--- /dev/null
+/*
+ * 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);
+}
Code Review / kvmfornfv.git / blobdiff