hisi_sas: add v2 hw init

Add code to initialise the hardware.

Support is also added to deal with the "am-max-transmissions" (amt)
limitation in hip06 controller #1. This is how many connection requests
we can send on the system bus before waiting for a response.  Due to
chip bus design, controller #1 is limited to 32 amt, while, by design, a
controller supports 64.  The default value for the nibbles in the
relevant registers is 0x40; these need to be programmed with 0x20.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2016-01-26 02:47:09 +08:00 committed by Martin K. Petersen
parent 45c901b848
commit 94eac9e1ab

View File

@ -249,7 +249,295 @@
#define ITCT_HDR_RTOLT_OFF 48
#define ITCT_HDR_RTOLT_MSK (0xffffULL << ITCT_HDR_RTOLT_OFF)
struct hisi_sas_complete_v2_hdr {
__le32 dw0;
__le32 dw1;
__le32 act;
__le32 dw3;
};
#define HISI_SAS_COMMAND_ENTRIES_V2_HW 4096
static u32 hisi_sas_read32(struct hisi_hba *hisi_hba, u32 off)
{
void __iomem *regs = hisi_hba->regs + off;
return readl(regs);
}
static void hisi_sas_write32(struct hisi_hba *hisi_hba, u32 off, u32 val)
{
void __iomem *regs = hisi_hba->regs + off;
writel(val, regs);
}
static void hisi_sas_phy_write32(struct hisi_hba *hisi_hba, int phy_no,
u32 off, u32 val)
{
void __iomem *regs = hisi_hba->regs + (0x400 * phy_no) + off;
writel(val, regs);
}
static u32 hisi_sas_phy_read32(struct hisi_hba *hisi_hba,
int phy_no, u32 off)
{
void __iomem *regs = hisi_hba->regs + (0x400 * phy_no) + off;
return readl(regs);
}
static int reset_hw_v2_hw(struct hisi_hba *hisi_hba)
{
int i, reset_val;
u32 val;
unsigned long end_time;
struct device *dev = &hisi_hba->pdev->dev;
/* The mask needs to be set depending on the number of phys */
if (hisi_hba->n_phy == 9)
reset_val = 0x1fffff;
else
reset_val = 0x7ffff;
/* Disable all of the DQ */
for (i = 0; i < HISI_SAS_MAX_QUEUES; i++)
hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0);
/* Disable all of the PHYs */
for (i = 0; i < hisi_hba->n_phy; i++) {
u32 phy_cfg = hisi_sas_phy_read32(hisi_hba, i, PHY_CFG);
phy_cfg &= ~PHY_CTRL_RESET_MSK;
hisi_sas_phy_write32(hisi_hba, i, PHY_CFG, phy_cfg);
}
udelay(50);
/* Ensure DMA tx & rx idle */
for (i = 0; i < hisi_hba->n_phy; i++) {
u32 dma_tx_status, dma_rx_status;
end_time = jiffies + msecs_to_jiffies(1000);
while (1) {
dma_tx_status = hisi_sas_phy_read32(hisi_hba, i,
DMA_TX_STATUS);
dma_rx_status = hisi_sas_phy_read32(hisi_hba, i,
DMA_RX_STATUS);
if (!(dma_tx_status & DMA_TX_STATUS_BUSY_MSK) &&
!(dma_rx_status & DMA_RX_STATUS_BUSY_MSK))
break;
msleep(20);
if (time_after(jiffies, end_time))
return -EIO;
}
}
/* Ensure axi bus idle */
end_time = jiffies + msecs_to_jiffies(1000);
while (1) {
u32 axi_status =
hisi_sas_read32(hisi_hba, AXI_CFG);
if (axi_status == 0)
break;
msleep(20);
if (time_after(jiffies, end_time))
return -EIO;
}
/* reset and disable clock*/
regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_reset_reg,
reset_val);
regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_clock_ena_reg + 4,
reset_val);
msleep(1);
regmap_read(hisi_hba->ctrl, hisi_hba->ctrl_reset_sts_reg, &val);
if (reset_val != (val & reset_val)) {
dev_err(dev, "SAS reset fail.\n");
return -EIO;
}
/* De-reset and enable clock*/
regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_reset_reg + 4,
reset_val);
regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_clock_ena_reg,
reset_val);
msleep(1);
regmap_read(hisi_hba->ctrl, hisi_hba->ctrl_reset_sts_reg,
&val);
if (val & reset_val) {
dev_err(dev, "SAS de-reset fail.\n");
return -EIO;
}
return 0;
}
static void init_reg_v2_hw(struct hisi_hba *hisi_hba)
{
struct device *dev = &hisi_hba->pdev->dev;
struct device_node *np = dev->of_node;
int i;
/* Global registers init */
/* Deal with am-max-transmissions quirk */
if (of_get_property(np, "hip06-sas-v2-quirk-amt", NULL)) {
hisi_sas_write32(hisi_hba, AM_CFG_MAX_TRANS, 0x2020);
hisi_sas_write32(hisi_hba, AM_CFG_SINGLE_PORT_MAX_TRANS,
0x2020);
} /* Else, use defaults -> do nothing */
hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE,
(u32)((1ULL << hisi_hba->queue_count) - 1));
hisi_sas_write32(hisi_hba, AXI_USER1, 0xc0000000);
hisi_sas_write32(hisi_hba, AXI_USER2, 0x10000);
hisi_sas_write32(hisi_hba, HGC_SAS_TXFAIL_RETRY_CTRL, 0x108);
hisi_sas_write32(hisi_hba, HGC_SAS_TX_OPEN_FAIL_RETRY_CTRL, 0x7FF);
hisi_sas_write32(hisi_hba, OPENA_WT_CONTI_TIME, 0x1);
hisi_sas_write32(hisi_hba, I_T_NEXUS_LOSS_TIME, 0x1F4);
hisi_sas_write32(hisi_hba, MAX_CON_TIME_LIMIT_TIME, 0x4E20);
hisi_sas_write32(hisi_hba, BUS_INACTIVE_LIMIT_TIME, 0x1);
hisi_sas_write32(hisi_hba, CFG_AGING_TIME, 0x1);
hisi_sas_write32(hisi_hba, HGC_ERR_STAT_EN, 0x1);
hisi_sas_write32(hisi_hba, HGC_GET_ITV_TIME, 0x1);
hisi_sas_write32(hisi_hba, INT_COAL_EN, 0x1);
hisi_sas_write32(hisi_hba, OQ_INT_COAL_TIME, 0x1);
hisi_sas_write32(hisi_hba, OQ_INT_COAL_CNT, 0x1);
hisi_sas_write32(hisi_hba, ENT_INT_COAL_TIME, 0x1);
hisi_sas_write32(hisi_hba, ENT_INT_COAL_CNT, 0x1);
hisi_sas_write32(hisi_hba, OQ_INT_SRC, 0x0);
hisi_sas_write32(hisi_hba, ENT_INT_SRC1, 0xffffffff);
hisi_sas_write32(hisi_hba, ENT_INT_SRC2, 0xffffffff);
hisi_sas_write32(hisi_hba, ENT_INT_SRC3, 0xffffffff);
hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1, 0x7efefefe);
hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK2, 0x7efefefe);
hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, 0x7ffffffe);
hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0xfffff3c0);
for (i = 0; i < hisi_hba->queue_count; i++)
hisi_sas_write32(hisi_hba, OQ0_INT_SRC_MSK+0x4*i, 0);
hisi_sas_write32(hisi_hba, AXI_AHB_CLK_CFG, 1);
hisi_sas_write32(hisi_hba, HYPER_STREAM_ID_EN_CFG, 1);
for (i = 0; i < hisi_hba->n_phy; i++) {
hisi_sas_phy_write32(hisi_hba, i, PROG_PHY_LINK_RATE, 0x855);
hisi_sas_phy_write32(hisi_hba, i, SAS_PHY_CTRL, 0x30b9908);
hisi_sas_phy_write32(hisi_hba, i, SL_TOUT_CFG, 0x7d7d7d7d);
hisi_sas_phy_write32(hisi_hba, i, DONE_RECEIVED_TIME, 0x10);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT0, 0xffffffff);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT1, 0xffffffff);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT2, 0xffffffff);
hisi_sas_phy_write32(hisi_hba, i, RXOP_CHECK_CFG_H, 0x1000);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK, 0xffffffff);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0x8ffffbff);
hisi_sas_phy_write32(hisi_hba, i, SL_CFG, 0x23f801fc);
hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL_RDY_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_NOT_RDY_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_DWS_RESET_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_PHY_ENA_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, SL_RX_BCAST_CHK_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT_COAL_EN, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_OOB_RESTART_MSK, 0x0);
hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL, 0x199B694);
}
for (i = 0; i < hisi_hba->queue_count; i++) {
/* Delivery queue */
hisi_sas_write32(hisi_hba,
DLVRY_Q_0_BASE_ADDR_HI + (i * 0x14),
upper_32_bits(hisi_hba->cmd_hdr_dma[i]));
hisi_sas_write32(hisi_hba, DLVRY_Q_0_BASE_ADDR_LO + (i * 0x14),
lower_32_bits(hisi_hba->cmd_hdr_dma[i]));
hisi_sas_write32(hisi_hba, DLVRY_Q_0_DEPTH + (i * 0x14),
HISI_SAS_QUEUE_SLOTS);
/* Completion queue */
hisi_sas_write32(hisi_hba, COMPL_Q_0_BASE_ADDR_HI + (i * 0x14),
upper_32_bits(hisi_hba->complete_hdr_dma[i]));
hisi_sas_write32(hisi_hba, COMPL_Q_0_BASE_ADDR_LO + (i * 0x14),
lower_32_bits(hisi_hba->complete_hdr_dma[i]));
hisi_sas_write32(hisi_hba, COMPL_Q_0_DEPTH + (i * 0x14),
HISI_SAS_QUEUE_SLOTS);
}
/* itct */
hisi_sas_write32(hisi_hba, ITCT_BASE_ADDR_LO,
lower_32_bits(hisi_hba->itct_dma));
hisi_sas_write32(hisi_hba, ITCT_BASE_ADDR_HI,
upper_32_bits(hisi_hba->itct_dma));
/* iost */
hisi_sas_write32(hisi_hba, IOST_BASE_ADDR_LO,
lower_32_bits(hisi_hba->iost_dma));
hisi_sas_write32(hisi_hba, IOST_BASE_ADDR_HI,
upper_32_bits(hisi_hba->iost_dma));
/* breakpoint */
hisi_sas_write32(hisi_hba, IO_BROKEN_MSG_ADDR_LO,
lower_32_bits(hisi_hba->breakpoint_dma));
hisi_sas_write32(hisi_hba, IO_BROKEN_MSG_ADDR_HI,
upper_32_bits(hisi_hba->breakpoint_dma));
/* SATA broken msg */
hisi_sas_write32(hisi_hba, IO_SATA_BROKEN_MSG_ADDR_LO,
lower_32_bits(hisi_hba->sata_breakpoint_dma));
hisi_sas_write32(hisi_hba, IO_SATA_BROKEN_MSG_ADDR_HI,
upper_32_bits(hisi_hba->sata_breakpoint_dma));
/* SATA initial fis */
hisi_sas_write32(hisi_hba, SATA_INITI_D2H_STORE_ADDR_LO,
lower_32_bits(hisi_hba->initial_fis_dma));
hisi_sas_write32(hisi_hba, SATA_INITI_D2H_STORE_ADDR_HI,
upper_32_bits(hisi_hba->initial_fis_dma));
}
static int hw_init_v2_hw(struct hisi_hba *hisi_hba)
{
struct device *dev = &hisi_hba->pdev->dev;
int rc;
rc = reset_hw_v2_hw(hisi_hba);
if (rc) {
dev_err(dev, "hisi_sas_reset_hw failed, rc=%d", rc);
return rc;
}
msleep(100);
init_reg_v2_hw(hisi_hba);
return 0;
}
static int hisi_sas_v2_init(struct hisi_hba *hisi_hba)
{
int rc;
rc = hw_init_v2_hw(hisi_hba);
if (rc)
return rc;
return 0;
}
static const struct hisi_sas_hw hisi_sas_v2_hw = {
.hw_init = hisi_sas_v2_init,
.max_command_entries = HISI_SAS_COMMAND_ENTRIES_V2_HW,
.complete_hdr_size = sizeof(struct hisi_sas_complete_v2_hdr),
};
static int hisi_sas_v2_probe(struct platform_device *pdev)