[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / msm / adreno / adreno_gpu.c

/*
 * 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 32

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_GMEM_BASE:
		*value = 0x100000;
		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;
	case MSM_PARAM_MAX_FREQ:
		*value = adreno_gpu->base.fast_rate;
		return 0;
	case MSM_PARAM_TIMESTAMP:
		if (adreno_gpu->funcs->get_timestamp) {
			int ret;

			pm_runtime_get_sync(&gpu->pdev->dev);
			ret = adreno_gpu->funcs->get_timestamp(gpu, value);
			pm_runtime_put_autosuspend(&gpu->pdev->dev);

			return ret;
		}
		return -EINVAL;
	default:
		DBG("%s: invalid param: %u", gpu->name, param);
		return -EINVAL;
	}
}

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->aspace, &gpu->rb_iova);
	if (ret) {
		gpu->rb_iova = 0;
		dev_err(gpu->dev->dev, "could not map ringbuffer: %d\n", ret);
		return ret;
	}

	/* reset ringbuffer: */
	gpu->rb->cur = gpu->rb->start;

	/* reset completed fence seqno: */
	adreno_gpu->memptrs->fence = gpu->fctx->completed_fence;
	adreno_gpu->memptrs->rptr  = 0;

	/* 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)) |
			(adreno_is_a430(adreno_gpu) ? AXXX_CP_RB_CNTL_NO_UPDATE : 0));

	/* Setup ringbuffer address: */
	adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_BASE,
		REG_ADRENO_CP_RB_BASE_HI, gpu->rb_iova);

	if (!adreno_is_a430(adreno_gpu)) {
		adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_RPTR_ADDR,
			REG_ADRENO_CP_RB_RPTR_ADDR_HI,
			rbmemptr(adreno_gpu, rptr));
	}

	return 0;
}

static uint32_t get_wptr(struct msm_ringbuffer *ring)
{
	return ring->cur - ring->start;
}

/* Use this helper to read rptr, since a430 doesn't update rptr in memory */
static uint32_t get_rptr(struct adreno_gpu *adreno_gpu)
{
	if (adreno_is_a430(adreno_gpu))
		return adreno_gpu->memptrs->rptr = adreno_gpu_read(
			adreno_gpu, REG_ADRENO_CP_RB_RPTR);
	else
		return adreno_gpu->memptrs->rptr;
}

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 drm_device *dev = gpu->dev;
	int ret;

	// XXX pm-runtime??  we *need* the device to be off after this
	// so maybe continuing to call ->pm_suspend/resume() is better?

	gpu->funcs->pm_suspend(gpu);
	gpu->funcs->pm_resume(gpu);

	ret = msm_gpu_hw_init(gpu);
	if (ret) {
		dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
		/* hmm, oh well? */
	}
}

void 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;

	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, adreno_is_a430(adreno_gpu) ?
				CP_INDIRECT_BUFFER_PFE : CP_INDIRECT_BUFFER_PFD, 2);
			OUT_RING(ring, submit->cmd[i].iova);
			OUT_RING(ring, submit->cmd[i].size);
			OUT_PKT2(ring);
			break;
		}
	}

	OUT_PKT0(ring, REG_AXXX_CP_SCRATCH_REG2, 1);
	OUT_RING(ring, submit->fence->seqno);

	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->seqno);

	/* we could maybe be clever and only CP_COND_EXEC the interrupt: */
	OUT_PKT3(ring, CP_INTERRUPT, 1);
	OUT_RING(ring, 0x80000000);

	/* Workaround for missing irq issue on 8x16/a306.  Unsure if the
	 * root cause is a platform issue or some a306 quirk, but this
	 * keeps things humming along:
	 */
	if (adreno_is_a306(adreno_gpu)) {
		OUT_PKT3(ring, CP_WAIT_FOR_IDLE, 1);
		OUT_RING(ring, 0x00000000);
		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);
}

void adreno_flush(struct msm_gpu *gpu)
{
	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
	uint32_t wptr;

	/*
	 * Mask wptr value that we calculate to fit in the HW range. This is
	 * to account for the possibility that the last command fit exactly into
	 * the ringbuffer and rb->next hasn't wrapped to zero yet
	 */
	wptr = get_wptr(gpu->rb) & ((gpu->rb->size / 4) - 1);

	/* ensure writes to ringbuffer have hit system memory: */
	mb();

	adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_WPTR, wptr);
}

bool 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(get_rptr(adreno_gpu) == wptr))
		return true;

