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Diffstat (limited to 'drivers/ata/sata_mv.c')
-rw-r--r--drivers/ata/sata_mv.c127
1 files changed, 115 insertions, 12 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 37ae5dc1070..23714aefb82 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -293,6 +293,10 @@ enum {
FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */
FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */
+ PHY_MODE9_GEN2 = 0x398,
+ PHY_MODE9_GEN1 = 0x39c,
+ PHYCFG_OFS = 0x3a0, /* only in 65n devices */
+
MV5_PHY_MODE = 0x74,
MV5_LTMODE = 0x30,
MV5_PHY_CTL = 0x0C,
@@ -609,6 +613,8 @@ static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
void __iomem *mmio);
static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio);
+static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv,
+ void __iomem *mmio, unsigned int port);
static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio);
static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
unsigned int port_no);
@@ -807,6 +813,14 @@ static const struct mv_hw_ops mv_soc_ops = {
.reset_bus = mv_soc_reset_bus,
};
+static const struct mv_hw_ops mv_soc_65n_ops = {
+ .phy_errata = mv_soc_65n_phy_errata,
+ .enable_leds = mv_soc_enable_leds,
+ .reset_hc = mv_soc_reset_hc,
+ .reset_flash = mv_soc_reset_flash,
+ .reset_bus = mv_soc_reset_bus,
+};
+
/*
* Functions
*/
@@ -1881,6 +1895,39 @@ static u8 mv_bmdma_status(struct ata_port *ap)
return status;
}
+static void mv_rw_multi_errata_sata24(struct ata_queued_cmd *qc)
+{
+ struct ata_taskfile *tf = &qc->tf;
+ /*
+ * Workaround for 88SX60x1 FEr SATA#24.
+ *
+ * Chip may corrupt WRITEs if multi_count >= 4kB.
+ * Note that READs are unaffected.
+ *
+ * It's not clear if this errata really means "4K bytes",
+ * or if it always happens for multi_count > 7
+ * regardless of device sector_size.
+ *
+ * So, for safety, any write with multi_count > 7
+ * gets converted here into a regular PIO write instead:
+ */
+ if ((tf->flags & ATA_TFLAG_WRITE) && is_multi_taskfile(tf)) {
+ if (qc->dev->multi_count > 7) {
+ switch (tf->command) {
+ case ATA_CMD_WRITE_MULTI:
+ tf->command = ATA_CMD_PIO_WRITE;
+ break;
+ case ATA_CMD_WRITE_MULTI_FUA_EXT:
+ tf->flags &= ~ATA_TFLAG_FUA; /* ugh */
+ /* fall through */
+ case ATA_CMD_WRITE_MULTI_EXT:
+ tf->command = ATA_CMD_PIO_WRITE_EXT;
+ break;
+ }
+ }
+ }
+}
+
/**
* mv_qc_prep - Host specific command preparation.
* @qc: queued command to prepare
@@ -1898,17 +1945,24 @@ static void mv_qc_prep(struct ata_queued_cmd *qc)
struct ata_port *ap = qc->ap;
struct mv_port_priv *pp = ap->private_data;
__le16 *cw;
- struct ata_taskfile *tf;
+ struct ata_taskfile *tf = &qc->tf;
u16 flags = 0;
unsigned in_index;
- if ((qc->tf.protocol != ATA_PROT_DMA) &&
- (qc->tf.protocol != ATA_PROT_NCQ))
+ switch (tf->protocol) {
+ case ATA_PROT_DMA:
+ case ATA_PROT_NCQ:
+ break; /* continue below */
+ case ATA_PROT_PIO:
+ mv_rw_multi_errata_sata24(qc);
+ return;
+ default:
return;
+ }
/* Fill in command request block
*/
- if (!(qc->tf.flags & ATA_TFLAG_WRITE))
+ if (!(tf->flags & ATA_TFLAG_WRITE))
flags |= CRQB_FLAG_READ;
WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
flags |= qc->tag << CRQB_TAG_SHIFT;
@@ -1924,7 +1978,6 @@ static void mv_qc_prep(struct ata_queued_cmd *qc)
pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
cw = &pp->crqb[in_index].ata_cmd[0];
- tf = &qc->tf;
