diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/msm/adreno/adreno_gpu.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/msm/adreno/adreno_gpu.c')
-rw-r--r-- | kernel/drivers/gpu/drm/msm/adreno/adreno_gpu.c | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/kernel/drivers/gpu/drm/msm/adreno/adreno_gpu.c new file mode 100644 index 000000000..bbdcab0a5 --- /dev/null +++ b/kernel/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -0,0 +1,392 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * Copyright (c) 2014 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 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. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "adreno_gpu.h" +#include "msm_gem.h" +#include "msm_mmu.h" + +#define RB_SIZE SZ_32K +#define RB_BLKSIZE 16 + +int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + + switch (param) { + case MSM_PARAM_GPU_ID: + *value = adreno_gpu->info->revn; + return 0; + case MSM_PARAM_GMEM_SIZE: + *value = adreno_gpu->gmem; + return 0; + case MSM_PARAM_CHIP_ID: + *value = adreno_gpu->rev.patchid | + (adreno_gpu->rev.minor << 8) | + (adreno_gpu->rev.major << 16) | + (adreno_gpu->rev.core << 24); + return 0; + default: + DBG("%s: invalid param: %u", gpu->name, param); + return -EINVAL; + } +} + +#define rbmemptr(adreno_gpu, member) \ + ((adreno_gpu)->memptrs_iova + offsetof(struct adreno_rbmemptrs, member)) + +int adreno_hw_init(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + int ret; + + DBG("%s", gpu->name); + + ret = msm_gem_get_iova(gpu->rb->bo, gpu->id, &gpu->rb_iova); + if (ret) { + gpu->rb_iova = 0; + dev_err(gpu->dev->dev, "could not map ringbuffer: %d\n", ret); + return ret; + } + + /* Setup REG_CP_RB_CNTL: */ + adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_CNTL, + /* size is log2(quad-words): */ + AXXX_CP_RB_CNTL_BUFSZ(ilog2(gpu->rb->size / 8)) | + AXXX_CP_RB_CNTL_BLKSZ(ilog2(RB_BLKSIZE / 8))); + + /* Setup ringbuffer address: */ + adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_BASE, gpu->rb_iova); + adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_RPTR_ADDR, + rbmemptr(adreno_gpu, rptr)); + + /* Setup scratch/timestamp: */ + adreno_gpu_write(adreno_gpu, REG_ADRENO_SCRATCH_ADDR, + rbmemptr(adreno_gpu, fence)); + + adreno_gpu_write(adreno_gpu, REG_ADRENO_SCRATCH_UMSK, 0x1); + + return 0; +} + +static uint32_t get_wptr(struct msm_ringbuffer *ring) +{ + return ring->cur - ring->start; +} + +uint32_t adreno_last_fence(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + return adreno_gpu->memptrs->fence; +} + +void adreno_recover(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct drm_device *dev = gpu->dev; + int ret; + + gpu->funcs->pm_suspend(gpu); + + /* reset ringbuffer: */ + gpu->rb->cur = gpu->rb->start; + + /* reset completed fence seqno, just discard anything pending: */ + adreno_gpu->memptrs->fence = gpu->submitted_fence; + adreno_gpu->memptrs->rptr = 0; + adreno_gpu->memptrs->wptr = 0; + + gpu->funcs->pm_resume(gpu); + ret = gpu->funcs->hw_init(gpu); + if (ret) { + dev_err(dev->dev, "gpu hw init failed: %d\n", ret); + /* hmm, oh well? */ + } +} + +int adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, + struct msm_file_private *ctx) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct msm_drm_private *priv = gpu->dev->dev_private; + struct msm_ringbuffer *ring = gpu->rb; + unsigned i, ibs = 0; + + for (i = 0; i < submit->nr_cmds; i++) { + switch (submit->cmd[i].type) { + case MSM_SUBMIT_CMD_IB_TARGET_BUF: + /* ignore IB-targets */ + break; + case MSM_SUBMIT_CMD_CTX_RESTORE_BUF: + /* ignore if there