diff options
Diffstat (limited to 'drivers/gpu/drm/i830')
| -rw-r--r-- | drivers/gpu/drm/i830/Makefile | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i830/i830_dma.c | 1553 | ||||
| -rw-r--r-- | drivers/gpu/drm/i830/i830_drv.c | 108 | ||||
| -rw-r--r-- | drivers/gpu/drm/i830/i830_drv.h | 292 | ||||
| -rw-r--r-- | drivers/gpu/drm/i830/i830_irq.c | 186 |
5 files changed, 2147 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i830/Makefile b/drivers/gpu/drm/i830/Makefile new file mode 100644 index 0000000..c642ee0 --- /dev/null +++ b/drivers/gpu/drm/i830/Makefile @@ -0,0 +1,8 @@ +# +# 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 +i830-y := i830_drv.o i830_dma.o i830_irq.o + +obj-$(CONFIG_DRM_I830) += i830.o diff --git a/drivers/gpu/drm/i830/i830_dma.c b/drivers/gpu/drm/i830/i830_dma.c new file mode 100644 index 0000000..a86ab30 --- /dev/null +++ b/drivers/gpu/drm/i830/i830_dma.c @@ -0,0 +1,1553 @@ +/* i830_dma.c -- DMA support for the I830 -*- linux-c -*- + * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * 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, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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. + * + * Authors: Rickard E. (Rik) Faith <faith@valinux.com> + * Jeff Hartmann <jhartmann@valinux.com> + * Keith Whitwell <keith@tungstengraphics.com> + * Abraham vd Merwe <abraham@2d3d.co.za> + * + */ + +#include "drmP.h" +#include "drm.h" +#include "i830_drm.h" +#include "i830_drv.h" +#include <linux/interrupt.h> /* For task queue support */ +#include <linux/pagemap.h> +#include <linux/delay.h> +#include <asm/uaccess.h> + +#define I830_BUF_FREE 2 +#define I830_BUF_CLIENT 1 +#define I830_BUF_HARDWARE 0 + +#define I830_BUF_UNMAPPED 0 +#define I830_BUF_MAPPED 1 + +static struct drm_buf *i830_freelist_get(struct drm_device * dev) +{ + struct drm_device_dma *dma = dev->dma; + int i; + int used; + + /* Linear search might not be the best solution */ + + for (i = 0; i < dma->buf_count; i++) { + struct drm_buf *buf = dma->buflist[i]; + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + /* In use is already a pointer */ + used = cmpxchg(buf_priv->in_use, I830_BUF_FREE, + I830_BUF_CLIENT); + if (used == I830_BUF_FREE) { + return buf; + } + } + return NULL; +} + +/* This should only be called if the buffer is not sent to the hardware + * yet, the hardware updates in use for us once its on the ring buffer. + */ + +static int i830_freelist_put(struct drm_device * dev, struct drm_buf * buf) +{ + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + int used; + + /* In use is already a pointer */ + used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, I830_BUF_FREE); + if (used != I830_BUF_CLIENT) { + DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx); + return -EINVAL; + } + + return 0; +} + +static int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *priv = filp->private_data; + struct drm_device *dev; + drm_i830_private_t *dev_priv; + struct drm_buf *buf; + drm_i830_buf_priv_t *buf_priv; + + lock_kernel(); + dev = priv->minor->dev; + dev_priv = dev->dev_private; + buf = dev_priv->mmap_buffer; + buf_priv = buf->dev_private; + + vma->vm_flags |= (VM_IO | VM_DONTCOPY); + vma->vm_file = filp; + + buf_priv->currently_mapped = I830_BUF_MAPPED; + unlock_kernel(); + + if (io_remap_pfn_range(vma, vma->vm_start, + vma->vm_pgoff, + vma->vm_end - vma->vm_start, vma->vm_page_prot)) + return -EAGAIN; + return 0; +} + +static const struct file_operations i830_buffer_fops = { + .open = drm_open, + .release = drm_release, + .ioctl = drm_ioctl, + .mmap = i830_mmap_buffers, + .fasync = drm_fasync, +}; + +static int i830_map_buffer(struct drm_buf * buf, struct drm_file *file_priv) +{ + struct drm_device *dev = file_priv->minor->dev; + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + drm_i830_private_t *dev_priv = dev->dev_private; + const struct file_operations *old_fops; + unsigned long virtual; + int retcode = 0; + + if (buf_priv->currently_mapped == I830_BUF_MAPPED) + return -EINVAL; + + down_write(¤t->mm->mmap_sem); + old_fops = file_priv->filp->f_op; + file_priv->filp->f_op = &i830_buffer_fops; + dev_priv->mmap_buffer = buf; + virtual = do_mmap(file_priv->filp, 0, buf->total, PROT_READ | PROT_WRITE, + MAP_SHARED, buf->bus_address); + dev_priv->mmap_buffer = NULL; + file_priv->filp->f_op = old_fops; + if (IS_ERR((void *)virtual)) { /* ugh */ + /* Real error */ + DRM_ERROR("mmap error\n"); + retcode = PTR_ERR((void *)virtual); + buf_priv->virtual = NULL; + } else { + buf_priv->virtual = (void __user *)virtual; + } + up_write(¤t->mm->mmap_sem); + + return retcode; +} + +static int i830_unmap_buffer(struct drm_buf * buf) +{ + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + int retcode = 0; + + if (buf_priv->currently_mapped != I830_BUF_MAPPED) + return -EINVAL; + + down_write(¤t->mm->mmap_sem); + retcode = do_munmap(current->mm, + (unsigned long)buf_priv->virtual, + (size_t) buf->total); + up_write(¤t->mm->mmap_sem); + + buf_priv->currently_mapped = I830_BUF_UNMAPPED; + buf_priv->virtual = NULL; + + return retcode; +} + +static int i830_dma_get_buffer(struct drm_device * dev, drm_i830_dma_t * d, + struct drm_file *file_priv) +{ + struct drm_buf *buf; + drm_i830_buf_priv_t *buf_priv; + int retcode = 0; + + buf = i830_freelist_get(dev); + if (!buf) { + retcode = -ENOMEM; + DRM_DEBUG("retcode=%d\n", retcode); + return retcode; + } + + retcode = i830_map_buffer(buf, file_priv); + if (retcode) { + i830_freelist_put(dev, buf); + DRM_ERROR("mapbuf failed, retcode %d\n", retcode); + return retcode; + } + buf->file_priv = file_priv; + buf_priv = buf->dev_private; + d->granted = 1; + d->request_idx = buf->idx; + d->request_size = buf->total; + d->virtual = buf_priv->virtual; + + return retcode; +} + +static int i830_dma_cleanup(struct drm_device * dev) +{ + struct drm_device_dma *dma = dev->dma; + + /* Make sure interrupts are disabled here because the uninstall ioctl + * may not have been called from userspace and after dev_private + * is freed, it's too late. + */ + if (dev->irq_enabled) + drm_irq_uninstall(dev); + + if (dev->dev_private) { + int i; + drm_i830_private_t *dev_priv = + (drm_i830_private_t *) dev->dev_private; + + if (dev_priv->ring.virtual_start) { + drm_core_ioremapfree(&dev_priv->ring.map, dev); + } + if (dev_priv->hw_status_page) { + pci_free_consistent(dev->pdev, PAGE_SIZE, + dev_priv->hw_status_page, + dev_priv->dma_status_page); + /* Need to rewrite hardware status page */ + I830_WRITE(0x02080, 0x1ffff000); + } + + drm_free(dev->dev_private, sizeof(drm_i830_private_t), + DRM_MEM_DRIVER); + dev->dev_private = NULL; + + for (i = 0; i < dma->buf_count; i++) { + struct drm_buf *buf = dma->buflist[i]; + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + if (buf_priv->kernel_virtual && buf->total) + drm_core_ioremapfree(&buf_priv->map, dev); + } + } + return 0; +} + +int i830_wait_ring(struct drm_device * dev, int n, const char *caller) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_ring_buffer_t *ring = &(dev_priv->ring); + int iters = 0; + unsigned long end; + unsigned int last_head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR; + + end = jiffies + (HZ * 3); + while (ring->space < n) { + ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR; + ring->space = ring->head - (ring->tail + 8); + if (ring->space < 0) + ring->space += ring->Size; + + if (ring->head != last_head) { + end = jiffies + (HZ * 3); + last_head = ring->head; + } + + iters++; + if (time_before(end, jiffies)) { + DRM_ERROR("space: %d wanted %d\n", ring->space, n); + DRM_ERROR("lockup\n"); + goto out_wait_ring; + } + udelay(1); + dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT; + } + + out_wait_ring: + return iters; +} + +static void i830_kernel_lost_context(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_ring_buffer_t *ring = &(dev_priv->ring); + + ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR; + ring->tail = I830_READ(LP_RING + RING_TAIL) & TAIL_ADDR; + ring->space = ring->head - (ring->tail + 8); + if (ring->space < 0) + ring->space += ring->Size; + + if (ring->head == ring->tail) + dev_priv->sarea_priv->perf_boxes |= I830_BOX_RING_EMPTY; +} + +static int i830_freelist_init(struct drm_device * dev, drm_i830_private_t * dev_priv) +{ + struct drm_device_dma *dma = dev->dma; + int my_idx = 36; + u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx); + int i; + + if (dma->buf_count > 1019) { + /* Not enough space in the status page for the freelist */ + return -EINVAL; + } + + for (i = 0; i < dma->buf_count; i++) { + struct drm_buf *buf = dma->buflist[i]; + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + + buf_priv->in_use = hw_status++; + buf_priv->my_use_idx = my_idx; + my_idx += 4; + + *buf_priv->in_use = I830_BUF_FREE; + + buf_priv->map.offset = buf->bus_address; + buf_priv->map.size = buf->total; + buf_priv->map.type = _DRM_AGP; + buf_priv->map.flags = 0; + buf_priv->map.mtrr = 0; + + drm_core_ioremap(&buf_priv->map, dev); + buf_priv->kernel_virtual = buf_priv->map.handle; + } + return 0; +} + +static int i830_dma_initialize(struct drm_device * dev, + drm_i830_private_t * dev_priv, + drm_i830_init_t * init) +{ + struct drm_map_list *r_list; + + memset(dev_priv, 0, sizeof(drm_i830_private_t)); + + list_for_each_entry(r_list, &dev->maplist, head) { + if (r_list->map && + r_list->map->type == _DRM_SHM && + r_list->map->flags & _DRM_CONTAINS_LOCK) { + dev_priv->sarea_map = r_list->map; + break; + } + } + + if (!dev_priv->sarea_map) { + dev->dev_private = (void *)dev_priv; + i830_dma_cleanup(dev); + DRM_ERROR("can not find sarea!\n"); + return -EINVAL; + } + dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset); + if (!dev_priv->mmio_map) { + dev->dev_private = (void *)dev_priv; + i830_dma_cleanup(dev); + DRM_ERROR("can not find mmio map!\n"); + return -EINVAL; + } + dev->agp_buffer_token = init->buffers_offset; + dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset); + if (!dev->agp_buffer_map) { + dev->dev_private = (void *)dev_priv; + i830_dma_cleanup(dev); + DRM_ERROR("can not find dma buffer map!\n"); + return -EINVAL; + } + + dev_priv->sarea_priv = (drm_i830_sarea_t *) + ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset); + + dev_priv->ring.Start = init->ring_start; + dev_priv->ring.End = init->ring_end; + dev_priv->ring.Size = init->ring_size; + + dev_priv->ring.map.offset = dev->agp->base + init->ring_start; + dev_priv->ring.map.size = init->ring_size; + dev_priv->ring.map.type = _DRM_AGP; + dev_priv->ring.map.flags = 0; + dev_priv->ring.map.mtrr = 0; + + drm_core_ioremap(&dev_priv->ring.map, dev); + + if (dev_priv->ring.map.handle == NULL) { + dev->dev_private = (void *)dev_priv; + i830_dma_cleanup(dev); + DRM_ERROR("can not ioremap virtual address for" + " ring buffer\n"); + return -ENOMEM; + } + + dev_priv->ring.virtual_start = dev_priv->ring.map.handle; + + dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; + + dev_priv->w = init->w; + dev_priv->h = init->h; + dev_priv->pitch = init->pitch; + dev_priv->back_offset = init->back_offset; + dev_priv->depth_offset = init->depth_offset; + dev_priv->front_offset = init->front_offset; + + dev_priv->front_di1 = init->front_offset | init->pitch_bits; + dev_priv->back_di1 = init->back_offset | init->pitch_bits; + dev_priv->zi1 = init->depth_offset | init->pitch_bits; + + DRM_DEBUG("front_di1 %x\n", dev_priv->front_di1); + DRM_DEBUG("back_offset %x\n", dev_priv->back_offset); + DRM_DEBUG("back_di1 %x\n", dev_priv->back_di1); + DRM_DEBUG("pitch_bits %x\n", init->pitch_bits); + + dev_priv->cpp = init->cpp; + /* We are using separate values as placeholders for mechanisms for + * private backbuffer/depthbuffer usage. + */ + + dev_priv->back_pitch = init->back_pitch; + dev_priv->depth_pitch = init->depth_pitch; + dev_priv->do_boxes = 0; + dev_priv->use_mi_batchbuffer_start = 0; + + /* Program Hardware Status Page */ + dev_priv->hw_status_page = + pci_alloc_consistent(dev->pdev, PAGE_SIZE, + &dev_priv->dma_status_page); + if (!dev_priv->hw_status_page) { + dev->dev_private = (void *)dev_priv; + i830_dma_cleanup(dev); + DRM_ERROR("Can not allocate hardware status page\n"); + return -ENOMEM; + } + memset(dev_priv->hw_status_page, 0, PAGE_SIZE); + DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page); + + I830_WRITE(0x02080, dev_priv->dma_status_page); + DRM_DEBUG("Enabled hardware status page\n"); + + /* Now we need to init our freelist */ + if (i830_freelist_init(dev, dev_priv) != 0) { + dev->dev_private = (void *)dev_priv; + i830_dma_cleanup(dev); + DRM_ERROR("Not enough space in the status page for" + " the freelist\n"); + return -ENOMEM; + } + dev->dev_private = (void *)dev_priv; + + return 0; +} + +static int i830_dma_init(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv; + drm_i830_init_t *init = data; + int retcode = 0; + + switch (init->func) { + case I830_INIT_DMA: + dev_priv = drm_alloc(sizeof(drm_i830_private_t), + DRM_MEM_DRIVER); + if (dev_priv == NULL) + return -ENOMEM; + retcode = i830_dma_initialize(dev, dev_priv, init); + break; + case I830_CLEANUP_DMA: + retcode = i830_dma_cleanup(dev); + break; + default: + retcode = -EINVAL; + break; + } + + return retcode; +} + +#define GFX_OP_STIPPLE ((0x3<<29)|(0x1d<<24)|(0x83<<16)) +#define ST1_ENABLE (1<<16) +#define ST1_MASK (0xffff) + +/* Most efficient way to verify state for the i830 is as it is + * emitted. Non-conformant state is silently dropped. + */ +static void i830EmitContextVerified(struct drm_device * dev, unsigned int *code) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + int i, j = 0; + unsigned int tmp; + RING_LOCALS; + + BEGIN_LP_RING(I830_CTX_SETUP_SIZE + 4); + + for (i = 0; i < I830_CTXREG_BLENDCOLR0; i++) { + tmp = code[i]; + if ((tmp & (7 << 29)) == CMD_3D && + (tmp & (0x1f << 24)) < (0x1d << 24)) { + OUT_RING(tmp); + j++; + } else { + DRM_ERROR("Skipping %d\n", i); + } + } + + OUT_RING(STATE3D_CONST_BLEND_COLOR_CMD); + OUT_RING(code[I830_CTXREG_BLENDCOLR]); + j += 2; + + for (i = I830_CTXREG_VF; i < I830_CTXREG_MCSB0; i++) { + tmp = code[i]; + if ((tmp & (7 << 29)) == CMD_3D && + (tmp & (0x1f << 24)) < (0x1d << 24)) { + OUT_RING(tmp); + j++; + } else { + DRM_ERROR("Skipping %d\n", i); + } + } + + OUT_RING(STATE3D_MAP_COORD_SETBIND_CMD); + OUT_RING(code[I830_CTXREG_MCSB1]); + j += 2; + + if (j & 1) + OUT_RING(0); + + ADVANCE_LP_RING(); +} + +static void i830EmitTexVerified(struct drm_device * dev, unsigned int *code) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + int i, j = 0; + unsigned int tmp; + RING_LOCALS; + + if (code[I830_TEXREG_MI0] == GFX_OP_MAP_INFO || + (code[I830_TEXREG_MI0] & ~(0xf * LOAD_TEXTURE_MAP0)) == + (STATE3D_LOAD_STATE_IMMEDIATE_2 | 