radeon: Use request_firmware()

Loosely based on a patch by
Jaswinder Singh Rajput <jaswinderlinux@gmail.com>.

KMS support by Dave Airlie <airlied@redhat.com>.

For Radeon 100- to 500-series, firmware blobs look like:
    struct {
        __be32 datah;
        __be32 datal;
    } cp_ucode[256];

For Radeon 600-series, there are two separate firmware blobs:
    __be32 me_ucode[PM4_UCODE_SIZE * 3];
    __be32 pfp_ucode[PFP_UCODE_SIZE];

For Radeon 700-series, likewise:
    __be32 me_ucode[R700_PM4_UCODE_SIZE];
    __be32 pfp_ucode[R700_PFP_UCODE_SIZE];

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 83 insertions, 45 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index d835682..6b6cc84 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -36,10 +36,25 @@
 #include "radeon_drv.h"
 #include "r300_reg.h"
 
-#include "radeon_microcode.h"
-
 #define RADEON_FIFO_DEBUG	0
 
+/* Firmware Names */
+#define FIRMWARE_R100		"radeon/R100_cp.bin"
+#define FIRMWARE_R200		"radeon/R200_cp.bin"
+#define FIRMWARE_R300		"radeon/R300_cp.bin"
+#define FIRMWARE_R420		"radeon/R420_cp.bin"
+#define FIRMWARE_RS690		"radeon/RS690_cp.bin"
+#define FIRMWARE_RS600		"radeon/RS600_cp.bin"
+#define FIRMWARE_R520		"radeon/R520_cp.bin"
+
+MODULE_FIRMWARE(FIRMWARE_R100);
+MODULE_FIRMWARE(FIRMWARE_R200);
+MODULE_FIRMWARE(FIRMWARE_R300);
+MODULE_FIRMWARE(FIRMWARE_R420);
+MODULE_FIRMWARE(FIRMWARE_RS690);
+MODULE_FIRMWARE(FIRMWARE_RS600);
+MODULE_FIRMWARE(FIRMWARE_R520);
+
 static int radeon_do_cleanup_cp(struct drm_device * dev);
 static void radeon_do_cp_start(drm_radeon_private_t * dev_priv);
 
@@ -451,37 +466,34 @@ static void radeon_init_pipes(drm_radeon_private_t *dev_priv)
  */
 
 /* Load the microcode for the CP */
-static void radeon_cp_load_microcode(drm_radeon_private_t * dev_priv)
+static int radeon_cp_init_microcode(drm_radeon_private_t *dev_priv)
 {
-	int i;
+	struct platform_device *pdev;
+	const char *fw_name = NULL;
+	int err;
+
 	DRM_DEBUG("\n");
 
-	radeon_do_wait_for_idle(dev_priv);
+	pdev = platform_device_register_simple("radeon_cp", 0, NULL, 0);
+	err = IS_ERR(pdev);
+	if (err) {
+		printk(KERN_ERR "radeon_cp: Failed to register firmware\n");
+		return -EINVAL;
+	}
 
