drm/msm: gpu: Add A5XX target support

Add support for the A5XX family of Adreno GPUs.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/Makefile

@@ -6,6 +6,7 @@ msm-y := \
 	adreno/adreno_gpu.o \
 	adreno/a3xx_gpu.o \
 	adreno/a4xx_gpu.o \
+	adreno/a5xx_gpu.o \
 	hdmi/hdmi.o \
 	hdmi/hdmi_audio.o \
 	hdmi/hdmi_bridge.o \

drivers/gpu/drm/msm/adreno/a5xx_gpu.h

+/* 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.
+ *
+ */
+#ifndef __A5XX_GPU_H__
+#define __A5XX_GPU_H__
+
+#include "adreno_gpu.h"
+
+/* Bringing over the hack from the previous targets */
+#undef ROP_COPY
+#undef ROP_XOR
+
+#include "a5xx.xml.h"
+
+struct a5xx_gpu {
+	struct adreno_gpu base;
+	struct platform_device *pdev;
+
+	struct drm_gem_object *pm4_bo;
+	uint64_t pm4_iova;
+
+	struct drm_gem_object *pfp_bo;
+	uint64_t pfp_iova;
+};
+
+#define to_a5xx_gpu(x) container_of(x, struct a5xx_gpu, base)
+
+#endif /* __A5XX_GPU_H__ */

drivers/gpu/drm/msm/adreno/adreno_device.c

@@ -74,6 +74,14 @@ static const struct adreno_info gpulist[] = {
 		.pfpfw = "a420_pfp.fw",
 		.gmem  = (SZ_1M + SZ_512K),
 		.init  = a4xx_gpu_init,
+	}, {
+		.rev = ADRENO_REV(5, 3, 0, ANY_ID),
+		.revn = 530,
+		.name = "A530",
+		.pm4fw = "a530_pm4.fw",
+		.pfpfw = "a530_pfp.fw",
+		.gmem = SZ_1M,
+		.init = a5xx_gpu_init,
 	},
 };
 
@@ -83,6 +91,8 @@ MODULE_FIRMWARE("a330_pm4.fw");
 MODULE_FIRMWARE("a330_pfp.fw");
 MODULE_FIRMWARE("a420_pm4.fw");
 MODULE_FIRMWARE("a420_pfp.fw");
+MODULE_FIRMWARE("a530_fm4.fw");
+MODULE_FIRMWARE("a530_pfp.fw");
 
 static inline bool _rev_match(uint8_t entry, uint8_t id)
 {
@@ -170,12 +180,20 @@ static void set_gpu_pdev(struct drm_device *dev,
 	priv->gpu_pdev = pdev;
 }
 
+static const struct {
+	const char *str;
+	uint32_t flag;
+} quirks[] = {
+	{ "qcom,gpu-quirk-two-pass-use-wfi", ADRENO_QUIRK_TWO_PASS_USE_WFI },
+	{ "qcom,gpu-quirk-fault-detect-mask", ADRENO_QUIRK_FAULT_DETECT_MASK },
+};
+
 static int adreno_bind(struct device *dev, struct device *master, void *data)
 {
 	static struct adreno_platform_config config = {};
 	struct device_node *child, *node = dev->of_node;
 	u32 val;
-	int ret;
+	int ret, i;
 
 	ret = of_property_read_u32(node, "qcom,chipid", &val);
 	if (ret) {
@@ -209,6 +227,10 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
 		return -ENXIO;
 	}
 
+	for (i = 0; i < ARRAY_SIZE(quirks); i++)
+		if (of_property_read_bool(node, quirks[i].str))
+			config.quirks |= quirks[i].flag;
+
 	dev->platform_data = &config;
 	set_gpu_pdev(dev_get_drvdata(master), to_platform_device(dev));
 	return 0;

drivers/gpu/drm/msm/adreno/adreno_gpu.c

@@ -22,7 +22,7 @@
 #include "msm_mmu.h"
 
 #define RB_SIZE    SZ_32K
-#define RB_BLKSIZE 16
+#define RB_BLKSIZE 32
 
 int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
 {
@@ -54,9 +54,6 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
 	}
 }
 
-#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);
@@ -349,6 +346,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	adreno_gpu->gmem = adreno_gpu->info->gmem;
 	adreno_gpu->revn = adreno_gpu->info->revn;
 	adreno_gpu->rev = config->rev;
+	adreno_gpu->quirks = config->quirks;
 
 	gpu->fast_rate = config->fast_rate;
 	gpu->slow_rate = config->slow_rate;

drivers/gpu/drm/msm/adreno/adreno_gpu.h

@@ -48,6 +48,11 @@ enum adreno_regs {
 	REG_ADRENO_REGISTER_MAX,
 };
 
+enum adreno_quirks {
+	ADRENO_QUIRK_TWO_PASS_USE_WFI = 1,
+	ADRENO_QUIRK_FAULT_DETECT_MASK = 2,
+};
+
 struct adreno_rev {
 	uint8_t  core;
 	uint8_t  major;
@@ -74,6 +79,9 @@ struct adreno_info {
 
 const struct adreno_info *adreno_info(struct adreno_rev rev);
 
