diff options
| -rw-r--r-- | drivers/gpu/drm/msm/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 64 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a5xx_gpu.h | 23 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a5xx_power.c | 344 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_device.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.h | 1 |
6 files changed, 431 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index 3c9f0ccc8abb..028c24df2291 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -7,6 +7,7 @@ msm-y := \ adreno/a3xx_gpu.o \ adreno/a4xx_gpu.o \ adreno/a5xx_gpu.o \ + adreno/a5xx_power.o \ hdmi/hdmi.o \ hdmi/hdmi_audio.o \ hdmi/hdmi_bridge.o \ diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index bf0a93038554..b8647198c11c 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -450,6 +450,9 @@ static int a5xx_hw_init(struct msm_gpu *gpu) REG_A5XX_RBBM_SECVID_TSB_TRUSTED_BASE_HI, 0x00000000); gpu_write(gpu, REG_A5XX_RBBM_SECVID_TSB_TRUSTED_SIZE, 0x00000000); + /* Load the GPMU firmware before starting the HW init */ + a5xx_gpmu_ucode_init(gpu); + ret = adreno_hw_init(gpu); if (ret) return ret; @@ -467,8 +470,9 @@ static int a5xx_hw_init(struct msm_gpu *gpu) if (ret) return ret; - /* Put the GPU into insecure mode */ - gpu_write(gpu, REG_A5XX_RBBM_SECVID_TRUST_CNTL, 0x0); + ret = a5xx_power_init(gpu); + if (ret) + return ret; /* * Send a pipeline event stat to get misbehaving counters to start @@ -483,6 +487,9 @@ static int a5xx_hw_init(struct msm_gpu *gpu) return -EINVAL; } + /* Put the GPU into unsecure mode */ + gpu_write(gpu, REG_A5XX_RBBM_SECVID_TRUST_CNTL, 0x0); + return 0; } @@ -525,6 +532,12 @@ static void a5xx_destroy(struct msm_gpu *gpu) drm_gem_object_unreference_unlocked(a5xx_gpu->pfp_bo); } + if (a5xx_gpu->gpmu_bo) { + if (a5xx_gpu->gpmu_bo) + msm_gem_put_iova(a5xx_gpu->gpmu_bo, gpu->id); + drm_gem_object_unreference_unlocked(a5xx_gpu->gpmu_bo); + } + adreno_gpu_cleanup(adreno_gpu); kfree(a5xx_gpu); } @@ -748,11 +761,54 @@ static void a5xx_dump(struct msm_gpu *gpu) static int a5xx_pm_resume(struct msm_gpu *gpu) { - return msm_gpu_pm_resume(gpu); + int ret; + + /* Turn on the core power */ + ret = msm_gpu_pm_resume(gpu); + if (ret) + return ret; + + /* Turn the RBCCU domain first to limit the chances of voltage droop */ + gpu_write(gpu, REG_A5XX_GPMU_RBCCU_POWER_CNTL, 0x778000); + + /* Wait 3 usecs before polling */ + udelay(3); + + ret = spin_usecs(gpu, 20, REG_A5XX_GPMU_RBCCU_PWR_CLK_STATUS, + (1 << 20), (1 << 20)); + if (ret) { + DRM_ERROR("%s: timeout waiting for RBCCU GDSC enable: %X\n", + gpu->name, + gpu_read(gpu, REG_A5XX_GPMU_RBCCU_PWR_CLK_STATUS)); + return ret; + } + + /* Turn on the SP domain */ + gpu_write(gpu, REG_A5XX_GPMU_SP_POWER_CNTL, 0x778000); + ret = spin_usecs(gpu, 20, REG_A5XX_GPMU_SP_PWR_CLK_STATUS, + (1 << 20), (1 << 20)); + if (ret) + DRM_ERROR("%s: timeout waiting for SP GDSC enable\n", + gpu->name); + + return