diff options
Diffstat (limited to 'shared-core')
| -rw-r--r-- | shared-core/nv40_graph.c | 81 |
1 files changed, 34 insertions, 47 deletions
diff --git a/shared-core/nv40_graph.c b/shared-core/nv40_graph.c index 3e47bba6..2540fc5f 100644 --- a/shared-core/nv40_graph.c +++ b/shared-core/nv40_graph.c @@ -1617,25 +1617,12 @@ nv40_graph_load_context(struct nouveau_channel *chan) return 0; } -/* Some voodoo that makes context switching work without the binary driver - * initialising the card first. - * - * It is possible to effect how the context is saved from PGRAPH into a block - * of instance memory by altering the values in these tables. This may mean - * that the context layout of each chipset is slightly different (at least - * NV40 and C51 are different). It would also be possible for chipsets to - * have an identical context layout, but pull the data from different PGRAPH - * registers. - * - * TODO: decode the meaning of the magic values, may provide clues about the - * differences between the various NV40 chipsets. - * TODO: one we have a better idea of how each chipset differs, perhaps think - * about unifying these instead of providing a separate table for each - * chip. - * - * mmio-trace dumps from other nv4x/g7x/c5x cards very welcome :) +/* These blocks of "magic numbers" are actually a microcode that the GPU uses + * to control how graphics contexts get saved and restored between PRAMIN + * and PGRAPH during a context switch. We're currently using values seen + * in mmio-traces of the binary driver. */ -static uint32_t nv40_ctx_voodoo[] = { +static uint32_t nv40_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00408f65, 0x00409406, 0x0040a268, 0x00200000, 0x0060000a, 0x00700000, 0x00106000, 0x00700080, @@ -1667,7 +1654,7 @@ static uint32_t nv40_ctx_voodoo[] = { ~0 }; -static uint32_t nv41_ctx_voodoo[] = { +static uint32_t nv41_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00408f65, 0x00409306, 0x0040a068, 0x0040198f, 0x00200001, 0x0060000a, 0x00700080, 0x00104042, @@ -1698,7 +1685,7 @@ static uint32_t nv41_ctx_voodoo[] = { 0x00600009, 0x00700005, 0x00700006, 0x0060000e, ~0 }; -static uint32_t nv43_ctx_voodoo[] = { +static uint32_t nv43_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00409565, 0x00409a06, 0x0040a868, 0x00200000, 0x0060000a, 0x00700000, 0x00106000, 0x00700080, @@ -1731,7 +1718,7 @@ static uint32_t nv43_ctx_voodoo[] = { ~0 }; -static uint32_t nv44_ctx_voodoo[] = { +static uint32_t nv44_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00409a65, 0x00409f06, 0x0040ac68, 0x0040248f, 0x00200001, 0x0060000a, 0x00700080, 0x00104042, @@ -1764,7 +1751,7 @@ static uint32_t nv44_ctx_voodoo[] = { 0x00600009, 0x00700005, 0x00700006, 0x0060000e, ~0 }; -static uint32_t nv46_ctx_voodoo[] = { +static uint32_t nv46_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00408f65, 0x00409306, 0x0040a068, 0x0040198f, 0x00200001, 0x0060000a, 0x00700080, 0x00104042, @@ -1795,7 +1782,7 @@ static uint32_t nv46_ctx_voodoo[] = { 0x00600009, 0x00700005, 0x00700006, 0x0060000e, ~0 }; -static uint32_t nv47_ctx_voodoo[] = { +static uint32_t nv47_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00409265, 0x00409606, 0x0040a368, 0x0040198f, 0x00200001, 0x0060000a, 0x00700080, 0x00104042, @@ -1828,7 +1815,7 @@ static uint32_t nv47_ctx_voodoo[] = { }; //this is used for nv49 and nv4b -static uint32_t nv49_4b_ctx_voodoo[] ={ +static uint32_t nv49_4b_ctx_prog[] ={ 0x00400564, 0x00400505, 0x00408165, 0x00408206, 0x00409e68, 0x00200020, 0x0060000a, 0x00700080, 0x00104042, 0x00200020, 0x0060000a, 0x00700000, 0x001040c5, 0x00400f26, 0x00401068, 0x0060000d, 0x0070008f, 0x0070000e, @@ -1860,7 +1847,7 @@ static uint32_t nv49_4b_ctx_voodoo[] ={ }; -static uint32_t nv4a_ctx_voodoo[] = { +static uint32_t nv4a_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00409965, 0x00409e06, 0x0040ac68, 0x00200000, 0x0060000a, 0x00700000, 0x00106000, 0x00700080, @@ -1893,7 +1880,7 @@ static uint32_t nv4a_ctx_voodoo[] = { 0x00600009, 0x00700005, 0x00700006, 0x0060000e, ~0 }; -static uint32_t nv4c_ctx_voodoo[] = { +static uint32_t nv4c_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00409065, 0x00409406, 0x0040a168, 0x0040198f, 0x00200001, 0x0060000a, 0x00700080, 0x00104042, @@ -1924,7 +1911,7 @@ static uint32_t nv4c_ctx_voodoo[] = { 0x0040a405, 0x00600009, 0x00700005, 0x00700006, 0x0060000e, ~0 }; -static uint32_t nv4e_ctx_voodoo[] = { +static uint32_t nv4e_ctx_prog[] = { 0x00400889, 0x00200000, 0x0060000a, 0x00200000, 0x00300000, 0x00800001, 0x00700009, 0x0060000e, 0x00400d64, 0x00400d05, 0x00409565, 0x00409a06, 0x0040a868, 0x00200000, 0x0060000a, 0x00700000, 0x00106000, 0x00700080, @@ -1971,7 +1958,7 @@ nv40_graph_init(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = (struct drm_nouveau_private *)dev->dev_private; - uint32_t *ctx_voodoo; + uint32_t *ctx_prog; uint32_t vramsz, tmp; int i, j; @@ -1981,34 +1968,34 @@ nv40_graph_init(struct drm_device *dev) NV_PMC_ENABLE_PGRAPH); switch (dev_priv->chipset) { - case 0x40: ctx_voodoo = nv40_ctx_voodoo; break; + case 0x40: ctx_prog = nv40_ctx_prog; break; case 0x41: - case 0x42: ctx_voodoo = nv41_ctx_voodoo; break; - case 0x43: ctx_voodoo = nv43_ctx_voodoo; break; - case 0x44: ctx_voodoo = nv44_ctx_voodoo; break; - case 0x46: ctx_voodoo = nv46_ctx_voodoo; break; - case 0x47: ctx_voodoo = nv47_ctx_voodoo; break; - case 0x49: ctx_voodoo = nv49_4b_ctx_voodoo; break; - case 0x4a: ctx_voodoo = nv4a_ctx_voodoo; break; - case 0x4b: ctx_voodoo = nv49_4b_ctx_voodoo; break; + case 0x42: ctx_prog = nv41_ctx_prog; break; + case 0x43: ctx_prog = nv43_ctx_prog; break; + case 0x44: ctx_prog = nv44_ctx_prog; break; + case 0x46: ctx_prog = nv46_ctx_prog; break; + case 0x47: ctx_prog = nv47_ctx_prog; break; + case 0x49: ctx_prog = nv49_4b_ctx_prog; break; + case 0x4a: ctx_prog = nv4a_ctx_prog; break; + case 0x4b: ctx_prog = nv49_4b_ctx_prog; break; case 0x4c: - case 0x67: ctx_voodoo = nv4c_ctx_voodoo; break; - case 0x4e: ctx_voodoo = nv4e_ctx_voodoo; break; + case 0x67: ctx_prog = nv4c_ctx_prog; break; + case 0x4e: ctx_prog = nv4e_ctx_prog; break; default: - DRM_ERROR("Unknown ctx_voodoo for chipset 0x%02x\n", - dev_priv->chipset); - ctx_voodoo = NULL; + DRM_ERROR("Context program for 0x%02x unavailable\n", + dev_priv->chipset); + ctx_prog = NULL; break; } - /* Load the context voodoo onto the card */ - if (ctx_voodoo) { - DRM_DEBUG("Loading context-switch voodoo\n"); + /* Load the context program onto the card */ + if (ctx_prog) { + DRM_DEBUG("Loading context program\n"); i = 0; NV_WRITE(NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0); - while (ctx_voodoo[i] != ~0) { - NV_WRITE(NV40_PGRAPH_CTXCTL_UCODE_DATA, ctx_voodoo[i]); + while (ctx_prog[i] != ~0) { + NV_WRITE(NV40_PGRAPH_CTXCTL_UCODE_DATA, ctx_prog[i]); i++; } } |