+#define rbmemptr(adreno_gpu, member)  \
+	((adreno_gpu)->memptrs_iova + offsetof(struct adreno_rbmemptrs, member))
+
 struct adreno_rbmemptrs {
 	volatile uint32_t rptr;
 	volatile uint32_t wptr;
@@ -107,6 +115,8 @@ struct adreno_gpu {
 	 * code (a3xx_gpu.c) and stored in this common location.
 	 */
 	const unsigned int *reg_offsets;
+
+	uint32_t quirks;
 };
 #define to_adreno_gpu(x) container_of(x, struct adreno_gpu, base)
 
@@ -117,6 +127,7 @@ struct adreno_platform_config {
 #ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
 	struct msm_bus_scale_pdata *bus_scale_table;
 #endif
+	uint32_t quirks;
 };
 
 #define ADRENO_IDLE_TIMEOUT msecs_to_jiffies(1000)
@@ -180,6 +191,11 @@ static inline int adreno_is_a430(struct adreno_gpu *gpu)
        return gpu->revn == 430;
 }
 
+static inline int adreno_is_a530(struct adreno_gpu *gpu)
+{
+	return gpu->revn == 530;
+}
+
 int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value);
 int adreno_hw_init(struct msm_gpu *gpu);
 uint32_t adreno_last_fence(struct msm_gpu *gpu);
@@ -299,6 +315,7 @@ static inline void adreno_gpu_write(struct adreno_gpu *gpu,
 
 struct msm_gpu *a3xx_gpu_init(struct drm_device *dev);
 struct msm_gpu *a4xx_gpu_init(struct drm_device *dev);
+struct msm_gpu *a5xx_gpu_init(struct drm_device *dev);
 
 static inline void adreno_gpu_write64(struct adreno_gpu *gpu,
 		enum adreno_regs lo, enum adreno_regs hi, u64 data)
@@ -307,4 +324,28 @@ static inline void adreno_gpu_write64(struct adreno_gpu *gpu,
 	adreno_gpu_write(gpu, hi, upper_32_bits(data));
 }
 
+/*
+ * Given a register and a count, return a value to program into
+ * REG_CP_PROTECT_REG(n) - this will block both reads and writes for _len
+ * registers starting at _reg.
+ *
+ * The register base needs to be a multiple of the length. If it is not, the
+ * hardware will quietly mask off the bits for you and shift the size. For
+ * example, if you intend the protection to start at 0x07 for a length of 4
+ * (0x07-0x0A) the hardware will actually protect (0x04-0x07) which might
+ * expose registers you intended to protect!
+ */
+#define ADRENO_PROTECT_RW(_reg, _len) \
+	((1 << 30) | (1 << 29) | \
+	((ilog2((_len)) & 0x1F) << 24) | (((_reg) << 2) & 0xFFFFF))
+
+/*
+ * Same as above, but allow reads over the range. For areas of mixed use (such
+ * as performance counters) this allows us to protect a much larger range with a
+ * single register
+ */
+#define ADRENO_PROTECT_RDONLY(_reg, _len) \
+	((1 << 29) \
+	((ilog2((_len)) & 0x1F) << 24) | (((_reg) << 2) & 0xFFFFF))
+
 #endif /* __ADRENO_GPU_H__ */

drivers/gpu/drm/msm/msm_gpu.c

@@ -96,6 +96,10 @@ static int enable_clk(struct msm_gpu *gpu)
 	if (gpu->grp_clks[0] && gpu->fast_rate)
 		clk_set_rate(gpu->grp_clks[0], gpu->fast_rate);
 
+	/* Set the RBBM timer rate to 19.2Mhz */
+	if (gpu->grp_clks[2])
+		clk_set_rate(gpu->grp_clks[2], 19200000);
+
 	for (i = ARRAY_SIZE(gpu->grp_clks) - 1; i >= 0; i--)
 		if (gpu->grp_clks[i])
 			clk_prepare(gpu->grp_clks[i]);
@@ -122,6 +126,9 @@ static int disable_clk(struct msm_gpu *gpu)
 	if (gpu->grp_clks[0] && gpu->slow_rate)
 		clk_set_rate(gpu->grp_clks[0], gpu->slow_rate);
 
+	if (gpu->grp_clks[2])
+		clk_set_rate(gpu->grp_clks[2], 0);
+
 	return 0;
 }
 
@@ -553,8 +560,8 @@ static irqreturn_t irq_handler(int irq, void *data)
 }
 
 static const char *clk_names[] = {
-		"core_clk", "iface_clk", "mem_clk", "mem_iface_clk",
-		"alt_mem_iface_clk",
+		"core_clk", "iface_clk", "rbbmtimer_clk", "mem_clk",
+		"mem_iface_clk", "alt_mem_iface_clk",
 };
 
 int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
@@ -647,7 +654,7 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	iommu = iommu_domain_alloc(&platform_bus_type);
 	if (iommu) {
 		/* TODO 32b vs 64b address space.. */
-		iommu->geometry.aperture_start = 0x1000;
+		iommu->geometry.aperture_start = SZ_16M;
 		iommu->geometry.aperture_end = 0xffffffff;
 
 		dev_info(drm->dev, "%s: using IOMMU\n", name);

drivers/gpu/drm/msm/msm_gpu.h

@@ -103,7 +103,7 @@ struct msm_gpu {
 
 	/* Power Control: */
 	struct regulator *gpu_reg, *gpu_cx;
-	struct clk *ebi1_clk, *grp_clks[5];
+	struct clk *ebi1_clk, *grp_clks[6];
 	uint32_t fast_rate, slow_rate, bus_freq;
 
 #ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING