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-rw-r--r--shared-core/radeon_cp.c180
-rw-r--r--shared-core/radeon_drm.h2
-rw-r--r--shared-core/radeon_drv.h1
3 files changed, 183 insertions, 0 deletions
diff --git a/shared-core/radeon_cp.c b/shared-core/radeon_cp.c
index baca5521..cec9df59 100644
--- a/shared-core/radeon_cp.c
+++ b/shared-core/radeon_cp.c
@@ -1301,6 +1301,176 @@ int radeon_do_cleanup_cp( drm_device_t *dev )
return 0;
}
+/* This code will reinit the Radeon CP hardware after a resume from disc.
+ * AFAIK, it would be very difficult to pickle the state at suspend time, so
+ * here we make sure that all Radeon hardware initialisation is re-done without
+ * affecting running applications. This function is called radeon_do_resume_cp()
+ * as it was derived from radeon_init_cp, where most of the initialisation takes
+ * place during DRI init.
+ *
+ * This patch is NOT to be confused with my and Michel Daenzer's earlier DRI
+ * reinit work, which de- and re-initialised the complete DRI at every VT
+ * switch.
+ *
+ * Charl P. Botha <http://cpbotha.net>
+ */
+static int radeon_do_resume_cp( drm_device_t *dev)
+{
+ drm_radeon_private_t *dev_priv;
+ u32 tmp;
+ DRM_DEBUG( "\n" );
+
+ DRM_DEBUG("Starting radeon_do_resume_cp()\n");
+
+ /* get the existing dev_private */
+ dev_priv = dev->dev_private;
+
+#if !defined(PCIGART_ENABLED)
+ /* PCI support is not 100% working, so we disable it here.
+ */
+ if ( dev_priv->is_pci ) {
+ DRM_ERROR( "PCI GART not yet supported for Radeon!\n" );
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+#endif
+
+ if ( dev_priv->is_pci && !dev->sg ) {
+ DRM_ERROR( "PCI GART memory not allocated!\n" );
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( dev_priv->usec_timeout < 1 ||
+ dev_priv->usec_timeout > RADEON_MAX_USEC_TIMEOUT ) {
+ DRM_DEBUG( "TIMEOUT problem!\n" );
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( ( dev_priv->cp_mode != RADEON_CSQ_PRIBM_INDDIS ) &&
+ ( dev_priv->cp_mode != RADEON_CSQ_PRIBM_INDBM ) ) {
+ DRM_DEBUG( "BAD cp_mode (%x)!\n", dev_priv->cp_mode );
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if(!dev_priv->sarea) {
+ DRM_ERROR("could not find sarea!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if(!dev_priv->fb) {
+ DRM_ERROR("could not find framebuffer!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if(!dev_priv->mmio) {
+ DRM_ERROR("could not find mmio region!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if(!dev_priv->cp_ring) {
+ DRM_ERROR("could not find cp ring region!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if(!dev_priv->ring_rptr) {
+ DRM_ERROR("could not find ring read pointer!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if(!dev_priv->buffers) {
+ DRM_ERROR("could not find dma buffer region!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( !dev_priv->is_pci ) {
+ if(!dev_priv->agp_textures) {
+ DRM_ERROR("could not find agp texture region!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+ }
+
+ if ( !dev_priv->is_pci ) {
+ if(!dev_priv->cp_ring->handle ||
+ !dev_priv->ring_rptr->handle ||
+ !dev_priv->buffers->handle) {
+ DRM_ERROR("could not find ioremap agp regions!\n");
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(EINVAL);
+ }
+ } else {
+ DRM_DEBUG( "dev_priv->cp_ring->handle %p\n",