4)) { + + BEGIN_LP_RING(I830_TEX_SETUP_SIZE); + + OUT_RING(code[I830_TEXREG_MI0]); /* TM0LI */ + OUT_RING(code[I830_TEXREG_MI1]); /* TM0S0 */ + OUT_RING(code[I830_TEXREG_MI2]); /* TM0S1 */ + OUT_RING(code[I830_TEXREG_MI3]); /* TM0S2 */ + OUT_RING(code[I830_TEXREG_MI4]); /* TM0S3 */ + OUT_RING(code[I830_TEXREG_MI5]); /* TM0S4 */ + + for (i = 6; i < I830_TEX_SETUP_SIZE; i++) { + tmp = code[i]; + OUT_RING(tmp); + j++; + } + + if (j & 1) + OUT_RING(0); + + ADVANCE_LP_RING(); + } else + printk("rejected packet %x\n", code[0]); +} + +static void i830EmitTexBlendVerified(struct drm_device * dev, + unsigned int *code, unsigned int num) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + int i, j = 0; + unsigned int tmp; + RING_LOCALS; + + if (!num) + return; + + BEGIN_LP_RING(num + 1); + + for (i = 0; i < num; i++) { + tmp = code[i]; + OUT_RING(tmp); + j++; + } + + if (j & 1) + OUT_RING(0); + + ADVANCE_LP_RING(); +} + +static void i830EmitTexPalette(struct drm_device * dev, + unsigned int *palette, int number, int is_shared) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + int i; + RING_LOCALS; + + return; + + BEGIN_LP_RING(258); + + if (is_shared == 1) { + OUT_RING(CMD_OP_MAP_PALETTE_LOAD | + MAP_PALETTE_NUM(0) | MAP_PALETTE_BOTH); + } else { + OUT_RING(CMD_OP_MAP_PALETTE_LOAD | MAP_PALETTE_NUM(number)); + } + for (i = 0; i < 256; i++) { + OUT_RING(palette[i]); + } + OUT_RING(0); + /* KW: WHERE IS THE ADVANCE_LP_RING? This is effectively a noop! + */ +} + +/* Need to do some additional checking when setting the dest buffer. + */ +static void i830EmitDestVerified(struct drm_device * dev, unsigned int *code) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + unsigned int tmp; + RING_LOCALS; + + BEGIN_LP_RING(I830_DEST_SETUP_SIZE + 10); + + tmp = code[I830_DESTREG_CBUFADDR]; + if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) { + if (((int)outring) & 8) { + OUT_RING(0); + OUT_RING(0); + } + + OUT_RING(CMD_OP_DESTBUFFER_INFO); + OUT_RING(BUF_3D_ID_COLOR_BACK | + BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) | + BUF_3D_USE_FENCE); + OUT_RING(tmp); + OUT_RING(0); + + OUT_RING(CMD_OP_DESTBUFFER_INFO); + OUT_RING(BUF_3D_ID_DEPTH | BUF_3D_USE_FENCE | + BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp)); + OUT_RING(dev_priv->zi1); + OUT_RING(0); + } else { + DRM_ERROR("bad di1 %x (allow %x or %x)\n", + tmp, dev_priv->front_di1, dev_priv->back_di1); + } + + /* invarient: + */ + + OUT_RING(GFX_OP_DESTBUFFER_VARS); + OUT_RING(code[I830_DESTREG_DV1]); + + OUT_RING(GFX_OP_DRAWRECT_INFO); + OUT_RING(code[I830_DESTREG_DR1]); + OUT_RING(code[I830_DESTREG_DR2]); + OUT_RING(code[I830_DESTREG_DR3]); + OUT_RING(code[I830_DESTREG_DR4]); + + /* Need to verify this */ + tmp = code[I830_DESTREG_SENABLE]; + if ((tmp & ~0x3) == GFX_OP_SCISSOR_ENABLE) { + OUT_RING(tmp); + } else { + DRM_ERROR("bad scissor enable\n"); + OUT_RING(0); + } + + OUT_RING(GFX_OP_SCISSOR_RECT); + OUT_RING(code[I830_DESTREG_SR1]); + OUT_RING(code[I830_DESTREG_SR2]); + OUT_RING(0); + + ADVANCE_LP_RING(); +} + +static void i830EmitStippleVerified(struct drm_device * dev, unsigned int *code) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + BEGIN_LP_RING(2); + OUT_RING(GFX_OP_STIPPLE); + OUT_RING(code[1]); + ADVANCE_LP_RING(); +} + +static void i830EmitState(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv; + unsigned int dirty = sarea_priv->dirty; + + DRM_DEBUG("%s %x\n", __func__, dirty); + + if (dirty & I830_UPLOAD_BUFFERS) { + i830EmitDestVerified(dev, sarea_priv->BufferState); + sarea_priv->dirty &= ~I830_UPLOAD_BUFFERS; + } + + if (dirty & I830_UPLOAD_CTX) { + i830EmitContextVerified(dev, sarea_priv->ContextState); + sarea_priv->dirty &= ~I830_UPLOAD_CTX; + } + + if (dirty & I830_UPLOAD_TEX0) { + i830EmitTexVerified(dev, sarea_priv->TexState[0]); + sarea_priv->dirty &= ~I830_UPLOAD_TEX0; + } + + if (dirty & I830_UPLOAD_TEX1) { + i830EmitTexVerified(dev, sarea_priv->TexState[1]); + sarea_priv->dirty &= ~I830_UPLOAD_TEX1; + } + + if (dirty & I830_UPLOAD_TEXBLEND0) { + i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[0], + sarea_priv->TexBlendStateWordsUsed[0]); + sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND0; + } + + if (dirty & I830_UPLOAD_TEXBLEND1) { + i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[1], + sarea_priv->TexBlendStateWordsUsed[1]); + sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND1; + } + + if (dirty & I830_UPLOAD_TEX_PALETTE_SHARED) { + i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 1); + } else { + if (dirty & I830_UPLOAD_TEX_PALETTE_N(0)) { + i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 0); + sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(0); + } + if (dirty & I830_UPLOAD_TEX_PALETTE_N(1)) { + i830EmitTexPalette(dev, sarea_priv->Palette[1], 1, 0); + sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(1); + } + + /* 1.3: + */ +#if 0 + if (dirty & I830_UPLOAD_TEX_PALETTE_N(2)) { + i830EmitTexPalette(dev, sarea_priv->Palette2[0], 0, 0); + sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2); + } + if (dirty & I830_UPLOAD_TEX_PALETTE_N(3)) { + i830EmitTexPalette(dev, sarea_priv->Palette2[1], 1, 0); + sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2); + } +#endif + } + + /* 1.3: + */ + if (dirty & I830_UPLOAD_STIPPLE) { + i830EmitStippleVerified(dev, sarea_priv->StippleState); + sarea_priv->dirty &= ~I830_UPLOAD_STIPPLE; + } + + if (dirty & I830_UPLOAD_TEX2) { + i830EmitTexVerified(dev, sarea_priv->TexState2); + sarea_priv->dirty &= ~I830_UPLOAD_TEX2; + } + + if (dirty & I830_UPLOAD_TEX3) { + i830EmitTexVerified(dev, sarea_priv->TexState3); + sarea_priv->dirty &= ~I830_UPLOAD_TEX3; + } + + if (dirty & I830_UPLOAD_TEXBLEND2) { + i830EmitTexBlendVerified(dev, + sarea_priv->TexBlendState2, + sarea_priv->TexBlendStateWordsUsed2); + + sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND2; + } + + if (dirty & I830_UPLOAD_TEXBLEND3) { + i830EmitTexBlendVerified(dev, + sarea_priv->TexBlendState3, + sarea_priv->TexBlendStateWordsUsed3); + sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND3; + } +} + +/* ================================================================ + * Performance monitoring functions + */ + +static void i830_fill_box(struct drm_device * dev, + int x, int y, int w, int h, int r, int g, int b) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + u32 color; + unsigned int BR13, CMD; + RING_LOCALS; + + BR13 = (0xF0 << 16) | (dev_priv->pitch * dev_priv->cpp) | (1 << 24); + CMD = XY_COLOR_BLT_CMD; + x += dev_priv->sarea_priv->boxes[0].x1; + y += dev_priv->sarea_priv->boxes[0].y1; + + if (dev_priv->cpp == 4) { + BR13 |= (1 << 25); + CMD |= (XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB); + color = (((0xff) << 24) | (r << 16) | (g << 8) | b); + } else { + color = (((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | ((b & 0xf8) >> 3)); + } + + BEGIN_LP_RING(6); + OUT_RING(CMD); + OUT_RING(BR13); + OUT_RING((y << 16) | x); + OUT_RING(((y + h) << 16) | (x + w)); + + if (dev_priv->current_page == 1) { + OUT_RING(dev_priv->front_offset); + } else { + OUT_RING(dev_priv->back_offset); + } + + OUT_RING(color); + ADVANCE_LP_RING(); +} + +static void i830_cp_performance_boxes(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + + /* Purple box for page flipping + */ + if (dev_priv->sarea_priv->perf_boxes & I830_BOX_FLIP) + i830_fill_box(dev, 4, 4, 8, 8, 255, 0, 255); + + /* Red box if we have to wait for idle at any point + */ + if (dev_priv->sarea_priv->perf_boxes & I830_BOX_WAIT) + i830_fill_box(dev, 16, 4, 8, 8, 255, 0, 0); + + /* Blue box: lost context? + */ + if (dev_priv->sarea_priv->perf_boxes & I830_BOX_LOST_CONTEXT) + i830_fill_box(dev, 28, 4, 8, 8, 0, 0, 255); + + /* Yellow box for texture swaps + */ + if (dev_priv->sarea_priv->perf_boxes & I830_BOX_TEXTURE_LOAD) + i830_fill_box(dev, 40, 4, 8, 8, 255, 255, 0); + + /* Green box if hardware never idles (as far as we can tell) + */ + if (!