diff options
Diffstat (limited to 'drivers/gpu/drm/savage')
| -rw-r--r-- | drivers/gpu/drm/savage/Makefile | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/savage/savage_bci.c | 1095 | ||||
| -rw-r--r-- | drivers/gpu/drm/savage/savage_drv.c | 88 | ||||
| -rw-r--r-- | drivers/gpu/drm/savage/savage_drv.h | 575 | ||||
| -rw-r--r-- | drivers/gpu/drm/savage/savage_state.c | 1163 |
5 files changed, 2930 insertions, 0 deletions
diff --git a/drivers/gpu/drm/savage/Makefile b/drivers/gpu/drm/savage/Makefile new file mode 100644 index 000000000000..d8f84ac7bb26 --- /dev/null +++ b/drivers/gpu/drm/savage/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for the drm device driver. This driver provides support for the +# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. + +ccflags-y = -Iinclude/drm +savage-y := savage_drv.o savage_bci.o savage_state.o + +obj-$(CONFIG_DRM_SAVAGE)+= savage.o + diff --git a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c new file mode 100644 index 000000000000..d465b2f9c1cd --- /dev/null +++ b/drivers/gpu/drm/savage/savage_bci.c @@ -0,0 +1,1095 @@ +/* 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_do_cleanup_bci(struct drm_device *dev); + +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 -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 -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 -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 -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 -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(struct drm_device * dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + struct drm_device_dma *dma = dev->dma; + struct drm_buf *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 struct drm_buf *savage_freelist_get(struct drm_device * 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(struct drm_device * dev, struct drm_buf * 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 -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; +} + +int savage_driver_load(struct drm_device *dev, unsigned long chipset) +{ + drm_savage_private_t *dev_priv; + + dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER); + if (dev_priv == NULL) + return -ENOMEM; + + memset(dev_priv, 0, sizeof(drm_savage_private_t)); + dev->dev_private = (void *)dev_priv; + + dev_priv->chipset = (enum savage_family)chipset; + + return 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 add them manually before the maps are + * initialized, and tear them down on last close. + */ +int savage_driver_firstopen(struct drm_device *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + 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->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 = + drm_mtrr_add(dev_priv->mtrr[0].base, + dev_priv->mtrr[0].size, DRM_MTRR_WC); + dev_priv->mtrr[1].base = fb_base + 0x02000000; + dev_priv->mtrr[1].size = 0x02000000; + dev_priv->mtrr[1].handle = + drm_mtrr_add(dev_priv->mtrr[1].base, + dev_priv->mtrr[1].size, DRM_MTRR_WC); + dev_priv->mtrr[2].base = fb_base + 0x04000000; + dev_priv->mtrr[2].size = 0x04000000; + dev_priv->mtrr[2].handle = + drm_mtrr_add(dev_priv->mtrr[2].base, + dev_priv->mtrr[2].size, DRM_MTRR_WC); + } else { + DRM_ERROR("strange pci_resource_len %08lx\n", + drm_get_resource_len(dev, 0)); + } + } else if (dev_priv->chipset != S3_SUPERSAVAGE && + dev_priv->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 = + drm_mtrr_add(dev_priv->mtrr[0].base, + dev_priv->mtrr[0].size, DRM_MTRR_WC); + } 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. + */ +void savage_driver_lastclose(struct drm_device *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) + drm_mtrr_del(dev_priv->mtrr[i].handle, + dev_priv->mtrr[i].base, + dev_priv->mtrr[i].size, DRM_MTRR_WC); +} + +int savage_driver_unload(struct drm_device *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + + drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER); + + return 0; +} + +static int savage_do_init_bci(struct drm_device * 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 -EINVAL; + } + if (init->depth_bpp != 16 && init->depth_bpp != 32) { + DRM_ERROR("invalid depth buffer bpp %d!\n", init->fb_bpp); + return -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 -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; + + dev_priv->sarea = drm_getsarea(dev); + if (!dev_priv->sarea) { + DRM_ERROR("could not find sarea!