	/* TODO maybe we need to reset GPU here to recover from hang? */
	DRM_ERROR("%s: timeout waiting to drain ringbuffer!\n", gpu->name);
	return false;
}

#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->fctx->last_fence);
	seq_printf(m, "rptr:     %d\n", get_rptr(adreno_gpu));
	seq_printf(m, "rb wptr:  %d\n", get_wptr(gpu->rb));

	/* 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);
		}
	}
}
#endif

/* Dump common gpu status and scratch registers on any hang, to make
 * the hangcheck logs more useful.  The scratch registers seem always
 * safe to read when GPU has hung (unlike some other regs, depending
 * on how the GPU hung), and they are useful to match up to cmdstream
 * dumps when debugging hangs:
 */
void adreno_dump_info(struct msm_gpu *gpu)
{
	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);

	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->fctx->last_fence);
	printk("rptr:     %d\n", get_rptr(adreno_gpu));
	printk("rb wptr:  %d\n", get_wptr(gpu->rb));
}

/* 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;

	/* 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 = get_rptr(adreno_gpu);
	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_config adreno_gpu_config  = { 0 };
	struct msm_gpu *gpu = &adreno_gpu->base;
	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->bus_freq  = config->bus_freq;
#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
	gpu->bus_scale_table = config->bus_scale_table;
#endif

	DBG("fast_rate=%u, slow_rate=27000000, bus_freq=%u",
			gpu->fast_rate, gpu->bus_freq);

	adreno_gpu_config.ioname = "kgsl_3d0_reg_memory";
	adreno_gpu_config.irqname = "kgsl_3d0_irq";

	adreno_gpu_config.va_start = SZ_16M;
	adreno_gpu_config.va_end = 0xffffffff;

	adreno_gpu_config.ringsz = RB_SIZE;

	ret = msm_gpu_init(drm, pdev, &adreno_gpu->base, &funcs->base,
			adreno_gpu->info->name, &adreno_gpu_config);
	if (ret)
		return ret;

	pm_runtime_set_autosuspend_delay(&pdev->dev, DRM_MSM_INACTIVE_PERIOD);
	pm_runtime_use_autosuspend(&pdev->dev);
	pm_runtime_enable(&pdev->dev);

	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;
	}

	if (gpu->aspace && gpu->aspace->mmu) {
		struct msm_mmu *mmu = gpu->aspace->mmu;
		ret = mmu->funcs->attach(mmu, iommu_ports,
				ARRAY_SIZE(iommu_ports));
		if (ret)
			return ret;
	}

	adreno_gpu->memptrs_bo = msm_gem_new(drm, sizeof(*adreno_gpu->memptrs),
			MSM_BO_UNCACHED);
	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_get_vaddr(adreno_gpu->memptrs_bo);
	if (IS_ERR(adreno_gpu->memptrs)) {
		dev_err(drm->dev, "could not vmap memptrs\n");
		return -ENOMEM;
	}

	ret = msm_gem_get_iova(adreno_gpu->memptrs_bo, gpu->aspace,
			&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 *adreno_gpu)
{
	struct msm_gpu *gpu = &adreno_gpu->base;

	if (adreno_gpu->memptrs_bo) {
		if (adreno_gpu->memptrs)
			msm_gem_put_vaddr(adreno_gpu->memptrs_bo);

		if (adreno_gpu->memptrs_iova)
			msm_gem_put_iova(adreno_gpu->memptrs_bo, gpu->aspace);

		drm_gem_object_unreference_unlocked(adreno_gpu->memptrs_bo);
	}
	release_firmware(adreno_gpu->pm4);
	release_firmware(adreno_gpu->pfp);

	msm_gpu_cleanup(gpu);