-	RADEON_WRITE(RADEON_CP_ME_RAM_ADDR, 0);
 	if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R100) ||
 	    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV100) ||
 	    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV200) ||
 	    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS100) ||
 	    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS200)) {
 		DRM_INFO("Loading R100 Microcode\n");
-		for (i = 0; i < 256; i++) {
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     R100_cp_microcode[i][1]);
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     R100_cp_microcode[i][0]);
-		}
+		fw_name = FIRMWARE_R100;
 	} else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R200) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV250) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV280) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS300)) {
 		DRM_INFO("Loading R200 Microcode\n");
-		for (i = 0; i < 256; i++) {
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     R200_cp_microcode[i][1]);
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     R200_cp_microcode[i][0]);
-		}
+		fw_name = FIRMWARE_R200;
 	} else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R350) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV350) ||
@@ -489,39 +501,19 @@ static void radeon_cp_load_microcode(drm_radeon_private_t * dev_priv)
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
 		DRM_INFO("Loading R300 Microcode\n");
-		for (i = 0; i < 256; i++) {
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     R300_cp_microcode[i][1]);
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     R300_cp_microcode[i][0]);
-		}
+		fw_name = FIRMWARE_R300;
 	} else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R420) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R423) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV410)) {
 		DRM_INFO("Loading R400 Microcode\n");
-		for (i = 0; i < 256; i++) {
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     R420_cp_microcode[i][1]);
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     R420_cp_microcode[i][0]);
-		}
+		fw_name = FIRMWARE_R420;
 	} else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740)) {
 		DRM_INFO("Loading RS690/RS740 Microcode\n");
-		for (i = 0; i < 256; i++) {
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     RS690_cp_microcode[i][1]);
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     RS690_cp_microcode[i][0]);
-		}
+		fw_name = FIRMWARE_RS690;
 	} else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS600) {
 		DRM_INFO("Loading RS600 Microcode\n");
-		for (i = 0; i < 256; i++) {
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     RS600_cp_microcode[i][1]);
-			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     RS600_cp_microcode[i][0]);
-		}
+		fw_name = FIRMWARE_RS600;
 	} else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R520) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV530) ||
@@ -529,11 +521,41 @@ static void radeon_cp_load_microcode(drm_radeon_private_t * dev_priv)
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV560) ||
 		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV570)) {
 		DRM_INFO("Loading R500 Microcode\n");
-		for (i = 0; i < 256; i++) {
+		fw_name = FIRMWARE_R520;
+	}
+
+	err = request_firmware(&dev_priv->me_fw, fw_name, &pdev->dev);
+	platform_device_unregister(pdev);
+	if (err) {
+		printk(KERN_ERR "radeon_cp: Failed to load firmware \"%s\"\n",
+		       fw_name);
+	} else if (dev_priv->me_fw->size % 8) {
+		printk(KERN_ERR
+		       "radeon_cp: Bogus length %zu in firmware \"%s\"\n",
+		       dev_priv->me_fw->size, fw_name);
+		err = -EINVAL;
+		release_firmware(dev_priv->me_fw);
+		dev_priv->me_fw = NULL;
+	}
+	return err;
+}
+
+static void radeon_cp_load_microcode(drm_radeon_private_t *dev_priv)
+{
+	const __be32 *fw_data;
+	int i, size;
+
+	radeon_do_wait_for_idle(dev_priv);
+
+	if (dev_priv->me_fw) {
+		size = dev_priv->me_fw->size / 4;
+		fw_data = (const __be32 *)&dev_priv->me_fw->data[0];
+		RADEON_WRITE(RADEON_CP_ME_RAM_ADDR, 0);
+		for (i = 0; i < size; i += 2) {
 			RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
-				     R520_cp_microcode[i][1]);
+				     be32_to_cpup(&fw_data[i]));
 			RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
-				     R520_cp_microcode[i][0]);
+				     be32_to_cpup(&fw_data[i + 1]));
 		}
 	}
 }
@@ -1486,6 +1508,14 @@ static int radeon_do_init_cp(struct drm_device *dev, drm_radeon_init_t *init,
 		radeon_set_pcigart(dev_priv, 1);
 	}
 
+	if (!dev_priv->me_fw) {
+		int err = radeon_cp_init_microcode(dev_priv);
+		if (err) {
+			DRM_ERROR("Failed to load firmware!\n");
+			radeon_do_cleanup_cp(dev);
+			return err;
+		}
+	}
 	radeon_cp_load_microcode(dev_priv);
 	radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
 
@@ -1755,6 +1785,14 @@ void radeon_do_release(struct drm_device * dev)
 			r600_do_cleanup_cp(dev);
 		else
 			radeon_do_cleanup_cp(dev);
+		if (dev_priv->me_fw) {
+			release_firmware(dev_priv->me_fw);
+			dev_priv->me_fw = NULL;
+		}
+		if (dev_priv->pfp_fw) {
+			release_firmware(dev_priv->pfp_fw);
+			dev_priv->pfp_fw = NULL;
+		}
 	}
 }