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scsi: hisi_sas: add readl poll timeout helper wrappers 

It is common to use readl poll timeout helpers in the driver, so create
custom wrappers.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2018-05-02 23:56:33 +08:00 committed by Martin K. Petersen
parent bf081d5da4
commit 9b8addf302
1 changed files with 22 additions and 6 deletions
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26
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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@ -394,6 +394,20 @@ static u32 hisi_sas_phy_read32(struct hisi_hba *hisi_hba,
return readl(regs); return readl(regs);
} }
#define hisi_sas_read32_poll_timeout(off, val, cond, delay_us, \
timeout_us) \
({ \
void __iomem *regs = hisi_hba->regs + off; \
readl_poll_timeout(regs, val, cond, delay_us, timeout_us); \
})
#define hisi_sas_read32_poll_timeout_atomic(off, val, cond, delay_us, \
timeout_us) \
({ \
void __iomem *regs = hisi_hba->regs + off; \
readl_poll_timeout_atomic(regs, val, cond, delay_us, timeout_us);\
})
static void init_reg_v3_hw(struct hisi_hba *hisi_hba) static void init_reg_v3_hw(struct hisi_hba *hisi_hba)
{ {
struct pci_dev *pdev = hisi_hba->pci_dev; struct pci_dev *pdev = hisi_hba->pci_dev;
@ -684,7 +698,7 @@ static int reset_hw_v3_hw(struct hisi_hba *hisi_hba)
udelay(50); udelay(50);
/* Ensure axi bus idle */ /* Ensure axi bus idle */
ret = readl_poll_timeout(hisi_hba->regs + AXI_CFG, val, !val, ret = hisi_sas_read32_poll_timeout(AXI_CFG, val, !val,
20000, 1000000); 20000, 1000000);
if (ret) { if (ret) {
dev_err(dev, "axi bus is not idle, ret = %d!\n", ret); dev_err(dev, "axi bus is not idle, ret = %d!\n", ret);
@ -1977,8 +1991,9 @@ static int soft_reset_v3_hw(struct hisi_hba *hisi_hba)
hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + AM_CTRL_GLOBAL, 0x1); hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + AM_CTRL_GLOBAL, 0x1);
/* wait until bus idle */ /* wait until bus idle */
rc = readl_poll_timeout(hisi_hba->regs + AXI_MASTER_CFG_BASE + rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE +
AM_CURR_TRANS_RETURN, status, status == 0x3, 10, 100); AM_CURR_TRANS_RETURN, status,
status == 0x3, 10, 100);
if (rc) { if (rc) {
dev_err(dev, "axi bus is not idle, rc = %d\n", rc); dev_err(dev, "axi bus is not idle, rc = %d\n", rc);
return rc; return rc;
@ -2396,8 +2411,9 @@ static int hisi_sas_v3_suspend(struct pci_dev *pdev, pm_message_t state)
AM_CTRL_GLOBAL, reg_val); AM_CTRL_GLOBAL, reg_val);
/* wait until bus idle */ /* wait until bus idle */
rc = readl_poll_timeout(hisi_hba->regs + AXI_MASTER_CFG_BASE + rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE +
AM_CURR_TRANS_RETURN, status, status == 0x3, 10, 100); AM_CURR_TRANS_RETURN, status,
status == 0x3, 10, 100);
if (rc) { if (rc) {
dev_err(dev, "axi bus is not idle, rc = %d\n", rc); dev_err(dev, "axi bus is not idle, rc = %d\n", rc);
clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);