	if (gpu->aspace) {
		gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu,
			iommu_ports, ARRAY_SIZE(iommu_ports));
		msm_gem_address_space_put(gpu->aspace);
	}
}
Commit	Line	Data
7198e6b0 RC	1	/*
	2	* Copyright (C) 2013 Red Hat
	3	* Author: Rob Clark <robdclark@gmail.com>
	4	*
91b74e97 AG	5	* Copyright (c) 2014 The Linux Foundation. All rights reserved.
91b74e97 AG	6	*
7198e6b0 RC	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License version 2 as published by
	9	* the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but WITHOUT
	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	14	* more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along with
	17	* this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include "adreno_gpu.h"
	21	#include "msm_gem.h"
871d812a	22	#include "msm_mmu.h"
7198e6b0	23
7198e6b0	24	#define RB_SIZE SZ_32K
b5f103ab	25	#define RB_BLKSIZE 32
7198e6b0 RC	26
	27	int adreno_get_param(struct msm_gpu gpu, uint32_t param, uint64_t value)
	28	{
	29	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
	30
	31	switch (param) {
	32	case MSM_PARAM_GPU_ID:
	33	*value = adreno_gpu->info->revn;
	34	return 0;
	35	case MSM_PARAM_GMEM_SIZE:
55459968	36	*value = adreno_gpu->gmem;
7198e6b0	37	return 0;
e3689e47 JC	38	case MSM_PARAM_GMEM_BASE:
	39	*value = 0x100000;
	40	return 0;
4e1cbaa3 RC	41	case MSM_PARAM_CHIP_ID:
	42	*value = adreno_gpu->rev.patchid \|
	43	(adreno_gpu->rev.minor << 8) \|
	44	(adreno_gpu->rev.major << 16) \|
	45	(adreno_gpu->rev.core << 24);
	46	return 0;
4102a9e5 RC	47	case MSM_PARAM_MAX_FREQ:
	48	*value = adreno_gpu->base.fast_rate;
	49	return 0;
6c77d1ab	50	case MSM_PARAM_TIMESTAMP:
541de4c9 AT	51	if (adreno_gpu->funcs->get_timestamp) {
	52	int ret;
	53
	54	pm_runtime_get_sync(&gpu->pdev->dev);
	55	ret = adreno_gpu->funcs->get_timestamp(gpu, value);
	56	pm_runtime_put_autosuspend(&gpu->pdev->dev);
	57
	58	return ret;
	59	}
6c77d1ab	60	return -EINVAL;
7198e6b0 RC	61	default:
	62	DBG("%s: invalid param: %u", gpu->name, param);
	63	return -EINVAL;
	64	}
	65	}
	66
7198e6b0 RC	67	int adreno_hw_init(struct msm_gpu *gpu)
	68	{
	69	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
944fc36c	70	int ret;
7198e6b0 RC	71
	72	DBG("%s", gpu->name);
	73
0e08270a	74	ret = msm_gem_get_iova(gpu->rb->bo, gpu->aspace, &gpu->rb_iova);
944fc36c RC	75	if (ret) {
	76	gpu->rb_iova = 0;
	77	dev_err(gpu->dev->dev, "could not map ringbuffer: %d\n", ret);
	78	return ret;
	79	}
	80
de098e5f RC	81	/* reset ringbuffer: */
	82	gpu->rb->cur = gpu->rb->start;
	83
	84	/* reset completed fence seqno: */
	85	adreno_gpu->memptrs->fence = gpu->fctx->completed_fence;
	86	adreno_gpu->memptrs->rptr = 0;
de098e5f	87
7198e6b0	88	/* Setup REG_CP_RB_CNTL: */
91b74e97	89	adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_CNTL,
7198e6b0 RC	90	/* size is log2(quad-words): */
7198e6b0 RC	91	AXXX_CP_RB_CNTL_BUFSZ(ilog2(gpu->rb->size / 8)) \|
7d0c5ee9 CS	92	AXXX_CP_RB_CNTL_BLKSZ(ilog2(RB_BLKSIZE / 8)) \|
7d0c5ee9 CS	93	(adreno_is_a430(adreno_gpu) ? AXXX_CP_RB_CNTL_NO_UPDATE : 0));
7198e6b0 RC	94
7198e6b0 RC	95	/* Setup ringbuffer address: */
fb039981 JC	96	adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_BASE,
