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[PATCH] phy: usb: fix Broadcom driver table indexing error

Sam Edwards posted 1 patch 1 month, 3 weeks ago 
drivers/phy/broadcom/phy-brcm-usb-init.c | 433 +++++++++++------------
1 file changed, 215 insertions(+), 218 deletions(-)
[PATCH] phy: usb: fix Broadcom driver table indexing error
Posted by Sam Edwards 1 month, 3 weeks ago 
The Broadcom USB PHY driver contains a lookup table
(`reg_bits_map_tables`) to resolve register bitmaps unique to certain
versions of the USB PHY as found in various Broadcom chip families.
Historically, this table was just kept carefully in sync with the
"selector" enum every time the latter changed to ensure consistency.
However, a recent commit (see 'fixes' tag) introduced two new
enumerators but did not adjust the array for BCM4908, thus breaking the
xHCI controller (and boot process) on this platform and revealing the
fragility of this approach.

Since these arrays are a little sparse (many elements are zero) and the
position of the array elements is significant only insofar as they agree
with the enumerators, designated initializers are a better fit than
positional initializers here. Convert this table accordingly, fixing the
boot-time crash on BCM4908 in the process.

Fixes: 4536fe9640b6 ("phy: usb: suppress OC condition for 7439b2")
Signed-off-by: Sam Edwards <CFSworks@gmail.com>
---
 drivers/phy/broadcom/phy-brcm-usb-init.c | 433 +++++++++++------------
 1 file changed, 215 insertions(+), 218 deletions(-)

diff --git a/drivers/phy/broadcom/phy-brcm-usb-init.c b/drivers/phy/broadcom/phy-brcm-usb-init.c
index 39536b6d96a9..da23078878a9 100644
--- a/drivers/phy/broadcom/phy-brcm-usb-init.c
+++ b/drivers/phy/broadcom/phy-brcm-usb-init.c
@@ -193,254 +193,251 @@ static const u32
 usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
 	/* 3390B0 */
 	[BRCM_FAMILY_3390A0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
+		[USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_SELECTOR] =
+			USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 4908 */
 	[BRCM_FAMILY_4908] = {
-		0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
-		0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
-		0, /* USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
-		0, /* USB_CTRL_SETUP_OC3_DISABLE_MASK */
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		0, /* USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK */
-		0, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
 	},
 	/* 7250b0 */
 	[BRCM_FAMILY_7250B0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
-		0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_SELECTOR] =
+			USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7271a0 */
 	[BRCM_FAMILY_7271A0] = {
-		0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
-		0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
-		USB_CTRL_USB_PM_SOFT_RESET_MASK,
-		USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK,
-		USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK,
-		USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_USB_PM_BDC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
+		[USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_SELECTOR] =
+			USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
+		[USB_CTRL_USB_PM_SOFT_RESET_SELECTOR] =
+			USB_CTRL_USB_PM_SOFT_RESET_MASK,
+		[USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_SELECTOR] =
+			USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK,
+		[USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7364a0 */
 	[BRCM_FAMILY_7364A0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
-		0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_SELECTOR] =
+			USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7366c0 */
 	[BRCM_FAMILY_7366C0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 74371A0 */
 	[BRCM_FAMILY_74371A0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
-		0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
-		0, /* USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK */
-		0, /* USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK */
-		0, /* USB_CTRL_SETUP_OC3_DISABLE_MASK */
-		USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
-		USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB30_CTL1_USB3_IOC_MASK,
-		USB_CTRL_USB30_CTL1_USB3_IPP_MASK,
-		0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		0, /* USB_CTRL_USB_PM_USB20_HC_RESETB_MASK */
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
+		[USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_SELECTOR] =
+			USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
+		[USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB30_CTL1_USB3_IOC_SELECTOR] =
+			USB_CTRL_USB30_CTL1_USB3_IOC_MASK,
+		[USB_CTRL_USB30_CTL1_USB3_IPP_SELECTOR] =
+			USB_CTRL_USB30_CTL1_USB3_IPP_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7439B0 */
 	[BRCM_FAMILY_7439B0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_USB_PM_BDC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
+		[USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_SELECTOR] =
+			USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7445d0 */
 	[BRCM_FAMILY_7445D0] = {
-		USB_CTRL_SETUP_SCB1_EN_MASK,
-		USB_CTRL_SETUP_SCB2_EN_MASK,
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
-		0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
-		0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
-		USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK,
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
-		0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SCB1_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB1_EN_MASK,
+		[USB_CTRL_SETUP_SCB2_EN_SELECTOR] =
+			USB_CTRL_SETUP_SCB2_EN_MASK,
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_SELECTOR] =
+			USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
+		[USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7260a0 */
 	[BRCM_FAMILY_7260A0] = {
-		0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
-		0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
-		USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
-		USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
-		USB_CTRL_USB_PM_SOFT_RESET_MASK,
-		USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK,
-		USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK,
-		USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
-		ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR] =
+			USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
+		[USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_USB_PM_BDC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
+		[USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_SELECTOR] =
+			USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
+		[USB_CTRL_USB_PM_SOFT_RESET_SELECTOR] =
+			USB_CTRL_USB_PM_SOFT_RESET_MASK,
+		[USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_SELECTOR] =
+			USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK,
+		[USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK,
+		[USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
+		[USB_CTRL_SETUP_ENDIAN_SELECTOR] = ENDIAN_SETTINGS,
 	},
 	/* 7278a0 */
 	[BRCM_FAMILY_7278A0] = {
-		0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
-		0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
-		0, /*USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK */
-		USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
-		USB_CTRL_SETUP_OC3_DISABLE_MASK,
-		0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
-		USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
-		USB_CTRL_USB_PM_USB_PWRDN_MASK,
-		0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
-		0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
-		USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
-		USB_CTRL_USB_PM_SOFT_RESET_MASK,
-		0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
-		0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
-		0, /* USB_CTRL_USB_PM_USB20_HC_RESETB_MASK */
-		0, /* USB_CTRL_SETUP ENDIAN bits */
+		[USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR] =
+			USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
+		[USB_CTRL_SETUP_OC3_DISABLE_SELECTOR] =
+			USB_CTRL_SETUP_OC3_DISABLE_MASK,
+		[USB_CTRL_USB_PM_BDC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR] =
+			USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
+		[USB_CTRL_USB_PM_USB_PWRDN_SELECTOR] =
+			USB_CTRL_USB_PM_USB_PWRDN_MASK,
+		[USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_SELECTOR] =
+			USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
+		[USB_CTRL_USB_PM_SOFT_RESET_SELECTOR] =
+			USB_CTRL_USB_PM_SOFT_RESET_MASK,
 	},
 };
 