\n"); + savage_do_cleanup_bci(dev); + return -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 -EINVAL; + } + } else { + dev_priv->status = NULL; + } + if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) { + dev->agp_buffer_token = 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 -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 -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 -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 -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 -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 -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 -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 -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 -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 -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 -ENOMEM; + } + + if (savage_dma_init(dev_priv) < 0) { + DRM_ERROR("could not initialize command DMA\n"); + savage_do_cleanup_bci(dev); + return -ENOMEM; + } + + return 0; +} + +static int savage_do_cleanup_bci(struct drm_device * 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(struct drm_device *dev, void *data, struct drm_file *file_priv) +{ + drm_savage_init_t *init = data; + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + 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 -EINVAL; +} + +static int savage_bci_event_emit(struct drm_device *dev, void *data, struct drm_file *file_priv) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + drm_savage_event_emit_t *event = data; + + DRM_DEBUG("\n"); + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + event->count = savage_bci_emit_event(dev_priv, event->flags); + event->count |= dev_priv->event_wrap << 16; + + return 0; +} + +static int savage_bci_event_wait(struct drm_device *dev, void *data, struct drm_file *file_priv) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + drm_savage_event_wait_t *event = data; + unsigned int event_e, hw_e; + unsigned int event_w, hw_w; + + DRM_DEBUG("\n"); + + 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(struct drm_device *dev, + struct drm_file *file_priv, + struct drm_dma *d) +{ + struct drm_buf *buf; + int i; + + for (i = d->granted_count; i < d->request_count; i++) { + buf = savage_freelist_get(dev); + if (!buf) + return -EAGAIN; + + buf->file_priv = file_priv; + + if (DRM_COPY_TO_USER(&d->request_indices[i], + &buf->idx, sizeof(buf->idx))) + return -EFAULT; + if (DRM_COPY_TO_USER(&d->request_sizes[i], + &buf->total, sizeof(buf->total))) + return -EFAULT; + + d->granted_count++; + } + return 0; +} + +int savage_bci_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv) +{ + struct drm_device_dma *dma = dev->dma; + struct drm_dma *d = data; + int ret = 0; + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + /* 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 -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 -EINVAL; + } + + d->granted_count = 0; + + if (d->request_count) { + ret = savage_bci_get_buffers(dev, file_priv, d); + } + + return ret; +} + +void savage_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv) +{ + struct drm_device_dma *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++) { + struct drm_buf *buf = dma->buflist[i]; + drm_savage_buf_priv_t *buf_priv = buf->dev_private; + + if (buf->file_priv == file_priv && 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, file_priv); +} + +struct drm_ioctl_desc savage_ioctls[] = { + DRM_IOCTL_DEF(DRM_SAVAGE_BCI_INIT, savage_bci_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_SAVAGE_BCI_CMDBUF, savage_bci_cmdbuf, DRM_AUTH), + DRM_IOCTL_DEF(DRM_SAVAGE_BCI_EVENT_EMIT, savage_bci_event_emit, DRM_AUTH), + DRM_IOCTL_DEF(DRM_SAVAGE_BCI_EVENT_WAIT, savage_bci_event_wait, DRM_AUTH), +}; + +int savage_max_ioctl = DRM_ARRAY_SIZE(savage_ioctls); diff --git a/drivers/gpu/drm/savage/savage_drv.c b/drivers/gpu/drm/savage/savage_drv.c new file mode 100644 index 000000000000..eee52aa92a7c --- /dev/null +++ b/drivers/gpu/drm/savage/savage_drv.c @@ -0,0 +1,88 @@ +/* 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 "drmP.h" +#include "savage_drm.h" +#include "savage_drv.h" + +#include "drm_pciids.h" + +static struct pci_device_id pciidlist[] = { + savage_PCI_IDS +}; + +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), + .load = savage_driver_load, + .firstopen = savage_driver_firstopen, + .lastclose = savage_driver_lastclose, + .unload = savage_driver_unload, + .reclaim_buffers = savage_reclaim_buffers, + .get_map_ofs = drm_core_get_map_ofs, + .get_reg_ofs = drm_core_get_reg_ofs, + .