ret; } static int a5xx_pm_suspend(struct msm_gpu *gpu) { + /* Clear the VBIF pipe before shutting down */ + gpu_write(gpu, REG_A5XX_VBIF_XIN_HALT_CTRL0, 0xF); + spin_until((gpu_read(gpu, REG_A5XX_VBIF_XIN_HALT_CTRL1) & 0xF) == 0xF); + + gpu_write(gpu, REG_A5XX_VBIF_XIN_HALT_CTRL0, 0); + + /* + * Reset the VBIF before power collapse to avoid issue with FIFO + * entries + */ + gpu_write(gpu, REG_A5XX_RBBM_BLOCK_SW_RESET_CMD, 0x003C0000); + gpu_write(gpu, REG_A5XX_RBBM_BLOCK_SW_RESET_CMD, 0x00000000); + return msm_gpu_pm_suspend(gpu); } @@ -820,6 +876,8 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev) adreno_gpu->registers = a5xx_registers; adreno_gpu->reg_offsets = a5xx_register_offsets; + a5xx_gpu->lm_leakage = 0x4E001A; + ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs); if (ret) { a5xx_destroy(&(a5xx_gpu->base.base)); diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.h b/drivers/gpu/drm/msm/adreno/a5xx_gpu.h index 39a07f400b35..1590f845d554 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.h +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.h @@ -30,8 +30,31 @@ struct a5xx_gpu { struct drm_gem_object *pfp_bo; uint64_t pfp_iova; + + struct drm_gem_object *gpmu_bo; + uint64_t gpmu_iova; + uint32_t gpmu_dwords; + + uint32_t lm_leakage; }; #define to_a5xx_gpu(x) container_of(x, struct a5xx_gpu, base) +int a5xx_power_init(struct msm_gpu *gpu); +void a5xx_gpmu_ucode_init(struct msm_gpu *gpu); + +static inline int spin_usecs(struct msm_gpu *gpu, uint32_t usecs, + uint32_t reg, uint32_t mask, uint32_t value) +{ + while (usecs--) { + udelay(1); + if ((gpu_read(gpu, reg) & mask) == value) + return 0; + cpu_relax(); + } + + return -ETIMEDOUT; +} + + #endif /* __A5XX_GPU_H__ */ diff --git a/drivers/gpu/drm/msm/adreno/a5xx_power.c b/drivers/gpu/drm/msm/adreno/a5xx_power.c new file mode 100644 index 000000000000..72d52c71f769 --- /dev/null +++ b/drivers/gpu/drm/msm/adreno/a5xx_power.c @@ -0,0 +1,344 @@ +/* Copyright (c) 2016 The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that 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. + * + */ + +#include <linux/pm_opp.h> +#include "a5xx_gpu.h" + +/* + * The GPMU data block is a block of shared registers that can be used to + * communicate back and forth. These "registers" are by convention with the GPMU + * firwmare and not bound to any specific hardware design + */ + +#define AGC_INIT_BASE REG_A5XX_GPMU_DATA_RAM_BASE +#define AGC_INIT_MSG_MAGIC (AGC_INIT_BASE + 5) +#define AGC_MSG_BASE (AGC_INIT_BASE + 7) + +#define AGC_MSG_STATE (AGC_MSG_BASE + 0) +#define AGC_MSG_COMMAND (AGC_MSG_BASE + 1) +#define AGC_MSG_PAYLOAD_SIZE (AGC_MSG_BASE + 3) +#define AGC_MSG_PAYLOAD(_o) ((AGC_MSG_BASE + 5) + (_o)) + +#define AGC_POWER_CONFIG_PRODUCTION_ID 1 +#define AGC_INIT_MSG_VALUE 0xBABEFACE + +static struct { + uint32_t reg; + uint32_t value; +} a5xx_sequence_regs[] = { + { 0xB9A1, 0x00010303 }, + { 0xB9A2, 0x13000000 }, + { 0xB9A3, 0x00460020 }, + { 0xB9A4, 0x10000000 }, + { 0xB9A5, 0x040A1707 }, + { 0xB9A6, 0x00010000 }, + { 0xB9A7, 0x0E000904 }, + { 0xB9A8, 0x10000000 }, + { 0xB9A9, 0x01165000 }, + { 0xB9AA, 0x000E0002 }, + { 0xB9AB, 0x03884141 }, + { 0xB9AC, 0x10000840 }, + { 0xB9AD, 0x572A5000 }, + { 0xB9AE, 0x00000003 }, + { 0xB9AF, 0x00000000 }, + { 0xB9B0, 0x10000000 }, + { 0xB828, 0x6C204010 }, + { 0xB829, 0x6C204011 }, + { 0xB82A, 0x6C204012 }, + { 0xB82B, 0x6C204013 }, + { 0xB82C, 0x6C204014 }, + { 0xB90F, 0x00000004 }, + { 0xB910, 0x00000002 }, + { 0xB911, 0x00000002 }, + { 0xB912, 0x00000002 }, + { 0xB913, 0x00000002 }, + { 0xB92F, 0x00000004 }, + { 0xB930, 0x00000005 }, + { 0xB931, 0x00000005 }, + { 0xB932, 0x00000005 }, + { 0xB933, 0x00000005 }, + { 0xB96F, 0x00000001 }, + { 0xB970, 0x00000003 }, + { 0xB94F, 0x00000004 }, + { 0xB950, 0x0000000B }, + { 0xB951, 0x0000000B }, + { 0xB952, 0x0000000B }, + { 0xB953, 0x0000000B }, + { 0xB907, 0x00000019 }, + { 0xB927, 0x00000019 }, + { 0xB947, 0x00000019 }, + { 0xB967, 0x00000019 }, + { 0xB987, 0x00000019 }, + { 0xB906, 0x00220001 }, + { 0xB926, 0x00220001 }, + { 0xB946, 0x00220001 }, + { 0xB966, 0x00220001 }, + { 0xB986, 0x00300000 }, + { 0xAC40, 0x0340FF41 }, + { 0xAC41, 0x03BEFED0 }, + { 0xAC42, 0x00331FED }, + { 0xAC43, 0x021FFDD3 }, + { 0xAC44, 0x5555AAAA }, + { 0xAC45, 0x5555AAAA }, + { 0xB9BA, 0x00000008 }, +}; + +/* + * Get the actual voltage value for the operating point at the specified + * frequency + */ +static inline uint32_t _get_mvolts(struct msm_gpu *gpu, uint32_t freq) +{ + struct drm_device *dev = gpu->dev; + struct msm_drm_private *priv = dev->dev_private; + struct platform_device *pdev = priv->gpu_pdev; + struct dev_pm_opp *opp; + + opp = dev_pm_opp_find_freq_exact(&pdev->dev, freq, true); + + return (!IS_ERR(opp)) ? dev_pm_opp_get_voltage(opp) / 1000 : 0; +} + +/* Setup thermal limit management */ +static void a5xx_lm_setup(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu); + unsigned int i; + + /* Write the block of sequence registers */ + for (i = 0; i < ARRAY_SIZE(a5xx_sequence_regs); i++) + gpu_write(gpu, a5xx_sequence_regs[i].reg, + a5xx_sequence_regs[i].value); + + /* Hard code the A530 GPU thermal sensor ID for the GPMU */ + gpu_write(gpu, REG_A5XX_GPMU_TEMP_SENSOR_ID, 0x60007); + gpu_write(gpu, REG_A5XX_GPMU_DELTA_TEMP_THRESHOLD, 0x01); + gpu_write(gpu, REG_A5XX_GPMU_TEMP_SENSOR_CONFIG, 0x01); + + /* Until we get clock scaling 0 is always the active power level */ + gpu_write(gpu, REG_A5XX_GPMU_GPMU_VOLTAGE, 0x80000000 | 0); + + gpu_write(gpu, REG_A5XX_GPMU_BASE_LEAKAGE, a5xx_gpu->lm_leakage); + + /* The threshold is fixed at 6000 for A530 */ + gpu_write(gpu, REG_A5XX_GPMU_GPMU_PWR_THRESHOLD, 0x80000000 | 6000); + + gpu_write(gpu, REG_A5XX_GPMU_BEC_ENABLE, 0x10001FFF); + gpu_write(gpu, REG_A5XX_GDPM_CONFIG1, 0x00201FF1); + + /* Write the voltage table */ + gpu_write(gpu, REG_A5XX_GPMU_BEC_ENABLE, 0x10001FFF); + gpu_write(gpu, REG_A5XX_GDPM_CONFIG1, 