diff options
| author | Manivannan Sadhasivam | 2023-03-14 13:34:42 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-17 11:53:28 +0200 |
| commit | bf9712195f5e14e5514ae7686f042e5981ece16b (patch) | |
| tree | 5e7f0b76d63a0ccca8dc421bf98018eb064d9d59 /drivers/edac | |
| parent | 4fdb257b2a4c6dc1e2708ef5e00ebd78637bd20c (diff) | |
qcom: llcc/edac: Support polling mode for ECC handling
[ Upstream commit 721d3e91bfc93975c5e1a76c7d588dd8df5d82da ]
Not all Qcom platforms support IRQ mode for ECC handling. For those
platforms, the current EDAC driver will not be probed due to missing ECC
IRQ in devicetree.
So add support for polling mode so that the EDAC driver can be used on all
Qcom platforms supporting LLCC.
The polling delay of 5000ms is chosen based on Qcom downstream/vendor
driver.
Reported-by: Luca Weiss <luca.weiss@fairphone.com>
Tested-by: Luca Weiss <luca.weiss@fairphone.com>
Tested-by: Steev Klimaszewski <steev@kali.org> # Thinkpad X13s
Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8540p-ride
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230314080443.64635-14-manivannan.sadhasivam@linaro.org
Stable-dep-of: cca94f1dd6d0 ("soc: qcom: llcc: Do not create EDAC platform device on SDM845")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/qcom_edac.c | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/drivers/edac/qcom_edac.c b/drivers/edac/qcom_edac.c index c45519f59dc1..2c91ceff8a9c 100644 --- a/drivers/edac/qcom_edac.c +++ b/drivers/edac/qcom_edac.c @@ -76,6 +76,8 @@ #define DRP0_INTERRUPT_ENABLE BIT(6) #define SB_DB_DRP_INTERRUPT_ENABLE 0x3 +#define ECC_POLL_MSEC 5000 + enum { LLCC_DRAM_CE = 0, LLCC_DRAM_UE, @@ -285,8 +287,7 @@ dump_syn_reg(struct edac_device_ctl_info *edev_ctl, int err_type, u32 bank) return ret; } -static irqreturn_t -llcc_ecc_irq_handler(int irq, void *edev_ctl) +static irqreturn_t llcc_ecc_irq_handler(int irq, void *edev_ctl) { struct edac_device_ctl_info *edac_dev_ctl = edev_ctl; struct llcc_drv_data *drv = edac_dev_ctl->dev->platform_data; @@ -332,6 +333,11 @@ llcc_ecc_irq_handler(int irq, void *edev_ctl) return irq_rc; } +static void llcc_ecc_check(struct edac_device_ctl_info *edev_ctl) +{ + llcc_ecc_irq_handler(0, edev_ctl); +} + static int qcom_llcc_edac_probe(struct platform_device *pdev) { struct llcc_drv_data *llcc_driv_data = pdev->dev.platform_data; @@ -359,29 +365,31 @@ static int qcom_llcc_edac_probe(struct platform_device *pdev) edev_ctl->ctl_name = "llcc"; edev_ctl->panic_on_ue = LLCC_ERP_PANIC_ON_UE; - rc = edac_device_add_device(edev_ctl); - if (rc) - goto out_mem; - - platform_set_drvdata(pdev, edev_ctl); - - /* Request for ecc irq */ + /* Check if LLCC driver has passed ECC IRQ */ ecc_irq = llcc_driv_data->ecc_irq; - if (ecc_irq < 0) { - rc = -ENODEV; - goto out_dev; - } - rc = devm_request_irq(dev, ecc_irq, llcc_ecc_irq_handler, + if (ecc_irq > 0) { + /* Use interrupt mode if IRQ is available */ + rc = devm_request_irq(dev, ecc_irq, llcc_ecc_irq_handler, IRQF_TRIGGER_HIGH, "llcc_ecc", edev_ctl); - if (rc) - goto out_dev; + if (!rc) { + edac_op_state = EDAC_OPSTATE_INT; + goto irq_done; + } + } - return rc; + /* Fall back to polling mode otherwise */ + edev_ctl->poll_msec = ECC_POLL_MSEC; + edev_ctl->edac_check = llcc_ecc_check; + edac_op_state = EDAC_OPSTATE_POLL; -out_dev: - edac_device_del_device(edev_ctl->dev); -out_mem: - edac_device_free_ctl_info(edev_ctl); +irq_done: + rc = edac_device_add_device(edev_ctl); + if (rc) { + edac_device_free_ctl_info(edev_ctl); + return rc; + } + + platform_set_drvdata(pdev, edev_ctl); return rc; } |