diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/drm/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/char/drm/Makefile | 3 | ||||
| -rw-r--r-- | drivers/char/drm/savage_bci.c | 1096 | ||||
| -rw-r--r-- | drivers/char/drm/savage_drm.h | 209 | ||||
| -rw-r--r-- | drivers/char/drm/savage_drv.c | 112 | ||||
| -rw-r--r-- | drivers/char/drm/savage_drv.h | 579 | ||||
| -rw-r--r-- | drivers/char/drm/savage_state.c | 1146 |
7 files changed, 3152 insertions, 0 deletions
diff --git a/drivers/char/drm/Kconfig b/drivers/char/drm/Kconfig index f31b9706ef6..56ace9d5e2a 100644 --- a/drivers/char/drm/Kconfig +++ b/drivers/char/drm/Kconfig @@ -96,3 +96,10 @@ config DRM_VIA Choose this option if you have a Via unichrome or compatible video chipset. If M is selected the module will be called via. +config DRM_SAVAGE + tristate "Savage video cards" + depends on DRM + help + Choose this option if you have a Savage3D/4/SuperSavage/Pro/Twister + chipset. If M is selected the module will be called savage. + diff --git a/drivers/char/drm/Makefile b/drivers/char/drm/Makefile index 3f0cf8e9cc5..1945138cb8f 100644 --- a/drivers/char/drm/Makefile +++ b/drivers/char/drm/Makefile @@ -17,6 +17,7 @@ i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o ffb-objs := ffb_drv.o ffb_context.o sis-objs := sis_drv.o sis_ds.o sis_mm.o +savage-objs := savage_drv.o savage_bci.o savage_state.o via-objs := via_irq.o via_drv.o via_ds.o via_map.o via_mm.o via_dma.o via_verifier.o via_video.o ifeq ($(CONFIG_COMPAT),y) @@ -37,5 +38,7 @@ obj-$(CONFIG_DRM_I830) += i830.o obj-$(CONFIG_DRM_I915) += i915.o obj-$(CONFIG_DRM_FFB) += ffb.o obj-$(CONFIG_DRM_SIS) += sis.o +obj-$(CONFIG_DRM_SAVAGE)+= savage.o obj-$(CONFIG_DRM_VIA) +=via.o + diff --git a/drivers/char/drm/savage_bci.c b/drivers/char/drm/savage_bci.c new file mode 100644 index 00000000000..2fd40bac7c9 --- /dev/null +++ b/drivers/char/drm/savage_bci.c @@ -0,0 +1,1096 @@ +/* savage_bci.c -- BCI support for Savage + * + * Copyright 2004 Felix Kuehling + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "drmP.h" +#include "savage_drm.h" +#include "savage_drv.h" + +/* Need a long timeout for shadow status updates can take a while + * and so can waiting for events when the queue is full. */ +#define SAVAGE_DEFAULT_USEC_TIMEOUT 1000000 /* 1s */ +#define SAVAGE_EVENT_USEC_TIMEOUT 5000000 /* 5s */ +#define SAVAGE_FREELIST_DEBUG 0 + +static int +savage_bci_wait_fifo_shadow(drm_savage_private_t *dev_priv, unsigned int n) +{ + uint32_t mask = dev_priv->status_used_mask; + uint32_t threshold = dev_priv->bci_threshold_hi; + uint32_t status; + int i; + +#if SAVAGE_BCI_DEBUG + if (n > dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - threshold) + DRM_ERROR("Trying to emit %d words " + "(more than guaranteed space in COB)\n", n); +#endif + + for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) { + DRM_MEMORYBARRIER(); + status = dev_priv->status_ptr[0]; + if ((status & mask) < threshold) + return 0; + DRM_UDELAY(1); + } + +#if SAVAGE_BCI_DEBUG + DRM_ERROR("failed!\n"); + DRM_INFO(" status=0x%08x, threshold=0x%08x\n", status, threshold); +#endif + return DRM_ERR(EBUSY); +} + +static int +savage_bci_wait_fifo_s3d(drm_savage_private_t *dev_priv, unsigned int n) +{ + uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n; + uint32_t status; + int i; + + for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) { + status = SAVAGE_READ(SAVAGE_STATUS_WORD0); + if ((status & SAVAGE_FIFO_USED_MASK_S3D) <= maxUsed) + return 0; + DRM_UDELAY(1); + } + +#if SAVAGE_BCI_DEBUG + DRM_ERROR("failed!\n"); + DRM_INFO(" status=0x%08x\n", status); +#endif + return DRM_ERR(EBUSY); +} + +static int +savage_bci_wait_fifo_s4(drm_savage_private_t *dev_priv, unsigned int n) +{ + uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n; + uint32_t status; + int i; + + for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) { + status = SAVAGE_READ(SAVAGE_ALT_STATUS_WORD0); + if ((status & SAVAGE_FIFO_USED_MASK_S4) <= maxUsed) + return 0; + DRM_UDELAY(1); + } + +#if SAVAGE_BCI_DEBUG + DRM_ERROR("failed!\n"); + DRM_INFO(" status=0x%08x\n", status); +#endif + return DRM_ERR(EBUSY); +} + +/* + * Waiting for events. + * + * The BIOSresets the event tag to 0 on mode changes. Therefore we + * never emit 0 to the event tag. If we find a 0 event tag we know the + * BIOS stomped on it and return success assuming that the BIOS waited + * for engine idle. + * + * Note: if the Xserver uses the event tag it has to follow the same + * rule. Otherwise there may be glitches every 2^16 events. + */ +static int +savage_bci_wait_event_shadow(drm_savage_private_t *dev_priv, uint16_t e) +{ + uint32_t status; + int i; + + for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) { + DRM_MEMORYBARRIER(); + status = dev_priv->status_ptr[1]; + if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff || + (status & 0xffff) == 0) + return 0; + DRM_UDELAY(1); + } + +#if SAVAGE_BCI_DEBUG + DRM_ERROR("failed!\n"); + DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e); +#endif + + return DRM_ERR(EBUSY); +} + +static int +savage_bci_wait_event_reg(drm_savage_private_t *dev_priv, uint16_t e) +{ + uint32_t status; + int i; + + for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) { + status = SAVAGE_READ(SAVAGE_STATUS_WORD1); + if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff || + (status & 0xffff) == 0) + return 0; + DRM_UDELAY(1); + } + +#if SAVAGE_BCI_DEBUG + DRM_ERROR("failed!\n"); + DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e); +#endif + + return DRM_ERR(EBUSY); +} + +uint16_t savage_bci_emit_event(drm_savage_private_t *dev_priv, + unsigned int flags) +{ + uint16_t count; + BCI_LOCALS; + + if (dev_priv->status_ptr) { + /* coordinate with Xserver */ + count = dev_priv->status_ptr[1023]; + if (count < dev_priv->event_counter) + dev_priv->event_wrap++; + } else { + count = dev_priv->event_counter; + } + count = (count + 1) & 0xffff; + if (count == 0) { + count++; /* See the comment above savage_wait_event_*. */ + dev_priv->event_wrap++; + } + dev_priv->event_counter = count; + if (dev_priv->status_ptr) + dev_priv->status_ptr[1023] = (uint32_t)count; + + if ((flags & (SAVAGE_WAIT_2D | SAVAGE_WAIT_3D))) { + unsigned int wait_cmd = BCI_CMD_WAIT; + if ((flags & SAVAGE_WAIT_2D)) + wait_cmd |= BCI_CMD_WAIT_2D; + if ((flags & SAVAGE_WAIT_3D)) + wait_cmd |= BCI_CMD_WAIT_3D; + BEGIN_BCI(2); + BCI_WRITE(wait_cmd); + } else { + BEGIN_BCI(1); + } + BCI_WRITE(BCI_CMD_UPDATE_EVENT_TAG | (uint32_t)count); + + return count; +} + +/* + * Freelist management + */ +static int savage_freelist_init(drm_device_t *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + drm_device_dma_t *dma = dev->dma; + drm_buf_t *buf; + drm_savage_buf_priv_t *entry; + int i; + DRM_DEBUG("count=%d\n", dma->buf_count); + + dev_priv->head.next = &dev_priv->tail; + dev_priv->head.prev = NULL; + dev_priv->head.buf = NULL; + + dev_priv->tail.next = NULL; + dev_priv->tail.prev = &dev_priv->head; + dev_priv->tail.buf = NULL; + + for (i = 0; i < dma->buf_count; i++) { + buf = dma->buflist[i]; + entry = buf->dev_private; + + SET_AGE(&entry->age, 0, 0); + entry->buf = buf; + + entry->next = dev_priv->head.next; + entry->prev = &dev_priv->head; + dev_priv->head.next->prev = entry; + dev_priv->head.next = entry; + } + + return 0; +} + +static drm_buf_t *savage_freelist_get(drm_device_t *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + drm_savage_buf_priv_t *tail = dev_priv->tail.prev; + uint16_t event; + unsigned int wrap; + DRM_DEBUG("\n"); + + UPDATE_EVENT_COUNTER(); + if (dev_priv->status_ptr) + event = dev_priv->status_ptr[1] & 0xffff; + else + event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff; + wrap = dev_priv->event_wrap; + if (event > dev_priv->event_counter) + wrap--; /* hardware hasn't passed the last wrap yet */ + + DRM_DEBUG(" tail=0x%04x %d\n", tail->age.event, tail->age.wrap); + DRM_DEBUG(" head=0x%04x %d\n", event, wrap); + + if (tail->buf && (TEST_AGE(&tail->age, event, wrap) || event == 0)) { + drm_savage_buf_priv_t *next = tail->next; + drm_savage_buf_priv_t *prev = tail->prev; + prev->next = next; + next->prev = prev; + tail->next = tail->prev = NULL; + return tail->buf; + } + + DRM_DEBUG("returning NULL, tail->buf=%p!\n", tail->buf); + return NULL; +} + +void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + drm_savage_buf_priv_t *entry = buf->dev_private, *prev, *next; + + DRM_DEBUG("age=0x%04x wrap=%d\n", entry->age.event, entry->age.wrap); + + if (entry->next != NULL || entry->prev != NULL) { + DRM_ERROR("entry already on freelist.\n"); + return; + } + + prev = &dev_priv->head; + next = prev->next; + prev->next = entry; + next->prev = entry; + entry->prev = prev; + entry->next = next; +} + +/* + * Command DMA + */ +static int savage_dma_init(drm_savage_private_t *dev_priv) +{ + unsigned int i; + + dev_priv->nr_dma_pages = dev_priv->cmd_dma->size / + (SAVAGE_DMA_PAGE_SIZE*4); + dev_priv->dma_pages = drm_alloc(sizeof(drm_savage_dma_page_t) * + dev_priv->nr_dma_pages, + DRM_MEM_DRIVER); + if (dev_priv->dma_pages == NULL) + return DRM_ERR(ENOMEM); + + for (i = 0; i < dev_priv->nr_dma_pages; ++i) { + SET_AGE(&dev_priv->dma_pages[i].age, 0, 0); + dev_priv->dma_pages[i].used = 0; + dev_priv->dma_pages[i].flushed = 0; + } + SET_AGE(&dev_priv->last_dma_age, 0, 0); + + dev_priv->first_dma_page = 0; + dev_priv->current_dma_page = 0; + + return 0; +} + +void savage_dma_reset(drm_savage_private_t *dev_priv) +{ + uint16_t event; + unsigned int wrap, i; + event = savage_bci_emit_event(dev_priv, 0); + wrap = dev_priv->event_wrap; + for (i = 0; i < dev_priv->nr_dma_pages; ++i) { + SET_AGE(&dev_priv->dma_pages[i].age, event, wrap); + dev_priv->dma_pages[i].used = 0; + dev_priv->dma_pages[i].flushed = 0; + } + SET_AGE(&dev_priv->last_dma_age, event, wrap); + dev_priv->first_dma_page = dev_priv->current_dma_page = 0; +} + +void savage_dma_wait(drm_savage_private_t *dev_priv, unsigned int page) +{ + uint16_t event; + unsigned int wrap; + + /* Faked DMA buffer pages don't age. */ + if (dev_priv->cmd_dma == &dev_priv->fake_dma) + return; + + UPDATE_EVENT_COUNTER(); + if (dev_priv->status_ptr) + event = dev_priv->status_ptr[1] & 0xffff; + else + event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff; + wrap = dev_priv->event_wrap; + if (event > dev_priv->event_counter) + wrap--; /* hardware hasn't passed the last wrap yet */ + + if (dev_priv->dma_pages[page].age.wrap > wrap || + (dev_priv->dma_pages[page].age.wrap == wrap && + dev_priv->dma_pages[page].age.event > event)) { + if (dev_priv->wait_evnt(dev_priv, + dev_priv->dma_pages[page].age.event) + < 0) + DRM_ERROR("wait_evnt failed!