0x201FF1); + + gpu_write(gpu, AGC_MSG_STATE, 1); + gpu_write(gpu, AGC_MSG_COMMAND, AGC_POWER_CONFIG_PRODUCTION_ID); + + /* Write the max power - hard coded to 5448 for A530 */ + gpu_write(gpu, AGC_MSG_PAYLOAD(0), 5448); + gpu_write(gpu, AGC_MSG_PAYLOAD(1), 1); + + /* + * For now just write the one voltage level - we will do more when we + * can do scaling + */ + gpu_write(gpu, AGC_MSG_PAYLOAD(2), _get_mvolts(gpu, gpu->fast_rate)); + gpu_write(gpu, AGC_MSG_PAYLOAD(3), gpu->fast_rate / 1000000); + + gpu_write(gpu, AGC_MSG_PAYLOAD_SIZE, 4 * sizeof(uint32_t)); + gpu_write(gpu, AGC_INIT_MSG_MAGIC, AGC_INIT_MSG_VALUE); +} + +/* Enable SP/TP cpower collapse */ +static void a5xx_pc_init(struct msm_gpu *gpu) +{ + gpu_write(gpu, REG_A5XX_GPMU_PWR_COL_INTER_FRAME_CTRL, 0x7F); + gpu_write(gpu, REG_A5XX_GPMU_PWR_COL_BINNING_CTRL, 0); + gpu_write(gpu, REG_A5XX_GPMU_PWR_COL_INTER_FRAME_HYST, 0xA0080); + gpu_write(gpu, REG_A5XX_GPMU_PWR_COL_STAGGER_DELAY, 0x600040); +} + +/* Enable the GPMU microcontroller */ +static int a5xx_gpmu_init(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu); + struct msm_ringbuffer *ring = gpu->rb; + + if (!a5xx_gpu->gpmu_dwords) + return 0; + + /* Turn off protected mode for this operation */ + OUT_PKT7(ring, CP_SET_PROTECTED_MODE, 1); + OUT_RING(ring, 0); + + /* Kick off the IB to load the GPMU microcode */ + OUT_PKT7(ring, CP_INDIRECT_BUFFER_PFE, 3); + OUT_RING(ring, lower_32_bits(a5xx_gpu->gpmu_iova)); + OUT_RING(ring, upper_32_bits(a5xx_gpu->gpmu_iova)); + OUT_RING(ring, a5xx_gpu->gpmu_dwords); + + /* Turn back on protected mode */ + OUT_PKT7(ring, CP_SET_PROTECTED_MODE, 1); + OUT_RING(ring, 1); + + gpu->funcs->flush(gpu); + + if (!gpu->funcs->idle(gpu)) { + DRM_ERROR("%s: Unable to load GPMU firmware. GPMU will not be active\n", + gpu->name); + return -EINVAL; + } + + gpu_write(gpu, REG_A5XX_GPMU_WFI_CONFIG, 0x4014); + + /* Kick off the GPMU */ + gpu_write(gpu, REG_A5XX_GPMU_CM3_SYSRESET, 0x0); + + /* + * Wait for the GPMU to respond. It isn't fatal if it doesn't, we just + * won't have advanced power collapse. + */ + if (spin_usecs(gpu, 25, REG_A5XX_GPMU_GENERAL_0, 0xFFFFFFFF, + 0xBABEFACE)) + DRM_ERROR("%s: GPMU firmware initialization timed out\n", + gpu->name); + + return 0; +} + +/* Enable limits management */ +static void a5xx_lm_enable(struct msm_gpu *gpu) +{ + gpu_write(gpu, REG_A5XX_GDPM_INT_MASK, 0x0); + gpu_write(gpu, REG_A5XX_GDPM_INT_EN, 0x0A); + gpu_write(gpu, REG_A5XX_GPMU_GPMU_VOLTAGE_INTR_EN_MASK, 0x01); + gpu_write(gpu, REG_A5XX_GPMU_TEMP_THRESHOLD_INTR_EN_MASK, 0x50000); + gpu_write(gpu, REG_A5XX_GPMU_THROTTLE_UNMASK_FORCE_CTRL, 0x30000); + + gpu_write(gpu, REG_A5XX_GPMU_CLOCK_THROTTLE_CTRL, 0x011); +} + +int a5xx_power_init(struct msm_gpu *gpu) +{ + int ret; + + /* Set up the limits management */ + a5xx_lm_setup(gpu); + + /* Set up SP/TP power collpase */ + a5xx_pc_init(gpu); + + /* Start the GPMU */ + ret = a5xx_gpmu_init(gpu); + if (ret) + return