fb039981 JC	97	REG_ADRENO_CP_RB_BASE_HI, gpu->rb_iova);
7198e6b0	98
fb039981 JC	99	if (!adreno_is_a430(adreno_gpu)) {
	100	adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_RPTR_ADDR,
	101	REG_ADRENO_CP_RB_RPTR_ADDR_HI,
	102	rbmemptr(adreno_gpu, rptr));
	103	}
7198e6b0 RC	104
	105	return 0;
	106	}
	107
	108	static uint32_t get_wptr(struct msm_ringbuffer *ring)
	109	{
	110	return ring->cur - ring->start;
	111	}
	112
7d0c5ee9 CS	113	/* Use this helper to read rptr, since a430 doesn't update rptr in memory */
	114	static uint32_t get_rptr(struct adreno_gpu *adreno_gpu)
	115	{
	116	if (adreno_is_a430(adreno_gpu))
	117	return adreno_gpu->memptrs->rptr = adreno_gpu_read(
	118	adreno_gpu, REG_ADRENO_CP_RB_RPTR);
	119	else
	120	return adreno_gpu->memptrs->rptr;
	121	}
	122
7198e6b0 RC	123	uint32_t adreno_last_fence(struct msm_gpu *gpu)
	124	{
	125	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
	126	return adreno_gpu->memptrs->fence;
	127	}
	128
bd6f82d8 RC	129	void adreno_recover(struct msm_gpu *gpu)
bd6f82d8 RC	130	{
bd6f82d8 RC	131	struct drm_device *dev = gpu->dev;
	132	int ret;
	133
eeb75474 RC	134	// XXX pm-runtime?? we need the device to be off after this
	135	// so maybe continuing to call ->pm_suspend/resume() is better?
	136
bd6f82d8	137	gpu->funcs->pm_suspend(gpu);
bd6f82d8	138	gpu->funcs->pm_resume(gpu);
4ac277cd	139
eeb75474	140	ret = msm_gpu_hw_init(gpu);
bd6f82d8 RC	141	if (ret) {
	142	dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
	143	/* hmm, oh well? */
	144	}
	145	}
	146
1193c3bc	147	void adreno_submit(struct msm_gpu gpu, struct msm_gem_submit submit,
7198e6b0 RC	148	struct msm_file_private *ctx)
	149	{
	150	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
	151	struct msm_drm_private *priv = gpu->dev->dev_private;
	152	struct msm_ringbuffer *ring = gpu->rb;
6b597ce2	153	unsigned i;
7198e6b0	154
7198e6b0 RC	155	for (i = 0; i < submit->nr_cmds; i++) {
	156	switch (submit->cmd[i].type) {
	157	case MSM_SUBMIT_CMD_IB_TARGET_BUF:
	158	/* ignore IB-targets */
	159	break;
	160	case MSM_SUBMIT_CMD_CTX_RESTORE_BUF:
	161	/* ignore if there has not been a ctx switch: */
	162	if (priv->lastctx == ctx)
	163	break;
	164	case MSM_SUBMIT_CMD_BUF:
357ff00b CS	165	OUT_PKT3(ring, adreno_is_a430(adreno_gpu) ?
357ff00b CS	166	CP_INDIRECT_BUFFER_PFE : CP_INDIRECT_BUFFER_PFD, 2);
7198e6b0 RC	167	OUT_RING(ring, submit->cmd[i].iova);
7198e6b0 RC	168	OUT_RING(ring, submit->cmd[i].size);
6b597ce2	169	OUT_PKT2(ring);
7198e6b0 RC	170	break;
	171	}
	172	}
	173
7198e6b0	174	OUT_PKT0(ring, REG_AXXX_CP_SCRATCH_REG2, 1);
b6295f9a	175	OUT_RING(ring, submit->fence->seqno);
7198e6b0	176
23bd62fd	177	if (adreno_is_a3xx(adreno_gpu) \|\| adreno_is_a4xx(adreno_gpu)) {
7198e6b0 RC	178	/* Flush HLSQ lazy updates to make sure there is nothing
	179	* pending for indirect loads after the timestamp has
	180	* passed:
	181	*/
	182	OUT_PKT3(ring, CP_EVENT_WRITE, 1);
	183	OUT_RING(ring, HLSQ_FLUSH);
	184
	185	OUT_PKT3(ring, CP_WAIT_FOR_IDLE, 1);
	186	OUT_RING(ring, 0x00000000);
	187	}
	188
	189	OUT_PKT3(ring, CP_EVENT_WRITE, 3);
	190	OUT_RING(ring, CACHE_FLUSH_TS);
	191	OUT_RING(ring, rbmemptr(adreno_gpu, fence));
b6295f9a	192	OUT_RING(ring, submit->fence->seqno);
7198e6b0 RC	193