\n"); + } +} + +uint32_t *savage_dma_alloc(drm_savage_private_t *dev_priv, unsigned int n) +{ + unsigned int cur = dev_priv->current_dma_page; + unsigned int rest = SAVAGE_DMA_PAGE_SIZE - + dev_priv->dma_pages[cur].used; + unsigned int nr_pages = (n - rest + SAVAGE_DMA_PAGE_SIZE-1) / + SAVAGE_DMA_PAGE_SIZE; + uint32_t *dma_ptr; + unsigned int i; + + DRM_DEBUG("cur=%u, cur->used=%u, n=%u, rest=%u, nr_pages=%u\n", + cur, dev_priv->dma_pages[cur].used, n, rest, nr_pages); + + if (cur + nr_pages < dev_priv->nr_dma_pages) { + dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + + cur*SAVAGE_DMA_PAGE_SIZE + + dev_priv->dma_pages[cur].used; + if (n < rest) + rest = n; + dev_priv->dma_pages[cur].used += rest; + n -= rest; + cur++; + } else { + dev_priv->dma_flush(dev_priv); + nr_pages = (n + SAVAGE_DMA_PAGE_SIZE-1) / SAVAGE_DMA_PAGE_SIZE; + for (i = cur; i < dev_priv->nr_dma_pages; ++i) { + dev_priv->dma_pages[i].age = dev_priv->last_dma_age; + dev_priv->dma_pages[i].used = 0; + dev_priv->dma_pages[i].flushed = 0; + } + dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle; + dev_priv->first_dma_page = cur = 0; + } + for (i = cur; nr_pages > 0; ++i, --nr_pages) { +#if SAVAGE_DMA_DEBUG + if (dev_priv->dma_pages[i].used) { + DRM_ERROR("unflushed page %u: used=%u\n", + i, dev_priv->dma_pages[i].used); + } +#endif + if (n > SAVAGE_DMA_PAGE_SIZE) + dev_priv->dma_pages[i].used = SAVAGE_DMA_PAGE_SIZE; + else + dev_priv->dma_pages[i].used = n; + n -= SAVAGE_DMA_PAGE_SIZE; + } + dev_priv->current_dma_page = --i; + + DRM_DEBUG("cur=%u, cur->used=%u, n=%u\n", + i, dev_priv->dma_pages[i].used, n); + + savage_dma_wait(dev_priv, dev_priv->current_dma_page); + + return dma_ptr; +} + +static void savage_dma_flush(drm_savage_private_t *dev_priv) +{ + unsigned int first = dev_priv->first_dma_page; + unsigned int cur = dev_priv->current_dma_page; + uint16_t event; + unsigned int wrap, pad, align, len, i; + unsigned long phys_addr; + BCI_LOCALS; + + if (first == cur && + dev_priv->dma_pages[cur].used == dev_priv->dma_pages[cur].flushed) + return; + + /* pad length to multiples of 2 entries + * align start of next DMA block to multiles of 8 entries */ + pad = -dev_priv->dma_pages[cur].used & 1; + align = -(dev_priv->dma_pages[cur].used + pad) & 7; + + DRM_DEBUG("first=%u, cur=%u, first->flushed=%u, cur->used=%u, " + "pad=%u, align=%u\n", + first, cur, dev_priv->dma_pages[first].flushed, + dev_priv->dma_pages[cur].used, pad, align); + + /* pad with noops */ + if (pad) { + uint32_t *dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + + cur * SAVAGE_DMA_PAGE_SIZE + + dev_priv->dma_pages[cur].used; + dev_priv->dma_pages[cur].used += pad; + while(pad != 0) { + *dma_ptr++ = BCI_CMD_WAIT; + pad--; + } + } + + DRM_MEMORYBARRIER(); + + /* do flush ... */ + phys_addr = dev_priv->cmd_dma->offset + + (first * SAVAGE_DMA_PAGE_SIZE + + dev_priv->dma_pages[first].flushed) * 4; + len = (cur - first) * SAVAGE_DMA_PAGE_SIZE + + dev_priv->dma_pages[cur].used - + dev_priv->dma_pages[first].flushed; + + DRM_DEBUG("phys_addr=%lx, len=%u\n", + phys_addr | dev_priv->dma_type, len); + + BEGIN_BCI(3); + BCI_SET_REGISTERS(SAVAGE_DMABUFADDR, 1); + BCI_WRITE(phys_addr | dev_priv->dma_type); + BCI_DMA(len); + + /* fix alignment of the start of the next block */ + dev_priv->dma_pages[cur].used += align; + + /* age DMA pages */ + event = savage_bci_emit_event(dev_priv, 0); + wrap = dev_priv->event_wrap; + for (i = first; i < cur; ++i) { + SET_AGE(&dev_priv->dma_pages[i].age, event, wrap); + dev_priv->dma_pages[i].used = 0; + dev_priv->dma_pages[i].flushed = 0; + } + /* age the current page only when it's full */ + if (dev_priv->dma_pages[cur].used == SAVAGE_DMA_PAGE_SIZE) { + SET_AGE(&dev_priv->dma_pages[cur].age, event, wrap); + dev_priv->dma_pages[cur].used = 0; + dev_priv->dma_pages[cur].flushed = 0; + /* advance to next page */ + cur++; + if (cur == dev_priv->nr_dma_pages) + cur = 0; + dev_priv->first_dma_page = dev_priv->current_dma_page = cur; + } else { + dev_priv->first_dma_page = cur; + dev_priv->dma_pages[cur].flushed = dev_priv->dma_pages[i].used; + } + SET_AGE(&dev_priv->last_dma_age, event, wrap); + + DRM_DEBUG("first=cur=%u, cur->used=%u, cur->flushed=%u\n", cur, + dev_priv->dma_pages[cur].used, + dev_priv->dma_pages[cur].flushed); +} + +static void savage_fake_dma_flush(drm_savage_private_t *dev_priv) +{ + unsigned int i, j; + BCI_LOCALS; + + if (dev_priv->first_dma_page == dev_priv->current_dma_page && + dev_priv->dma_pages[dev_priv->current_dma_page].used == 0) + return; + + DRM_DEBUG("first=%u, cur=%u, cur->used=%u\n", + dev_priv->first_dma_page, dev_priv->current_dma_page, + dev_priv->dma_pages[dev_priv->current_dma_page].used); + + for (i = dev_priv->first_dma_page; + i <= dev_priv->current_dma_page && dev_priv->dma_pages[i].used; + ++i) { + uint32_t *dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + + i * SAVAGE_DMA_PAGE_SIZE; +#if SAVAGE_DMA_DEBUG + /* Sanity check: all pages except the last one must be full. */ + if (i < dev_priv->current_dma_page && + dev_priv->dma_pages[i].used != SAVAGE_DMA_PAGE_SIZE) { + DRM_ERROR("partial DMA page %u: used=%u", + i, dev_priv->dma_pages[i].used); + } +#endif + BEGIN_BCI(dev_priv->dma_pages[i].used); + for (j = 0; j < dev_priv->dma_pages[i].used; ++j) { + BCI_WRITE(dma_ptr[j]); + } + dev_priv->dma_pages[i].used = 0; + } + + /* reset to first page */ + dev_priv->first_dma_page = dev_priv->current_dma_page = 0; +} + +/* + * Initalize mappings. On Savage4 and SavageIX the alignment + * and size of the aperture is not suitable for automatic MTRR setup + * in drm_addmap. Therefore we do it manually before the maps are + * initialized. We also need to take care of deleting the MTRRs in + * postcleanup. + */ +int savage_preinit(drm_device_t *dev, unsigned long chipset) +{ + drm_savage_private_t *dev_priv; + unsigned long mmio_base, fb_base, fb_size, aperture_base; + /* fb_rsrc and aper_rsrc aren't really used currently, but still exist + * in case we decide we need information on the BAR for BSD in the + * future. + */ + unsigned int fb_rsrc, aper_rsrc; + int ret = 0; + + dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER); + if (dev_priv == NULL) + return DRM_ERR(ENOMEM); + + memset(dev_priv, 0, sizeof(drm_savage_private_t)); + dev->dev_private = (void *)dev_priv; + dev_priv->chipset = (enum savage_family)chipset; + + dev_priv->mtrr[0].handle = -1; + dev_priv->mtrr[1].handle = -1; + dev_priv->mtrr[2].handle = -1; + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + fb_rsrc = 0; + fb_base = drm_get_resource_start(dev, 0); + fb_size = SAVAGE_FB_SIZE_S3; + mmio_base = fb_base + SAVAGE_FB_SIZE_S3; + aper_rsrc = 0; + aperture_base = fb_base + SAVAGE_APERTURE_OFFSET; + /* this should always be true */ + if (drm_get_resource_len(dev, 0) == 0x08000000) { + /* Don't make MMIO write-cobining! We need 3 + * MTRRs. */ + dev_priv->mtrr[0].base = fb_base; + dev_priv->mtrr[0].size = 0x01000000; + dev_priv->mtrr[0].handle = mtrr_add( + dev_priv->mtrr[0].base, dev_priv->mtrr[0].size, + MTRR_TYPE_WRCOMB, 1); + dev_priv->mtrr[1].base = fb_base+0x02000000; + dev_priv->mtrr[1].size = 0x02000000; + dev_priv->mtrr[1].handle = mtrr_add( + dev_priv->mtrr[1].base, dev_priv->mtrr[1].size, + MTRR_TYPE_WRCOMB, 1); + dev_priv->mtrr[2].base = fb_base+0x04000000; + dev_priv->mtrr[2].size = 0x04000000; + dev_priv->mtrr[2].handle = mtrr_add( + dev_priv->mtrr[2].base, dev_priv->mtrr[2].size, + MTRR_TYPE_WRCOMB, 1); + } else { + DRM_ERROR("strange pci_resource_len %08lx\n", + drm_get_resource_len(dev, 0)); + } + } else if (chipset != S3_SUPERSAVAGE && chipset != S3_SAVAGE2000) { + mmio_base = drm_get_resource_start(dev, 0); + fb_rsrc = 1; + fb_base = drm_get_resource_start(dev, 1); + fb_size = SAVAGE_FB_SIZE_S4; + aper_rsrc = 1; + aperture_base = fb_base + SAVAGE_APERTURE_OFFSET; + /* this should always be true */ + if (drm_get_resource_len(dev, 1) == 0x08000000) { + /* Can use one MTRR to cover both fb and + * aperture. */ + dev_priv->mtrr[0].base = fb_base; + dev_priv->mtrr[0].size = 0x08000000; + dev_priv->mtrr[0].handle = mtrr_add( + dev_priv->mtrr[0].base, dev_priv->mtrr[0].size, + MTRR_TYPE_WRCOMB, 1); + } else { + DRM_ERROR("strange pci_resource_len %08lx\n", + drm_get_resource_len(dev, 1)); + } + } else { + mmio_base = drm_get_resource_start(dev, 0); + fb_rsrc = 1; + fb_base = drm_get_resource_start(dev, 1); + fb_size = drm_get_resource_len(dev, 1); + aper_rsrc = 2; + aperture_base = drm_get_resource_start(dev, 2); + /* Automatic MTRR setup will do the right thing. */ + } + + ret = drm_addmap(dev, mmio_base, SAVAGE_MMIO_SIZE, _DRM_REGISTERS, + _DRM_READ_ONLY, &dev_priv->mmio); + if (ret) + return ret; + + ret = drm_addmap(dev, fb_base, fb_size, _DRM_FRAME_BUFFER, + _DRM_WRITE_COMBINING, &dev_priv->fb); + if (ret) + return ret; + + ret = drm_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE, + _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING, + &dev_priv->aperture); + if (ret) + return ret; + + return ret; +} + +/* + * Delete MTRRs and free device-private data. + */ +int savage_postcleanup(drm_device_t *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + int i; + + for (i = 0; i < 3; ++i) + if (dev_priv->mtrr[i].handle >= 0) + mtrr_del(dev_priv->mtrr[i].handle, + dev_priv->mtrr[i].base, + dev_priv->mtrr[i].size); + + drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER); + + return 0; +} + +static int savage_do_init_bci(drm_device_t *dev, drm_savage_init_t *init) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + + if (init->fb_bpp != 16 && init->fb_bpp != 32) { + DRM_ERROR("invalid frame buffer bpp %d!\n", init->fb_bpp); + return DRM_ERR(EINVAL); + } + if (init->depth_bpp != 16 && init->depth_bpp != 32) { + DRM_ERROR("invalid depth buffer bpp %d!\n", init->fb_bpp); + return DRM_ERR(EINVAL); + } + if (init->dma_type != SAVAGE_DMA_AGP && + init->dma_type != SAVAGE_DMA_PCI) { + DRM_ERROR("invalid dma memory type %d!\n", init->dma_type); + return DRM_ERR(EINVAL); + } + + dev_priv->cob_size = init->cob_size; + dev_priv->bci_threshold_lo = init->bci_threshold_lo; + dev_priv->bci_threshold_hi = init->bci_threshold_hi; + dev_priv->dma_type = init->dma_type; + + dev_priv->fb_bpp = init->fb_bpp; + dev_priv->front_offset = init->front_offset; + dev_priv->front_pitch = init->front_pitch; + dev_priv->back_offset = init->back_offset; + dev_priv->back_pitch = init->back_pitch; + dev_priv->depth_bpp = init->depth_bpp; + dev_priv->depth_offset = init->depth_offset; + dev_priv->depth_pitch = init->depth_pitch; + + dev_priv->texture_offset = init->texture_offset; + dev_priv->texture_size = init->texture_size; + + DRM_GETSAREA(); + if (!dev_priv->sarea) { + DRM_ERROR("could not find sarea!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + if (init->status_offset != 0) { + dev_priv->status = drm_core_findmap(dev, init->status_offset); + if (!dev_priv->status) { + DRM_ERROR("could not find shadow status region!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + } else { + dev_priv->status = NULL; + } + if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) { + dev->agp_buffer_map = drm_core_findmap(dev, + init->buffers_offset); + if (!dev->agp_buffer_map) { + DRM_ERROR("could not find DMA buffer region!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + drm_core_ioremap(dev->agp_buffer_map, dev); + if (!dev->agp_buffer_map) { + DRM_ERROR("failed to ioremap DMA buffer region!