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, + }, + + .name = DRIVER_NAME, + .desc = DRIVER_DESC, + .date = DRIVER_DATE, + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, + .patchlevel = DRIVER_PATCHLEVEL, +}; + +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/gpu/drm/savage/savage_drv.h b/drivers/gpu/drm/savage/savage_drv.h new file mode 100644 index 000000000000..df2aac6636f7 --- /dev/null +++ b/drivers/gpu/drm/savage/savage_drv.h @@ -0,0 +1,575 @@ +/* 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; + struct drm_buf *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 +}; + +extern struct drm_ioctl_desc savage_ioctls[]; +extern int savage_max_ioctl; + +#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, + const struct drm_clip_rect * pbox); + void (*dma_flush) (struct drm_savage_private * dev_priv); +} drm_savage_private_t; + +/* ioctls */ +extern int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int savage_bci_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv); + +/* BCI functions */ +extern uint16_t savage_bci_emit_event(drm_savage_private_t * dev_priv, + unsigned int flags); +extern void savage_freelist_put(struct drm_device * dev, struct drm_buf * 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_driver_load(struct drm_device *dev, unsigned long chipset); +extern int savage_driver_firstopen(struct drm_device *dev); +extern void savage_driver_lastclose(struct drm_device *dev); +extern int savage_driver_unload(struct drm_device *dev); +extern void savage_reclaim_buffers(struct drm_device *dev, + struct drm_file *file_priv); + +/* state functions */ +extern void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv, + const struct drm_clip_rect * pbox); +extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv, + const struct drm_clip_rect * 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) + +/* + * 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(src, n) do { \ + memcpy(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/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c new file mode 100644 index 000000000000..5f6238fdf1fa --- /dev/null +++ b/drivers/gpu/drm/savage/savage_state.c @@ -0,0 +1,1163 @@ +/* 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, + const struct drm_clip_rect * 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, + const struct drm_clip_rect * 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 -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 -EINVAL; + } + } else { /* AGP */ + if (!dev_priv->agp_textures) { + DRM_ERROR("bad texAddr%d %08x (AGP not available)\n", + unit, addr); + return -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 -EINVAL; + } + } + return 0; +} + +#define SAVE_STATE(reg,where) \ + if(start <= reg && start+count > reg) \ + dev_priv->state.where = regs[reg - start] +#define SAVE_STATE_MASK(reg,where,mask) do { \ + if(start <= reg && start+count > reg) { \ + uint32_t tmp; \ + tmp = regs[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 *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 -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 *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 -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 *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 (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(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 struct drm_buf * 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 -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 -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 -EINVAL; + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return -EINVAL; + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip != 0) { + DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip); + return -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 -EINVAL; + } + if (reorder) { + DRM_ERROR("TRILIST_201 used on Savage4 hardware\n"); + return -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 -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 *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 -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 -EINVAL; + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return -EINVAL; + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip > SAVAGE_SKIP_ALL_S3D) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return -EINVAL; + } + vtx_size = 8; /* full vertex */ + } else { + if (skip > SAVAGE_SKIP_ALL_S4) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return -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 -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 -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(&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(&vtxbuf[vb_stride * start], + vtx_size * count); + } else { + for (i = start; i < start + count; ++i) { + DMA_COPY(&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 *idx, + const struct drm_buf * 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 -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 -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 -EINVAL; + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return -EINVAL; + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip != 0) { + DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip); + return -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 -EINVAL; + } + if (reorder) { + DRM_ERROR("TRILIST_201 used on Savage4 hardware\n"); + return -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; + + /* check indices */ + 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 -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]); + } + + 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 *idx, + const uint32_t *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 -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 -EINVAL; + } + break; + default: + DRM_ERROR("invalid primitive type %u\n", prim); + return -EINVAL; + } + + if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { + if (skip > SAVAGE_SKIP_ALL_S3D) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return -EINVAL; + } + vtx_size = 8; /* full vertex */ + } else { + if (skip > SAVAGE_SKIP_ALL_S4) { + DRM_ERROR("invalid skip flags 0x%04x\n", skip); + return -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 -EINVAL; + } + + prim <<= 25; + while (n != 0) { + /* Can emit up to 255 vertices (85 triangles) at once. */ + unsigned int count = n > 255 ? 255 : n; + + /* Check indices */ + 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 -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(&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(&vtxbuf[vb_stride * j], vtx_size); + } + + DMA_COMMIT(); + } + + 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 *data, + unsigned int nbox, + const struct drm_clip_rect *boxes) +{ + unsigned int flags = cmd_header->clear0.flags; + unsigned int clear_cmd; + unsigned int i, nbufs; + DMA_LOCALS; + + if (nbox == 0) + return 0; + + 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 (data->clear1.mask != 0xffffffff) { + /* set mask */ + BEGIN_DMA(2); + DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1); + DMA_WRITE(data->clear1.mask); + DMA_COMMIT(); + } + for (i = 0; i < nbox; ++i) { + unsigned int x, y, w, h; + unsigned int buf; + x = boxes[i].x1, y = boxes[i].y1; + w = boxes[i].x2 - boxes[i].x1; + h = boxes[i].y2 - boxes[i].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(data->clear1.value); + DMA_WRITE(BCI_X_Y(x, y)); + DMA_WRITE(BCI_W_H(w, h)); + } + DMA_COMMIT(); + } + if (data->clear1.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 struct drm_clip_rect *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) { + BEGIN_DMA(6); + DMA_WRITE(swap_cmd); + DMA_WRITE(dev_priv->back_offset); + DMA_WRITE(dev_priv->back_bd); + DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1)); + DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1)); + DMA_WRITE(BCI_W_H(boxes[i].x2 - boxes[i].x1, + boxes[i].y2 - boxes[i].y1)); + DMA_COMMIT(); + } + + return 0; +} + +static int savage_dispatch_draw(drm_savage_private_t * dev_priv, + const drm_savage_cmd_header_t *start, + const drm_savage_cmd_header_t *end, + const struct drm_buf * dmabuf, + const unsigned int *vtxbuf, + unsigned int vb_size, unsigned int vb_stride, + unsigned int nbox, + const struct drm_clip_rect *boxes) +{ + unsigned