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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e8a6123e9e
Commitcc7cc02bad("PCI: Query platform firmware for device power state") augmented struct pci_platform_pm_ops with a ->get_state hook and implemented it for acpi_pci_platform_pm, the only pci_platform_pm_ops existing till v4.7. However v4.8 introduced another pci_platform_pm_ops for Intel Mobile Internet Devices with commit5823d0893e("x86/platform/intel-mid: Add Power Management Unit driver"). It is missing the ->get_state hook, which is fatal since pci_set_platform_pm() enforces its presence. Andy Shevchenko reports that without the present commit, such a device "crashes without even a character printed out on serial console and reboots (since watchdog)". Retrofit mid_pci_platform_pm with the missing callback to fix the breakage. Acked-and-tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Fixes:cc7cc02bad("PCI: Query platform firmware for device power state") Signed-off-by: Lukas Wunner <lukas@wunner.de> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: http://lkml.kernel.org/r/7c1567d4c49303a4aada94ba16275cbf56b8976b.1477221514.git.lukas@wunner.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
181 lines
5.1 KiB
C
181 lines
5.1 KiB
C
/*
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* intel-mid.h: Intel MID specific setup code
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*
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* (C) Copyright 2009 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2
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* of the License.
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*/
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#ifndef _ASM_X86_INTEL_MID_H
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#define _ASM_X86_INTEL_MID_H
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#include <linux/sfi.h>
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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extern int intel_mid_pci_init(void);
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extern int intel_mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state);
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extern pci_power_t intel_mid_pci_get_power_state(struct pci_dev *pdev);
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extern void intel_mid_pwr_power_off(void);
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#define INTEL_MID_PWR_LSS_OFFSET 4
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#define INTEL_MID_PWR_LSS_TYPE (1 << 7)
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extern int intel_mid_pwr_get_lss_id(struct pci_dev *pdev);
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extern int get_gpio_by_name(const char *name);
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extern void intel_scu_device_register(struct platform_device *pdev);
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extern int __init sfi_parse_mrtc(struct sfi_table_header *table);
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extern int __init sfi_parse_mtmr(struct sfi_table_header *table);
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extern int sfi_mrtc_num;
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extern struct sfi_rtc_table_entry sfi_mrtc_array[];
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/*
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* Here defines the array of devices platform data that IAFW would export
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* through SFI "DEVS" table, we use name and type to match the device and
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* its platform data.
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*/
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struct devs_id {
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char name[SFI_NAME_LEN + 1];
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u8 type;
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u8 delay;
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void *(*get_platform_data)(void *info);
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/* Custom handler for devices */
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void (*device_handler)(struct sfi_device_table_entry *pentry,
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struct devs_id *dev);
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};
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#define sfi_device(i) \
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static const struct devs_id *const __intel_mid_sfi_##i##_dev __used \
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__attribute__((__section__(".x86_intel_mid_dev.init"))) = &i
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/**
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* struct mid_sd_board_info - template for SD device creation
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* @name: identifies the driver
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* @bus_num: board-specific identifier for a given SD controller
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* @max_clk: the maximum frequency device supports
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* @platform_data: the particular data stored there is driver-specific
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*/
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struct mid_sd_board_info {
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char name[SFI_NAME_LEN];
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int bus_num;
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unsigned short addr;
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u32 max_clk;
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void *platform_data;
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};
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/*
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* Medfield is the follow-up of Moorestown, it combines two chip solution into
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* one. Other than that it also added always-on and constant tsc and lapic
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* timers. Medfield is the platform name, and the chip name is called Penwell
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* we treat Medfield/Penwell as a variant of Moorestown. Penwell can be
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* identified via MSRs.
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*/
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enum intel_mid_cpu_type {
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/* 1 was Moorestown */
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INTEL_MID_CPU_CHIP_PENWELL = 2,
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INTEL_MID_CPU_CHIP_CLOVERVIEW,
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INTEL_MID_CPU_CHIP_TANGIER,
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};
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extern enum intel_mid_cpu_type __intel_mid_cpu_chip;
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/**
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* struct intel_mid_ops - Interface between intel-mid & sub archs
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* @arch_setup: arch_setup function to re-initialize platform
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* structures (x86_init, x86_platform_init)
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*
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* This structure can be extended if any new interface is required
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* between intel-mid & its sub arch files.
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*/
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struct intel_mid_ops {
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void (*arch_setup)(void);
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};
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/* Helper API's for INTEL_MID_OPS_INIT */
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#define DECLARE_INTEL_MID_OPS_INIT(cpuname, cpuid) \
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[cpuid] = get_##cpuname##_ops
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/* Maximum number of CPU ops */
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#define MAX_CPU_OPS(a) (sizeof(a)/sizeof(void *))
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/*
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* For every new cpu addition, a weak get_<cpuname>_ops() function needs be
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* declared in arch/x86/platform/intel_mid/intel_mid_weak_decls.h.
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*/
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#define INTEL_MID_OPS_INIT { \
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DECLARE_INTEL_MID_OPS_INIT(penwell, INTEL_MID_CPU_CHIP_PENWELL), \
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DECLARE_INTEL_MID_OPS_INIT(cloverview, INTEL_MID_CPU_CHIP_CLOVERVIEW), \
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DECLARE_INTEL_MID_OPS_INIT(tangier, INTEL_MID_CPU_CHIP_TANGIER) \
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};
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#ifdef CONFIG_X86_INTEL_MID
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static inline enum intel_mid_cpu_type intel_mid_identify_cpu(void)
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{
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return __intel_mid_cpu_chip;
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}
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static inline bool intel_mid_has_msic(void)
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{
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return (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_PENWELL);
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}
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#else /* !CONFIG_X86_INTEL_MID */
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#define intel_mid_identify_cpu() 0
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#define intel_mid_has_msic() 0
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#endif /* !CONFIG_X86_INTEL_MID */
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enum intel_mid_timer_options {
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INTEL_MID_TIMER_DEFAULT,
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INTEL_MID_TIMER_APBT_ONLY,
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INTEL_MID_TIMER_LAPIC_APBT,
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};
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extern enum intel_mid_timer_options intel_mid_timer_options;
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/*
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* Penwell uses spread spectrum clock, so the freq number is not exactly
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* the same as reported by MSR based on SDM.
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*/
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#define FSB_FREQ_83SKU 83200
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#define FSB_FREQ_100SKU 99840
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#define FSB_FREQ_133SKU 133000
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#define FSB_FREQ_167SKU 167000
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#define FSB_FREQ_200SKU 200000
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#define FSB_FREQ_267SKU 267000
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#define FSB_FREQ_333SKU 333000
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#define FSB_FREQ_400SKU 400000
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/* Bus Select SoC Fuse value */
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#define BSEL_SOC_FUSE_MASK 0x7
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/* FSB 133MHz */
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#define BSEL_SOC_FUSE_001 0x1
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/* FSB 100MHz */
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#define BSEL_SOC_FUSE_101 0x5
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/* FSB 83MHz */
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#define BSEL_SOC_FUSE_111 0x7
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#define SFI_MTMR_MAX_NUM 8
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#define SFI_MRTC_MAX 8
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extern void intel_scu_devices_create(void);
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extern void intel_scu_devices_destroy(void);
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/* VRTC timer */
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#define MRST_VRTC_MAP_SZ 1024
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/* #define MRST_VRTC_PGOFFSET 0xc00 */
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extern void intel_mid_rtc_init(void);
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/* The offset for the mapping of global gpio pin to irq */
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#define INTEL_MID_IRQ_OFFSET 0x100
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#endif /* _ASM_X86_INTEL_MID_H */
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