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(ENOMEM); + } + } + if (init->agp_textures_offset) { + dev_priv->agp_textures = + drm_core_findmap(dev, init->agp_textures_offset); + if (!dev_priv->agp_textures) { + DRM_ERROR("could not find agp texture region!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + } else { + dev_priv->agp_textures = NULL; + } + + if (init->cmd_dma_offset) { + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + DRM_ERROR("command DMA not supported on " + "Savage3D/MX/IX.\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + if (dev->dma && dev->dma->buflist) { + DRM_ERROR("command and vertex DMA not supported " + "at the same time.\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + dev_priv->cmd_dma = drm_core_findmap(dev, init->cmd_dma_offset); + if (!dev_priv->cmd_dma) { + DRM_ERROR("could not find command DMA region!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + if (dev_priv->dma_type == SAVAGE_DMA_AGP) { + if (dev_priv->cmd_dma->type != _DRM_AGP) { + DRM_ERROR("AGP command DMA region is not a " + "_DRM_AGP map!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + drm_core_ioremap(dev_priv->cmd_dma, dev); + if (!dev_priv->cmd_dma->handle) { + DRM_ERROR("failed to ioremap command " + "DMA region!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(ENOMEM); + } + } else if (dev_priv->cmd_dma->type != _DRM_CONSISTENT) { + DRM_ERROR("PCI command DMA region is not a " + "_DRM_CONSISTENT map!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(EINVAL); + } + } else { + dev_priv->cmd_dma = NULL; + } + + dev_priv->dma_flush = savage_dma_flush; + if (!dev_priv->cmd_dma) { + DRM_DEBUG("falling back to faked command DMA.\n"); + dev_priv->fake_dma.offset = 0; + dev_priv->fake_dma.size = SAVAGE_FAKE_DMA_SIZE; + dev_priv->fake_dma.type = _DRM_SHM; + dev_priv->fake_dma.handle = drm_alloc(SAVAGE_FAKE_DMA_SIZE, + DRM_MEM_DRIVER); + if (!dev_priv->fake_dma.handle) { + DRM_ERROR("could not allocate faked DMA buffer!\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(ENOMEM); + } + dev_priv->cmd_dma = &dev_priv->fake_dma; + dev_priv->dma_flush = savage_fake_dma_flush; + } + + dev_priv->sarea_priv = + (drm_savage_sarea_t *)((uint8_t *)dev_priv->sarea->handle + + init->sarea_priv_offset); + + /* setup bitmap descriptors */ + { + unsigned int color_tile_format; + unsigned int depth_tile_format; + unsigned int front_stride, back_stride, depth_stride; + if (dev_priv->chipset <= S3_SAVAGE4) { + color_tile_format = dev_priv->fb_bpp == 16 ? + SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP; + depth_tile_format = dev_priv->depth_bpp == 16 ? + SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP; + } else { + color_tile_format = SAVAGE_BD_TILE_DEST; + depth_tile_format = SAVAGE_BD_TILE_DEST; + } + front_stride = dev_priv->front_pitch / (dev_priv->fb_bpp/8); + back_stride = dev_priv-> back_pitch / (dev_priv->fb_bpp/8); + depth_stride = dev_priv->depth_pitch / (dev_priv->depth_bpp/8); + + dev_priv->front_bd = front_stride | SAVAGE_BD_BW_DISABLE | + (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) | + (color_tile_format << SAVAGE_BD_TILE_SHIFT); + + dev_priv-> back_bd = back_stride | SAVAGE_BD_BW_DISABLE | + (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) | + (color_tile_format << SAVAGE_BD_TILE_SHIFT); + + dev_priv->depth_bd = depth_stride | SAVAGE_BD_BW_DISABLE | + (dev_priv->depth_bpp << SAVAGE_BD_BPP_SHIFT) | + (depth_tile_format << SAVAGE_BD_TILE_SHIFT); + } + + /* setup status and bci ptr */ + dev_priv->event_counter = 0; + dev_priv->event_wrap = 0; + dev_priv->bci_ptr = (volatile uint32_t *) + ((uint8_t *)dev_priv->mmio->handle + SAVAGE_BCI_OFFSET); + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S3D; + } else { + dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S4; + } + if (dev_priv->status != NULL) { + dev_priv->status_ptr = + (volatile uint32_t *)dev_priv->status->handle; + dev_priv->wait_fifo = savage_bci_wait_fifo_shadow; + dev_priv->wait_evnt = savage_bci_wait_event_shadow; + dev_priv->status_ptr[1023] = dev_priv->event_counter; + } else { + dev_priv->status_ptr = NULL; + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + dev_priv->wait_fifo = savage_bci_wait_fifo_s3d; + } else { + dev_priv->wait_fifo = savage_bci_wait_fifo_s4; + } + dev_priv->wait_evnt = savage_bci_wait_event_reg; + } + + /* cliprect functions */ + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) + dev_priv->emit_clip_rect = savage_emit_clip_rect_s3d; + else + dev_priv->emit_clip_rect = savage_emit_clip_rect_s4; + + if (savage_freelist_init(dev) < 0) { + DRM_ERROR("could not initialize freelist\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(ENOMEM); + } + + if (savage_dma_init(dev_priv) < 0) { + DRM_ERROR("could not initialize command DMA\n"); + savage_do_cleanup_bci(dev); + return DRM_ERR(ENOMEM); + } + + return 0; +} + +int savage_do_cleanup_bci(drm_device_t *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + + if (dev_priv->cmd_dma == &dev_priv->fake_dma) { + if (dev_priv->fake_dma.handle) + drm_free(dev_priv->fake_dma.handle, + SAVAGE_FAKE_DMA_SIZE, DRM_MEM_DRIVER); + } else if (dev_priv->cmd_dma && dev_priv->cmd_dma->handle && + dev_priv->cmd_dma->type == _DRM_AGP && + dev_priv->dma_type == SAVAGE_DMA_AGP) + drm_core_ioremapfree(dev_priv->cmd_dma, dev); + + if (dev_priv->dma_type == SAVAGE_DMA_AGP && + dev->agp_buffer_map && dev->agp_buffer_map->handle) { + drm_core_ioremapfree(dev->agp_buffer_map, dev); + /* make sure the next instance (which may be running + * in PCI mode) doesn't try to use an old + * agp_buffer_map. */ + dev->agp_buffer_map = NULL; + } + + if (dev_priv->dma_pages) + drm_free(dev_priv->dma_pages, + sizeof(drm_savage_dma_page_t)*dev_priv->nr_dma_pages, + DRM_MEM_DRIVER); + + return 0; +} + +static int savage_bci_init(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_savage_init_t init; + + LOCK_TEST_WITH_RETURN(dev, filp); + + DRM_COPY_FROM_USER_IOCTL(init, (drm_savage_init_t __user *)data, + sizeof(init)); + + switch (init.func) { + case SAVAGE_INIT_BCI: + return savage_do_init_bci(dev, &init); + case SAVAGE_CLEANUP_BCI: + return savage_do_cleanup_bci(dev); + } + + return DRM_ERR(EINVAL); +} + +static int savage_bci_event_emit(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_savage_private_t *dev_priv = dev->dev_private; + drm_savage_event_emit_t event; + + DRM_DEBUG("\n"); + + LOCK_TEST_WITH_RETURN(dev, filp); + + DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_emit_t __user *)data, + sizeof(event)); + + event.count = savage_bci_emit_event(dev_priv, event.flags); + event.count |= dev_priv->event_wrap << 16; + DRM_COPY_TO_USER_IOCTL(&((drm_savage_event_emit_t __user *)data)->count, + event.count, sizeof(event.count)); + return 0; +} + +static int savage_bci_event_wait(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_savage_private_t *dev_priv = dev->dev_private; + drm_savage_event_wait_t event; + unsigned int event_e, hw_e; + unsigned int event_w, hw_w; + + DRM_DEBUG("\n"); + + DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_wait_t __user *)data, + sizeof(event)); + + UPDATE_EVENT_COUNTER(); + if (dev_priv->status_ptr) + hw_e = dev_priv->status_ptr[1] & 0xffff; + else + hw_e = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff; + hw_w = dev_priv->event_wrap; + if (hw_e > dev_priv->event_counter) + hw_w--; /* hardware hasn't passed the last wrap yet */ + + event_e = event.count & 0xffff; + event_w = event.count >> 16; + + /* Don't need to wait if + * - event counter wrapped since the event was emitted or + * - the hardware has advanced up to or over the event to wait for. + */ + if (event_w < hw_w || (event_w == hw_w && event_e <= hw_e) ) + return 0; + else + return dev_priv->wait_evnt(dev_priv, event_e); +} + +/* + * DMA buffer management + */ + +static int savage_bci_get_buffers(DRMFILE filp, drm_device_t *dev, drm_dma_t *d) +{ + drm_buf_t *buf; + int i; + + for (i = d->granted_count; i < d->request_count; i++) { + buf = savage_freelist_get(dev); + if (!buf) + return DRM_ERR(EAGAIN); + + buf->filp = filp; + + if (DRM_COPY_TO_USER(&d->request_indices[i], + &buf->idx, sizeof(buf->idx))) + return DRM_ERR(EFAULT); + if (DRM_COPY_TO_USER(&d->request_sizes[i], + &buf->total, sizeof(buf->total))) + return DRM_ERR(EFAULT); + + d->granted_count++; + } + return 0; +} + +int savage_bci_buffers(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_device_dma_t *dma = dev->dma; + drm_dma_t d; + int ret = 0; + + LOCK_TEST_WITH_RETURN(dev, filp); + + DRM_COPY_FROM_USER_IOCTL(d, (drm_dma_t __user *)data, sizeof(d)); + + /* Please don't send us buffers. + */ + if (d.send_count != 0) { + DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n", + DRM_CURRENTPID, d.send_count); + return DRM_ERR(EINVAL); + } + + /* We'll send you buffers. + */ + if (d.request_count < 0 || d.request_count > dma->buf_count) { + DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n", + DRM_CURRENTPID, d.request_count, dma->buf_count); + return DRM_ERR(EINVAL); + } + + d.granted_count = 0; + + if (d.request_count) { + ret = savage_bci_get_buffers(filp, dev, &d); + } + + DRM_COPY_TO_USER_IOCTL((drm_dma_t __user *)data, d, sizeof(d)); + + return ret; +} + +void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp) { + drm_device_dma_t *dma = dev->dma; + drm_savage_private_t *dev_priv = dev->dev_private; + int i; + + if (!dma) + return; + if (!dev_priv) + return; + if (!dma->buflist) + return; + + /*i830_flush_queue(dev);*/ + + for (i = 0; i < dma->buf_count; i++) { + drm_buf_t *buf = dma->buflist[i]; + drm_savage_buf_priv_t *buf_priv = buf->dev_private; + + if (buf->filp == filp && buf_priv && + buf_priv->next == NULL && buf_priv->prev == NULL) { + uint16_t event; + DRM_DEBUG("reclaimed from client\n"); + event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D); + SET_AGE(&buf_priv->age, event, dev_priv->event_wrap); + savage_freelist_put(dev, buf); + } + } + + drm_core_reclaim_buffers(dev, filp); +} + + +drm_ioctl_desc_t savage_ioctls[] = { + [DRM_IOCTL_NR(DRM_SAVAGE_BCI_INIT)] = {savage_bci_init, 1, 1}, + [DRM_IOCTL_NR(DRM_SAVAGE_BCI_CMDBUF)] = {savage_bci_cmdbuf, 1, 0}, + [DRM_IOCTL_NR(DRM_SAVAGE_BCI_EVENT_EMIT)] = {savage_bci_event_emit, 1, 0}, + [DRM_IOCTL_NR(DRM_SAVAGE_BCI_EVENT_WAIT)] = {savage_bci_event_wait, 1, 0}, +}; + +int savage_max_ioctl = DRM_ARRAY_SIZE(savage_ioctls); diff --git a/drivers/char/drm/savage_drm.h b/drivers/char/drm/savage_drm.h new file mode 100644 index 00000000000..6526c9aa758 --- /dev/null +++ b/drivers/char/drm/savage_drm.h @@ -0,0 +1,209 @@ +/* savage_drm.h -- Public header for the savage driver + * + * Copyright 2004 Felix Kuehling + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __SAVAGE_DRM_H__ +#define __SAVAGE_DRM_H__ + +#ifndef __SAVAGE_SAREA_DEFINES__ +#define __SAVAGE_SAREA_DEFINES__ + +/* 2 heaps (1 for card, 1 for agp), each divided into upto 128 + * regions, subject to a minimum region size of (1<<16) == 64k. + * + * Clients may subdivide regions internally, but when sharing between + * clients, the region size is the minimum granularity. + */ + +#define SAVAGE_CARD_HEAP 0 +#define SAVAGE_AGP_HEAP 1 +#define SAVAGE_NR_TEX_HEAPS 2 +#define SAVAGE_NR_TEX_REGIONS 16 +#define SAVAGE_LOG_MIN_TEX_REGION_SIZE 16 + +#endif /* __SAVAGE_SAREA_DEFINES__ */ + +typedef struct _drm_savage_sarea { + /* LRU lists for texture memory in agp space and on the card. + */ + drm_tex_region_t texList[SAVAGE_NR_TEX_HEAPS][SAVAGE_NR_TEX_REGIONS+1]; + unsigned int texAge[SAVAGE_NR_TEX_HEAPS]; + + /* Mechanism to validate card state. + */ + int ctxOwner; +} drm_savage_sarea_t, *drm_savage_sarea_ptr; + +/* Savage-specific ioctls + */ +#define DRM_SAVAGE_BCI_INIT 0x00 +#define DRM_SAVAGE_BCI_CMDBUF 0x01 +#define DRM_SAVAGE_BCI_EVENT_EMIT 0x02 +#define DRM_SAVAGE_BCI_EVENT_WAIT 0x03 + +#define DRM_IOCTL_SAVAGE_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_INIT, drm_savage_init_t) +#define DRM_IOCTL_SAVAGE_CMDBUF DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_CMDBUF, drm_savage_cmdbuf_t) +#define DRM_IOCTL_SAVAGE_EVENT_EMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_EMIT, drm_savage_event_emit_t) +#define DRM_IOCTL_SAVAGE_EVENT_WAIT DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_WAIT, drm_savage_event_wait_t) + +#define SAVAGE_DMA_PCI 1 +#define SAVAGE_DMA_AGP 3 +typedef struct drm_savage_init { + enum { + SAVAGE_INIT_BCI = 1, + SAVAGE_CLEANUP_BCI = 2 + } func; + unsigned int sarea_priv_offset; + + /* some parameters */ + unsigned int cob_size; + unsigned int bci_threshold_lo, bci_threshold_hi; + unsigned int dma_type; + + /* frame buffer layout */ + unsigned int fb_bpp; + unsigned int front_offset, front_pitch; + unsigned int back_offset, back_pitch; + unsigned int depth_bpp; + unsigned int depth_offset, depth_pitch; + + /* local textures */ + unsigned int texture_offset; + unsigned int texture_size; + + /* physical locations of non-permanent maps */ + unsigned long status_offset; + unsigned long buffers_offset; + unsigned long agp_textures_offset; + unsigned long cmd_dma_offset; +} drm_savage_init_t; + +typedef union drm_savage_cmd_header drm_savage_cmd_header_t; +typedef struct drm_savage_cmdbuf { + /* command buffer in client's address space */ + drm_savage_cmd_header_t __user *cmd_addr; + unsigned int size; /* size of the command buffer in 64bit units */ + + unsigned int dma_idx; /* DMA buffer index to use */ + int discard; /* discard DMA buffer when done */ + /* vertex buffer in client's address space */ + unsigned int __user *vb_addr; + unsigned int vb_size; /* size of client vertex buffer in bytes */ + unsigned int vb_stride; /* stride of vertices in 32bit words */ + /* boxes in client's address space */ + drm_clip_rect_t __user *box_addr; + unsigned int nbox; /* number of clipping boxes */ +} drm_savage_cmdbuf_t; + +#define SAVAGE_WAIT_2D 0x1 /* wait for 2D idle before updating event tag */ +#define SAVAGE_WAIT_3D 0x2 /* wait for 3D idle before updating event tag */ +#define SAVAGE_WAIT_IRQ 0x4 /* emit or wait for IRQ, not implemented yet */ +typedef struct drm_savage_event { + unsigned int count; + unsigned int flags; +} drm_savage_event_emit_t, drm_savage_event_wait_t; + +/* Commands for the cmdbuf ioctl + */ +#define SAVAGE_CMD_STATE 0 /* a range of state registers */ +#define SAVAGE_CMD_DMA_PRIM 1 /* vertices from DMA buffer */ +#define SAVAGE_CMD_VB_PRIM 2 /* vertices from client vertex buffer */ +#define SAVAGE_CMD_DMA_IDX 3 /* indexed vertices from DMA buffer */ +#define SAVAGE_CMD_VB_IDX 4 /* indexed vertices client vertex buffer */ +#define SAVAGE_CMD_CLEAR 5 /* clear buffers */ +#define SAVAGE_CMD_SWAP 6 /* swap buffers */ + +/* Primitive types +*/ +#define SAVAGE_PRIM_TRILIST 0 /* triangle list */ +#define SAVAGE_PRIM_TRISTRIP 1 /* triangle strip */ +#define SAVAGE_PRIM_TRIFAN 2 /* triangle fan */ +#define SAVAGE_PRIM_TRILIST_201 3 /* reorder verts for correct flat + * shading on s3d */ + +/* Skip flags (vertex format) + */ +#define SAVAGE_SKIP_Z 0x01 +#define SAVAGE_SKIP_W 0x02 +#define SAVAGE_SKIP_C0 0x04 +#define SAVAGE_SKIP_C1 0x08 +#define SAVAGE_SKIP_S0 0x10 +#define SAVAGE_SKIP_T0 0x20 +#define SAVAGE_SKIP_ST0 0x30 +#define SAVAGE_SKIP_S1 0x40 +#define SAVAGE_SKIP_T1 0x80 +#define SAVAGE_SKIP_ST1 0xc0 +#define SAVAGE_SKIP_ALL_S3D 0x3f +#define SAVAGE_SKIP_ALL_S4 0xff + +/* Buffer names for clear command + */ +#define SAVAGE_FRONT 0x1 +#define SAVAGE_BACK 0x2 +#define SAVAGE_DEPTH 0x4 + +/* 64-bit command header + */ +union drm_savage_cmd_header { + struct { + unsigned char cmd; /* command */ + unsigned char pad0; + unsigned short pad1; + unsigned short pad2; + unsigned short pad3; + } cmd; /* generic */ + struct { + unsigned char cmd; + unsigned char global; /* need idle engine? */ + unsigned short count; /* number of consecutive registers */ + unsigned short start; /* first register */ + unsigned short pad3; + } state; /* SAVAGE_CMD_STATE */ + struct { + unsigned char cmd; + unsigned char prim; /* primitive type */ + unsigned short skip; /* vertex format (skip flags) */ + unsigned short count; /* number of vertices */ + unsigned short start; /* first vertex in DMA/vertex buffer */ + } prim; /* SAVAGE_CMD_DMA_PRIM, SAVAGE_CMD_VB_PRIM */ + struct { + unsigned char cmd; + unsigned char prim; + unsigned short skip; + unsigned short count; /* number of indices that follow */ + unsigned short pad3; + } idx; /* SAVAGE_CMD_DMA_IDX, SAVAGE_CMD_VB_IDX */ + struct { + unsigned char cmd; + unsigned char pad0; + unsigned short pad1; + unsigned int flags; + } clear0; /* SAVAGE_CMD_CLEAR */ + struct { + unsigned int mask; + unsigned int value; + } clear1; /* SAVAGE_CMD_CLEAR data */ +}; + +#endif diff --git a/drivers/char/drm/savage_drv.c b/drivers/char/drm/savage_drv.c new file mode 100644 index 00000000000..ac8d270427c --- /dev/null +++ b/drivers/char/drm/savage_drv.c @@ -0,0 +1,112 @@ +/* savage_drv.c -- Savage driver for Linux + * + * Copyright 2004 Felix Kuehling + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <linux/config.h> +#include "drmP.h" +#include "savage_drm.h" +#include "savage_drv.h" + +#include "drm_pciids.h" + +static int postinit( struct drm_device *dev, unsigned long flags ) +{ + DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d: %s\n", + DRIVER_NAME, + DRIVER_MAJOR, + DRIVER_MINOR, + DRIVER_PATCHLEVEL, + DRIVER_DATE, + dev->primary.minor, + pci_pretty_name(dev->pdev) + ); + return 0; +} + +static int version( drm_version_t *version ) +{ + int len; + + version->version_major = DRIVER_MAJOR; + version->version_minor = DRIVER_MINOR; + version->version_patchlevel = DRIVER_PATCHLEVEL; + DRM_COPY( version->name, DRIVER_NAME ); + DRM_COPY( version->date, DRIVER_DATE ); + DRM_COPY( version->desc, DRIVER_DESC ); + return 0; +} + +static struct pci_device_id pciidlist[] = { + savage_PCI_IDS +}; + +extern drm_ioctl_desc_t savage_ioctls[]; +extern int savage_max_ioctl; + +static struct drm_driver driver = { + .driver_features = + DRIVER_USE_AGP | DRIVER_USE_MTRR | + DRIVER_HAVE_DMA | DRIVER_PCI_DMA, + .dev_priv_size = sizeof(drm_savage_buf_priv_t), + .preinit = savage_preinit, + .postinit = postinit, + .postcleanup = savage_postcleanup, + .reclaim_buffers = savage_reclaim_buffers, + .get_map_ofs = drm_core_get_map_ofs, + .get_reg_ofs = drm_core_get_reg_ofs, + .version = version, + .ioctls = savage_ioctls, + .dma_ioctl = savage_bci_buffers, + .fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .ioctl = drm_ioctl, + .mmap = drm_mmap, + .poll = drm_poll, + .fasync = drm_fasync, + }, + .pci_driver = { + .name = DRIVER_NAME, + .id_table = pciidlist, + } +}; + +static int __init savage_init(void) +{ + driver.num_ioctls = savage_max_ioctl; + return drm_init(&driver); +} + +static void __exit savage_exit(void) +{ + drm_exit(&driver); +} + +module_init(savage_init); +module_exit(savage_exit); + +MODULE_AUTHOR( DRIVER_AUTHOR ); +MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_LICENSE("GPL and additional rights"); diff --git a/drivers/char/drm/savage_drv.h b/drivers/char/drm/savage_drv.h new file mode 100644 index 00000000000..a4543494465 --- /dev/null +++ b/drivers/char/drm/savage_drv.h @@ -0,0 +1,579 @@ +/* savage_drv.h -- Private header for the savage driver + * + * Copyright 2004 Felix Kuehling + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __SAVAGE_DRV_H__ +#define __SAVAGE_DRV_H__ + +#define DRIVER_AUTHOR "Felix Kuehling" + +#define DRIVER_NAME "savage" +#define DRIVER_DESC "Savage3D/MX/IX, Savage4, SuperSavage, Twister, ProSavage[DDR]" +#define DRIVER_DATE "20050313" + +#define DRIVER_MAJOR 2 +#define DRIVER_MINOR 4 +#define DRIVER_PATCHLEVEL 1 +/* Interface history: + * + * 1.x The DRM driver from the VIA/S3 code drop, basically a dummy + * 2.0 The first real DRM + * 2.1 Scissors registers managed by the DRM, 3D operations clipped by + * cliprects of the cmdbuf ioctl + * 2.2 Implemented SAVAGE_CMD_DMA_IDX and SAVAGE_CMD_VB_IDX + * 2.3 Event counters used by BCI_EVENT_EMIT/WAIT ioctls are now 32 bits + * wide and thus very long lived (unlikely to ever wrap). The size + * in the struct was 32 bits before, but only 16 bits were used + * 2.4 Implemented command DMA. Now drm_savage_init_t.cmd_dma_offset is + * actually used + */ + +typedef struct drm_savage_age { + uint16_t event; + unsigned int wrap; +} drm_savage_age_t; + +typedef struct drm_savage_buf_priv { + struct drm_savage_buf_priv *next; + struct drm_savage_buf_priv *prev; + drm_savage_age_t age; + drm_buf_t *buf; +} drm_savage_buf_priv_t; + +typedef struct drm_savage_dma_page { + drm_savage_age_t age; + unsigned int used, flushed; +} drm_savage_dma_page_t; +#define SAVAGE_DMA_PAGE_SIZE 1024 /* in dwords */ +/* Fake DMA buffer size in bytes. 