ret; + + /* Start the limits management */ + a5xx_lm_enable(gpu); + + return 0; +} + +void a5xx_gpmu_ucode_init(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu); + struct drm_device *drm = gpu->dev; + const struct firmware *fw; + uint32_t dwords = 0, offset = 0, bosize; + unsigned int *data, *ptr, *cmds; + unsigned int cmds_size; + + if (a5xx_gpu->gpmu_bo) + return; + + /* Get the firmware */ + if (request_firmware(&fw, adreno_gpu->info->gpmufw, drm->dev)) { + DRM_ERROR("%s: Could not get GPMU firmware. GPMU will not be active\n", + gpu->name); + return; + } + + data = (unsigned int *) fw->data; + + /* + * The first dword is the size of the remaining data in dwords. Use it + * as a checksum of sorts and make sure it matches the actual size of + * the firmware that we read + */ + + if (fw->size < 8 || (data[0] < 2) || (data[0] >= (fw->size >> 2))) + goto out; + + /* The second dword is an ID - look for 2 (GPMU_FIRMWARE_ID) */ + if (data[1] != 2) + goto out; + + cmds = data + data[2] + 3; + cmds_size = data[0] - data[2] - 2; + + /* + * A single type4 opcode can only have so many values attached so + * add enough opcodes to load the all the commands + */ + bosize = (cmds_size + (cmds_size / TYPE4_MAX_PAYLOAD) + 1) << 2; + + mutex_lock(&drm->struct_mutex); + a5xx_gpu->gpmu_bo = msm_gem_new(drm, bosize, MSM_BO_UNCACHED); + mutex_unlock(&drm->struct_mutex); + + if (IS_ERR(a5xx_gpu->gpmu_bo)) + goto err; + + if (msm_gem_get_iova(a5xx_gpu->gpmu_bo, gpu->id, &a5xx_gpu->gpmu_iova)) + goto err; + + ptr = msm_gem_get_vaddr(a5xx_gpu->gpmu_bo); + if (!ptr) + goto err; + + while (cmds_size > 0) { + int i; + uint32_t _size = cmds_size > TYPE4_MAX_PAYLOAD ? + TYPE4_MAX_PAYLOAD : cmds_size; + + ptr[dwords++] = PKT4(REG_A5XX_GPMU_INST_RAM_BASE + offset, + _size); + + for (i = 0; i < _size; i++) + ptr[dwords++] = *cmds++; + + offset += _size; + cmds_size -= _size; + } + + msm_gem_put_vaddr(a5xx_gpu->gpmu_bo); + a5xx_gpu->gpmu_dwords = dwords; + + goto out; + +err: + if (a5xx_gpu->gpmu_iova) + msm_gem_put_iova(a5xx_gpu->gpmu_bo, gpu->id); + if (a5xx_gpu->gpmu_bo) + drm_gem_object_unreference_unlocked(a5xx_gpu->gpmu_bo); + + a5xx_gpu->gpmu_bo = NULL; + a5xx_gpu->gpmu_iova = 0; + a5xx_gpu->gpmu_dwords = 0; + +out: + /* No need to keep that firmware laying around anymore */ + release_firmware(fw); +} diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 985d95fbb726..893eb2b2531b 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -82,6 +82,7 @@ static const struct adreno_info gpulist[] = { .pfpfw = "a530_pfp.fw", .gmem = SZ_1M, .init = a5xx_gpu_init, + .gpmufw = "a530v3_gpmu.fw2", }, }; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index 0d1f4e757f59..e8d55b0306ed 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -73,6 +73,7 @@ struct adreno_info { uint32_t revn; const char *name; const char *pm4fw, *pfpfw; + const char *gpmufw; uint32_t gmem; struct msm_gpu *(*init)(struct drm_device *dev); }; |