-- 
2.44.2
Re: [PATCH] phy: usb: fix Broadcom driver table indexing error
Posted by Florian Fainelli 1 month, 3 weeks ago 
On 10/3/24 14:17, Sam Edwards wrote:
> The Broadcom USB PHY driver contains a lookup table
> (`reg_bits_map_tables`) to resolve register bitmaps unique to certain
> versions of the USB PHY as found in various Broadcom chip families.
> Historically, this table was just kept carefully in sync with the
> "selector" enum every time the latter changed to ensure consistency.
> However, a recent commit (see 'fixes' tag) introduced two new
> enumerators but did not adjust the array for BCM4908, thus breaking the
> xHCI controller (and boot process) on this platform and revealing the
> fragility of this approach.
> 
> Since these arrays are a little sparse (many elements are zero) and the
> position of the array elements is significant only insofar as they agree
> with the enumerators, designated initializers are a better fit than
> positional initializers here. Convert this table accordingly, fixing the
> boot-time crash on BCM4908 in the process.
> 
> Fixes: 4536fe9640b6 ("phy: usb: suppress OC condition for 7439b2")
> Signed-off-by: Sam Edwards <CFSworks@gmail.com>

Thanks a bunch for the fix, good catch! Sorry to ask you this, but since 
this is intended to be backported to stable trees at some point, would 
you mind breaking this up in two commits:

- one which is easy to review and audit and which adjusts the BCM4908 entry
- another one which converts to using designated index constants?

Thanks!
-- 
Florian
Re: [PATCH] phy: usb: fix Broadcom driver table indexing error
Posted by Sam Edwards 1 month, 3 weeks ago 
On Thu, Oct 3, 2024 at 3:47 PM Florian Fainelli
<florian.fainelli@broadcom.com> wrote:
>
> On 10/3/24 14:17, Sam Edwards wrote:
> > The Broadcom USB PHY driver contains a lookup table
> > (`reg_bits_map_tables`) to resolve register bitmaps unique to certain
> > versions of the USB PHY as found in various Broadcom chip families.
> > Historically, this table was just kept carefully in sync with the
> > "selector" enum every time the latter changed to ensure consistency.
> > However, a recent commit (see 'fixes' tag) introduced two new
> > enumerators but did not adjust the array for BCM4908, thus breaking the
> > xHCI controller (and boot process) on this platform and revealing the
> > fragility of this approach.
> >
> > Since these arrays are a little sparse (many elements are zero) and the
> > position of the array elements is significant only insofar as they agree
> > with the enumerators, designated initializers are a better fit than
> > positional initializers here. Convert this table accordingly, fixing the
> > boot-time crash on BCM4908 in the process.
> >
> > Fixes: 4536fe9640b6 ("phy: usb: suppress OC condition for 7439b2")
> > Signed-off-by: Sam Edwards <CFSworks@gmail.com>

Hi Florian,

>
> Thanks a bunch for the fix, good catch! Sorry to ask you this, but since
> this is intended to be backported to stable trees at some point, would
> you mind breaking this up in two commits:
>
> - one which is easy to review and audit and which adjusts the BCM4908 entry
> - another one which converts to using designated index constants?

Not a problem at all! I'd much rather address feedback like this
myself so I can practice the proper formatting than have you take care
of it. I'll send a split-up v2 in a moment. :)

Kind regards,
Sam

>
> Thanks!
> --
> Florian

Patchew 2.1-devel-b67e4c2

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