4 pages. Allows a maximum command + * size of 16kbytes or 4k entries. Minimum requirement would be + * 10kbytes for 255 40-byte vertices in one drawing command. */ +#define SAVAGE_FAKE_DMA_SIZE (SAVAGE_DMA_PAGE_SIZE*4*4) + +/* interesting bits of hardware state that are saved in dev_priv */ +typedef union { + struct drm_savage_common_state { + uint32_t vbaddr; + } common; + struct { + unsigned char pad[sizeof(struct drm_savage_common_state)]; + uint32_t texctrl, texaddr; + uint32_t scstart, new_scstart; + uint32_t scend, new_scend; + } s3d; + struct { + unsigned char pad[sizeof(struct drm_savage_common_state)]; + uint32_t texdescr, texaddr0, texaddr1; + uint32_t drawctrl0, new_drawctrl0; + uint32_t drawctrl1, new_drawctrl1; + } s4; +} drm_savage_state_t; + +/* these chip tags should match the ones in the 2D driver in savage_regs.h. */ +enum savage_family { + S3_UNKNOWN = 0, + S3_SAVAGE3D, + S3_SAVAGE_MX, + S3_SAVAGE4, + S3_PROSAVAGE, + S3_TWISTER, + S3_PROSAVAGEDDR, + S3_SUPERSAVAGE, + S3_SAVAGE2000, + S3_LAST +}; + +#define S3_SAVAGE3D_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX)) + +#define S3_SAVAGE4_SERIES(chip) ((chip==S3_SAVAGE4) \ + || (chip==S3_PROSAVAGE) \ + || (chip==S3_TWISTER) \ + || (chip==S3_PROSAVAGEDDR)) + +#define S3_SAVAGE_MOBILE_SERIES(chip) ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE)) + +#define S3_SAVAGE_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE2000)) + +#define S3_MOBILE_TWISTER_SERIES(chip) ((chip==S3_TWISTER) \ + ||(chip==S3_PROSAVAGEDDR)) + +/* flags */ +#define SAVAGE_IS_AGP 1 + +typedef struct drm_savage_private { + drm_savage_sarea_t *sarea_priv; + + drm_savage_buf_priv_t head, tail; + + /* who am I? */ + enum savage_family chipset; + + unsigned int cob_size; + unsigned int bci_threshold_lo, bci_threshold_hi; + unsigned int dma_type; + + /* frame buffer layout */ + unsigned int fb_bpp; + unsigned int front_offset, front_pitch; + unsigned int back_offset, back_pitch; + unsigned int depth_bpp; + unsigned int depth_offset, depth_pitch; + + /* bitmap descriptors for swap and clear */ + unsigned int front_bd, back_bd, depth_bd; + + /* local textures */ + unsigned int texture_offset; + unsigned int texture_size; + + /* memory regions in physical memory */ + drm_local_map_t *sarea; + drm_local_map_t *mmio; + drm_local_map_t *fb; + drm_local_map_t *aperture; + drm_local_map_t *status; + drm_local_map_t *agp_textures; + drm_local_map_t *cmd_dma; + drm_local_map_t fake_dma; + + struct { + int handle; + unsigned long base, size; + } mtrr[3]; + + /* BCI and status-related stuff */ + volatile uint32_t *status_ptr, *bci_ptr; + uint32_t status_used_mask; + uint16_t event_counter; + unsigned int event_wrap; + + /* Savage4 command DMA */ + drm_savage_dma_page_t *dma_pages; + unsigned int nr_dma_pages, first_dma_page, current_dma_page; + drm_savage_age_t last_dma_age; + + /* saved hw state for global/local check on S3D */ + uint32_t hw_draw_ctrl, hw_zbuf_ctrl; + /* and for scissors (global, so don't emit if not changed) */ + uint32_t hw_scissors_start, hw_scissors_end; + + drm_savage_state_t state; + + /* after emitting a wait cmd Savage3D needs 63 nops before next DMA */ + unsigned int waiting; + + /* config/hardware-dependent function pointers */ + int (*wait_fifo)(struct drm_savage_private *dev_priv, unsigned int n); + int (*wait_evnt)(struct drm_savage_private *dev_priv, uint16_t e); + /* Err, there is a macro wait_event in include/linux/wait.h. + * Avoid unwanted macro expansion. */ + void (*emit_clip_rect)(struct drm_savage_private *dev_priv, + drm_clip_rect_t *pbox); + void (*dma_flush)(struct drm_savage_private *dev_priv); +} drm_savage_private_t; + +/* ioctls */ +extern int savage_bci_cmdbuf(DRM_IOCTL_ARGS); +extern int savage_bci_buffers(DRM_IOCTL_ARGS); + +/* BCI functions */ +extern uint16_t savage_bci_emit_event(drm_savage_private_t *dev_priv, + unsigned int flags); +extern void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf); +extern void savage_dma_reset(drm_savage_private_t *dev_priv); +extern void savage_dma_wait(drm_savage_private_t *dev_priv, unsigned int page); +extern uint32_t *savage_dma_alloc(drm_savage_private_t *dev_priv, + unsigned int n); +extern int savage_preinit(drm_device_t *dev, unsigned long chipset); +extern int savage_postcleanup(drm_device_t *dev); +extern int savage_do_cleanup_bci(drm_device_t *dev); +extern void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp); + +/* state functions */ +extern void savage_emit_clip_rect_s3d(drm_savage_private_t *dev_priv, + drm_clip_rect_t *pbox); +extern void savage_emit_clip_rect_s4(drm_savage_private_t *dev_priv, + drm_clip_rect_t *pbox); + +#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */ +#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */ +#define SAVAGE_MMIO_SIZE 0x00080000 /* 512kB */ +#define SAVAGE_APERTURE_OFFSET 0x02000000 /* 32MB */ +#define SAVAGE_APERTURE_SIZE 0x05000000 /* 5 tiled surfaces, 16MB each */ + +#define SAVAGE_BCI_OFFSET 0x00010000 /* offset of the BCI region + * inside the MMIO region */ +#define SAVAGE_BCI_FIFO_SIZE 32 /* number of entries in on-chip + * BCI FIFO */ + +/* + * MMIO registers + */ +#define SAVAGE_STATUS_WORD0 0x48C00 +#define SAVAGE_STATUS_WORD1 0x48C04 +#define SAVAGE_ALT_STATUS_WORD0 0x48C60 + +#define SAVAGE_FIFO_USED_MASK_S3D 0x0001ffff +#define SAVAGE_FIFO_USED_MASK_S4 0x001fffff + +/* Copied from savage_bci.h in the 2D driver with some renaming. */ + +/* Bitmap descriptors */ +#define SAVAGE_BD_STRIDE_SHIFT 0 +#define SAVAGE_BD_BPP_SHIFT 16 +#define SAVAGE_BD_TILE_SHIFT 24 +#define SAVAGE_BD_BW_DISABLE (1<<28) +/* common: */ +#define SAVAGE_BD_TILE_LINEAR 0 +/* savage4, MX, IX, 3D */ +#define SAVAGE_BD_TILE_16BPP 2 +#define SAVAGE_BD_TILE_32BPP 3 +/* twister, prosavage, DDR, supersavage, 2000 */ +#define SAVAGE_BD_TILE_DEST 1 +#define SAVAGE_BD_TILE_TEXTURE 2 +/* GBD - BCI enable */ +/* savage4, MX, IX, 3D */ +#define SAVAGE_GBD_BCI_ENABLE 8 +/* twister, prosavage, DDR, supersavage, 2000 */ +#define SAVAGE_GBD_BCI_ENABLE_TWISTER 0 + +#define SAVAGE_GBD_BIG_ENDIAN 4 +#define SAVAGE_GBD_LITTLE_ENDIAN 0 +#define SAVAGE_GBD_64 1 + +/* Global Bitmap Descriptor */ +#define SAVAGE_BCI_GLB_BD_LOW 0x8168 +#define SAVAGE_BCI_GLB_BD_HIGH 0x816C + +/* + * BCI registers + */ +/* Savage4/Twister/ProSavage 3D registers */ +#define SAVAGE_DRAWLOCALCTRL_S4 0x1e +#define SAVAGE_TEXPALADDR_S4 0x1f +#define SAVAGE_TEXCTRL0_S4 0x20 +#define SAVAGE_TEXCTRL1_S4 0x21 +#define SAVAGE_TEXADDR0_S4 0x22 +#define SAVAGE_TEXADDR1_S4 0x23 +#define SAVAGE_TEXBLEND0_S4 0x24 +#define SAVAGE_TEXBLEND1_S4 0x25 +#define SAVAGE_TEXXPRCLR_S4 0x26 /* never used */ +#define SAVAGE_TEXDESCR_S4 0x27 +#define SAVAGE_FOGTABLE_S4 0x28 +#define SAVAGE_FOGCTRL_S4 0x30 +#define SAVAGE_STENCILCTRL_S4 0x31 +#define SAVAGE_ZBUFCTRL_S4 0x32 +#define SAVAGE_ZBUFOFF_S4 0x33 +#define SAVAGE_DESTCTRL_S4 0x34 +#define SAVAGE_DRAWCTRL0_S4 0x35 +#define SAVAGE_DRAWCTRL1_S4 0x36 +#define SAVAGE_ZWATERMARK_S4 0x37 +#define SAVAGE_DESTTEXRWWATERMARK_S4 0x38 +#define SAVAGE_TEXBLENDCOLOR_S4 0x39 +/* Savage3D/MX/IX 3D registers */ +#define SAVAGE_TEXPALADDR_S3D 0x18 +#define SAVAGE_TEXXPRCLR_S3D 0x19 /* never used */ +#define SAVAGE_TEXADDR_S3D 0x1A +#define SAVAGE_TEXDESCR_S3D 0x1B +#define SAVAGE_TEXCTRL_S3D 0x1C +#define SAVAGE_FOGTABLE_S3D 0x20 +#define SAVAGE_FOGCTRL_S3D 0x30 +#define SAVAGE_DRAWCTRL_S3D 0x31 +#define SAVAGE_ZBUFCTRL_S3D 0x32 +#define SAVAGE_ZBUFOFF_S3D 0x33 +#define SAVAGE_DESTCTRL_S3D 0x34 +#define SAVAGE_SCSTART_S3D 0x35 +#define SAVAGE_SCEND_S3D 0x36 +#define SAVAGE_ZWATERMARK_S3D 0x37 +#define SAVAGE_DESTTEXRWWATERMARK_S3D 0x38 +/* common stuff */ +#define SAVAGE_VERTBUFADDR 0x3e +#define SAVAGE_BITPLANEWTMASK 0xd7 +#define SAVAGE_DMABUFADDR 0x51 + +/* texture enable bits (needed for tex addr checking) */ +#define SAVAGE_TEXCTRL_TEXEN_MASK 0x00010000 /* S3D */ +#define SAVAGE_TEXDESCR_TEX0EN_MASK 0x02000000 /* S4 */ +#define SAVAGE_TEXDESCR_TEX1EN_MASK 0x04000000 /* S4 */ + +/* Global fields in Savage4/Twister/ProSavage 3D registers: + * + * All texture registers and DrawLocalCtrl are local. All other + * registers are global. */ + +/* Global fields in Savage3D/MX/IX 3D registers: + * + * All texture registers are local. DrawCtrl and ZBufCtrl are + * partially local. All other registers are global. + * + * DrawCtrl global fields: cullMode, alphaTestCmpFunc, alphaTestEn, alphaRefVal + * ZBufCtrl global fields: zCmpFunc, zBufEn + */ +#define SAVAGE_DRAWCTRL_S3D_GLOBAL 0x03f3c00c +#define SAVAGE_ZBUFCTRL_S3D_GLOBAL 0x00000027 + +/* Masks for scissor bits (drawCtrl[01] on s4, scissorStart/End on s3d) + */ +#define SAVAGE_SCISSOR_MASK_S4 0x00fff7ff +#define SAVAGE_SCISSOR_MASK_S3D 0x07ff07ff + +/* + * BCI commands + */ +#define BCI_CMD_NOP 0x40000000 +#define BCI_CMD_RECT 0x48000000 +#define BCI_CMD_RECT_XP 0x01000000 +#define BCI_CMD_RECT_YP 0x02000000 +#define BCI_CMD_SCANLINE 0x50000000 +#define BCI_CMD_LINE 0x5C000000 +#define BCI_CMD_LINE_LAST_PIXEL 0x58000000 +#define BCI_CMD_BYTE_TEXT 0x63000000 +#define BCI_CMD_NT_BYTE_TEXT 0x67000000 +#define BCI_CMD_BIT_TEXT 0x6C000000 +#define BCI_CMD_GET_ROP(cmd) (((cmd) >> 16) & 0xFF) +#define BCI_CMD_SET_ROP(cmd, rop) ((cmd) |= ((rop & 0xFF) << 16)) +#define BCI_CMD_SEND_COLOR 0x00008000 + +#define BCI_CMD_CLIP_NONE 0x00000000 +#define BCI_CMD_CLIP_CURRENT 0x00002000 +#define BCI_CMD_CLIP_LR 0x00004000 +#define BCI_CMD_CLIP_NEW 0x00006000 + +#define BCI_CMD_DEST_GBD 0x00000000 +#define BCI_CMD_DEST_PBD 0x00000800 +#define BCI_CMD_DEST_PBD_NEW 0x00000C00 +#define BCI_CMD_DEST_SBD 0x00001000 +#define BCI_CMD_DEST_SBD_NEW 0x00001400 + +#define BCI_CMD_SRC_TRANSPARENT 0x00000200 +#define BCI_CMD_SRC_SOLID 0x00000000 +#define BCI_CMD_SRC_GBD 0x00000020 +#define BCI_CMD_SRC_COLOR 0x00000040 +#define BCI_CMD_SRC_MONO 0x00000060 +#define BCI_CMD_SRC_PBD_COLOR 0x00000080 +#define BCI_CMD_SRC_PBD_MONO 0x000000A0 +#define BCI_CMD_SRC_PBD_COLOR_NEW 0x000000C0 +#define BCI_CMD_SRC_PBD_MONO_NEW 0x000000E0 +#define BCI_CMD_SRC_SBD_COLOR 0x00000100 +#define BCI_CMD_SRC_SBD_MONO 0x00000120 +#define BCI_CMD_SRC_SBD_COLOR_NEW 0x00000140 +#define BCI_CMD_SRC_SBD_MONO_NEW 0x00000160 + +#define BCI_CMD_PAT_TRANSPARENT 0x00000010 +#define BCI_CMD_PAT_NONE 0x00000000 +#define BCI_CMD_PAT_COLOR 0x00000002 +#define BCI_CMD_PAT_MONO 0x00000003 +#define BCI_CMD_PAT_PBD_COLOR 0x00000004 +#define BCI_CMD_PAT_PBD_MONO 0x00000005 +#define BCI_CMD_PAT_PBD_COLOR_NEW 0x00000006 +#define BCI_CMD_PAT_PBD_MONO_NEW 0x00000007 +#define BCI_CMD_PAT_SBD_COLOR 0x00000008 +#define BCI_CMD_PAT_SBD_MONO 0x00000009 +#define BCI_CMD_PAT_SBD_COLOR_NEW 0x0000000A +#define BCI_CMD_PAT_SBD_MONO_NEW 0x0000000B + +#define BCI_BD_BW_DISABLE 0x10000000 +#define BCI_BD_TILE_MASK 0x03000000 +#define BCI_BD_TILE_NONE 0x00000000 +#define BCI_BD_TILE_16 0x02000000 +#define BCI_BD_TILE_32 0x03000000 +#define BCI_BD_GET_BPP(bd) (((bd) >> 16) & 0xFF) +#define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16)) +#define BCI_BD_GET_STRIDE(bd) ((bd) & 0xFFFF) +#define BCI_BD_SET_STRIDE(bd, st) ((bd) |= ((st) & 0xFFFF)) + +#define BCI_CMD_SET_REGISTER 0x96000000 + +#define BCI_CMD_WAIT 0xC0000000 +#define BCI_CMD_WAIT_3D 0x00010000 +#define BCI_CMD_WAIT_2D 0x00020000 + +#define BCI_CMD_UPDATE_EVENT_TAG 0x98000000 + +#define BCI_CMD_DRAW_PRIM 0x80000000 +#define BCI_CMD_DRAW_INDEXED_PRIM 0x88000000 +#define BCI_CMD_DRAW_CONT 0x01000000 +#define BCI_CMD_DRAW_TRILIST 0x00000000 +#define BCI_CMD_DRAW_TRISTRIP 0x02000000 +#define BCI_CMD_DRAW_TRIFAN 0x04000000 +#define BCI_CMD_DRAW_SKIPFLAGS 0x000000ff +#define BCI_CMD_DRAW_NO_Z 0x00000001 +#define BCI_CMD_DRAW_NO_W 0x00000002 +#define BCI_CMD_DRAW_NO_CD 0x00000004 +#define BCI_CMD_DRAW_NO_CS 0x00000008 +#define BCI_CMD_DRAW_NO_U0 0x00000010 +#define BCI_CMD_DRAW_NO_V0 0x00000020 +#define BCI_CMD_DRAW_NO_UV0 0x00000030 +#define BCI_CMD_DRAW_NO_U1 0x00000040 +#define BCI_CMD_DRAW_NO_V1 0x00000080 +#define BCI_CMD_DRAW_NO_UV1 0x000000c0 + +#define BCI_CMD_DMA 0xa8000000 + +#define BCI_W_H(w, h) ((((h) << 16) | (w)) & 0x0FFF0FFF) +#define BCI_X_Y(x, y) ((((y) << 16) | (x)) & 0x0FFF0FFF) +#define BCI_X_W(x, y) ((((w) << 16) | (x)) & 0x0FFF0FFF) +#define BCI_CLIP_LR(l, r) ((((r) << 16) | (l)) & 0x0FFF0FFF) +#define BCI_CLIP_TL(t, l) ((((t) << 16) | (l)) & 0x0FFF0FFF) +#define BCI_CLIP_BR(b, r) ((((b) << 16) | (r)) & 0x0FFF0FFF) + +#define BCI_LINE_X_Y(x, y) (((y) << 16) | ((x) & 0xFFFF)) +#define BCI_LINE_STEPS(diag, axi) (((axi) << 16) | ((diag) & 0xFFFF)) +#define BCI_LINE_MISC(maj, ym, xp, yp, err) \ + (((maj) & 0x1FFF) | \ + ((ym) ? 1<<13 : 0) | \ + ((xp) ? 1<<14 : 0) | \ + ((yp) ? 