rockchip-[current,edge]: add pcie hack and lsi scsi/sas support (#3351)

* build: kernel: rockchip64-[current,edge]: add pcie bus scan delay patches

These are needed for cards like the LSI SAS2008 which needs a little
extra time to initialize or they'll cause a kernel panic.

References:
https://gitlab.manjaro.org/manjaro-arm/packages/core/linux/-/blob/master/0013-rk3399-rp64-pcie-Reimplement-rockchip-PCIe-bus-scan-delay.patch
https://gitlab.manjaro.org/manjaro-arm/packages/core/linux/-/blob/master/0022-arm64-dts-rockchip-Add-pcie-bus-scan-delay-to-rockpr.patch

* config: linux-rockchip64-[current,edge]: enable lsi sata/sas support
This commit is contained in:
Dan Pasanen 2021-12-16 04:17:33 -06:00 committed by GitHub
parent e11af914a2
commit 7be9e8b995
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 246 additions and 6 deletions

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@ -2281,7 +2281,7 @@ CONFIG_HABANA_AI=m
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_PROC_FS is not set
@ -2336,8 +2336,10 @@ CONFIG_SCSI_HISI_SAS=y
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
# CONFIG_SCSI_MPT3SAS is not set
# CONFIG_SCSI_MPT2SAS is not set
CONFIG_SCSI_MPT3SAS=m
CONFIG_SCSI_MPT2SAS_MAX_SGE=128
CONFIG_SCSI_MPT3SAS_MAX_SGE=128
CONFIG_SCSI_MPT2SAS=m
# CONFIG_SCSI_SMARTPQI is not set
# CONFIG_SCSI_UFSHCD is not set
# CONFIG_SCSI_HPTIOP is not set

View File

@ -2377,7 +2377,7 @@ CONFIG_HABANA_AI=m
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_RAID_ATTRS=m
CONFIG_SCSI_COMMON=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
@ -2435,8 +2435,10 @@ CONFIG_SCSI_HISI_SAS=y
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
# CONFIG_SCSI_MPT3SAS is not set
# CONFIG_SCSI_MPT2SAS is not set
CONFIG_SCSI_MPT3SAS=m
CONFIG_SCSI_MPT2SAS_MAX_SGE=128
CONFIG_SCSI_MPT3SAS_MAX_SGE=128
CONFIG_SCSI_MPT2SAS=m
CONFIG_SCSI_MPI3MR=m
# CONFIG_SCSI_SMARTPQI is not set
# CONFIG_SCSI_UFSHCD is not set

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@ -0,0 +1,12 @@
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
index bfd57f6f0..5374753cd 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
@@ -579,6 +579,7 @@ &pcie0 {
pinctrl-0 = <&pcie_perst>;
vpcie12v-supply = <&vcc12v_dcin>;
vpcie3v3-supply = <&vcc3v3_pcie>;
+ bus-scan-delay-ms = <1000>;
status = "okay";
};

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@ -0,0 +1,106 @@
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 1396fd2d9..4d583446c 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4079,6 +4079,14 @@
nomsi Do not use MSI for native PCIe PME signaling (this makes
all PCIe root ports use INTx for all services).
+ pcie_rockchip_host.bus_scan_delay= [PCIE] Delay in ms before
+ scanning PCIe bus in Rockchip PCIe host driver. Some PCIe
+ cards seem to need delays that can be several hundred ms.
+ If set to greater than or equal to 0 this parameter will
+ override delay that can be set in device tree.
+ Values less than 0 mean that this parameter is ignored.
+ default=-1
+
pcmv= [HW,PCMCIA] BadgePAD 4
pd_ignore_unused
diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index c52316d0b..a7974007d 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_pci.h>
@@ -39,6 +40,9 @@
#include "../pci.h"
#include "pcie-rockchip.h"
+static int bus_scan_delay = -1;
+module_param_named(bus_scan_delay, bus_scan_delay, int, S_IRUGO);
+
static void rockchip_pcie_enable_bw_int(struct rockchip_pcie *rockchip)
{
u32 status;
@@ -935,6 +939,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct pci_host_bridge *bridge;
int err;
+ u32 delay = 0;
if (!dev->of_node)
return -ENODEV;
@@ -984,6 +989,26 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
bridge->sysdata = rockchip;
bridge->ops = &rockchip_pcie_ops;
+ /* Checking if bus scan delay was given from command line and prefer
+ * that over the value in device tree (which defaults to 0 if not set).
+ */
+ if (bus_scan_delay >= 0) {
+ delay = bus_scan_delay;
+ dev_info(dev, "wait %u ms (from command-line) before bus scan\n", delay);
+ } else {
+ delay = rockchip->bus_scan_delay;
+ dev_info(dev, "wait %u ms (from device tree) before bus scan\n", delay);
+ }
+ /* Workaround for some devices crashing on pci_host_probe / pci_scan_root_bus_bridge
+ * calls: sleep a bit before bus scan. Call trace gets to rockchip_pcie_rd_conf when
+ * trying to read vendor id (pci_bus_generic_read_dev_vendor_id is in call stack)
+ * before panicing. I have no idea why this works or what causes the panic. I just
+ * found this hack by luck when trying to "make it break differently if possible".
+ */
+ if (delay > 0) {
+ msleep(delay);
+ }
+
err = rockchip_pcie_setup_irq(rockchip);
if (err)
goto err_remove_irq_domain;
diff --git a/drivers/pci/controller/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
index 193d26562..ec6cbaadd 100644
--- a/drivers/pci/controller/pcie-rockchip.c
+++ b/drivers/pci/controller/pcie-rockchip.c
@@ -148,6 +148,12 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
return PTR_ERR(rockchip->clk_pcie_pm);
}
+ err = of_property_read_u32(node, "bus-scan-delay-ms", &rockchip->bus_scan_delay);
+ if (err) {
+ dev_info(dev, "no bus scan delay, default to 0 ms\n");
+ rockchip->bus_scan_delay = 0;
+ }
+
return 0;
}
EXPORT_SYMBOL_GPL(rockchip_pcie_parse_dt);
diff --git a/drivers/pci/controller/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h
index 1650a5087..35a8cf157 100644
--- a/drivers/pci/controller/pcie-rockchip.h
+++ b/drivers/pci/controller/pcie-rockchip.h
@@ -300,6 +300,8 @@ struct rockchip_pcie {
phys_addr_t msg_bus_addr;
bool is_rc;
struct resource *mem_res;
+ /* Bus scan delay is a workaround for some pcie devices causing crashes */
+ u32 bus_scan_delay;
};
static u32 rockchip_pcie_read(struct rockchip_pcie *rockchip, u32 reg)

