1 /* 2 * intel-mid.h: Intel MID specific setup code 3 * 4 * (C) Copyright 2009 Intel Corporation 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; version 2 9 * of the License. 10 */ 11 #ifndef _ASM_X86_INTEL_MID_H 12 #define _ASM_X86_INTEL_MID_H 13 14 #include <linux/sfi.h> 15 #include <linux/pci.h> 16 #include <linux/platform_device.h> 17 18 extern int intel_mid_pci_init(void); 19 extern int intel_mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state); 20 21 #define INTEL_MID_PWR_LSS_OFFSET 4 22 #define INTEL_MID_PWR_LSS_TYPE (1 << 7) 23 24 extern int intel_mid_pwr_get_lss_id(struct pci_dev *pdev); 25 26 extern int get_gpio_by_name(const char *name); 27 extern void intel_scu_device_register(struct platform_device *pdev); 28 extern int __init sfi_parse_mrtc(struct sfi_table_header *table); 29 extern int __init sfi_parse_mtmr(struct sfi_table_header *table); 30 extern int sfi_mrtc_num; 31 extern struct sfi_rtc_table_entry sfi_mrtc_array[]; 32 33 /* 34 * Here defines the array of devices platform data that IAFW would export 35 * through SFI "DEVS" table, we use name and type to match the device and 36 * its platform data. 37 */ 38 struct devs_id { 39 char name[SFI_NAME_LEN + 1]; 40 u8 type; 41 u8 delay; 42 void *(*get_platform_data)(void *info); 43 /* Custom handler for devices */ 44 void (*device_handler)(struct sfi_device_table_entry *pentry, 45 struct devs_id *dev); 46 }; 47 48 #define sfi_device(i) \ 49 static const struct devs_id *const __intel_mid_sfi_##i##_dev __used \ 50 __attribute__((__section__(".x86_intel_mid_dev.init"))) = &i 51 52 /** 53 * struct mid_sd_board_info - template for SD device creation 54 * @name: identifies the driver 55 * @bus_num: board-specific identifier for a given SD controller 56 * @max_clk: the maximum frequency device supports 57 * @platform_data: the particular data stored there is driver-specific 58 */ 59 struct mid_sd_board_info { 60 char name[SFI_NAME_LEN]; 61 int bus_num; 62 unsigned short addr; 63 u32 max_clk; 64 void *platform_data; 65 }; 66 67 /* 68 * Medfield is the follow-up of Moorestown, it combines two chip solution into 69 * one. Other than that it also added always-on and constant tsc and lapic 70 * timers. Medfield is the platform name, and the chip name is called Penwell 71 * we treat Medfield/Penwell as a variant of Moorestown. Penwell can be 72 * identified via MSRs. 73 */ 74 enum intel_mid_cpu_type { 75 /* 1 was Moorestown */ 76 INTEL_MID_CPU_CHIP_PENWELL = 2, 77 INTEL_MID_CPU_CHIP_CLOVERVIEW, 78 INTEL_MID_CPU_CHIP_TANGIER, 79 }; 80 81 extern enum intel_mid_cpu_type __intel_mid_cpu_chip; 82 83 /** 84 * struct intel_mid_ops - Interface between intel-mid & sub archs 85 * @arch_setup: arch_setup function to re-initialize platform 86 * structures (x86_init, x86_platform_init) 87 * 88 * This structure can be extended if any new interface is required 89 * between intel-mid & its sub arch files. 90 */ 91 struct intel_mid_ops { 92 void (*arch_setup)(void); 93 }; 94 95 /* Helper API's for INTEL_MID_OPS_INIT */ 96 #define DECLARE_INTEL_MID_OPS_INIT(cpuname, cpuid) \ 97 [cpuid] = get_##cpuname##_ops 98 99 /* Maximum number of CPU ops */ 100 #define MAX_CPU_OPS(a) (sizeof(a)/sizeof(void *)) 101 102 /* 103 * For every new cpu addition, a weak get_<cpuname>_ops() function needs be 104 * declared in arch/x86/platform/intel_mid/intel_mid_weak_decls.h. 105 */ 106 #define INTEL_MID_OPS_INIT { \ 107 DECLARE_INTEL_MID_OPS_INIT(penwell, INTEL_MID_CPU_CHIP_PENWELL), \ 108 DECLARE_INTEL_MID_OPS_INIT(cloverview, INTEL_MID_CPU_CHIP_CLOVERVIEW), \ 109 DECLARE_INTEL_MID_OPS_INIT(tangier, INTEL_MID_CPU_CHIP_TANGIER) \ 110 }; 111 112 #ifdef CONFIG_X86_INTEL_MID 113 114 static inline enum intel_mid_cpu_type intel_mid_identify_cpu(void) 115 { 116 return __intel_mid_cpu_chip; 117 } 118 119 static inline bool intel_mid_has_msic(void) 120 { 121 return (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_PENWELL); 122 } 123 124 #else /* !CONFIG_X86_INTEL_MID */ 125 126 #define intel_mid_identify_cpu() 0 127 #define intel_mid_has_msic() 0 128 129 #endif /* !CONFIG_X86_INTEL_MID */ 130 131 enum intel_mid_timer_options { 132 INTEL_MID_TIMER_DEFAULT, 133 INTEL_MID_TIMER_APBT_ONLY, 134 INTEL_MID_TIMER_LAPIC_APBT, 135 }; 136 137 extern enum intel_mid_timer_options intel_mid_timer_options; 138 139 /* 140 * Penwell uses spread spectrum clock, so the freq number is not exactly 141 * the same as reported by MSR based on SDM. 142 */ 143 #define FSB_FREQ_83SKU 83200 144 #define FSB_FREQ_100SKU 99840 145 #define FSB_FREQ_133SKU 133000 146 147 #define FSB_FREQ_167SKU 167000 148 #define FSB_FREQ_200SKU 200000 149 #define FSB_FREQ_267SKU 267000 150 #define FSB_FREQ_333SKU 333000 151 #define FSB_FREQ_400SKU 400000 152 153 /* Bus Select SoC Fuse value */ 154 #define BSEL_SOC_FUSE_MASK 0x7 155 /* FSB 133MHz */ 156 #define BSEL_SOC_FUSE_001 0x1 157 /* FSB 100MHz */ 158 #define BSEL_SOC_FUSE_101 0x5 159 /* FSB 83MHz */ 160 #define BSEL_SOC_FUSE_111 0x7 161 162 #define SFI_MTMR_MAX_NUM 8 163 #define SFI_MRTC_MAX 8 164 165 extern void intel_scu_devices_create(void); 166 extern void intel_scu_devices_destroy(void); 167 168 /* VRTC timer */ 169 #define MRST_VRTC_MAP_SZ 1024 170 /* #define MRST_VRTC_PGOFFSET 0xc00 */ 171 172 extern void intel_mid_rtc_init(void); 173 174 /* The offset for the mapping of global gpio pin to irq */ 175 #define INTEL_MID_IRQ_OFFSET 0x100 176 177 #endif /* _ASM_X86_INTEL_MID_H */ 178