 files changed, 78 insertions, 25 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index da5bd33d982..9a547ca9c86 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -32,13 +32,14 @@ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/sched.h> +#include <linux/dma-mapping.h> #include "scsi.h" #include <scsi/scsi_host.h> #include <linux/libata.h> #include <asm/io.h> #define DRV_NAME "ahci" -#define DRV_VERSION "1.00" +#define DRV_VERSION "1.01" enum { @@ -49,6 +50,7 @@ enum { AHCI_CMD_SLOT_SZ = 32 * 32, AHCI_RX_FIS_SZ = 256, AHCI_CMD_TBL_HDR = 0x80, + AHCI_CMD_TBL_CDB = 0x40, AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR + (AHCI_MAX_SG * 16), AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_SZ + AHCI_RX_FIS_SZ, @@ -133,6 +135,9 @@ enum { PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */ PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */ PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */ + + /* hpriv->flags bits */ + AHCI_FLAG_MSI = (1 << 0), }; struct ahci_cmd_hdr { @@ -182,6 +187,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc); static u8 ahci_check_status(struct ata_port *ap); static u8 ahci_check_err(struct ata_port *ap); static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); +static void ahci_remove_one (struct pci_dev *pdev); static Scsi_Host_Template ahci_sht = { .module = THIS_MODULE, @@ -271,7 +277,7 @@ static struct pci_driver ahci_pci_driver = { .name = DRV_NAME, .id_table = ahci_pci_tbl, .probe = ahci_init_one, - .remove = ata_pci_remove_one, + .remove = ahci_remove_one, }; @@ -289,6 +295,8 @@ static void ahci_host_stop(struct ata_host_set *host_set) { struct ahci_host_priv *hpriv = host_set->private_data; kfree(hpriv); + + ata_host_stop(host_set); } static int ahci_port_start(struct ata_port *ap) @@ -503,7 +511,8 @@ static void ahci_fill_sg(struct ata_queued_cmd *qc) static void ahci_qc_prep(struct ata_queued_cmd *qc) { - struct ahci_port_priv *pp = qc->ap->private_data; + struct ata_port *ap = qc->ap; + struct ahci_port_priv *pp = ap->private_data; u32 opts; const u32 cmd_fis_len = 5; /* five dwords */ @@ -515,18 +524,8 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc) opts = (qc->n_elem << 16) | cmd_fis_len; if (qc->tf.flags & ATA_TFLAG_WRITE) opts |= AHCI_CMD_WRITE; - - switch (qc->tf.protocol) { - case ATA_PROT_ATAPI: - case ATA_PROT_ATAPI_NODATA: - case ATA_PROT_ATAPI_DMA: + if (is_atapi_taskfile(&qc->tf)) opts |= AHCI_CMD_ATAPI; - break; - - default: - /* do nothing */ - break; - } pp->cmd_slot[0].opts = cpu_to_le32(opts); pp->cmd_slot[0].status = 0; @@ -538,6 +537,10 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc) * a SATA Register - Host to Device command FIS. */ ata_tf_to_fis(&qc->tf, pp->cmd_tbl, 0); + if (opts & AHCI_CMD_ATAPI) { + memset(pp->cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32); + memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, ap->cdb_len); + } if (!(qc->flags & ATA_QCFLAG_DMAMAP)) return; @@ -792,8 +795,6 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent) return rc; } } - - hpriv->flags |= HOST_CAP_64; } else { rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); if (rc) { @@ -876,15 +877,19 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent) } /* move to PCI layer, integrate w/ MSI stuff */ -static void pci_enable_intx(struct pci_dev *pdev) +static void pci_intx(struct pci_dev *pdev, int enable) { - u16 pci_command; + u16 pci_command, new; pci_read_config_word(pdev, PCI_COMMAND, &pci_command); - if (pci_command & PCI_COMMAND_INTX_DISABLE) { - pci_command &= ~PCI_COMMAND_INTX_DISABLE; + + if (enable) + new = pci_command & ~PCI_COMMAND_INTX_DISABLE; + else + new = pci_command | PCI_COMMAND_INTX_DISABLE; + + if (new != pci_command) pci_write_config_word(pdev, PCI_COMMAND, pci_command); - } } static void ahci_print_info(struct ata_probe_ent *probe_ent) @@ -966,7 +971,7 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) unsigned long base; void *mmio_base; unsigned int board_idx = (unsigned int) ent->driver_data; - int pci_dev_busy = 0; + int have_msi, pci_dev_busy = 0; int rc; VPRINTK("ENTER\n"); @@ -984,12 +989,17 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) goto err_out; } - pci_enable_intx(pdev); + if (pci_enable_msi(pdev) == 0) + have_msi = 1; + else { + pci_intx(pdev, 1); + have_msi = 0; + } probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL); if (probe_ent == NULL) { rc = -ENOMEM; - goto err_out_regions; + goto err_out_msi; } memset(probe_ent, 0, sizeof(*probe_ent)); @@ -1022,6 +1032,9 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) probe_ent->mmio_base = mmio_base; probe_ent->private_data = hpriv; + if (have_msi) + hpriv->flags |= AHCI_FLAG_MSI; + /* initialize adapter */ rc = ahci_host_init(probe_ent); if (rc) @@ -1041,7 +1054,11 @@ err_out_iounmap: iounmap(mmio_base); err_out_free_ent: kfree(probe_ent); -err_out_regions: +err_out_msi: + if (have_msi) + pci_disable_msi(pdev); + else + pci_intx(pdev, 0); pci_release_regions(pdev); err_out: if (!pci_dev_busy) @@ -1049,6 +1066,42 @@ err_out: return rc; } +static void ahci_remove_one (struct pci_dev *pdev) +{ + struct device *dev = pci_dev_to_dev(pdev); + struct ata_host_set *host_set = dev_get_drvdata(dev); + struct ahci_host_priv *hpriv = host_set->private_data; + struct ata_port *ap; + unsigned int i; + int have_msi; + + for (i = 0; i < host_set->n_ports; i++) { + ap = host_set->ports[i]; + + scsi_remove_host(ap->host); + } + + have_msi = hpriv->flags & AHCI_FLAG_MSI; + free_irq(host_set->irq, host_set); + + for (i = 0; i < host_set->n_ports; i++) { + ap = host_set->ports[i]; + + ata_scsi_release(ap->host); + scsi_host_put(ap->host); + } + + host_set->ops->host_stop(host_set); + kfree(host_set); + + if (have_msi) + pci_disable_msi(pdev); + else + pci_intx(pdev, 0); + pci_release_regions(pdev); + pci_disable_device(pdev); + dev_set_drvdata(dev, NULL); +} static int __init ahci_init(void) { |