1<<15 : 0) | \ + ((err) << 16)) + +/* + * common commands + */ +#define BCI_SET_REGISTERS( first, n ) \ + BCI_WRITE(BCI_CMD_SET_REGISTER | \ + ((uint32_t)(n) & 0xff) << 16 | \ + ((uint32_t)(first) & 0xffff)) +#define DMA_SET_REGISTERS( first, n ) \ + DMA_WRITE(BCI_CMD_SET_REGISTER | \ + ((uint32_t)(n) & 0xff) << 16 | \ + ((uint32_t)(first) & 0xffff)) + +#define BCI_DRAW_PRIMITIVE(n, type, skip) \ + BCI_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \ + ((n) << 16)) +#define DMA_DRAW_PRIMITIVE(n, type, skip) \ + DMA_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \ + ((n) << 16)) + +#define BCI_DRAW_INDICES_S3D(n, type, i0) \ + BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \ + ((n) << 16) | (i0)) + +#define BCI_DRAW_INDICES_S4(n, type, skip) \ + BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \ + (skip) | ((n) << 16)) + +#define BCI_DMA(n) \ + BCI_WRITE(BCI_CMD_DMA | (((n) >> 1) - 1)) + +/* + * access to MMIO + */ +#define SAVAGE_READ(reg) DRM_READ32( dev_priv->mmio, (reg) ) +#define SAVAGE_WRITE(reg) DRM_WRITE32( dev_priv->mmio, (reg) ) + +/* + * access to the burst command interface (BCI) + */ +#define SAVAGE_BCI_DEBUG 1 + +#define BCI_LOCALS volatile uint32_t *bci_ptr; + +#define BEGIN_BCI( n ) do { \ + dev_priv->wait_fifo(dev_priv, (n)); \ + bci_ptr = dev_priv->bci_ptr; \ +} while(0) + +#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val) + +#define BCI_COPY_FROM_USER(src,n) do { \ + unsigned int i; \ + for (i = 0; i < n; ++i) { \ + uint32_t val; \ + DRM_GET_USER_UNCHECKED(val, &((uint32_t*)(src))[i]); \ + BCI_WRITE(val); \ + } \ +} while(0) + +/* + * command DMA support + */ +#define SAVAGE_DMA_DEBUG 1 + +#define DMA_LOCALS uint32_t *dma_ptr; + +#define BEGIN_DMA( n ) do { \ + unsigned int cur = dev_priv->current_dma_page; \ + unsigned int rest = SAVAGE_DMA_PAGE_SIZE - \ + dev_priv->dma_pages[cur].used; \ + if ((n) > rest) { \ + dma_ptr = savage_dma_alloc(dev_priv, (n)); \ + } else { /* fast path for small allocations */ \ + dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + \ + cur * SAVAGE_DMA_PAGE_SIZE + \ + dev_priv->dma_pages[cur].used; \ + if (dev_priv->dma_pages[cur].used == 0) \ + savage_dma_wait(dev_priv, cur); \ + dev_priv->dma_pages[cur].used += (n); \ + } \ +} while(0) + +#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val) + +#define DMA_COPY_FROM_USER(src,n) do { \ + DRM_COPY_FROM_USER_UNCHECKED(dma_ptr, (src), (n)*4); \ + dma_ptr += n; \ +} while(0) + +#if SAVAGE_DMA_DEBUG +#define DMA_COMMIT() do { \ + unsigned int cur = dev_priv->current_dma_page; \ + uint32_t *expected = (uint32_t *)dev_priv->cmd_dma->handle + \ + cur * SAVAGE_DMA_PAGE_SIZE + \ + dev_priv->dma_pages[cur].used; \ + if (dma_ptr != expected) { \ + DRM_ERROR("DMA allocation and use don't match: " \ + "%p != %p\n", expected, dma_ptr); \ + savage_dma_reset(dev_priv); \ + } \ +} while(0) +#else +#define DMA_COMMIT() do {/* nothing */} while(0) +#endif + +#define DMA_FLUSH() dev_priv->dma_flush(dev_priv) + +/* Buffer aging via event tag + */ + +#define UPDATE_EVENT_COUNTER( ) do { \ + if (dev_priv->status_ptr) { \ + uint16_t count; \ + /* coordinate with Xserver */ \ + count = dev_priv->status_ptr[1023]; \ + if (count < dev_priv->event_counter) \ + dev_priv->event_wrap++; \ + dev_priv->event_counter = count; \ + } \ +} while(0) + +#define SET_AGE( age, e, w ) do { \ + (age)->event = e; \ + (age)->wrap = w; \ +} while(0) + +#define TEST_AGE( age, e, w ) \ + ( (age)->wrap < (w) || ( (age)->wrap == (w) && (age)->event <= (e) ) ) + +#endif /* __SAVAGE_DRV_H__ */ diff --git a/drivers/char/drm/savage_state.c b/drivers/char/drm/savage_state.c new file mode 100644 index 00000000000..475695a0008 --- /dev/null +++ b/drivers/char/drm/savage_state.c @@ -0,0 +1,1146 @@ +/* savage_state.c -- State and drawing support for Savage + * + * Copyright 2004 Felix Kuehling + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "drmP.h" +#include "savage_drm.h" +#include "savage_drv.h" + +void savage_emit_clip_rect_s3d(drm_savage_private_t *dev_priv, + drm_clip_rect_t *pbox) +{ + uint32_t scstart = dev_priv->state.s3d.new_scstart; + uint32_t scend = dev_priv->state.s3d.new_scend; + scstart = (scstart & ~SAVAGE_SCISSOR_MASK_S3D) | + ((uint32_t)pbox->x1 & 0x000007ff) | + (((uint32_t)pbox->y1 << 16) & 0x07ff0000); + scend = (scend & ~SAVAGE_SCISSOR_MASK_S3D) | + (((uint32_t)pbox->x2-1) & 0x000007ff) | + ((((uint32_t)pbox->y2-1) << 16) & 0x07ff0000); + if (scstart != dev_priv->state.s3d.scstart || + scend != dev_priv->state.s3d.scend) { + DMA_LOCALS; + BEGIN_DMA(4); + DMA_WRITE(BCI_CMD_WAIT|BCI_CMD_WAIT_3D); + DMA_SET_REGISTERS(SAVAGE_SCSTART_S3D, 2); + DMA_WRITE(scstart); + DMA_WRITE(scend); + dev_priv->state.s3d.scstart = scstart; + dev_priv->state.s3d.scend = scend; + dev_priv->waiting = 1; + DMA_COMMIT(); + } +} + +void savage_emit_clip_rect_s4(drm_savage_private_t *dev_priv, + drm_clip_rect_t *pbox) +{ + uint32_t drawctrl0 = dev_priv->state.s4.new_drawctrl0; + uint32_t drawctrl1 = dev_priv->state.s4.new_drawctrl1; + drawctrl0 = (drawctrl0 & ~SAVAGE_SCISSOR_MASK_S4) | + ((uint32_t)pbox->x1 & 0x000007ff) | + (((uint32_t)pbox->y1 << 12) & 0x00fff000); + drawctrl1 = (drawctrl1 & ~SAVAGE_SCISSOR_MASK_S4) | + (((uint32_t)pbox->x2-1) & 0x000007ff) | + ((((uint32_t)pbox->y2-1) << 12) & 0x00fff000); + if (drawctrl0 != dev_priv->state.s4.drawctrl0 || + drawctrl1 != dev_priv->state.s4.drawctrl1) { + DMA_LOCALS; + BEGIN_DMA(4); + DMA_WRITE(BCI_CMD_WAIT|BCI_CMD_WAIT_3D); + DMA_SET_REGISTERS(SAVAGE_DRAWCTRL0_S4, 2); + DMA_WRITE(drawctrl0); + DMA_WRITE(drawctrl1); + dev_priv->state.s4.drawctrl0 = drawctrl0; + dev_priv->state.s4.drawctrl1 = drawctrl1; + dev_priv->waiting = 1; + DMA_COMMIT(); + } +} + +static int savage_verify_texaddr(drm_savage_private_t *dev_priv, int unit, + uint32_t addr) +{ + if ((addr & 6) != 2) { /* reserved bits */ + DRM_ERROR("bad texAddr%d %08x (reserved bits)\n", unit, addr); + return DRM_ERR(EINVAL); + } + if (!(addr & 1)) { /* local */ + addr &= ~7; + if (addr < dev_priv->texture_offset || + addr >= dev_priv->texture_offset+dev_priv->texture_size) { + DRM_ERROR("bad texAddr%d %08x (local addr out of range)\n", + unit, addr); + return DRM_ERR(EINVAL); + } + } else { /* AGP */ + if (!dev_priv->agp_textures) { + DRM_ERROR("bad texAddr%d %08x (AGP not available)\n", + unit, addr); + return DRM_ERR(EINVAL); + } + addr &= ~7; + if (addr < dev_priv->agp_textures->offset || + addr >= (dev_priv->agp_textures->offset + + dev_priv->agp_textures->size)) { + DRM_ERROR("bad texAddr%d %08x (AGP addr out of range)\n", + unit, addr); + return DRM_ERR(EINVAL); + } + } + return 0; +} + +#define SAVE_STATE(reg,where) \ + if(start <= reg && start+count > reg) \ + DRM_GET_USER_UNCHECKED(dev_priv->state.where, ®s[reg-start]) +#define SAVE_STATE_MASK(reg,where,mask) do { \ + if(start <= reg && start+count > reg) { \ + uint32_t tmp; \ + DRM_GET_USER_UNCHECKED(tmp, ®s[reg-start]); \ + dev_priv->state.where = (tmp & (mask)) | \ + (dev_priv->state.where & ~(mask)); \ + } \ +} while (0) +static int savage_verify_state_s3d(drm_savage_private_t *dev_priv, + unsigned int start, unsigned int count, + const uint32_t __user *regs) +{ + if (start < SAVAGE_TEXPALADDR_S3D || + start+count-1 > SAVAGE_DESTTEXRWWATERMARK_S3D) { + DRM_ERROR("invalid register range (0x%04x-0x%04x)\n", + start, start+count-1); + return DRM_ERR(EINVAL); + } + + SAVE_STATE_MASK(SAVAGE_SCSTART_S3D, s3d.new_scstart, + ~SAVAGE_SCISSOR_MASK_S3D); + SAVE_STATE_MASK(SAVAGE_SCEND_S3D, s3d.new_scend, + ~SAVAGE_SCISSOR_MASK_S3D); + + /* if any texture regs were changed ... */ + if (start <= SAVAGE_TEXCTRL_S3D && + start+count > SAVAGE_TEXPALADDR_S3D) { + /* ... check texture state */ + SAVE_STATE(SAVAGE_TEXCTRL_S3D, s3d.texctrl); + SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr); + if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK) + return savage_verify_texaddr( + dev_priv, 0, dev_priv->state.s3d.texaddr); + } + + return 0; +} + +static int savage_verify_state_s4(drm_savage_private_t *dev_priv, + unsigned int start, unsigned int count, + const uint32_t __user *regs) +{ + int ret = 0; + + if (start < SAVAGE_DRAWLOCALCTRL_S4 || + start+count-1 > SAVAGE_TEXBLENDCOLOR_S4) { + DRM_ERROR("invalid register range (0x%04x-0x%04x)\n", + start, start+count-1); + return DRM_ERR(EINVAL); + } + + SAVE_STATE_MASK(SAVAGE_DRAWCTRL0_S4, s4.new_drawctrl0, + ~SAVAGE_SCISSOR_MASK_S4); + SAVE_STATE_MASK(SAVAGE_DRAWCTRL1_S4, s4.new_drawctrl1, + ~SAVAGE_SCISSOR_MASK_S4); + + /* if any texture regs were changed ... */ + if (start <= SAVAGE_TEXDESCR_S4 && + start+count > SAVAGE_TEXPALADDR_S4) { + /* ... check texture state */ + SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr); + SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0); + SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1); + if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK) + ret |= savage_verify_texaddr( + dev_priv, 0, dev_priv->state.s4.texaddr0); + if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK) + ret |= savage_verify_texaddr( + dev_priv, 1, dev_priv->state.s4.texaddr1); + } + + return ret; +} +#undef SAVE_STATE +#undef SAVE_STATE_MASK + +static int savage_dispatch_state(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t *cmd_header, + const uint32_t __user *regs) +{ + unsigned int count = cmd_header->state.count; + unsigned int start = cmd_header->state.start; + unsigned int count2 = 0; + unsigned int bci_size; + int ret; + DMA_LOCALS; + + if (!count) + return 0; + + if (DRM_VERIFYAREA_READ(regs, count*4)) + return DRM_ERR(EFAULT); + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + ret = savage_verify_state_s3d(dev_priv, start, count, regs); + if (ret != 0) + return ret; + /* scissor regs are emitted in savage_dispatch_draw */ + if (start < SAVAGE_SCSTART_S3D) { + if (start+count > SAVAGE_SCEND_S3D+1) + count2 = count - (SAVAGE_SCEND_S3D+1 - start); + if (start+count > SAVAGE_SCSTART_S3D) + count = SAVAGE_SCSTART_S3D - start; + } else if (start <= SAVAGE_SCEND_S3D) { + if (start+count > SAVAGE_SCEND_S3D+1) { + count -= SAVAGE_SCEND_S3D+1 - start; + start = SAVAGE_SCEND_S3D+1; + } else + return 0; + } + } else { + ret = savage_verify_state_s4(dev_priv, start, count, regs); + if (ret != 0) + return ret; + /* scissor regs are emitted in savage_dispatch_draw */ + if (start < SAVAGE_DRAWCTRL0_S4) { + if (start+count > SAVAGE_DRAWCTRL1_S4+1) + count2 = count - (SAVAGE_DRAWCTRL1_S4+1 - start); + if (start+count > SAVAGE_DRAWCTRL0_S4) + count = SAVAGE_DRAWCTRL0_S4 - start; + } else if (start <= SAVAGE_DRAWCTRL1_S4) { + if (start+count > SAVAGE_DRAWCTRL1_S4+1) { + count -= SAVAGE_DRAWCTRL1_S4+1 - start; + start = SAVAGE_DRAWCTRL1_S4+1; + } else + return 0; + } + } + + bci_size = count + (count+254)/255 + count2 + (count2+254)/255; + + if (cmd_header->state.global) { + BEGIN_DMA(bci_size+1); + DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D); + dev_priv->waiting = 1; + } else { + BEGIN_DMA(bci_size); + } + + do { + while (count > 0) { + unsigned int n = count < 255 ? count : 255; + DMA_SET_REGISTERS(start, n); + DMA_COPY_FROM_USER(regs, n); + count -= n; + start += n; + regs += n; + } + start += 2; + regs += 2; + count = count2; + count2 = 0; + } while (count); + + DMA_COMMIT(); + + return 0; +} + +static int savage_dispatch_dma_prim(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t *cmd_header, + const drm_buf_t *dmabuf) +{ + unsigned char reorder = 0; + unsigned int prim = cmd_header->prim.prim; + unsigned int skip = cmd_header->prim.skip; + unsigned int n = cmd_header->prim.count; + unsigned int start = cmd_header->prim.start; + unsigned int i; + BCI_LOCALS; + + if (!dmabuf) { + DRM_ERROR("called without dma buffers!