From 70bfdcae13c33b0a6277566727244949d91cbe72 Mon Sep 17 00:00:00 2001 From: John Garry Date: Wed, 2 May 2018 23:56:33 +0800 Subject: [PATCH] scsi: hisi_sas: add readl poll timeout helper wrappers BugLink: https://bugs.launchpad.net/bugs/1774467 It is common to use readl poll timeout helpers in the driver, so create custom wrappers. Signed-off-by: John Garry Signed-off-by: Martin K. Petersen (cherry picked from commit 9b8addf3024eb57a215d0af2e1c95cd44b94ccab linux-next) [ dannf: Included only as a dependency for the next patch ] Signed-off-by: dann frazier Acked-by: Stefan Bader Acked-by: Kleber Sacilotto de Souza Signed-off-by: Khalid Elmously --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 28 ++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 5d919778fff9..2fd09b101120 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -394,6 +394,20 @@ static u32 hisi_sas_phy_read32(struct hisi_hba *hisi_hba, 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) { struct pci_dev *pdev = hisi_hba->pci_dev; @@ -684,8 +698,8 @@ static int reset_hw_v3_hw(struct hisi_hba *hisi_hba) udelay(50); /* Ensure axi bus idle */ - ret = readl_poll_timeout(hisi_hba->regs + AXI_CFG, val, !val, - 20000, 1000000); + ret = hisi_sas_read32_poll_timeout(AXI_CFG, val, !val, + 20000, 1000000); if (ret) { dev_err(dev, "axi bus is not idle, ret = %d!\n", ret); return -EIO; @@ -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); /* wait until bus idle */ - rc = readl_poll_timeout(hisi_hba->regs + AXI_MASTER_CFG_BASE + - AM_CURR_TRANS_RETURN, status, status == 0x3, 10, 100); + rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE + + AM_CURR_TRANS_RETURN, status, + status == 0x3, 10, 100); if (rc) { dev_err(dev, "axi bus is not idle, rc = %d\n", rc); return rc; @@ -2398,8 +2413,9 @@ static int hisi_sas_v3_suspend(struct pci_dev *pdev, pm_message_t state) AM_CTRL_GLOBAL, reg_val); /* wait until bus idle */ - rc = readl_poll_timeout(hisi_hba->regs + AXI_MASTER_CFG_BASE + - AM_CURR_TRANS_RETURN, status, status == 0x3, 10, 100); + rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE + + AM_CURR_TRANS_RETURN, status, + status == 0x3, 10, 100); if (rc) { dev_err(dev, "axi bus is not idle, rc = %d\n", rc); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); -- 2.39.2