+ dev_priv->cp_ring->handle );
+ DRM_DEBUG( "dev_priv->ring_rptr->handle %p\n",
+ dev_priv->ring_rptr->handle );
+ DRM_DEBUG( "dev_priv->buffers->handle %p\n",
+ dev_priv->buffers->handle );
+ }
+
+
+ DRM_DEBUG( "dev_priv->agp_size %d\n",
+ dev_priv->agp_size );
+ DRM_DEBUG( "dev_priv->agp_vm_start 0x%x\n",
+ dev_priv->agp_vm_start );
+ DRM_DEBUG( "dev_priv->agp_buffers_offset 0x%lx\n",
+ dev_priv->agp_buffers_offset );
+
+#if __REALLY_HAVE_AGP
+ if ( !dev_priv->is_pci ) {
+ /* Turn off PCI GART
+ */
+ tmp = RADEON_READ( RADEON_AIC_CNTL )
+ & ~RADEON_PCIGART_TRANSLATE_EN;
+ RADEON_WRITE( RADEON_AIC_CNTL, tmp );
+ } else
+#endif
+ {
+ /* I'm not so sure about this ati_picgart_init after at resume-time... */
+ if (!DRM(ati_pcigart_init)( dev, &dev_priv->phys_pci_gart,
+ &dev_priv->bus_pci_gart)) {
+ DRM_ERROR( "failed to init PCI GART!\n" );
+ radeon_do_cleanup_cp(dev);
+ return DRM_ERR(ENOMEM);
+ }
+
+ tmp = RADEON_READ( RADEON_AIC_CNTL )
+ | RADEON_PCIGART_TRANSLATE_EN;
+ RADEON_WRITE( RADEON_AIC_CNTL, tmp );
+
+ /* set PCI GART page-table base address
+ */
+ RADEON_WRITE( RADEON_AIC_PT_BASE, dev_priv->bus_pci_gart );
+
+ /* set address range for PCI address translate
+ */
+ RADEON_WRITE( RADEON_AIC_LO_ADDR, dev_priv->agp_vm_start );
+ RADEON_WRITE( RADEON_AIC_HI_ADDR, dev_priv->agp_vm_start
+ + dev_priv->agp_size - 1);
+
+ /* Turn off AGP aperture -- is this required for PCIGART?
+ */
+ RADEON_WRITE( RADEON_MC_AGP_LOCATION, 0xffffffc0 ); /* ?? */
+ RADEON_WRITE( RADEON_AGP_COMMAND, 0 ); /* clear AGP_COMMAND */
+ }
+
+ radeon_cp_load_microcode( dev_priv );
+ radeon_cp_init_ring_buffer( dev, dev_priv );
+
+ radeon_do_engine_reset( dev );
+
+ return 0;
+}
+
+
int radeon_cp_init( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
@@ -1456,6 +1626,16 @@ int radeon_cp_idle( DRM_IOCTL_ARGS )
return radeon_do_cp_idle( dev_priv );
}
+/* Added by Charl P. Botha to call radeon_do_resume_cp().
+ */
+int radeon_cp_resume( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+
+ return radeon_do_resume_cp(dev);
+}
+
+
int radeon_engine_reset( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
diff --git a/shared-core/radeon_drm.h b/shared-core/radeon_drm.h
index 7efb3c16..c0f1e75d 100644
--- a/shared-core/radeon_drm.h
+++ b/shared-core/radeon_drm.h
@@ -385,6 +385,8 @@ typedef struct {
#define DRM_IOCTL_RADEON_INIT_HEAP DRM_IOW( 0x55, drm_radeon_mem_init_heap_t)
#define DRM_IOCTL_RADEON_IRQ_EMIT DRM_IOWR( 0x56, drm_radeon_irq_emit_t)
#define DRM_IOCTL_RADEON_IRQ_WAIT DRM_IOW( 0x57, drm_radeon_irq_wait_t)
+/* added by Charl P. Botha - see radeon_cp.c for details */
+#define DRM_IOCTL_RADEON_CP_RESUME DRM_IO(0x58)
typedef struct drm_radeon_init {
enum {
diff --git a/shared-core/radeon_drv.h b/shared-core/radeon_drv.h
index 3e3b263e..8b17b9d4 100644
--- a/shared-core/radeon_drv.h
+++ b/shared-core/radeon_drv.h
@@ -159,6 +159,7 @@ extern int radeon_cp_start( DRM_IOCTL_ARGS );
extern int radeon_cp_stop( DRM_IOCTL_ARGS );
extern int radeon_cp_reset( DRM_IOCTL_ARGS );
extern int radeon_cp_idle( DRM_IOCTL_ARGS );
+extern int radeon_cp_resume( DRM_IOCTL_ARGS );
extern int radeon_engine_reset( DRM_IOCTL_ARGS );
extern int radeon_fullscreen( DRM_IOCTL_ARGS );
extern int radeon_cp_buffers( DRM_IOCTL_ARGS );
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 18:11:09 +0000