From f180c737d75bcbbc32f66268c17ce3b52cf4415f Mon Sep 17 00:00:00 2001 From: Rudolf Cornelissen Date: Thu, 13 Jan 2005 09:56:00 +0000 Subject: [PATCH] more DMA stuff git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10709 a95241bf-73f2-0310-859d-f6bbb57e9c96 --- .../accelerants/nvidia/engine/nv_acc_dma.c | 184 +++++++++++++++--- 1 file changed, 156 insertions(+), 28 deletions(-) diff --git a/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c b/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c index cc40b79ab5..f422f25923 100644 --- a/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c +++ b/src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c @@ -28,6 +28,19 @@ invert rectangle blit */ +static void nv_start_dma(void); +static void nv_acc_assert_fifo_dma(void); + +/* FIFO channel pointers */ +/* note: + * every instance of the accelerant needs to have it's own pointers, as the registers + * are cloned to different adress ranges for each one */ +static cmd_nv_rop5_solid* nv_rop5_solid_ptr; +static cmd_nv_image_black_rectangle* nv_image_black_rectangle_ptr; +static cmd_nv_image_pattern* nv_image_pattern_ptr; +static cmd_nv_image_blit* nv_image_blit_ptr; +static cmd_nv3_gdi_rectangle_text* nv3_gdi_rectangle_text_ptr; + status_t nv_acc_wait_idle_dma() { /* wait until engine completely idle */ @@ -47,9 +60,6 @@ status_t nv_acc_init_dma() { uint16 cnt; //fixme: move to shared info: - uint32 *cmdbuffer; - uint32 put = 0; - uint32 current; uint32 max; uint32 free; @@ -544,65 +554,183 @@ status_t nv_acc_init_dma() /* enable PFIFO caches reassign */ ACCW(PF_CACHES, 0x00000001); + /*** setup acceleration engine command shortcuts (so via fifo) ***/ + /* set object handles (b31 = 1 selects 'config' function?) */ + /* note: + * probably depending on some other setup, there are 8 or 32 FIFO channels + * available. Assuming the current setup only has 8 channels because the 'rest' + * isn't setup here... */ + si->engine.fifo.handle[0] = NV_ROP5_SOLID; + si->engine.fifo.handle[1] = NV_IMAGE_BLACK_RECTANGLE; + si->engine.fifo.handle[2] = NV_IMAGE_PATTERN; + si->engine.fifo.handle[3] = NV1_IMAGE_FROM_CPU; + si->engine.fifo.handle[4] = NV_IMAGE_BLIT; + si->engine.fifo.handle[5] = NV3_GDI_RECTANGLE_TEXT; + si->engine.fifo.handle[6] = NV1_RENDER_SOLID_LIN; + si->engine.fifo.handle[7] = NV4_DX5_TEXTURE_TRIANGLE; + /* preset no FIFO channels assigned to cmd's */ + for (cnt = 0; cnt < 0x20; cnt++) + { + si->engine.fifo.ch_ptr[cnt] = 0; + } + /* set handle's pointers to their assigned FIFO channels */ + for (cnt = 0; cnt < 0x08; cnt++) + { + si->engine.fifo.ch_ptr[((si->engine.fifo.handle[cnt]) & 0x0000001f)] = + (NVACC_FIFO + (cnt * 0x00002000)); + } + /* init DMA command buffer pointer */ - /*si->dma.*/cmdbuffer = (uint32 *)((char *)si->framebuffer + + si->engine.dma.cmdbuffer = (uint32 *)((char *)si->framebuffer + ((si->ps.memory_size - 1) & 0xffff8000)); - LOG(4,("ACC_DMA: command buffer is at adress $%08x\n", ((uint32)cmdbuffer))); + LOG(4,("ACC_DMA: command buffer is at adress $%08x\n", + ((uint32)(si->engine.dma.cmdbuffer)))); /* init FIFO via DMA command buffer: */ /* set number of cmd words (b18 - ??) and FIFO offset for first cmd word (b0 - 17) */ /* note: * this system uses auto-increments for the FIFO offset adresses. Make sure * to set new adresses if jumps are needed. */ - cmdbuffer[0x00] = (1 << 18) | 0x00000; + si->engine.dma.cmdbuffer[0x00] = (1 << 18) | 0x00000; /* send actual cmd word */ - cmdbuffer[0x01] = NV_ROP5_SOLID; + si->engine.dma.cmdbuffer[0x01] = si->engine.fifo.handle[0]; /* Raster OPeration */ /* etc.. */ - cmdbuffer[0x02] = (1 << 18) | 0x02000; - cmdbuffer[0x03] = NV_IMAGE_BLACK_RECTANGLE; + si->engine.dma.cmdbuffer[0x02] = (1 << 18) | 0x02000; + si->engine.dma.cmdbuffer[0x03] = si->engine.fifo.handle[1]; /* Clip */ - cmdbuffer[0x04] = (1 << 18) | 0x04000; - cmdbuffer[0x05] = NV_IMAGE_PATTERN; + si->engine.dma.cmdbuffer[0x04] = (1 << 18) | 0x04000; + si->engine.dma.cmdbuffer[0x05] = si->engine.fifo.handle[2]; /* Pattern */ - cmdbuffer[0x06] = (1 << 18) | 0x06000; -// cmdbuffer[0x07] = NV1_IMAGE_FROM_CPU; + si->engine.dma.cmdbuffer[0x06] = (1 << 18) | 0x06000; +// si->engine.dma.cmdbuffer[0x07] = si->engine.fifo.handle[3]; /* Pixmap (not used or 3D only?) */ //fixme: temporary so there's something valid here.. (maybe needed, don't yet know) - cmdbuffer[0x07] = NV_ROP5_SOLID; + si->engine.dma.cmdbuffer[0x07] = si->engine.fifo.handle[0]; - cmdbuffer[0x08] = (1 << 18) | 0x08000; - cmdbuffer[0x09] = NV_IMAGE_BLIT; + si->engine.dma.cmdbuffer[0x08] = (1 << 18) | 0x08000; + si->engine.dma.cmdbuffer[0x09] = si->engine.fifo.handle[4]; /* Blit */ - cmdbuffer[0x0a] = (1 << 18) | 0x0a000; - cmdbuffer[0x0b] = NV3_GDI_RECTANGLE_TEXT; + si->engine.dma.cmdbuffer[0x0a] = (1 << 18) | 0x0a000; + si->engine.dma.cmdbuffer[0x0b] = si->engine.fifo.handle[5]; /* Bitmap */ - cmdbuffer[0x0c] = (1 << 18) | 0x0c000; -// cmdbuffer[0x0d] = NV1_RENDER_SOLID_LIN; + si->engine.dma.cmdbuffer[0x0c] = (1 << 18) | 0x0c000; +// si->engine.dma.cmdbuffer[0x0d] = si->engine.fifo.handle[6]; /* Line (not used or 3D only?) */ //fixme: temporary so there's something valid here.. (maybe needed, don't yet know) - cmdbuffer[0x0d] = NV_ROP5_SOLID; + si->engine.dma.cmdbuffer[0x0d] = si->engine.fifo.handle[0]; - cmdbuffer[0x0e] = (1 << 18) | 0x0e000; -// cmdbuffer[0x0f] = NV4_DX5_TEXTURE_TRIANGLE; + si->engine.dma.cmdbuffer[0x0e] = (1 << 18) | 0x0e000; +// si->engine.dma.cmdbuffer[0x0f] = si->engine.fifo.handle[7]; /* Textured Triangle (3D only) */ //fixme: temporary so there's something valid here.. (maybe needed, don't yet know) - cmdbuffer[0x0f] = NV_ROP5_SOLID; + si->engine.dma.cmdbuffer[0x0f] = si->engine.fifo.handle[0]; + + /* initialize our local pointers */ + nv_acc_assert_fifo_dma(); /* we have put no cmd's in the DMA buffer yet (the above one's execute instantly) */ - /*si->dma.*/put = 0; + si->engine.dma.put = 0; /* the current first free adress in the DMA buffer is at offset 16 */ - /*si->dma.*/current = 16; + si->engine.dma.current = 16; /* the DMA buffer can hold 8k 32-bit words (it's 32kb in size) */ /*si->dma.*/max = 8191; /* note the current free space we have left in the DMA buffer */ - /*si->dma.*/free = /*si->dma.*/max - /*si->dma.*/current + 1; + /*si->dma.*/free = /*si->dma.*/max - si->engine.dma.current + 1; - //fixme: actually start DMA.. //fixme: add colorspace and buffer config cmd's or predefine in the non-DMA way. //fixme: overlay should stay outside the DMA buffer, also add a failsafe // space in between both functions as errors might hang the engine! + nv_start_dma(); + return B_OK; } +static void nv_start_dma(void) +{ + uint8 dummy; + + if (si->engine.dma.current != si->engine.dma.put) + { + si->engine.dma.put = si->engine.dma.current; + /* dummy read the first adress of the framebuffer: flushes MTRR-WC buffers so + * we know for sure the DMA command buffer received all data. */ + dummy = *((char *)(si->framebuffer)); + /* actually