diff options
author | Dave Airlie <airlied@redhat.com> | 2008-11-28 14:22:24 +1000 |
---|---|---|
committer | Dave Airlie <airlied@linux.ie> | 2008-12-29 17:47:22 +1000 |
commit | 7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a (patch) | |
tree | 1b5debcc86ff20bd5e11b42ea5c52da42214e376 /drivers/gpu/drm/radeon/radeon_cp.c | |
parent | e7f7ab45ebcb54fd5f814ea15ea079e079662f67 (diff) |
drm: move to kref per-master structures.
This is step one towards having multiple masters sharing a drm
device in order to get fast-user-switching to work.
It splits out the information associated with the drm master
into a separate kref counted structure, and allocates this when
a master opens the device node. It also allows the current master
to abdicate (say while VT switched), and a new master to take over
the hardware.
It moves the Intel and radeon drivers to using the sarea from
within the new master structures.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_cp.c')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_cp.c | 73 |
1 files changed, 58 insertions, 15 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c index dcebb4bee7a..7b37a490637 100644 --- a/drivers/gpu/drm/radeon/radeon_cp.c +++ b/drivers/gpu/drm/radeon/radeon_cp.c @@ -31,6 +31,7 @@ #include "drmP.h" #include "drm.h" +#include "drm_sarea.h" #include "radeon_drm.h" #include "radeon_drv.h" #include "r300_reg.h" @@ -667,15 +668,14 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev, RADEON_WRITE(RADEON_BUS_CNTL, tmp); } /* PCIE cards appears to not need this */ - dev_priv->sarea_priv->last_frame = dev_priv->scratch[0] = 0; - RADEON_WRITE(RADEON_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame); + dev_priv->scratch[0] = 0; + RADEON_WRITE(RADEON_LAST_FRAME_REG, 0); - dev_priv->sarea_priv->last_dispatch = dev_priv->scratch[1] = 0; - RADEON_WRITE(RADEON_LAST_DISPATCH_REG, - dev_priv->sarea_priv->last_dispatch); + dev_priv->scratch[1] = 0; + RADEON_WRITE(RADEON_LAST_DISPATCH_REG, 0); - dev_priv->sarea_priv->last_clear = dev_priv->scratch[2] = 0; - RADEON_WRITE(RADEON_LAST_CLEAR_REG, dev_priv->sarea_priv->last_clear); + dev_priv->scratch[2] = 0; + RADEON_WRITE(RADEON_LAST_CLEAR_REG, 0); radeon_do_wait_for_idle(dev_priv); @@ -871,9 +871,11 @@ static void radeon_set_pcigart(drm_radeon_private_t * dev_priv, int on) } } -static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init) +static int radeon_do_init_cp(struct drm_device *dev, drm_radeon_init_t *init, + struct drm_file *file_priv) { drm_radeon_private_t *dev_priv = dev->dev_private; + struct drm_radeon_master_private *master_priv = file_priv->master->driver_priv; DRM_DEBUG("\n"); @@ -998,8 +1000,8 @@ static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init) dev_priv->buffers_offset = init->buffers_offset; dev_priv->gart_textures_offset = init->gart_textures_offset; - dev_priv->sarea = drm_getsarea(dev); - if (!dev_priv->sarea) { + master_priv->sarea = drm_getsarea(dev); + if (!master_priv->sarea) { DRM_ERROR("could not find sarea!\n"); radeon_do_cleanup_cp(dev); return -EINVAL; @@ -1035,10 +1037,6 @@ static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init) } } - dev_priv->sarea_priv = - (drm_radeon_sarea_t *) ((u8 *) dev_priv->sarea->handle + - init->sarea_priv_offset); - #if __OS_HAS_AGP if (dev_priv->flags & RADEON_IS_AGP) { drm_core_ioremap(dev_priv->cp_ring, dev); @@ -1329,7 +1327,7 @@ int radeon_cp_init(struct drm_device *dev, void *data, struct drm_file *file_pri case RADEON_INIT_CP: case RADEON_INIT_R200_CP: case RADEON_INIT_R300_CP: - return radeon_do_init_cp(dev, init); + return radeon_do_init_cp(dev, init, file_priv); case RADEON_CLEANUP_CP: return radeon_do_cleanup_cp(dev); } @@ -1768,6 +1766,51 @@ int radeon_driver_load(struct drm_device *dev, unsigned long flags) return ret; } +int radeon_master_create(struct drm_device *dev, struct drm_master *master) +{ + struct drm_radeon_master_private *master_priv; + unsigned long sareapage; + int ret; + + master_priv = drm_calloc(1, sizeof(*master_priv), DRM_MEM_DRIVER); + if (!master_priv) + return -ENOMEM; + + /* prebuild the SAREA */ + sareapage = max(SAREA_MAX, PAGE_SIZE); + ret = drm_addmap(dev, 0, sareapage, _DRM_SHM, _DRM_CONTAINS_LOCK|_DRM_DRIVER, + &master_priv->sarea); + if (ret) { + DRM_ERROR("SAREA setup failed\n"); + return ret; + } + master_priv->sarea_priv = master_priv->sarea->handle + sizeof(struct drm_sarea); + master_priv->sarea_priv->pfCurrentPage = 0; + + master->driver_priv = master_priv; + return 0; +} + +void radeon_master_destroy(struct drm_device *dev, struct drm_master *master) +{ + struct drm_radeon_master_private *master_priv = master->driver_priv; + + if (!master_priv) + return; + + if (master_priv->sarea_priv && + master_priv->sarea_priv->pfCurrentPage != 0) + radeon_cp_dispatch_flip(dev, master); + + master_priv->sarea_priv = NULL; + if (master_priv->sarea) + drm_rmmap(dev, master_priv->sarea); + + drm_free(master_priv, sizeof(*master_priv), DRM_MEM_DRIVER); + + master->driver_priv = NULL; +} + /* Create mappings for registers and framebuffer so userland doesn't necessarily * have to find them. */ |