diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2008-10-06 12:12:49 -0400 |
|---|---|---|
| committer | Alex Deucher <alexdeucher@gmail.com> | 2008-10-06 12:12:49 -0400 |
| commit | 728d8e226f1bc12f50f710cc96bbb2a25f72ada3 (patch) | |
| tree | e4fc4e76ac94225a7e62df60e6858d16df6c0c41 | |
| parent | 6f9dfa098fed73895f4ad32f9274ffaa163d3efb (diff) | |
radeon: add comment to clarify bus mastering on PCIE chips
| -rw-r--r-- | shared-core/radeon_drv.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/shared-core/radeon_drv.h b/shared-core/radeon_drv.h index f897820c..86fb6db0 100644 --- a/shared-core/radeon_drv.h +++ b/shared-core/radeon_drv.h @@ -432,20 +432,30 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev, # define RADEON_SCISSOR_1_ENABLE (1 << 29) # define RADEON_SCISSOR_2_ENABLE (1 << 30) +/* + * PCIE radeons (rv370/rv380, rv410, r423/r430/r480, r5xx) + * don't have an explicit bus mastering disable bit. It's handled + * by the PCI D-states. PMI_BM_DIS disables D-state bus master + * handling, not bus mastering itself. + */ #define RADEON_BUS_CNTL 0x0030 -/* r1xx, r2xx, r300, r(v)350, r420, rs480 */ +/* r1xx, r2xx, r300, r(v)350, r420/r481, rs480 */ # define RADEON_BUS_MASTER_DIS (1 << 6) -/* rs400, rs690, rs740 */ +/* rs400, rs690/rs740 */ # define RS400_BUS_MASTER_DIS (1 << 14) # define RS400_MSI_REARM (1 << 20) +/* see RS480_MSI_REARM in AIC_CNTL for rs480 */ + +#define RADEON_BUS_CNTL1 0x0034 +# define RADEON_PMI_BM_DIS (1 << 2) +# define RADEON_PMI_INT_DIS (1 << 3) #define RV370_BUS_CNTL 0x004c -/* rv370, rv380, rv410, r423, r430, r480, r5xx */ # define RV370_PMI_BM_DIS (1 << 5) # define RV370_PMI_INT_DIS (1 << 6) #define RADEON_MSI_REARM_EN 0x0160 -/* rv370, rv380, rv410, r423, r430, r480, r5xx */ +/* rv370/rv380, rv410, r423/r430/r480, r5xx */ # define RV370_MSI_REARM_EN (1 << 0) #define RADEON_CLOCK_CNTL_DATA 0x000c |