start DMA to execute all commands now in buffer */ + /* note: + * the actual FIFO channel that gets activated does not really matter: + * all FIFO fill-level info actually points at the same registers. (?) */ + nv_rop5_solid_ptr->DMAPut = (si->engine.dma.put << 2); + } +} + +/* fixme? (check this out..) + * Looks like this stuff can be very much simplified and speed-up, as it seems it's not + * nessesary to wait for the engine to become idle before re-assigning channels. + * Because the cmd handles are actually programmed _inside_ the fifo channels, it might + * well be that the assignment is buffered along with the commands that still have to + * be executed! + * (sounds very plausible to me :) */ +static void nv_acc_assert_fifo_dma(void) +{ + /* does every engine cmd this accelerant needs have a FIFO channel? */ + //fixme: can probably be optimized for both speed and channel selection... + if (!si->engine.fifo.ch_ptr[(NV_ROP5_SOLID & 0x0000001f)] || + !si->engine.fifo.ch_ptr[(NV_IMAGE_BLACK_RECTANGLE & 0x0000001f)] || + !si->engine.fifo.ch_ptr[(NV_IMAGE_PATTERN & 0x0000001f)] || + !si->engine.fifo.ch_ptr[(NV_IMAGE_BLIT & 0x0000001f)] || + !si->engine.fifo.ch_ptr[(NV3_GDI_RECTANGLE_TEXT & 0x0000001f)]) + { + uint16 cnt; + + /* no, wait until the engine is idle before re-assigning the FIFO */ + nv_acc_wait_idle_dma(); + + /* free the FIFO channels we want from the currently assigned cmd's */ + si->engine.fifo.ch_ptr[(si->engine.fifo.handle[0] & 0x0000001f)] = 0; + si->engine.fifo.ch_ptr[(si->engine.fifo.handle[1] & 0x0000001f)] = 0; + si->engine.fifo.ch_ptr[(si->engine.fifo.handle[2] & 0x0000001f)] = 0; + si->engine.fifo.ch_ptr[(si->engine.fifo.handle[4] & 0x0000001f)] = 0; + si->engine.fifo.ch_ptr[(si->engine.fifo.handle[5] & 0x0000001f)] = 0; + + /* set new object handles */ + si->engine.fifo.handle[0] = NV_ROP5_SOLID; + si->engine.fifo.handle[1] = NV_IMAGE_BLACK_RECTANGLE; + si->engine.fifo.handle[2] = NV_IMAGE_PATTERN; + si->engine.fifo.handle[4] = NV_IMAGE_BLIT; + si->engine.fifo.handle[5] = NV3_GDI_RECTANGLE_TEXT; + + /* set handle's pointers to their assigned FIFO channels */ + for (cnt = 0; cnt < 0x08; cnt++) + { + si->engine.fifo.ch_ptr[((si->engine.fifo.handle[cnt]) & 0x0000001f)] = + (NVACC_FIFO + (cnt * 0x00002000)); + } + + /* program new FIFO assignments */ + //fixme: should be done via DMA cmd buffer... + //ACCW(FIFO_CH0, si->engine.fifo.handle[0]); /* Raster OPeration */ + //ACCW(FIFO_CH1, si->engine.fifo.handle[1]); /* Clip */ + //ACCW(FIFO_CH2, si->engine.fifo.handle[2]); /* Pattern */ + //ACCW(FIFO_CH4, si->engine.fifo.handle[4]); /* Blit */ + //ACCW(FIFO_CH5, si->engine.fifo.handle[5]); /* Bitmap */ + } + + /* update our local pointers */ + nv_rop5_solid_ptr = (cmd_nv_rop5_solid*) + &(regs[(si->engine.fifo.ch_ptr[(NV_ROP5_SOLID & 0x0000001f)]) >> 2]); + + nv_image_black_rectangle_ptr = (cmd_nv_image_black_rectangle*) + &(regs[(si->engine.fifo.ch_ptr[(NV_IMAGE_BLACK_RECTANGLE & 0x0000001f)]) >> 2]); + + nv_image_pattern_ptr = (cmd_nv_image_pattern*) + &(regs[(si->engine.fifo.ch_ptr[(NV_IMAGE_PATTERN & 0x0000001f)]) >> 2]); + + nv_image_blit_ptr = (cmd_nv_image_blit*) + &(regs[(si->engine.fifo.ch_ptr[(NV_IMAGE_BLIT & 0x0000001f)]) >> 2]); + + nv3_gdi_rectangle_text_ptr = (cmd_nv3_gdi_rectangle_text*) + &(regs[(si->engine.fifo.ch_ptr[(NV3_GDI_RECTANGLE_TEXT & 0x0000001f)]) >> 2]); +} + /* screen to screen blit - i.e. move windows around and scroll within them. */ status_t nv_acc_setup_blit_dma() {