From f8ddda713b9ea6c10012429c089c81bc9a5cd49f Mon Sep 17 00:00:00 2001 From: Danny Huang Date: Thu, 15 Nov 2012 15:42:34 +0800 Subject: [PATCH] ARM: tegra: Tegra30 speedo-based process identification This patch adds speedo-based process identification support for Tegra30. Signed-off-by: Danny Huang [swarren s/Tegra3/Tegra30/ in log print, s/T30/Tegra30/ in commit description] Signed-off-by: Stephen Warren --- arch/arm/mach-tegra/Makefile | 1 + arch/arm/mach-tegra/fuse.c | 11 +- arch/arm/mach-tegra/fuse.h | 7 + arch/arm/mach-tegra/tegra30_speedo.c | 292 +++++++++++++++++++++++++++ 4 files changed, 309 insertions(+), 2 deletions(-) create mode 100644 arch/arm/mach-tegra/tegra30_speedo.c diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 07ed4bdaba3a..6cc23cc83509 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += sleep-t20.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks_data.o +obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_speedo.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += sleep-t30.o obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_SMP) += reset.o diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c index 9fd02c50ae29..8121742711fe 100644 --- a/arch/arm/mach-tegra/fuse.c +++ b/arch/arm/mach-tegra/fuse.c @@ -30,11 +30,13 @@ #define FUSE_SKU_INFO 0x110 #define TEGRA20_FUSE_SPARE_BIT 0x200 +#define TEGRA30_FUSE_SPARE_BIT 0x244 int tegra_sku_id; int tegra_cpu_process_id; int tegra_core_process_id; int tegra_chip_id; +int tegra_cpu_speedo_id; /* only exist in Tegra30 and later */ int tegra_soc_speedo_id; enum tegra_revision tegra_revision; @@ -120,13 +122,18 @@ void tegra_init_fuse(void) id = readl_relaxed(IO_ADDRESS(TEGRA_APB_MISC_BASE) + 0x804); tegra_chip_id = (id >> 8) & 0xff; - tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT; - switch (tegra_chip_id) { case TEGRA20: + tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT; tegra_init_speedo_data = &tegra20_init_speedo_data; break; + case TEGRA30: + tegra_fuse_spare_bit = TEGRA30_FUSE_SPARE_BIT; + tegra_init_speedo_data = &tegra30_init_speedo_data; + break; default: + pr_warn("Tegra: unknown chip id %d\n", tegra_chip_id); + tegra_fuse_spare_bit = TEGRA20_FUSE_SPARE_BIT; tegra_init_speedo_data = &tegra_get_process_id; } diff --git a/arch/arm/mach-tegra/fuse.h b/arch/arm/mach-tegra/fuse.h index 7347c8818937..ff1383dd61a7 100644 --- a/arch/arm/mach-tegra/fuse.h +++ b/arch/arm/mach-tegra/fuse.h @@ -42,6 +42,7 @@ extern int tegra_sku_id; extern int tegra_cpu_process_id; extern int tegra_core_process_id; extern int tegra_chip_id; +extern int tegra_cpu_speedo_id; /* only exist in Tegra30 and later */ extern int tegra_soc_speedo_id; extern enum tegra_revision tegra_revision; @@ -58,4 +59,10 @@ void tegra20_init_speedo_data(void); static inline void tegra20_init_speedo_data(void) {} #endif +#ifdef CONFIG_ARCH_TEGRA_3x_SOC +void tegra30_init_speedo_data(void); +#else +static inline void tegra30_init_speedo_data(void) {} +#endif + #endif diff --git a/arch/arm/mach-tegra/tegra30_speedo.c b/arch/arm/mach-tegra/tegra30_speedo.c new file mode 100644 index 000000000000..125cb16424a6 --- /dev/null +++ b/arch/arm/mach-tegra/tegra30_speedo.c @@ -0,0 +1,292 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include + +#include "fuse.h" + +#define CORE_PROCESS_CORNERS_NUM 1 +#define CPU_PROCESS_CORNERS_NUM 6 + +#define FUSE_SPEEDO_CALIB_0 0x114 +#define FUSE_PACKAGE_INFO 0X1FC +#define FUSE_TEST_PROG_VER 0X128 + +#define G_SPEEDO_BIT_MINUS1 58 +#define G_SPEEDO_BIT_MINUS1_R 59 +#define G_SPEEDO_BIT_MINUS2 60 +#define G_SPEEDO_BIT_MINUS2_R 61 +#define LP_SPEEDO_BIT_MINUS1 62 +#define LP_SPEEDO_BIT_MINUS1_R 63 +#define LP_SPEEDO_BIT_MINUS2 64 +#define LP_SPEEDO_BIT_MINUS2_R 65 + +enum { + THRESHOLD_INDEX_0, + THRESHOLD_INDEX_1, + THRESHOLD_INDEX_2, + THRESHOLD_INDEX_3, + THRESHOLD_INDEX_4, + THRESHOLD_INDEX_5, + THRESHOLD_INDEX_6, + THRESHOLD_INDEX_7, + THRESHOLD_INDEX_8, + THRESHOLD_INDEX_9, + THRESHOLD_INDEX_10, + THRESHOLD_INDEX_11, + THRESHOLD_INDEX_COUNT, +}; + +static const u32 core_process_speedos[][CORE_PROCESS_CORNERS_NUM] = { + {180}, + {170}, + {195}, + {180}, + {168}, + {192}, + {180}, + {170}, + {195}, + {180}, + {180}, + {180}, +}; + +static const u32 cpu_process_speedos[][CPU_PROCESS_CORNERS_NUM] = { + {306, 338, 360, 376, UINT_MAX}, + {295, 336, 358, 375, UINT_MAX}, + {325, 325, 358, 375, UINT_MAX}, + {325, 325, 358, 375, UINT_MAX}, + {292, 324, 348, 364, UINT_MAX}, + {324, 324, 348, 364, UINT_MAX}, + {324, 324, 348, 364, UINT_MAX}, + {295, 336, 358, 375, UINT_MAX}, + {358, 358, 358, 358, 397, UINT_MAX}, + {364, 364, 364, 364, 397, UINT_MAX}, + {295, 336, 358, 375, 391, UINT_MAX}, + {295, 336, 358, 375, 391, UINT_MAX}, +}; + +static int threshold_index; +static int package_id; + +static void fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp) +{ + u32 reg; + int ate_ver; + int bit_minus1; + int bit_minus2; + + reg = tegra_fuse_readl(FUSE_SPEEDO_CALIB_0); + + *speedo_lp = (reg & 0xFFFF) * 4; + *speedo_g = ((reg >> 16) & 0xFFFF) * 4; + + ate_ver = tegra_fuse_readl(FUSE_TEST_PROG_VER); + pr_info("%s: ATE prog ver %d.%d\n", __func__, ate_ver/10, ate_ver%10); + + if (ate_ver >= 26) { + bit_minus1 = tegra_spare_fuse(LP_SPEEDO_BIT_MINUS1); + bit_minus1 |= tegra_spare_fuse(LP_SPEEDO_BIT_MINUS1_R); + bit_minus2 = tegra_spare_fuse(LP_SPEEDO_BIT_MINUS2); + bit_minus2 |= tegra_spare_fuse(LP_SPEEDO_BIT_MINUS2_R); + *speedo_lp |= (bit_minus1 << 1) | bit_minus2; + + bit_minus1 = tegra_spare_fuse(G_SPEEDO_BIT_MINUS1); + bit_minus1 |= tegra_spare_fuse(G_SPEEDO_BIT_MINUS1_R); + bit_minus2 = tegra_spare_fuse(G_SPEEDO_BIT_MINUS2); + bit_minus2 |= tegra_spare_fuse(G_SPEEDO_BIT_MINUS2_R); + *speedo_g |= (bit_minus1 << 1) | bit_minus2; + } else { + *speedo_lp |= 0x3; + *speedo_g |= 0x3; + } +} + +static void rev_sku_to_speedo_ids(int rev, int sku) +{ + switch (rev) { + case TEGRA_REVISION_A01: + tegra_cpu_speedo_id = 0; + tegra_soc_speedo_id = 0; + threshold_index = THRESHOLD_INDEX_0; + break; + case TEGRA_REVISION_A02: + case TEGRA_REVISION_A03: + switch (sku) { + case 0x87: + case 0x82: + tegra_cpu_speedo_id = 1; + tegra_soc_speedo_id = 1; + threshold_index = THRESHOLD_INDEX_1; + break; + case 0x81: + switch (package_id) { + case 1: + tegra_cpu_speedo_id = 2; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_2; + break; + case 2: + tegra_cpu_speedo_id = 4; + tegra_soc_speedo_id = 1; + threshold_index = THRESHOLD_INDEX_7; + break; + default: + pr_err("Tegra30: Unknown