diff options
| -rw-r--r-- | shared-core/i915_drv.h | 21 | ||||
| -rw-r--r-- | shared-core/i915_init.c | 132 |
2 files changed, 140 insertions, 13 deletions
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h index b1bf0469..c22ab843 100644 --- a/shared-core/i915_drv.h +++ b/shared-core/i915_drv.h @@ -318,6 +318,27 @@ extern void intel_modeset_cleanup(drm_device_t *dev); extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller); +/* + * The Bridge device's PCI config space has information about the + * fb aperture size and the amount of pre-reserved memory. + */ +#define INTEL_GMCH_CTRL 0x52 +#define INTEL_GMCH_ENABLED 0x4 +#define INTEL_GMCH_MEM_MASK 0x1 +#define INTEL_GMCH_MEM_64M 0x1 +#define INTEL_GMCH_MEM_128M 0 + +#define INTEL_855_GMCH_GMS_MASK (0x7 << 4) +#define INTEL_855_GMCH_GMS_DISABLED (0x0 << 4) +#define INTEL_855_GMCH_GMS_STOLEN_1M (0x1 << 4) +#define INTEL_855_GMCH_GMS_STOLEN_4M (0x2 << 4) +#define INTEL_855_GMCH_GMS_STOLEN_8M (0x3 << 4) +#define INTEL_855_GMCH_GMS_STOLEN_16M (0x4 << 4) +#define INTEL_855_GMCH_GMS_STOLEN_32M (0x5 << 4) + +#define INTEL_915G_GMCH_GMS_STOLEN_48M (0x6 << 4) +#define INTEL_915G_GMCH_GMS_STOLEN_64M (0x7 << 4) + #define GFX_OP_USER_INTERRUPT ((0<<29)|(2<<23)) #define GFX_OP_BREAKPOINT_INTERRUPT ((0<<29)|(1<<23)) #define CMD_REPORT_HEAD (7<<23) diff --git a/shared-core/i915_init.c b/shared-core/i915_init.c index 43c535d2..fba633fd 100644 --- a/shared-core/i915_init.c +++ b/shared-core/i915_init.c @@ -1,3 +1,12 @@ +/* + * Copyright (c) 2007 Intel Corporation + * Jesse Barnes <jesse.barnes@intel.com> + * + * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org> + * 2004 Sylvain Meyer + * + * GPL/BSD dual license + */ #include "drmP.h" #include "drm.h" #include "drm_sarea.h" @@ -5,6 +14,96 @@ #include "i915_drv.h" /** + * i915_probe_agp - get AGP bootup configuration + * @pdev: PCI device + * @aperture_size: returns AGP aperture configured size + * @preallocated_size: returns size of BIOS preallocated AGP space + * + * Since Intel integrated graphics are UMA, the BIOS has to set aside + * some RAM for the framebuffer at early boot. This code figures out + * how much was set aside so we can use it for our own purposes. + */ +int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size, + unsigned long *preallocated_size) +{ + struct pci_dev *bridge_dev; + u16 tmp = 0; + unsigned long overhead; + + bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0)); + if (!bridge_dev) { + DRM_ERROR("bridge device not found\n"); + return -1; + } + + /* Get the fb aperture size and "stolen" memory amount. */ + pci_read_config_word(bridge_dev, INTEL_GMCH_CTRL, &tmp); + pci_dev_put(bridge_dev); + + *aperture_size = 1024 * 1024; + *preallocated_size = 1024 * 1024; + + switch (pdev->device) { + case PCI_DEVICE_ID_INTEL_82915G_IG: + case PCI_DEVICE_ID_INTEL_82915GM_IG: + case PCI_DEVICE_ID_INTEL_82945G_IG: + case PCI_DEVICE_ID_INTEL_82945GM_IG: + /* 915 and 945 chipsets support a 256MB aperture. + Aperture size is determined by inspected the + base address of the aperture. */ + if (pci_resource_start(pdev, 2) & 0x08000000) + *aperture_size *= 128; + else + *aperture_size *= 256; + break; + default: + if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M) + *aperture_size *= 64; + else + *aperture_size *= 128; + break; + } + + /* + * Some of the preallocated space is taken by the GTT + * and popup. GTT is 1K per MB of aperture