	194	/* we could maybe be clever and only CP_COND_EXEC the interrupt: */
	195	OUT_PKT3(ring, CP_INTERRUPT, 1);
	196	OUT_RING(ring, 0x80000000);
	197
d735fdc3 RC	198	/* Workaround for missing irq issue on 8x16/a306. Unsure if the
	199	* root cause is a platform issue or some a306 quirk, but this
	200	* keeps things humming along:
	201	*/
	202	if (adreno_is_a306(adreno_gpu)) {
	203	OUT_PKT3(ring, CP_WAIT_FOR_IDLE, 1);
	204	OUT_RING(ring, 0x00000000);
	205	OUT_PKT3(ring, CP_INTERRUPT, 1);
	206	OUT_RING(ring, 0x80000000);
	207	}
	208
7198e6b0 RC	209	#if 0
	210	if (adreno_is_a3xx(adreno_gpu)) {
	211	/* Dummy set-constant to trigger context rollover */
	212	OUT_PKT3(ring, CP_SET_CONSTANT, 2);
	213	OUT_RING(ring, CP_REG(REG_A3XX_HLSQ_CL_KERNEL_GROUP_X_REG));
	214	OUT_RING(ring, 0x00000000);
	215	}
	216	#endif
	217
	218	gpu->funcs->flush(gpu);
7198e6b0 RC	219	}
	220
	221	void adreno_flush(struct msm_gpu *gpu)
	222	{
91b74e97	223	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
88b333b0 JC	224	uint32_t wptr;
	225
	226	/*
	227	* Mask wptr value that we calculate to fit in the HW range. This is
	228	* to account for the possibility that the last command fit exactly into
	229	* the ringbuffer and rb->next hasn't wrapped to zero yet
	230	*/
	231	wptr = get_wptr(gpu->rb) & ((gpu->rb->size / 4) - 1);
7198e6b0 RC	232
	233	/* ensure writes to ringbuffer have hit system memory: */
	234	mb();
	235
91b74e97	236	adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_WPTR, wptr);
7198e6b0 RC	237	}
7198e6b0 RC	238
c4a8d475	239	bool adreno_idle(struct msm_gpu *gpu)
7198e6b0 RC	240	{
7198e6b0 RC	241	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
0963756f	242	uint32_t wptr = get_wptr(gpu->rb);
7198e6b0	243
0963756f	244	/* wait for CP to drain ringbuffer: */
c4a8d475 JC	245	if (!spin_until(get_rptr(adreno_gpu) == wptr))
c4a8d475 JC	246	return true;
7198e6b0 RC	247
7198e6b0 RC	248	/* TODO maybe we need to reset GPU here to recover from hang? */
c4a8d475 JC	249	DRM_ERROR("%s: timeout waiting to drain ringbuffer!\n", gpu->name);
c4a8d475 JC	250	return false;
7198e6b0 RC	251	}
	252
	253	#ifdef CONFIG_DEBUG_FS
	254	void adreno_show(struct msm_gpu gpu, struct seq_file m)
	255	{
	256	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
3bcefb04	257	int i;
7198e6b0 RC	258
	259	seq_printf(m, "revision: %d (%d.%d.%d.%d)\n",
	260	adreno_gpu->info->revn, adreno_gpu->rev.core,
	261	adreno_gpu->rev.major, adreno_gpu->rev.minor,
	262	adreno_gpu->rev.patchid);
	263
	264	seq_printf(m, "fence: %d/%d\n", adreno_gpu->memptrs->fence,
ca762a8a	265	gpu->fctx->last_fence);
7d0c5ee9	266	seq_printf(m, "rptr: %d\n", get_rptr(adreno_gpu));
7198e6b0	267	seq_printf(m, "rb wptr: %d\n", get_wptr(gpu->rb));
3bcefb04	268
3bcefb04 RC	269	/* dump these out in a form that can be parsed by demsm: */
	270	seq_printf(m, "IO:region %s 00000000 00020000\n", gpu->name);
	271	for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) {
	272	uint32_t start = adreno_gpu->registers[i];
	273	uint32_t end = adreno_gpu->registers[i+1];
	274	uint32_t addr;
	275
	276	for (addr = start; addr <= end; addr++) {
	277	uint32_t val = gpu_read(gpu, addr);
	278	seq_printf(m, "IO:R %08x %08x\n", addr<<2, val);
	279	}
	280	}
7198e6b0 RC	281	}