int i, j; + int ret; + + for (i = 0; i < nbox; ++i) { + const drm_savage_cmd_header_t *cmdbuf; + dev_priv->emit_clip_rect(dev_priv, &boxes[i]); + + cmdbuf = start; + while (cmdbuf < end) { + drm_savage_cmd_header_t cmd_header; + cmd_header = *cmdbuf; + 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, + 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 *)cmdbuf, + dmabuf); + 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 *)cmdbuf, + (const uint32_t *)vtxbuf, vb_size, + vb_stride); + 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 -EINVAL; + } + + if (ret != 0) + return ret; + } + } + + return 0; +} + +int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + struct drm_device_dma *dma = dev->dma; + struct drm_buf *dmabuf; + drm_savage_cmdbuf_t *cmdbuf = data; + drm_savage_cmd_header_t *kcmd_addr = NULL; + drm_savage_cmd_header_t *first_draw_cmd; + unsigned int *kvb_addr = NULL; + struct drm_clip_rect *kbox_addr = NULL; + unsigned int i, j; + int ret = 0; + + DRM_DEBUG("\n"); + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + 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 -EINVAL; + } + dmabuf = dma->buflist[cmdbuf->dma_idx]; + } else { + dmabuf = NULL; + } + + /* Copy the user buffers into kernel temporary areas. This hasn't been + * a performance loss compared to VERIFYAREA_READ/ + * COPY_FROM_USER_UNCHECKED when done in other drivers, and is correct + * for locking on FreeBSD. + */ + if (cmdbuf->size) { + kcmd_addr = drm_alloc(cmdbuf->size * 8, DRM_MEM_DRIVER); + if (kcmd_addr == NULL) + return -ENOMEM; + + if (DRM_COPY_FROM_USER(kcmd_addr, cmdbuf->cmd_addr, + cmdbuf->size * 8)) + { + drm_free(kcmd_addr, cmdbuf->size * 8, DRM_MEM_DRIVER); + return -EFAULT; + } + cmdbuf->cmd_addr = kcmd_addr; + } + if (cmdbuf->vb_size) { + kvb_addr = drm_alloc(cmdbuf->vb_size, DRM_MEM_DRIVER); + if (kvb_addr == NULL) { + ret = -ENOMEM; + goto done; + } + + if (DRM_COPY_FROM_USER(kvb_addr, cmdbuf->vb_addr, + cmdbuf->vb_size)) { + ret = -EFAULT; + goto done; + } + cmdbuf->vb_addr = kvb_addr; + } + if (cmdbuf->nbox) { + kbox_addr = drm_alloc(cmdbuf->nbox * sizeof(struct drm_clip_rect), + DRM_MEM_DRIVER); + if (kbox_addr == NULL) { + ret = -ENOMEM; + goto done; + } + + if (DRM_COPY_FROM_USER(kbox_addr, cmdbuf->box_addr, + cmdbuf->nbox * sizeof(struct drm_clip_rect))) { + ret = -EFAULT; + goto done; + } + cmdbuf->box_addr = kbox_addr; + } + + /* 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; + cmd_header = *(drm_savage_cmd_header_t *)cmdbuf->cmd_addr; + cmdbuf->cmd_addr++; + 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 -EINVAL; + } + /* fall through */ + case SAVAGE_CMD_DMA_PRIM: + case SAVAGE_CMD_VB_PRIM: + if (!first_draw_cmd) + first_draw_cmd = cmdbuf->cmd_addr - 1; + cmdbuf->cmd_addr += j; + i += j; + break; + default: + if (first_draw_cmd) { + ret = savage_dispatch_draw( + dev_priv, first_draw_cmd, + cmdbuf->cmd_addr - 1, + dmabuf, cmdbuf->vb_addr, cmdbuf->vb_size, + cmdbuf->vb_stride, + cmdbuf->nbox, cmdbuf->box_addr); + 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(); + ret = -EINVAL; + goto done; + } + ret = savage_dispatch_state(dev_priv, &cmd_header, + (const uint32_t *)cmdbuf->cmd_addr); + cmdbuf->cmd_addr += 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(); + ret = -EINVAL; + goto done; + } + ret = savage_dispatch_clear(dev_priv, &cmd_header, + cmdbuf->cmd_addr, + cmdbuf->nbox, + cmdbuf->box_addr); + cmdbuf->cmd_addr++; + i++; + break; + case SAVAGE_CMD_SWAP: + ret = savage_dispatch_swap(dev_priv, cmdbuf->nbox, + cmdbuf->box_addr); + break; + default: + DRM_ERROR("invalid command 0x%x\n", + cmd_header.cmd.cmd); + DMA_FLUSH(); + ret = -EINVAL; + goto done; + } + + if (ret != 0) { + DMA_FLUSH(); + goto done; + } + } + + if (first_draw_cmd) { + ret = savage_dispatch_draw ( + dev_priv, first_draw_cmd, cmdbuf->cmd_addr, dmabuf, + cmdbuf->vb_addr, cmdbuf->vb_size, cmdbuf->vb_stride, + cmdbuf->nbox, cmdbuf->box_addr); + if (ret != 0) { + DMA_FLUSH(); + goto done; + } + } + + 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); + } + +done: + /* If we didn't need to allocate them, these'll be NULL */ + drm_free(kcmd_addr, cmdbuf->size * 8, DRM_MEM_DRIVER); + drm_free(kvb_addr, cmdbuf->vb_size, DRM_MEM_DRIVER); + drm_free(kbox_addr, cmdbuf->nbox * sizeof(struct drm_clip_rect), + DRM_MEM_DRIVER); + + return ret; +} |