pkg %d\n", package_id); + BUG(); + break; + } + break; + case 0x80: + switch (package_id) { + case 1: + tegra_cpu_speedo_id = 5; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_8; + break; + case 2: + tegra_cpu_speedo_id = 6; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_9; + break; + default: + pr_err("Tegra30: Unknown pkg %d\n", package_id); + BUG(); + break; + } + break; + case 0x83: + switch (package_id) { + case 1: + tegra_cpu_speedo_id = 7; + tegra_soc_speedo_id = 1; + threshold_index = THRESHOLD_INDEX_10; + break; + case 2: + tegra_cpu_speedo_id = 3; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_3; + break; + default: + pr_err("Tegra30: Unknown pkg %d\n", package_id); + BUG(); + break; + } + break; + case 0x8F: + tegra_cpu_speedo_id = 8; + tegra_soc_speedo_id = 1; + threshold_index = THRESHOLD_INDEX_11; + break; + case 0x08: + tegra_cpu_speedo_id = 1; + tegra_soc_speedo_id = 1; + threshold_index = THRESHOLD_INDEX_4; + break; + case 0x02: + tegra_cpu_speedo_id = 2; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_5; + break; + case 0x04: + tegra_cpu_speedo_id = 3; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_6; + break; + case 0: + switch (package_id) { + case 1: + tegra_cpu_speedo_id = 2; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_2; + break; + case 2: + tegra_cpu_speedo_id = 3; + tegra_soc_speedo_id = 2; + threshold_index = THRESHOLD_INDEX_3; + break; + default: + pr_err("Tegra30: Unknown pkg %d\n", package_id); + BUG(); + break; + } + break; + default: + pr_warn("Tegra30: Unknown SKU %d\n", sku); + tegra_cpu_speedo_id = 0; + tegra_soc_speedo_id = 0; + threshold_index = THRESHOLD_INDEX_0; + break; + } + break; + default: + pr_warn("Tegra30: Unknown chip rev %d\n", rev); + tegra_cpu_speedo_id = 0; + tegra_soc_speedo_id = 0; + threshold_index = THRESHOLD_INDEX_0; + break; + } +} + +void tegra30_init_speedo_data(void) +{ + u32 cpu_speedo_val; + u32 core_speedo_val; + int i; + + BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) != + THRESHOLD_INDEX_COUNT); + BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) != + THRESHOLD_INDEX_COUNT); + + package_id = tegra_fuse_readl(FUSE_PACKAGE_INFO) & 0x0F; + + rev_sku_to_speedo_ids(tegra_revision, tegra_sku_id); + fuse_speedo_calib(&cpu_speedo_val, &core_speedo_val); + pr_debug("%s CPU speedo value %u\n", __func__, cpu_speedo_val); + pr_debug("%s Core speedo value %u\n", __func__, core_speedo_val); + + for (i = 0; i < CPU_PROCESS_CORNERS_NUM; i++) { + if (cpu_speedo_val < cpu_process_speedos[threshold_index][i]) + break; + } + tegra_cpu_process_id = i - 1; + + if (tegra_cpu_process_id == -1) { + pr_warn("Tegra30: CPU speedo value %3d out of range", + cpu_speedo_val); + tegra_cpu_process_id = 0; + tegra_cpu_speedo_id = 1; + } + + for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++) { + if (core_speedo_val < core_process_speedos[threshold_index][i]) + break; + } + tegra_core_process_id = i - 1; + + if (tegra_core_process_id == -1) { + pr_warn("Tegra30: CORE speedo value %3d out of range", + core_speedo_val); + tegra_core_process_id = 0; + tegra_soc_speedo_id = 1; + } + + pr_info("Tegra30: CPU Speedo ID %d, Soc Speedo ID %d", + tegra_cpu_speedo_id, tegra_soc_speedo_id); +} -- 2.20.1