	282	#endif
	283
26716185 RC	284	/* Dump common gpu status and scratch registers on any hang, to make
	285	* the hangcheck logs more useful. The scratch registers seem always
	286	* safe to read when GPU has hung (unlike some other regs, depending
	287	* on how the GPU hung), and they are useful to match up to cmdstream
	288	* dumps when debugging hangs:
	289	*/
	290	void adreno_dump_info(struct msm_gpu *gpu)
5b6ef08e RC	291	{
	292	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
	293
	294	printk("revision: %d (%d.%d.%d.%d)\n",
	295	adreno_gpu->info->revn, adreno_gpu->rev.core,
	296	adreno_gpu->rev.major, adreno_gpu->rev.minor,
	297	adreno_gpu->rev.patchid);
	298
	299	printk("fence: %d/%d\n", adreno_gpu->memptrs->fence,
ca762a8a	300	gpu->fctx->last_fence);
7d0c5ee9	301	printk("rptr: %d\n", get_rptr(adreno_gpu));
5b6ef08e	302	printk("rb wptr: %d\n", get_wptr(gpu->rb));
26716185 RC	303	}
	304
	305	/* would be nice to not have to duplicate the _show() stuff with printk(): */
	306	void adreno_dump(struct msm_gpu *gpu)
	307	{
	308	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
	309	int i;
	310
3bcefb04 RC	311	/* dump these out in a form that can be parsed by demsm: */
	312	printk("IO:region %s 00000000 00020000\n", gpu->name);
	313	for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) {
	314	uint32_t start = adreno_gpu->registers[i];
	315	uint32_t end = adreno_gpu->registers[i+1];
	316	uint32_t addr;
	317
	318	for (addr = start; addr <= end; addr++) {
	319	uint32_t val = gpu_read(gpu, addr);
	320	printk("IO:R %08x %08x\n", addr<<2, val);
	321	}
	322	}
5b6ef08e RC	323	}
5b6ef08e RC	324
0963756f	325	static uint32_t ring_freewords(struct msm_gpu *gpu)
7198e6b0 RC	326	{
7198e6b0 RC	327	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
0963756f RC	328	uint32_t size = gpu->rb->size / 4;
0963756f RC	329	uint32_t wptr = get_wptr(gpu->rb);
7d0c5ee9	330	uint32_t rptr = get_rptr(adreno_gpu);
0963756f RC	331	return (rptr + (size - 1) - wptr) % size;
	332	}
	333
	334	void adreno_wait_ring(struct msm_gpu *gpu, uint32_t ndwords)
	335	{
	336	if (spin_until(ring_freewords(gpu) >= ndwords))
	337	DRM_ERROR("%s: timeout waiting for ringbuffer space\n", gpu->name);
7198e6b0 RC	338	}
	339
	340	static const char *iommu_ports[] = {
	341	"gfx3d_user", "gfx3d_priv",
	342	"gfx3d1_user", "gfx3d1_priv",
	343	};
	344
7198e6b0	345	int adreno_gpu_init(struct drm_device drm, struct platform_device pdev,
3526e9fb	346	struct adreno_gpu adreno_gpu, const struct adreno_gpu_funcs funcs)
7198e6b0	347	{
3526e9fb	348	struct adreno_platform_config *config = pdev->dev.platform_data;
5770fc7a	349	struct msm_gpu_config adreno_gpu_config = { 0 };
3526e9fb	350	struct msm_gpu *gpu = &adreno_gpu->base;
e2550b7a	351	int ret;
7198e6b0	352
3526e9fb RC	353	adreno_gpu->funcs = funcs;
	354	adreno_gpu->info = adreno_info(config->rev);
	355	adreno_gpu->gmem = adreno_gpu->info->gmem;
	356	adreno_gpu->revn = adreno_gpu->info->revn;
	357	adreno_gpu->rev = config->rev;
	358
	359	gpu->fast_rate = config->fast_rate;
3526e9fb	360	gpu->bus_freq = config->bus_freq;
6490ad47	361	#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
3526e9fb RC	362	gpu->bus_scale_table = config->bus_scale_table;