/* Sadly, the CRQB cannot accomodate all registers--there are
* only 11 bytes...so we must pick and choose required
@@ -1990,16 +2043,16 @@ static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
struct ata_port *ap = qc->ap;
struct mv_port_priv *pp = ap->private_data;
struct mv_crqb_iie *crqb;
- struct ata_taskfile *tf;
+ struct ata_taskfile *tf = &qc->tf;
unsigned in_index;
u32 flags = 0;
- if ((qc->tf.protocol != ATA_PROT_DMA) &&
- (qc->tf.protocol != ATA_PROT_NCQ))
+ if ((tf->protocol != ATA_PROT_DMA) &&
+ (tf->protocol != ATA_PROT_NCQ))
return;
/* Fill in Gen IIE command request block */
- if (!(qc->tf.flags & ATA_TFLAG_WRITE))
+ if (!(tf->flags & ATA_TFLAG_WRITE))
flags |= CRQB_FLAG_READ;
WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
@@ -2015,7 +2068,6 @@ static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
crqb->flags = cpu_to_le32(flags);
- tf = &qc->tf;
crqb->ata_cmd[0] = cpu_to_le32(
(tf->command << 16) |
(tf->feature << 24)
@@ -3359,6 +3411,53 @@ static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio)
return;
}
+static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv,
+ void __iomem *mmio, unsigned int port)
+{
+ void __iomem *port_mmio = mv_port_base(mmio, port);
+ u32 reg;
+
+ reg = readl(port_mmio + PHY_MODE3);
+ reg &= ~(0x3 << 27); /* SELMUPF (bits 28:27) to 1 */
+ reg |= (0x1 << 27);
+ reg &= ~(0x3 << 29); /* SELMUPI (bits 30:29) to 1 */
+ reg |= (0x1 << 29);
+ writel(reg, port_mmio + PHY_MODE3);
+
+ reg = readl(port_mmio + PHY_MODE4);
+ reg &= ~0x1; /* SATU_OD8 (bit 0) to 0, reserved bit 16 must be set */
+ reg |= (0x1 << 16);
+ writel(reg, port_mmio + PHY_MODE4);
+
+ reg = readl(port_mmio + PHY_MODE9_GEN2);
+ reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */
+ reg |= 0x8;
+ reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */
+ writel(reg, port_mmio + PHY_MODE9_GEN2);
+
+ reg = readl(port_mmio + PHY_MODE9_GEN1);
+ reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */
+ reg |= 0x8;
+ reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */
+ writel(reg, port_mmio + PHY_MODE9_GEN1);
+}
+
+/**
+ * soc_is_65 - check if the soc is 65 nano device
+ *
+ * Detect the type of the SoC, this is done by reading the PHYCFG_OFS
+ * register, this register should contain non-zero value and it exists only
+ * in the 65 nano devices, when reading it from older devices we get 0.
+ */
+static bool soc_is_65n(struct mv_host_priv *hpriv)
+{
+ void __iomem *port0_mmio = mv_port_base(hpriv->base, 0);
+
+ if (readl(port0_mmio + PHYCFG_OFS))
+ return true;
+ return false;
+}
+
static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i)
{
u32 ifcfg = readl(port_mmio + SATA_IFCFG);
@@ -3699,7 +3798,10 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
}
break;
case chip_soc:
- hpriv->ops = &mv_soc_ops;
+ if (soc_is_65n(hpriv))
+ hpriv->ops = &mv_soc_65n_ops;
+ else
+ hpriv->ops = &mv_soc_ops;
hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE |
MV_HP_ERRATA_60X1C0;
break;
@@ -3762,7 +3864,8 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
n_hc = mv_get_hc_count(host->ports[0]->flags);
for (port = 0; port < host->n_ports; port++)
- hpriv->ops->read_preamp(hpriv, port, mmio);
+ if (hpriv->ops->read_preamp)
+ hpriv->ops->read_preamp(hpriv, port, mmio);
rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
if (rc)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 12:45:34 +0000