diff options
Diffstat (limited to 'src/soc/intel/skylake/elog.c')
| -rw-r--r-- | src/soc/intel/skylake/elog.c | 147 |
1 files changed, 10 insertions, 137 deletions
diff --git a/src/soc/intel/skylake/elog.c b/src/soc/intel/skylake/elog.c index 7a8932b50f..359f3e612a 100644 --- a/src/soc/intel/skylake/elog.c +++ b/src/soc/intel/skylake/elog.c @@ -22,6 +22,7 @@ #include <stdint.h> #include <elog.h> #include <intelblocks/pmclib.h> +#include <intelblocks/xhci.h> #include <soc/pci_devs.h> #include <soc/pm.h> #include <soc/smbus.h> @@ -42,142 +43,13 @@ static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start) #define XHCI_USB3_PORT_STATUS_REG 0x540 #define XHCI_USB2_PORT_NUM 10 #define XHCI_USB3_PORT_NUM 6 -/* Wake on disconnect enable */ -#define XHCI_STATUS_WDE (1 << 26) -/* Wake on connect enable */ -#define XHCI_STATUS_WCE (1 << 25) -/* Port link status change */ -#define XHCI_STATUS_PLC (1 << 22) -/* Connect status change */ -#define XHCI_STATUS_CSC (1 << 17) -/* Port link status */ -#define XHCI_STATUS_PLS_SHIFT (5) -#define XHCI_STATUS_PLS_MASK (0xF << XHCI_STATUS_PLS_SHIFT) -#define XHCI_STATUS_PLS_RESUME (15 << XHCI_STATUS_PLS_SHIFT) - -static bool pch_xhci_csc_set(uint32_t port_status) -{ - return !!(port_status & XHCI_STATUS_CSC); -} - -static bool pch_xhci_wake_capable(uint32_t port_status) -{ - return !!((port_status & XHCI_STATUS_WCE) | - (port_status & XHCI_STATUS_WDE)); -} - -static bool pch_xhci_plc_set(uint32_t port_status) -{ - return !!(port_status & XHCI_STATUS_PLC); -} - -static bool pch_xhci_resume(uint32_t port_status) -{ - return (port_status & XHCI_STATUS_PLS_MASK) == XHCI_STATUS_PLS_RESUME; -} - -/* - * Check if a particular USB port caused wake by: - * 1. Change in connect/disconnect status (if enabled) - * 2. USB device activity - * - * Params: - * base : MMIO address of first port. - * num : Number of ports. - * event : Event that needs to be added in case wake source is found. - * - * Return value: - * true : Wake source was found. - * false : Wake source was not found. - */ -static bool pch_xhci_port_wake_check(uintptr_t base, uint8_t num, - uint32_t event) -{ - uint8_t i; - uint32_t port_status; - bool found = false; - - for (i = 0; i < num; i++, base += 0x10) { - /* Read port status and control register for the port. */ - port_status = read32((void *)base); - - /* Ensure that the status is not all 1s. */ - if (port_status == 0xffffffff) - continue; - - /* - * Check if CSC bit is set and port is capable of wake on - * connect/disconnect to identify if the port caused wake - * event for usb attach/detach. - */ - if (pch_xhci_csc_set(port_status) && - pch_xhci_wake_capable(port_status)) { - elog_add_event_wake(event, i + 1); - found = true; - continue; - } - - /* - * Check if PLC is set and PLS indicates resume to identify if - * the port caused wake event for usb activity. - */ - if (pch_xhci_plc_set(port_status) && - pch_xhci_resume(port_status)) { - elog_add_event_wake(event, i + 1); - found = true; - } - } - return found; -} -/* - * Update elog event and instance depending upon the USB2 port that caused - * the wake event. - * - * Return value: - * true = Indicates that USB2 wake event was found. - * false = Indicates that USB2 wake event was not found. - */ -static inline bool pch_xhci_usb2_update_wake_event(uintptr_t mmio_base) -{ - return pch_xhci_port_wake_check(mmio_base + XHCI_USB2_PORT_STATUS_REG, - XHCI_USB2_PORT_NUM, - ELOG_WAKE_SOURCE_PME_XHCI_USB_2); -} - -/* - * Update elog event and instance depending upon the USB3 port that caused - * the wake event. - * - * Return value: - * true = Indicates that USB3 wake event was found. - * false = Indicates that USB3 wake event was not found. - */ -static inline bool pch_xhci_usb3_update_wake_event(uintptr_t mmio_base) -{ - return pch_xhci_port_wake_check(mmio_base + XHCI_USB3_PORT_STATUS_REG, - XHCI_USB3_PORT_NUM, - ELOG_WAKE_SOURCE_PME_XHCI_USB_3); -} - -#ifdef __SIMPLE_DEVICE__ -static bool pch_xhci_update_wake_event(pci_devfn_t dev) -#else -static bool pch_xhci_update_wake_event(struct device *dev) -#endif -{ - uintptr_t mmio_base; - bool event_found = false; - mmio_base = ALIGN_DOWN(pci_read_config32(dev, PCI_BASE_ADDRESS_0), 16); - - if (pch_xhci_usb2_update_wake_event(mmio_base)) - event_found = true; - - if (pch_xhci_usb3_update_wake_event(mmio_base)) - event_found = true; - - return event_found; -} +static const struct xhci_usb_info usb_info = { + .usb2_port_status_reg = XHCI_USB2_PORT_STATUS_REG, + .num_usb2_ports = XHCI_USB2_PORT_NUM, + .usb3_port_status_reg = XHCI_USB3_PORT_STATUS_REG, + .num_usb3_ports = XHCI_USB3_PORT_NUM, +}; struct pme_status_info { #ifdef __SIMPLE_DEVICE__ @@ -203,7 +75,8 @@ static void pch_log_add_elog_event(const struct pme_status_info *info, * If wake source is XHCI, check for detailed wake source events on * USB2/3 ports. */ - if ((info->dev == PCH_DEV_XHCI) && pch_xhci_update_wake_event(dev)) + if ((info->dev == PCH_DEV_XHCI) && + pch_xhci_update_wake_event(&usb_info)) return; elog_add_event_wake(info->elog_event, 0); @@ -251,7 +124,7 @@ static void pch_log_pme_internal_wake_source(void) * PME_STS_BIT in controller register. */ if (!dev_found) - dev_found = pch_xhci_update_wake_event(PCH_DEV_XHCI); + dev_found = pch_xhci_update_wake_event(&usb_info); if (!dev_found) elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0); |