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82dca611bb
This is based on the old code on arch/x86/kernel/mfgpt_32.c, except it's not x86 specific, it's modular, and it makes use of a PCI BAR rather than a random MSR. Currently module unloading is not supported; it's uncertain whether or not it can be made work with the hardware. [akpm@linux-foundation.org: add X86 dependency] Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
188 lines
4.7 KiB
C
188 lines
4.7 KiB
C
/*
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* AMD Geode definitions
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* Copyright (C) 2006, Advanced Micro Devices, Inc.
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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 version 2 of the GNU General Public License
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* as published by the Free Software Foundation.
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*/
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#ifndef _ASM_X86_GEODE_H
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#define _ASM_X86_GEODE_H
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#include <asm/processor.h>
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#include <linux/io.h>
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#include <linux/cs5535.h>
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/* Generic southbridge functions */
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#define GEODE_DEV_PMS 0
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#define GEODE_DEV_ACPI 1
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#define GEODE_DEV_GPIO 2
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#define GEODE_DEV_MFGPT 3
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extern int geode_get_dev_base(unsigned int dev);
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/* Useful macros */
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#define geode_pms_base() geode_get_dev_base(GEODE_DEV_PMS)
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#define geode_acpi_base() geode_get_dev_base(GEODE_DEV_ACPI)
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#define geode_gpio_base() geode_get_dev_base(GEODE_DEV_GPIO)
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#define geode_mfgpt_base() geode_get_dev_base(GEODE_DEV_MFGPT)
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/* MSRS */
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#define MSR_GLIU_P2D_RO0 0x10000029
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#define MSR_LX_GLD_MSR_CONFIG 0x48002001
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#define MSR_LX_MSR_PADSEL 0x48002011 /* NOT 0x48000011; the data
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* sheet has the wrong value */
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#define MSR_GLCP_SYS_RSTPLL 0x4C000014
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#define MSR_GLCP_DOTPLL 0x4C000015
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#define MSR_LBAR_SMB 0x5140000B
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#define MSR_LBAR_GPIO 0x5140000C
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#define MSR_LBAR_MFGPT 0x5140000D
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#define MSR_LBAR_ACPI 0x5140000E
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#define MSR_LBAR_PMS 0x5140000F
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#define MSR_DIVIL_SOFT_RESET 0x51400017
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#define MSR_LX_SPARE_MSR 0x80000011 /* DC-specific */
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#define MSR_GX_GLD_MSR_CONFIG 0xC0002001
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#define MSR_GX_MSR_PADSEL 0xC0002011
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/* Resource Sizes */
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#define LBAR_GPIO_SIZE 0xFF
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#define LBAR_MFGPT_SIZE 0x40
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#define LBAR_ACPI_SIZE 0x40
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#define LBAR_PMS_SIZE 0x80
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/* ACPI registers (PMS block) */
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/*
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* PM1_EN is only valid when VSA is enabled for 16 bit reads.
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* When VSA is not enabled, *always* read both PM1_STS and PM1_EN
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* with a 32 bit read at offset 0x0
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*/
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#define PM1_STS 0x00
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#define PM1_EN 0x02
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#define PM1_CNT 0x08
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#define PM2_CNT 0x0C
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#define PM_TMR 0x10
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#define PM_GPE0_STS 0x18
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#define PM_GPE0_EN 0x1C
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/* PMC registers (PMS block) */
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#define PM_SSD 0x00
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#define PM_SCXA 0x04
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#define PM_SCYA 0x08
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#define PM_OUT_SLPCTL 0x0C
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#define PM_SCLK 0x10
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#define PM_SED 0x1
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#define PM_SCXD 0x18
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#define PM_SCYD 0x1C
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#define PM_IN_SLPCTL 0x20
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#define PM_WKD 0x30
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#define PM_WKXD 0x34
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#define PM_RD 0x38
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#define PM_WKXA 0x3C
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#define PM_FSD 0x40
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#define PM_TSD 0x44
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#define PM_PSD 0x48
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#define PM_NWKD 0x4C
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#define PM_AWKD 0x50
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#define PM_SSC 0x54
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/* VSA2 magic values */
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#define VSA_VRC_INDEX 0xAC1C
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#define VSA_VRC_DATA 0xAC1E
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#define VSA_VR_UNLOCK 0xFC53 /* unlock virtual register */
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#define VSA_VR_SIGNATURE 0x0003
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#define VSA_VR_MEM_SIZE 0x0200
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#define AMD_VSA_SIG 0x4132 /* signature is ascii 'VSA2' */
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#define GSW_VSA_SIG 0x534d /* General Software signature */
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static inline u32 geode_gpio(unsigned int nr)
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{
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BUG_ON(nr > 28);
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return 1 << nr;
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}
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extern void geode_gpio_set(u32, unsigned int);
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extern void geode_gpio_clear(u32, unsigned int);
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extern int geode_gpio_isset(u32, unsigned int);
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extern void geode_gpio_setup_event(unsigned int, int, int);
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extern void geode_gpio_set_irq(unsigned int, unsigned int);
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static inline void geode_gpio_event_irq(unsigned int gpio, int pair)
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{
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geode_gpio_setup_event(gpio, pair, 0);
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}
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static inline void geode_gpio_event_pme(unsigned int gpio, int pair)
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{
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geode_gpio_setup_event(gpio, pair, 1);
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}
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/* Specific geode tests */
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static inline int is_geode_gx(void)
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{
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return ((boot_cpu_data.x86_vendor == X86_VENDOR_NSC) &&
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(boot_cpu_data.x86 == 5) &&
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(boot_cpu_data.x86_model == 5));
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}
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static inline int is_geode_lx(void)
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{
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return ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
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(boot_cpu_data.x86 == 5) &&
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(boot_cpu_data.x86_model == 10));
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}
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static inline int is_geode(void)
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{
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return (is_geode_gx() || is_geode_lx());
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}
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#ifdef CONFIG_MGEODE_LX
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extern int geode_has_vsa2(void);
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#else
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static inline int geode_has_vsa2(void)
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{
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return 0;
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}
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#endif
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static inline void geode_mfgpt_write(int timer, u16 reg, u16 value)
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{
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u32 base = geode_get_dev_base(GEODE_DEV_MFGPT);
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outw(value, base + reg + (timer * 8));
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}
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static inline u16 geode_mfgpt_read(int timer, u16 reg)
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{
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u32 base = geode_get_dev_base(GEODE_DEV_MFGPT);
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return inw(base + reg + (timer * 8));
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}
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extern int geode_mfgpt_toggle_event(int timer, int cmp, int event, int enable);
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extern int geode_mfgpt_set_irq(int timer, int cmp, int *irq, int enable);
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extern int geode_mfgpt_alloc_timer(int timer, int domain);
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#define geode_mfgpt_setup_irq(t, c, i) geode_mfgpt_set_irq((t), (c), (i), 1)
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#define geode_mfgpt_release_irq(t, c, i) geode_mfgpt_set_irq((t), (c), (i), 0)
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#ifdef CONFIG_GEODE_MFGPT_TIMER
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extern int __init mfgpt_timer_setup(void);
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#else
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static inline int mfgpt_timer_setup(void) { return 0; }
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#endif
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#endif /* _ASM_X86_GEODE_H */
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