diff options
| -rw-r--r-- | drivers/ata/sata_mv.c | 84 |
1 files changed, 55 insertions, 29 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 5f3d524c3387..7b73c73b3f34 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -253,10 +253,7 @@ enum { #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) enum { - /* Our DMA boundary is determined by an ePRD being unable to handle - * anything larger than 64KB - */ - MV_DMA_BOUNDARY = 0xffffU, + MV_DMA_BOUNDARY = 0xffffffffU, EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, @@ -384,10 +381,10 @@ static struct scsi_host_template mv_sht = { .queuecommand = ata_scsi_queuecmd, .can_queue = MV_USE_Q_DEPTH, .this_id = ATA_SHT_THIS_ID, - .sg_tablesize = MV_MAX_SG_CT / 2, + .sg_tablesize = MV_MAX_SG_CT, .cmd_per_lun = ATA_SHT_CMD_PER_LUN, .emulated = ATA_SHT_EMULATED, - .use_clustering = ATA_SHT_USE_CLUSTERING, + .use_clustering = 1, .proc_name = DRV_NAME, .dma_boundary = MV_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, @@ -585,6 +582,39 @@ static const struct mv_hw_ops mv6xxx_ops = { static int msi; /* Use PCI msi; either zero (off, default) or non-zero */ +/* move to PCI layer or libata core? */ +static int pci_go_64(struct pci_dev *pdev) +{ + int rc; + + if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { + rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); + if (rc) { + rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); + if (rc) { + dev_printk(KERN_ERR, &pdev->dev, + "64-bit DMA enable failed\n"); + return rc; + } + } + } else { + rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (rc) { + dev_printk(KERN_ERR, &pdev->dev, + "32-bit DMA enable failed\n"); + return rc; + } + rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); + if (rc) { + dev_printk(KERN_ERR, &pdev->dev, + "32-bit consistent DMA enable failed\n"); + return rc; + } + } + + return rc; +} + /* * Functions */ @@ -957,38 +987,30 @@ static void mv_port_stop(struct ata_port *ap) * LOCKING: * Inherited from caller. */ -static void mv_fill_sg(struct ata_queued_cmd *qc) +static unsigned int mv_fill_sg(struct ata_queued_cmd *qc) { struct mv_port_priv *pp = qc->ap->private_data; - unsigned int i = 0; + unsigned int n_sg = 0; struct scatterlist *sg; + struct mv_sg *mv_sg; + mv_sg = pp->sg_tbl; ata_for_each_sg(sg, qc) { - dma_addr_t addr; - u32 sg_len, len, offset; - - addr = sg_dma_address(sg); - sg_len = sg_dma_len(sg); - - while (sg_len) { - offset = addr & MV_DMA_BOUNDARY; - len = sg_len; - if ((offset + sg_len) > 0x10000) - len = 0x10000 - offset; - - pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff); - pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16); - pp->sg_tbl[i].flags_size = cpu_to_le32(len & 0xffff); + dma_addr_t addr = sg_dma_address(sg); + u32 sg_len = sg_dma_len(sg); - sg_len -= len; - addr += len; + mv_sg->addr = cpu_to_le32(addr & 0xffffffff); + mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); + mv_sg->flags_size = cpu_to_le32(sg_len & 0xffff); - if (!sg_len && ata_sg_is_last(sg, qc)) - pp->sg_tbl[i].flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); + if (ata_sg_is_last(sg, qc)) + mv_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); - i++; - } + mv_sg++; + n_sg++; } + + return n_sg; } static inline unsigned mv_inc_q_index(unsigned index) @@ -2327,6 +2349,10 @@ static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (rc) return rc; + rc = pci_go_64(pdev); + if (rc) + return rc; + probe_ent = devm_kzalloc(dev, sizeof(*probe_ent), GFP_KERNEL); if (probe_ent == NULL) return -ENOMEM; |