\n"); + return DRM_ERR(EINVAL); + } + + if (!n) + return 0; + + switch (prim) { + case SAVAGE_PRIM_TRILIST_201: + reorder = 1; + prim = SAVAGE_PRIM_TRILIST; + case SAVAGE_PRIM_TRILIST: + if (n % 3 != 0) { + DRM_ERROR("wrong number of vertices %u in TRILIST\n", + n); + return DRM_ERR(EINVAL); + } + break; + case SAVAGE_PRIM_TRISTRIP: + case SAVAGE_PRIM_TRIFAN: + if (n < 3) { + DRM_ERROR("wrong number of vertices %u in TRIFAN/STRIP\n", + n); + return DRM_ERR(EINVAL); + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return DRM_ERR(EINVAL); + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip != 0) { + DRM_ERROR("invalid skip flags 0x%04x for DMA\n", + skip); + return DRM_ERR(EINVAL); + } + } else { + unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) - + (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) - + (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1); + if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) { + DRM_ERROR("invalid skip flags 0x%04x for DMA\n", + skip); + return DRM_ERR(EINVAL); + } + if (reorder) { + DRM_ERROR("TRILIST_201 used on Savage4 hardware\n"); + return DRM_ERR(EINVAL); + } + } + + if (start + n > dmabuf->total/32) { + DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n", + start, start + n - 1, dmabuf->total/32); + return DRM_ERR(EINVAL); + } + + /* Vertex DMA doesn't work with command DMA at the same time, + * so we use BCI_... to submit commands here. Flush buffered + * faked DMA first. */ + DMA_FLUSH(); + + if (dmabuf->bus_address != dev_priv->state.common.vbaddr) { + BEGIN_BCI(2); + BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1); + BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type); + dev_priv->state.common.vbaddr = dmabuf->bus_address; + } + if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) { + /* Workaround for what looks like a hardware bug. If a + * WAIT_3D_IDLE was emitted some time before the + * indexed drawing command then the engine will lock + * up. There are two known workarounds: + * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */ + BEGIN_BCI(63); + for (i = 0; i < 63; ++i) + BCI_WRITE(BCI_CMD_WAIT); + dev_priv->waiting = 0; + } + + prim <<= 25; + while (n != 0) { + /* Can emit up to 255 indices (85 triangles) at once. */ + unsigned int count = n > 255 ? 255 : n; + if (reorder) { + /* Need to reorder indices for correct flat + * shading while preserving the clock sense + * for correct culling. Only on Savage3D. */ + int reorder[3] = {-1, -1, -1}; + reorder[start%3] = 2; + + BEGIN_BCI((count+1+1)/2); + BCI_DRAW_INDICES_S3D(count, prim, start+2); + + for (i = start+1; i+1 < start+count; i += 2) + BCI_WRITE((i + reorder[i % 3]) | + ((i+1 + reorder[(i+1) % 3]) << 16)); + if (i < start+count) + BCI_WRITE(i + reorder[i%3]); + } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + BEGIN_BCI((count+1+1)/2); + BCI_DRAW_INDICES_S3D(count, prim, start); + + for (i = start+1; i+1 < start+count; i += 2) + BCI_WRITE(i | ((i+1) << 16)); + if (i < start+count) + BCI_WRITE(i); + } else { + BEGIN_BCI((count+2+1)/2); + BCI_DRAW_INDICES_S4(count, prim, skip); + + for (i = start; i+1 < start+count; i += 2) + BCI_WRITE(i | ((i+1) << 16)); + if (i < start+count) + BCI_WRITE(i); + } + + start += count; + n -= count; + + prim |= BCI_CMD_DRAW_CONT; + } + + return 0; +} + +static int savage_dispatch_vb_prim(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t *cmd_header, + const uint32_t __user *vtxbuf, + unsigned int vb_size, + unsigned int vb_stride) +{ + unsigned char reorder = 0; + unsigned int prim = cmd_header->prim.prim; + unsigned int skip = cmd_header->prim.skip; + unsigned int n = cmd_header->prim.count; + unsigned int start = cmd_header->prim.start; + unsigned int vtx_size; + unsigned int i; + DMA_LOCALS; + + if (!n) + return 0; + + switch (prim) { + case SAVAGE_PRIM_TRILIST_201: + reorder = 1; + prim = SAVAGE_PRIM_TRILIST; + case SAVAGE_PRIM_TRILIST: + if (n % 3 != 0) { + DRM_ERROR("wrong number of vertices %u in TRILIST\n", + n); + return DRM_ERR(EINVAL); + } + break; + case SAVAGE_PRIM_TRISTRIP: + case SAVAGE_PRIM_TRIFAN: + if (n < 3) { + DRM_ERROR("wrong number of vertices %u in TRIFAN/STRIP\n", + n); + return DRM_ERR(EINVAL); + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return DRM_ERR(EINVAL); + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip > SAVAGE_SKIP_ALL_S3D) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return DRM_ERR(EINVAL); + } + vtx_size = 8; /* full vertex */ + } else { + if (skip > SAVAGE_SKIP_ALL_S4) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return DRM_ERR(EINVAL); + } + vtx_size = 10; /* full vertex */ + } + + vtx_size -= (skip & 1) + (skip >> 1 & 1) + + (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) + + (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1); + + if (vtx_size > vb_stride) { + DRM_ERROR("vertex size greater than vb stride (%u > %u)\n", + vtx_size, vb_stride); + return DRM_ERR(EINVAL); + } + + if (start + n > vb_size / (vb_stride*4)) { + DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n", + start, start + n - 1, vb_size / (vb_stride*4)); + return DRM_ERR(EINVAL); + } + + prim <<= 25; + while (n != 0) { + /* Can emit up to 255 vertices (85 triangles) at once. */ + unsigned int count = n > 255 ? 255 : n; + if (reorder) { + /* Need to reorder vertices for correct flat + * shading while preserving the clock sense + * for correct culling. Only on Savage3D. */ + int reorder[3] = {-1, -1, -1}; + reorder[start%3] = 2; + + BEGIN_DMA(count*vtx_size+1); + DMA_DRAW_PRIMITIVE(count, prim, skip); + + for (i = start; i < start+count; ++i) { + unsigned int j = i + reorder[i % 3]; + DMA_COPY_FROM_USER(&vtxbuf[vb_stride*j], + vtx_size); + } + + DMA_COMMIT(); + } else { + BEGIN_DMA(count*vtx_size+1); + DMA_DRAW_PRIMITIVE(count, prim, skip); + + if (vb_stride == vtx_size) { + DMA_COPY_FROM_USER(&vtxbuf[vb_stride*start], + vtx_size*count); + } else { + for (i = start; i < start+count; ++i) { + DMA_COPY_FROM_USER( + &vtxbuf[vb_stride*i], + vtx_size); + } + } + + DMA_COMMIT(); + } + + start += count; + n -= count; + + prim |= BCI_CMD_DRAW_CONT; + } + + return 0; +} + +static int savage_dispatch_dma_idx(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t *cmd_header, + const uint16_t __user *usr_idx, + const drm_buf_t *dmabuf) +{ + unsigned char reorder = 0; + unsigned int prim = cmd_header->idx.prim; + unsigned int skip = cmd_header->idx.skip; + unsigned int n = cmd_header->idx.count; + unsigned int i; + BCI_LOCALS; + + if (!dmabuf) { + DRM_ERROR("called without dma buffers!\n"); + return DRM_ERR(EINVAL); + } + + if (!n) + return 0; + + switch (prim) { + case SAVAGE_PRIM_TRILIST_201: + reorder = 1; + prim = SAVAGE_PRIM_TRILIST; + case SAVAGE_PRIM_TRILIST: + if (n % 3 != 0) { + DRM_ERROR("wrong number of indices %u in TRILIST\n", + n); + return DRM_ERR(EINVAL); + } + break; + case SAVAGE_PRIM_TRISTRIP: + case SAVAGE_PRIM_TRIFAN: + if (n < 3) { + DRM_ERROR("wrong number of indices %u in TRIFAN/STRIP\n", + n); + return DRM_ERR(EINVAL); + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return DRM_ERR(EINVAL); + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip != 0) { + DRM_ERROR("invalid skip flags 0x%04x for DMA\n", + skip); + return DRM_ERR(EINVAL); + } + } else { + unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) - + (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) - + (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1); + if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) { + DRM_ERROR("invalid skip flags 0x%04x for DMA\n", + skip); + return DRM_ERR(EINVAL); + } + if (reorder) { + DRM_ERROR("TRILIST_201 used on Savage4 hardware\n"); + return DRM_ERR(EINVAL); + } + } + + /* Vertex DMA doesn't work with command DMA at the same time, + * so we use BCI_... to submit commands here. Flush buffered + * faked DMA first. */ + DMA_FLUSH(); + + if (dmabuf->bus_address != dev_priv->state.common.vbaddr) { + BEGIN_BCI(2); + BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1); + BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type); + dev_priv->state.common.vbaddr = dmabuf->bus_address; + } + if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) { + /* Workaround for what looks like a hardware bug. If a + * WAIT_3D_IDLE was emitted some time before the + * indexed drawing command then the engine will lock + * up. There are two known workarounds: + * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */ + BEGIN_BCI(63); + for (i = 0; i < 63; ++i) + BCI_WRITE(BCI_CMD_WAIT); + dev_priv->waiting = 0; + } + + prim <<= 25; + while (n != 0) { + /* Can emit up to 255 indices (85 triangles) at once. */ + unsigned int count = n > 255 ? 255 : n; + /* Is it ok to allocate 510 bytes on the stack in an ioctl? */ + uint16_t idx[255]; + + /* Copy and check indices */ + DRM_COPY_FROM_USER_UNCHECKED(idx, usr_idx, count*2); + for (i = 0; i < count; ++i) { + if (idx[i] > dmabuf->total/32) { + DRM_ERROR("idx[%u]=%u out of range (0-%u)\n", + i, idx[i], dmabuf->total/32); + return DRM_ERR(EINVAL); + } + } + + if (reorder) { + /* Need to reorder indices for correct flat + * shading while preserving the clock sense + * for correct culling. Only on Savage3D. */ + int reorder[3] = {2, -1, -1}; + + BEGIN_BCI((count+1+1)/2); + BCI_DRAW_INDICES_S3D(count, prim, idx[2]); + + for (i = 1; i+1 < count; i += 2) + BCI_WRITE(idx[i + reorder[i % 3]] | + (idx[i+1 + reorder[(i+1) % 3]] << 16)); + if (i < count) + BCI_WRITE(idx[i + reorder[i%3]]); + } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + BEGIN_BCI((count+1+1)/2); + BCI_DRAW_INDICES_S3D(count, prim, idx[0]); + + for (i = 1; i+1 < count; i += 2) + BCI_WRITE(idx[i] | (idx[i+1] << 16)); + if (i < count) + BCI_WRITE(idx[i]); + } else { + BEGIN_BCI((count+2+1)/2); + BCI_DRAW_INDICES_S4(count, prim, skip); + + for (i = 0; i+1 < count; i += 2) + BCI_WRITE(idx[i] | (idx[i+1] << 16)); + if (i < count) + BCI_WRITE(idx[i]); + } + + usr_idx += count; + n -= count; + + prim |= BCI_CMD_DRAW_CONT; + } + + return 0; +} + +static int savage_dispatch_vb_idx(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t *cmd_header, + const uint16_t __user *usr_idx, + const uint32_t __user *vtxbuf, + unsigned int vb_size, + unsigned int vb_stride) +{ + unsigned char reorder = 0; + unsigned int prim = cmd_header->idx.prim; + unsigned int skip = cmd_header->idx.skip; + unsigned int n = cmd_header->idx.count; + unsigned int vtx_size; + unsigned int i; + DMA_LOCALS; + + if (!n) + return 0; + + switch (prim) { + case SAVAGE_PRIM_TRILIST_201: + reorder = 1; + prim = SAVAGE_PRIM_TRILIST; + case SAVAGE_PRIM_TRILIST: + if (n % 3 != 0) { + DRM_ERROR("wrong number of indices %u in TRILIST\n", + n); + return DRM_ERR(EINVAL); + } + break; + case SAVAGE_PRIM_TRISTRIP: + case SAVAGE_PRIM_TRIFAN: + if (n < 3) { + DRM_ERROR("wrong number of indices %u in TRIFAN/STRIP\n", + n); + return DRM_ERR(EINVAL); + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return DRM_ERR(EINVAL); + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip > SAVAGE_SKIP_ALL_S3D) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return DRM_ERR(EINVAL); + } + vtx_size = 8; /* full vertex */ + } else { + if (skip > SAVAGE_SKIP_ALL_S4) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return DRM_ERR(EINVAL); + } + vtx_size = 10; /* full vertex */ + } + + vtx_size -= (skip & 1) + (skip >> 1 & 1) + + (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) + + (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1); + + if (vtx_size > vb_stride) { + DRM_ERROR("vertex size greater than vb stride (%u > %u)\n", + vtx_size, vb_stride); + return DRM_ERR(EINVAL); + } + + prim <<= 25; + while (n != 0) { + /* Can emit up to 255 vertices (85 triangles) at once. */ + unsigned int count = n > 255 ? 