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@ -0,0 +1,12 @@
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
index bfd57f6f0..5374753cd 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
@@ -579,6 +579,7 @@ &pcie0 {
pinctrl-0 = <&pcie_perst>;
vpcie12v-supply = <&vcc12v_dcin>;
vpcie3v3-supply = <&vcc3v3_pcie>;
+ bus-scan-delay-ms = <1000>;
status = "okay";
};

View File

@ -0,0 +1,106 @@
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 1396fd2d9..4d583446c 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4079,6 +4079,14 @@
nomsi Do not use MSI for native PCIe PME signaling (this makes
all PCIe root ports use INTx for all services).
+ pcie_rockchip_host.bus_scan_delay= [PCIE] Delay in ms before
+ scanning PCIe bus in Rockchip PCIe host driver. Some PCIe
+ cards seem to need delays that can be several hundred ms.
+ If set to greater than or equal to 0 this parameter will
+ override delay that can be set in device tree.
+ Values less than 0 mean that this parameter is ignored.
+ default=-1
+
pcmv= [HW,PCMCIA] BadgePAD 4
pd_ignore_unused
diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index c52316d0b..a7974007d 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_pci.h>
@@ -39,6 +40,9 @@
#include "../pci.h"
#include "pcie-rockchip.h"
+static int bus_scan_delay = -1;
+module_param_named(bus_scan_delay, bus_scan_delay, int, S_IRUGO);
+
static void rockchip_pcie_enable_bw_int(struct rockchip_pcie *rockchip)
{
u32 status;
@@ -935,6 +939,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct pci_host_bridge *bridge;
int err;
+ u32 delay = 0;
if (!dev->of_node)
return -ENODEV;
@@ -984,6 +989,26 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
bridge->sysdata = rockchip;
bridge->ops = &rockchip_pcie_ops;
+ /* Checking if bus scan delay was given from command line and prefer
+ * that over the value in device tree (which defaults to 0 if not set).
+ */
+ if (bus_scan_delay >= 0) {
+ delay = bus_scan_delay;
+ dev_info(dev, "wait %u ms (from command-line) before bus scan\n", delay);
+ } else {
+ delay = rockchip->bus_scan_delay;
+ dev_info(dev, "wait %u ms (from device tree) before bus scan\n", delay);
+ }
+ /* Workaround for some devices crashing on pci_host_probe / pci_scan_root_bus_bridge
+ * calls: sleep a bit before bus scan. Call trace gets to rockchip_pcie_rd_conf when
+ * trying to read vendor id (pci_bus_generic_read_dev_vendor_id is in call stack)
+ * before panicing. I have no idea why this works or what causes the panic. I just
+ * found this hack by luck when trying to "make it break differently if possible".
+ */
+ if (delay > 0) {
+ msleep(delay);
+ }
+
err = rockchip_pcie_setup_irq(rockchip);
if (err)
goto err_remove_irq_domain;
diff --git a/drivers/pci/controller/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
index 193d26562..ec6cbaadd 100644
--- a/drivers/pci/controller/pcie-rockchip.c
+++ b/drivers/pci/controller/pcie-rockchip.c
@@ -148,6 +148,12 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
return PTR_ERR(rockchip->clk_pcie_pm);
}
+ err = of_property_read_u32(node, "bus-scan-delay-ms", &rockchip->bus_scan_delay);
+ if (err) {
+ dev_info(dev, "no bus scan delay, default to 0 ms\n");
+ rockchip->bus_scan_delay = 0;
+ }
+
return 0;
}
EXPORT_SYMBOL_GPL(rockchip_pcie_parse_dt);
diff --git a/drivers/pci/controller/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h
index 1650a5087..35a8cf157 100644
--- a/drivers/pci/controller/pcie-rockchip.h
+++ b/drivers/pci/controller/pcie-rockchip.h
@@ -300,6 +300,8 @@ struct rockchip_pcie {
phys_addr_t msg_bus_addr;
bool is_rc;
struct resource *mem_res;
+ /* Bus scan delay is a workaround for some pcie devices causing crashes */
+ u32 bus_scan_delay;
};
static u32 rockchip_pcie_read(struct rockchip_pcie *rockchip, u32 reg)