	363	#endif
	364
bf5af4ae JC	365	DBG("fast_rate=%u, slow_rate=27000000, bus_freq=%u",
bf5af4ae JC	366	gpu->fast_rate, gpu->bus_freq);
7198e6b0	367
5770fc7a JC	368	adreno_gpu_config.ioname = "kgsl_3d0_reg_memory";
	369	adreno_gpu_config.irqname = "kgsl_3d0_irq";
	370
	371	adreno_gpu_config.va_start = SZ_16M;
	372	adreno_gpu_config.va_end = 0xffffffff;
	373
	374	adreno_gpu_config.ringsz = RB_SIZE;
	375
0122f96f	376	ret = msm_gpu_init(drm, pdev, &adreno_gpu->base, &funcs->base,
5770fc7a	377	adreno_gpu->info->name, &adreno_gpu_config);
0122f96f RC	378	if (ret)
	379	return ret;
	380
eeb75474 RC	381	pm_runtime_set_autosuspend_delay(&pdev->dev, DRM_MSM_INACTIVE_PERIOD);
	382	pm_runtime_use_autosuspend(&pdev->dev);
	383	pm_runtime_enable(&pdev->dev);
	384
3526e9fb	385	ret = request_firmware(&adreno_gpu->pm4, adreno_gpu->info->pm4fw, drm->dev);
7198e6b0 RC	386	if (ret) {
7198e6b0 RC	387	dev_err(drm->dev, "failed to load %s PM4 firmware: %d\n",
3526e9fb	388	adreno_gpu->info->pm4fw, ret);
7198e6b0 RC	389	return ret;
	390	}
	391
3526e9fb	392	ret = request_firmware(&adreno_gpu->pfp, adreno_gpu->info->pfpfw, drm->dev);
7198e6b0 RC	393	if (ret) {
7198e6b0 RC	394	dev_err(drm->dev, "failed to load %s PFP firmware: %d\n",
3526e9fb	395	adreno_gpu->info->pfpfw, ret);
7198e6b0 RC	396	return ret;
	397	}
	398
de85d2b3 RC	399	if (gpu->aspace && gpu->aspace->mmu) {
de85d2b3 RC	400	struct msm_mmu *mmu = gpu->aspace->mmu;
871d812a RC	401	ret = mmu->funcs->attach(mmu, iommu_ports,
	402	ARRAY_SIZE(iommu_ports));
	403	if (ret)
	404	return ret;
	405	}
7198e6b0	406
3526e9fb	407	adreno_gpu->memptrs_bo = msm_gem_new(drm, sizeof(*adreno_gpu->memptrs),
7198e6b0	408	MSM_BO_UNCACHED);
3526e9fb RC	409	if (IS_ERR(adreno_gpu->memptrs_bo)) {
	410	ret = PTR_ERR(adreno_gpu->memptrs_bo);
	411	adreno_gpu->memptrs_bo = NULL;
7198e6b0 RC	412	dev_err(drm->dev, "could not allocate memptrs: %d\n", ret);
	413	return ret;
	414	}
	415
18f23049	416	adreno_gpu->memptrs = msm_gem_get_vaddr(adreno_gpu->memptrs_bo);
69a834c2	417	if (IS_ERR(adreno_gpu->memptrs)) {
7198e6b0 RC	418	dev_err(drm->dev, "could not vmap memptrs\n");
	419	return -ENOMEM;
	420	}
	421
8bdcd949	422	ret = msm_gem_get_iova(adreno_gpu->memptrs_bo, gpu->aspace,
3526e9fb	423	&adreno_gpu->memptrs_iova);
7198e6b0 RC	424	if (ret) {
	425	dev_err(drm->dev, "could not map memptrs: %d\n", ret);
	426	return ret;
	427	}
	428
	429	return 0;
	430	}
	431
9873ef07	432	void adreno_gpu_cleanup(struct adreno_gpu *adreno_gpu)
7198e6b0	433	{
9873ef07 JC	434	struct msm_gpu *gpu = &adreno_gpu->base;
	435
	436	if (adreno_gpu->memptrs_bo) {
	437	if (adreno_gpu->memptrs)
	438	msm_gem_put_vaddr(adreno_gpu->memptrs_bo);
	439
	440	if (adreno_gpu->memptrs_iova)
8bdcd949	441	msm_gem_put_iova(adreno_gpu->memptrs_bo, gpu->aspace);
9873ef07 JC	442
	443	drm_gem_object_unreference_unlocked(adreno_gpu->memptrs_bo);
	444	}
	445	release_firmware(adreno_gpu->pm4);
	446	release_firmware(adreno_gpu->pfp);
18f23049	447
9873ef07	448	msm_gpu_cleanup(gpu);
18f23049	449
9873ef07 JC	450	if (gpu->aspace) {
	451	gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu,
	452	iommu_ports, ARRAY_SIZE(iommu_ports));
ee546cd3	453	msm_gem_address_space_put(gpu->aspace);
7198e6b0	454	}
7198e6b0	455	}