255 : n; + /* Is it ok to allocate 510 bytes on the stack in an ioctl? */ + uint16_t idx[255]; + + /* Copy and check indices */ + DRM_COPY_FROM_USER_UNCHECKED(idx, usr_idx, count*2); + for (i = 0; i < count; ++i) { + if (idx[i] > vb_size / (vb_stride*4)) { + DRM_ERROR("idx[%u]=%u out of range (0-%u)\n", + i, idx[i], vb_size / (vb_stride*4)); + return DRM_ERR(EINVAL); + } + } + + if (reorder) { + /* Need to reorder vertices for correct flat + * shading while preserving the clock sense + * for correct culling. Only on Savage3D. */ + int reorder[3] = {2, -1, -1}; + + BEGIN_DMA(count*vtx_size+1); + DMA_DRAW_PRIMITIVE(count, prim, skip); + + for (i = 0; i < count; ++i) { + unsigned int j = idx[i + reorder[i % 3]]; + DMA_COPY_FROM_USER(&vtxbuf[vb_stride*j], + vtx_size); + } + + DMA_COMMIT(); + } else { + BEGIN_DMA(count*vtx_size+1); + DMA_DRAW_PRIMITIVE(count, prim, skip); + + for (i = 0; i < count; ++i) { + unsigned int j = idx[i]; + DMA_COPY_FROM_USER(&vtxbuf[vb_stride*j], + vtx_size); + } + + DMA_COMMIT(); + } + + usr_idx += count; + n -= count; + + prim |= BCI_CMD_DRAW_CONT; + } + + return 0; +} + +static int savage_dispatch_clear(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t *cmd_header, + const drm_savage_cmd_header_t __user *data, + unsigned int nbox, + const drm_clip_rect_t __user *usr_boxes) +{ + unsigned int flags = cmd_header->clear0.flags, mask, value; + unsigned int clear_cmd; + unsigned int i, nbufs; + DMA_LOCALS; + + if (nbox == 0) + return 0; + + DRM_GET_USER_UNCHECKED(mask, &((const drm_savage_cmd_header_t*)data) + ->clear1.mask); + DRM_GET_USER_UNCHECKED(value, &((const drm_savage_cmd_header_t*)data) + ->clear1.value); + + clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP | + BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW; + BCI_CMD_SET_ROP(clear_cmd,0xCC); + + nbufs = ((flags & SAVAGE_FRONT) ? 1 : 0) + + ((flags & SAVAGE_BACK) ? 1 : 0) + + ((flags & SAVAGE_DEPTH) ? 1 : 0); + if (nbufs == 0) + return 0; + + if (mask != 0xffffffff) { + /* set mask */ + BEGIN_DMA(2); + DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1); + DMA_WRITE(mask); + DMA_COMMIT(); + } + for (i = 0; i < nbox; ++i) { + drm_clip_rect_t box; + unsigned int x, y, w, h; + unsigned int buf; + DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box)); + x = box.x1, y = box.y1; + w = box.x2 - box.x1; + h = box.y2 - box.y1; + BEGIN_DMA(nbufs*6); + for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) { + if (!(flags & buf)) + continue; + DMA_WRITE(clear_cmd); + switch(buf) { + case SAVAGE_FRONT: + DMA_WRITE(dev_priv->front_offset); + DMA_WRITE(dev_priv->front_bd); + break; + case SAVAGE_BACK: + DMA_WRITE(dev_priv->back_offset); + DMA_WRITE(dev_priv->back_bd); + break; + case SAVAGE_DEPTH: + DMA_WRITE(dev_priv->depth_offset); + DMA_WRITE(dev_priv->depth_bd); + break; + } + DMA_WRITE(value); + DMA_WRITE(BCI_X_Y(x, y)); + DMA_WRITE(BCI_W_H(w, h)); + } + DMA_COMMIT(); + } + if (mask != 0xffffffff) { + /* reset mask */ + BEGIN_DMA(2); + DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1); + DMA_WRITE(0xffffffff); + DMA_COMMIT(); + } + + return 0; +} + +static int savage_dispatch_swap(drm_savage_private_t *dev_priv, + unsigned int nbox, + const drm_clip_rect_t __user *usr_boxes) +{ + unsigned int swap_cmd; + unsigned int i; + DMA_LOCALS; + + if (nbox == 0) + return 0; + + swap_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP | + BCI_CMD_SRC_PBD_COLOR_NEW | BCI_CMD_DEST_GBD; + BCI_CMD_SET_ROP(swap_cmd,0xCC); + + for (i = 0; i < nbox; ++i) { + drm_clip_rect_t box; + DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box)); + + BEGIN_DMA(6); + DMA_WRITE(swap_cmd); + DMA_WRITE(dev_priv->back_offset); + DMA_WRITE(dev_priv->back_bd); + DMA_WRITE(BCI_X_Y(box.x1, box.y1)); + DMA_WRITE(BCI_X_Y(box.x1, box.y1)); + DMA_WRITE(BCI_W_H(box.x2-box.x1, box.y2-box.y1)); + DMA_COMMIT(); + } + + return 0; +} + +static int savage_dispatch_draw(drm_savage_private_t *dev_priv, + const drm_savage_cmd_header_t __user *start, + const drm_savage_cmd_header_t __user *end, + const drm_buf_t *dmabuf, + const unsigned int __user *usr_vtxbuf, + unsigned int vb_size, unsigned int vb_stride, + unsigned int nbox, + const drm_clip_rect_t __user *usr_boxes) +{ + unsigned int i, j; + int ret; + + for (i = 0; i < nbox; ++i) { + drm_clip_rect_t box; + const drm_savage_cmd_header_t __user *usr_cmdbuf; + DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box)); + dev_priv->emit_clip_rect(dev_priv, &box); + + usr_cmdbuf = start; + while (usr_cmdbuf < end) { + drm_savage_cmd_header_t cmd_header; + DRM_COPY_FROM_USER_UNCHECKED(&cmd_header, usr_cmdbuf, + sizeof(cmd_header)); + usr_cmdbuf++; + switch (cmd_header.cmd.cmd) { + case SAVAGE_CMD_DMA_PRIM: + ret = savage_dispatch_dma_prim( + dev_priv, &cmd_header, dmabuf); + break; + case SAVAGE_CMD_VB_PRIM: + ret = savage_dispatch_vb_prim( + dev_priv, &cmd_header, + (const uint32_t __user *)usr_vtxbuf, + vb_size, vb_stride); + break; + case SAVAGE_CMD_DMA_IDX: + j = (cmd_header.idx.count + 3) / 4; + /* j was check in savage_bci_cmdbuf */ + ret = savage_dispatch_dma_idx( + dev_priv, &cmd_header, + (const uint16_t __user *)usr_cmdbuf, + dmabuf); + usr_cmdbuf += j; + break; + case SAVAGE_CMD_VB_IDX: + j = (cmd_header.idx.count + 3) / 4; + /* j was check in savage_bci_cmdbuf */ + ret = savage_dispatch_vb_idx( + dev_priv, &cmd_header, + (const uint16_t __user *)usr_cmdbuf, + (const uint32_t __user *)usr_vtxbuf, + vb_size, vb_stride); + usr_cmdbuf += j; + break; + default: + /* What's the best return code? EFAULT? */ + DRM_ERROR("IMPLEMENTATION ERROR: " + "non-drawing-command %d\n", + cmd_header.cmd.cmd); + return DRM_ERR(EINVAL); + } + + if (ret != 0) + return ret; + } + } + + return 0; +} + +int savage_bci_cmdbuf(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_savage_private_t *dev_priv = dev->dev_private; + drm_device_dma_t *dma = dev->dma; + drm_buf_t *dmabuf; + drm_savage_cmdbuf_t cmdbuf; + drm_savage_cmd_header_t __user *usr_cmdbuf; + drm_savage_cmd_header_t __user *first_draw_cmd; + unsigned int __user *usr_vtxbuf; + drm_clip_rect_t __user *usr_boxes; + unsigned int i, j; + int ret = 0; + + DRM_DEBUG("\n"); + + LOCK_TEST_WITH_RETURN(dev, filp); + + DRM_COPY_FROM_USER_IOCTL(cmdbuf, (drm_savage_cmdbuf_t __user *)data, + sizeof(cmdbuf)); + + if (dma && dma->buflist) { + if (cmdbuf.dma_idx > dma->buf_count) { + DRM_ERROR("vertex buffer index %u out of range (0-%u)\n", + cmdbuf.dma_idx, dma->buf_count-1); + return DRM_ERR(EINVAL); + } + dmabuf = dma->buflist[cmdbuf.dma_idx]; + } else { + dmabuf = NULL; + } + + usr_cmdbuf = (drm_savage_cmd_header_t __user *)cmdbuf.cmd_addr; + usr_vtxbuf = (unsigned int __user *)cmdbuf.vb_addr; + usr_boxes = (drm_clip_rect_t __user *)cmdbuf.box_addr; + if ((cmdbuf.size && DRM_VERIFYAREA_READ(usr_cmdbuf, cmdbuf.size*8)) || + (cmdbuf.vb_size && DRM_VERIFYAREA_READ( + usr_vtxbuf, cmdbuf.vb_size)) || + (cmdbuf.nbox && DRM_VERIFYAREA_READ( + usr_boxes, cmdbuf.nbox*sizeof(drm_clip_rect_t)))) + return DRM_ERR(EFAULT); + + /* Make sure writes to DMA buffers are finished before sending + * DMA commands to the graphics hardware. */ + DRM_MEMORYBARRIER(); + + /* Coming from user space. Don't know if the Xserver has + * emitted wait commands. Assuming the worst. */ + dev_priv->waiting = 1; + + i = 0; + first_draw_cmd = NULL; + while (i < cmdbuf.size) { + drm_savage_cmd_header_t cmd_header; + DRM_COPY_FROM_USER_UNCHECKED(&cmd_header, usr_cmdbuf, + sizeof(cmd_header)); + usr_cmdbuf++; + i++; + + /* Group drawing commands with same state to minimize + * iterations over clip rects. */ + j = 0; + switch (cmd_header.cmd.cmd) { + case SAVAGE_CMD_DMA_IDX: + case SAVAGE_CMD_VB_IDX: + j = (cmd_header.idx.count + 3) / 4; + if (i + j > cmdbuf.size) { + DRM_ERROR("indexed drawing command extends " + "beyond end of command buffer\n"); + DMA_FLUSH(); + return DRM_ERR(EINVAL); + } + /* fall through */ + case SAVAGE_CMD_DMA_PRIM: + case SAVAGE_CMD_VB_PRIM: + if (!first_draw_cmd) + first_draw_cmd = usr_cmdbuf-1; + usr_cmdbuf += j; + i += j; + break; + default: + if (first_draw_cmd) { + ret = savage_dispatch_draw ( + dev_priv, first_draw_cmd, usr_cmdbuf-1, + dmabuf, usr_vtxbuf, cmdbuf.vb_size, + cmdbuf.vb_stride, + cmdbuf.nbox, usr_boxes); + if (ret != 0) + return ret; + first_draw_cmd = NULL; + } + } + if (first_draw_cmd) + continue; + + switch (cmd_header.cmd.cmd) { + case SAVAGE_CMD_STATE: + j = (cmd_header.state.count + 1) / 2; + if (i + j > cmdbuf.size) { + DRM_ERROR("command SAVAGE_CMD_STATE extends " + "beyond end of command buffer\n"); + DMA_FLUSH(); + return DRM_ERR(EINVAL); + } + ret = savage_dispatch_state( + dev_priv, &cmd_header, + (uint32_t __user *)usr_cmdbuf); + usr_cmdbuf += j; + i += j; + break; + case SAVAGE_CMD_CLEAR: + if (i + 1 > cmdbuf.size) { + DRM_ERROR("command SAVAGE_CMD_CLEAR extends " + "beyond end of command buffer\n"); + DMA_FLUSH(); + return DRM_ERR(EINVAL); + } + ret = savage_dispatch_clear(dev_priv, &cmd_header, + usr_cmdbuf, + cmdbuf.nbox, usr_boxes); + usr_cmdbuf++; + i++; + break; + case SAVAGE_CMD_SWAP: + ret = savage_dispatch_swap(dev_priv, + cmdbuf.nbox, usr_boxes); + break; + default: + DRM_ERROR("invalid command 0x%x\n", cmd_header.cmd.cmd); + DMA_FLUSH(); + return DRM_ERR(EINVAL); + } + + if (ret != 0) { + DMA_FLUSH(); + return ret; + } + } + + if (first_draw_cmd) { + ret = savage_dispatch_draw ( + dev_priv, first_draw_cmd, usr_cmdbuf, dmabuf, + usr_vtxbuf, cmdbuf.vb_size, cmdbuf.vb_stride, + cmdbuf.nbox, usr_boxes); + if (ret != 0) { + DMA_FLUSH(); + return ret; + } + } + + DMA_FLUSH(); + + if (dmabuf && cmdbuf.discard) { + drm_savage_buf_priv_t *buf_priv = dmabuf->dev_private; + uint16_t event; + event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D); + SET_AGE(&buf_priv->age, event, dev_priv->event_wrap); + savage_freelist_put(dev, dmabuf); + } + + return 0; +} |