size, and popup is 4K. + */ + overhead = (*aperture_size / 1024) + 4096; + switch (tmp & INTEL_855_GMCH_GMS_MASK) { + case INTEL_855_GMCH_GMS_STOLEN_1M: + break; /* 1M already */ + case INTEL_855_GMCH_GMS_STOLEN_4M: + *preallocated_size *= 4; + break; + case INTEL_855_GMCH_GMS_STOLEN_8M: + *preallocated_size *= 8; + break; + case INTEL_855_GMCH_GMS_STOLEN_16M: + *preallocated_size *= 16; + break; + case INTEL_855_GMCH_GMS_STOLEN_32M: + *preallocated_size *= 32; + break; + case INTEL_915G_GMCH_GMS_STOLEN_48M: + *preallocated_size *= 48; + break; + case INTEL_915G_GMCH_GMS_STOLEN_64M: + *preallocated_size *= 64; + break; + case INTEL_855_GMCH_GMS_DISABLED: + DRM_ERROR("video memory is disabled\n"); + return -1; + default: + DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n", + tmp & INTEL_855_GMCH_GMS_MASK); + return -1; + } + *preallocated_size -= overhead; + + return 0; +} + +/** * i915_driver_load - setup chip and create an initial config * @dev: DRM device * @flags: startup flags @@ -21,7 +120,8 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags) drm_i915_init_t init; drm_buffer_object_t *entry; struct drm_framebuffer *fb; - int ret; + unsigned long agp_size, prealloc_size; + int hsize, vsize, bytes_per_pixel, size, ret; dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER); if (dev_priv == NULL) @@ -41,11 +141,13 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags) if (IS_I9XX(dev)) { dev_priv->mmiobase = drm_get_resource_start(dev, 0); dev_priv->mmiolen = drm_get_resource_len(dev, 0); - dev->mode_config.fb_base = dev_priv->baseaddr = drm_get_resource_start(dev, 2) & 0xff000000; + dev->mode_config.fb_base = dev_priv->baseaddr = + drm_get_resource_start(dev, 2) & 0xff000000; } else if (drm_get_resource_start(dev, 1)) { dev_priv->mmiobase = drm_get_resource_start(dev, 1); dev_priv->mmiolen = drm_get_resource_len(dev, 1); - dev->mode_config.fb_base = dev_priv->baseaddr = drm_get_resource_start(dev, 0) & 0xff000000; + dev->mode_config.fb_base = dev_priv->baseaddr = + drm_get_resource_start(dev, 0) & 0xff000000; } else { DRM_ERROR("Unable to find MMIO registers\n"); return -ENODEV; @@ -79,14 +181,18 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags) * Initialize the memory manager for local and AGP space */ drm_bo_driver_init(dev); - /* FIXME: initial stolen area 8M init */ -#define SCANOUT_SIZE 1024*1024*8 /* big enough for 2048x1024 32bpp */ - drm_bo_init_mm(dev, DRM_BO_MEM_PRIV0, dev->mode_config.fb_base, - SCANOUT_SIZE); + + i915_probe_agp(dev->pdev, &agp_size, &prealloc_size); + drm_bo_init_mm(dev, DRM_BO_MEM_PRIV0, dev_priv->baseaddr, + prealloc_size); /* Allocate scanout buffer and command ring */ /* FIXME: types and other args correct? */ - drm_buffer_object_create(dev, SCANOUT_SIZE, drm_bo_type_dc, + hsize = 1280; + vsize = 800; + bytes_per_pixel = 4; + size = hsize * vsize * bytes_per_pixel; + drm_buffer_object_create(dev, size, drm_bo_type_dc, DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_MEM_PRIV0 | DRM_BO_FLAG_NO_MOVE, 0, PAGE_SIZE, 0, @@ -102,11 +208,11 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags) return -EINVAL; } - fb->width = 1024; - fb->height = 768; - fb->pitch = 1024; - fb->bits_per_pixel = 32; - fb->depth = 32; + fb->width = hsize; + fb->height = vsize; + fb->pitch = hsize; + fb->bits_per_pixel = bytes_per_pixel * 8; + fb->depth = bytes_per_pixel * 8; fb->offset = entry->offset; fb->bo = entry; |