has not been a ctx switch: */ + if (priv->lastctx == ctx) + break; + case MSM_SUBMIT_CMD_BUF: + OUT_PKT3(ring, CP_INDIRECT_BUFFER_PFD, 2); + OUT_RING(ring, submit->cmd[i].iova); + OUT_RING(ring, submit->cmd[i].size); + ibs++; + break; + } + } + + /* on a320, at least, we seem to need to pad things out to an + * even number of qwords to avoid issue w/ CP hanging on wrap- + * around: + */ + if (ibs % 2) + OUT_PKT2(ring); + + OUT_PKT0(ring, REG_AXXX_CP_SCRATCH_REG2, 1); + OUT_RING(ring, submit->fence); + + if (adreno_is_a3xx(adreno_gpu) || adreno_is_a4xx(adreno_gpu)) { + /* Flush HLSQ lazy updates to make sure there is nothing + * pending for indirect loads after the timestamp has + * passed: + */ + OUT_PKT3(ring, CP_EVENT_WRITE, 1); + OUT_RING(ring, HLSQ_FLUSH); + + OUT_PKT3(ring, CP_WAIT_FOR_IDLE, 1); + OUT_RING(ring, 0x00000000); + } + + OUT_PKT3(ring, CP_EVENT_WRITE, 3); + OUT_RING(ring, CACHE_FLUSH_TS); + OUT_RING(ring, rbmemptr(adreno_gpu, fence)); + OUT_RING(ring, submit->fence); + + /* we could maybe be clever and only CP_COND_EXEC the interrupt: */ + OUT_PKT3(ring, CP_INTERRUPT, 1); + OUT_RING(ring, 0x80000000); + +#if 0 + if (adreno_is_a3xx(adreno_gpu)) { + /* Dummy set-constant to trigger context rollover */ + OUT_PKT3(ring, CP_SET_CONSTANT, 2); + OUT_RING(ring, CP_REG(REG_A3XX_HLSQ_CL_KERNEL_GROUP_X_REG)); + OUT_RING(ring, 0x00000000); + } +#endif + + gpu->funcs->flush(gpu); + + return 0; +} + +void adreno_flush(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + uint32_t wptr = get_wptr(gpu->rb); + + /* ensure writes to ringbuffer have hit system memory: */ + mb(); + + adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_WPTR, wptr); +} + +void adreno_idle(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + uint32_t wptr = get_wptr(gpu->rb); + + /* wait for CP to drain ringbuffer: */ + if (spin_until(adreno_gpu->memptrs->rptr == wptr)) + DRM_ERROR("%s: timeout waiting to drain ringbuffer!\n", gpu->name); + + /* TODO maybe we need to reset GPU here to recover from hang? */ +} + +#ifdef CONFIG_DEBUG_FS +void adreno_show(struct msm_gpu *gpu, struct seq_file *m) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + int i; + + seq_printf(m, "revision: %d (%d.%d.%d.%d)\n", + adreno_gpu->info->revn, adreno_gpu->rev.core, + adreno_gpu->rev.major, adreno_gpu->rev.minor, + adreno_gpu->rev.patchid); + + seq_printf(m, "fence: %d/%d\n", adreno_gpu->memptrs->fence, + gpu->submitted_fence); + seq_printf(m, "rptr: %d\n", adreno_gpu->memptrs->rptr); + seq_printf(m, "wptr: %d\n", adreno_gpu->memptrs->wptr); + seq_printf(m, "rb wptr: %d\n", get_wptr(gpu->rb)); + + gpu->funcs->pm_resume(gpu); + + /* dump these out in a form that can be parsed by demsm: */ + seq_printf(m, "IO:region %s 00000000 00020000\n", gpu->name); + for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) { + uint32_t start = adreno_gpu->registers[i]; + uint32_t end = adreno_gpu->registers[i+1]; + uint32_t addr; + + for (addr = start; addr <= end; addr++) { + uint32_t val = gpu_read(gpu, addr); + seq_printf(m, "IO:R %08x %08x\n", addr<<2, val); + } + } + + gpu->funcs->pm_suspend(gpu); +} +#endif + +/* would be nice to not have to duplicate the _show() stuff with printk(): */ +void adreno_dump(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + int i; + + printk("revision: %d (%d.%d.%d.%d)\n", + adreno_gpu->info->revn, adreno_gpu->rev.core, + adreno_gpu->rev.major, adreno_gpu->rev.minor, + adreno_gpu->rev.patchid); + + printk("fence: %d/%d\n", adreno_gpu->memptrs->fence, + gpu->submitted_fence); + printk("rptr: %d\n", adreno_gpu->memptrs->rptr); + printk("wptr: %d\n", adreno_gpu->memptrs->wptr); + printk("rb wptr: %d\n", get_wptr(gpu->rb)); + + /* dump these out in a form that can be parsed by demsm: */ + printk("IO:region %s 00000000 00020000\n", gpu->name); + for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) { + uint32_t start = adreno_gpu->registers[i]; + uint32_t end = adreno_gpu->registers[i+1]; + uint32_t addr; + + for (addr = start; addr <= end; addr++) { + uint32_t val = gpu_read(gpu, addr); + printk("IO:R %08x %08x\n", addr<<2, val); + } + } +} + +static uint32_t ring_freewords(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + uint32_t size = gpu->rb->size / 4; + uint32_t wptr = get_wptr(gpu->rb); + uint32_t rptr = adreno_gpu->memptrs->rptr; + return (rptr + (size - 1) - wptr) % size; +} + +void adreno_wait_ring(struct msm_gpu *gpu, uint32_t ndwords) +{ + if (spin_until(ring_freewords(gpu) >= ndwords)) + DRM_ERROR("%s: timeout waiting for ringbuffer space\n", gpu->name); +} + +static const char *iommu_ports[] = { + "gfx3d_user", "gfx3d_priv", + "gfx3d1_user", "gfx3d1_priv", +}; + +int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, + struct adreno_gpu *adreno_gpu, const struct adreno_gpu_funcs *funcs) +{ + struct adreno_platform_config *config = pdev->dev.platform_data; + struct msm_gpu *gpu = &adreno_gpu->base; + struct msm_mmu *mmu; + int ret; + + adreno_gpu->funcs = funcs; + adreno_gpu->info = adreno_info(config->rev); + adreno_gpu->gmem = adreno_gpu->info->gmem; + adreno_gpu->revn = adreno_gpu->info->revn; + adreno_gpu->rev = config->rev; + + gpu->fast_rate = config->fast_rate; + gpu->slow_rate = config->slow_rate; + gpu->bus_freq = config->bus_freq; +#ifdef CONFIG_MSM_BUS_SCALING + gpu->bus_scale_table = config->bus_scale_table; +#endif + + DBG("fast_rate=%u, slow_rate=%u, bus_freq=%u", + gpu->fast_rate, gpu->slow_rate, gpu->bus_freq); + + ret = msm_gpu_init(drm, pdev, &adreno_gpu->base, &funcs->base, + adreno_gpu->info->name, "kgsl_3d0_reg_memory", "kgsl_3d0_irq", + RB_SIZE); + if (ret) + return ret; + + ret = request_firmware(&adreno_gpu->pm4, adreno_gpu->info->pm4fw, drm->dev); + if (ret) { + dev_err(drm->dev, "failed to load %s PM4 firmware: %d\n", + adreno_gpu->info->pm4fw, ret); + return ret; + } + + ret = request_firmware(&adreno_gpu->pfp, adreno_gpu->info->pfpfw, drm->dev); + if (ret) { + dev_err(drm->dev, "failed to load %s PFP firmware: %d\n", + adreno_gpu->info->pfpfw, ret); + return ret; + } + + mmu = gpu->mmu; + if (mmu) { + ret = mmu->funcs->attach(mmu, iommu_ports, + ARRAY_SIZE(iommu_ports)); + if (ret) + return ret; + } + + mutex_lock(&drm->struct_mutex); + adreno_gpu->memptrs_bo = msm_gem_new(drm, sizeof(*adreno_gpu->memptrs), + MSM_BO_UNCACHED); + mutex_unlock(&drm->struct_mutex); + if (IS_ERR(adreno_gpu->memptrs_bo)) { + ret = PTR_ERR(adreno_gpu->memptrs_bo); + adreno_gpu->memptrs_bo = NULL; + dev_err(drm->dev, "could not allocate memptrs: %d\n", ret); + return ret; + } + + adreno_gpu->memptrs = msm_gem_vaddr(adreno_gpu->memptrs_bo); + if (!adreno_gpu->memptrs) { + dev_err(drm->dev, "could not vmap memptrs\n"); + return -ENOMEM; + } + + ret = msm_gem_get_iova(adreno_gpu->memptrs_bo, gpu->id, + &adreno_gpu->memptrs_iova); + if (ret) { + dev_err(drm->dev, "could not map memptrs: %d\n", ret); + return ret; + } + + return 0; +} + +void adreno_gpu_cleanup(struct adreno_gpu *gpu) +{ + if (gpu->memptrs_bo) { + if (gpu->memptrs_iova) + msm_gem_put_iova(gpu->memptrs_bo, gpu->base.id); + drm_gem_object_unreference_unlocked(gpu->memptrs_bo); + } + release_firmware(gpu->pm4); + release_firmware(gpu->pfp); + msm_gpu_cleanup(&gpu->base); +} |