(dev_priv->sarea_priv->perf_boxes & I830_BOX_RING_EMPTY)) + i830_fill_box(dev, 64, 4, 8, 8, 0, 255, 0); + + /* Draw bars indicating number of buffers allocated + * (not a great measure, easily confused) + */ + if (dev_priv->dma_used) { + int bar = dev_priv->dma_used / 10240; + if (bar > 100) + bar = 100; + if (bar < 1) + bar = 1; + i830_fill_box(dev, 4, 16, bar, 4, 196, 128, 128); + dev_priv->dma_used = 0; + } + + dev_priv->sarea_priv->perf_boxes = 0; +} + +static void i830_dma_dispatch_clear(struct drm_device * dev, int flags, + unsigned int clear_color, + unsigned int clear_zval, + unsigned int clear_depthmask) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv; + int nbox = sarea_priv->nbox; + struct drm_clip_rect *pbox = sarea_priv->boxes; + int pitch = dev_priv->pitch; + int cpp = dev_priv->cpp; + int i; + unsigned int BR13, CMD, D_CMD; + RING_LOCALS; + + if (dev_priv->current_page == 1) { + unsigned int tmp = flags; + + flags &= ~(I830_FRONT | I830_BACK); + if (tmp & I830_FRONT) + flags |= I830_BACK; + if (tmp & I830_BACK) + flags |= I830_FRONT; + } + + i830_kernel_lost_context(dev); + + switch (cpp) { + case 2: + BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24); + D_CMD = CMD = XY_COLOR_BLT_CMD; + break; + case 4: + BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24) | (1 << 25); + CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA | + XY_COLOR_BLT_WRITE_RGB); + D_CMD = XY_COLOR_BLT_CMD; + if (clear_depthmask & 0x00ffffff) + D_CMD |= XY_COLOR_BLT_WRITE_RGB; + if (clear_depthmask & 0xff000000) + D_CMD |= XY_COLOR_BLT_WRITE_ALPHA; + break; + default: + BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24); + D_CMD = CMD = XY_COLOR_BLT_CMD; + break; + } + + if (nbox > I830_NR_SAREA_CLIPRECTS) + nbox = I830_NR_SAREA_CLIPRECTS; + + for (i = 0; i < nbox; i++, pbox++) { + if (pbox->x1 > pbox->x2 || + pbox->y1 > pbox->y2 || + pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h) + continue; + + if (flags & I830_FRONT) { + DRM_DEBUG("clear front\n"); + BEGIN_LP_RING(6); + OUT_RING(CMD); + OUT_RING(BR13); + OUT_RING((pbox->y1 << 16) | pbox->x1); + OUT_RING((pbox->y2 << 16) | pbox->x2); + OUT_RING(dev_priv->front_offset); + OUT_RING(clear_color); + ADVANCE_LP_RING(); + } + + if (flags & I830_BACK) { + DRM_DEBUG("clear back\n"); + BEGIN_LP_RING(6); + OUT_RING(CMD); + OUT_RING(BR13); + OUT_RING((pbox->y1 << 16) | pbox->x1); + OUT_RING((pbox->y2 << 16) | pbox->x2); + OUT_RING(dev_priv->back_offset); + OUT_RING(clear_color); + ADVANCE_LP_RING(); + } + + if (flags & I830_DEPTH) { + DRM_DEBUG("clear depth\n"); + BEGIN_LP_RING(6); + OUT_RING(D_CMD); + OUT_RING(BR13); + OUT_RING((pbox->y1 << 16) | pbox->x1); + OUT_RING((pbox->y2 << 16) | pbox->x2); + OUT_RING(dev_priv->depth_offset); + OUT_RING(clear_zval); + ADVANCE_LP_RING(); + } + } +} + +static void i830_dma_dispatch_swap(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv; + int nbox = sarea_priv->nbox; + struct drm_clip_rect *pbox = sarea_priv->boxes; + int pitch = dev_priv->pitch; + int cpp = dev_priv->cpp; + int i; + unsigned int CMD, BR13; + RING_LOCALS; + + DRM_DEBUG("swapbuffers\n"); + + i830_kernel_lost_context(dev); + + if (dev_priv->do_boxes) + i830_cp_performance_boxes(dev); + + switch (cpp) { + case 2: + BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24); + CMD = XY_SRC_COPY_BLT_CMD; + break; + case 4: + BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25); + CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA | + XY_SRC_COPY_BLT_WRITE_RGB); + break; + default: + BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24); + CMD = XY_SRC_COPY_BLT_CMD; + break; + } + + if (nbox > I830_NR_SAREA_CLIPRECTS) + nbox = I830_NR_SAREA_CLIPRECTS; + + for (i = 0; i < nbox; i++, pbox++) { + if (pbox->x1 > pbox->x2 || + pbox->y1 > pbox->y2 || + pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h) + continue; + + DRM_DEBUG("dispatch swap %d,%d-%d,%d!\n", + pbox->x1, pbox->y1, pbox->x2, pbox->y2); + + BEGIN_LP_RING(8); + OUT_RING(CMD); + OUT_RING(BR13); + OUT_RING((pbox->y1 << 16) | pbox->x1); + OUT_RING((pbox->y2 << 16) | pbox->x2); + + if (dev_priv->current_page == 0) + OUT_RING(dev_priv->front_offset); + else + OUT_RING(dev_priv->back_offset); + + OUT_RING((pbox->y1 << 16) | pbox->x1); + OUT_RING(BR13 & 0xffff); + + if (dev_priv->current_page == 0) + OUT_RING(dev_priv->back_offset); + else + OUT_RING(dev_priv->front_offset); + + ADVANCE_LP_RING(); + } +} + +static void i830_dma_dispatch_flip(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n", + __func__, + dev_priv->current_page, + dev_priv->sarea_priv->pf_current_page); + + i830_kernel_lost_context(dev); + + if (dev_priv->do_boxes) { + dev_priv->sarea_priv->perf_boxes |= I830_BOX_FLIP; + i830_cp_performance_boxes(dev); + } + + BEGIN_LP_RING(2); + OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE); + OUT_RING(0); + ADVANCE_LP_RING(); + + BEGIN_LP_RING(6); + OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP); + OUT_RING(0); + if (dev_priv->current_page == 0) { + OUT_RING(dev_priv->back_offset); + dev_priv->current_page = 1; + } else { + OUT_RING(dev_priv->front_offset); + dev_priv->current_page = 0; + } + OUT_RING(0); + ADVANCE_LP_RING(); + + BEGIN_LP_RING(2); + OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP); + OUT_RING(0); + ADVANCE_LP_RING(); + + dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; +} + +static void i830_dma_dispatch_vertex(struct drm_device * dev, + struct drm_buf * buf, int discard, int used) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv; + struct drm_clip_rect *box = sarea_priv->boxes; + int nbox = sarea_priv->nbox; + unsigned long address = (unsigned long)buf->bus_address; + unsigned long start = address - dev->agp->base; + int i = 0, u; + RING_LOCALS; + + i830_kernel_lost_context(dev); + + if (nbox > I830_NR_SAREA_CLIPRECTS) + nbox = I830_NR_SAREA_CLIPRECTS; + + if (discard) { + u = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, + I830_BUF_HARDWARE); + if (u != I830_BUF_CLIENT) { + DRM_DEBUG("xxxx 2\n"); + } + } + + if (used > 4 * 1023) + used = 0; + + if (sarea_priv->dirty) + i830EmitState(dev); + + DRM_DEBUG("dispatch vertex addr 0x%lx, used 0x%x nbox %d\n", + address, used, nbox); + + dev_priv->counter++; + DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter); + DRM_DEBUG("i830_dma_dispatch\n"); + DRM_DEBUG("start : %lx\n", start); + DRM_DEBUG("used : %d\n", used); + DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4); + + if (buf_priv->currently_mapped == I830_BUF_MAPPED) { + u32 *vp = buf_priv->kernel_virtual; + + vp[0] = (GFX_OP_PRIMITIVE | + sarea_priv->vertex_prim | ((used / 4) - 2)); + + if (dev_priv->use_mi_batchbuffer_start) { + vp[used / 4] = MI_BATCH_BUFFER_END; + used += 4; + } + + if (used & 4) { + vp[used / 4] = 0; + used += 4; + } + + i830_unmap_buffer(buf); + } + + if (used) { + do { + if (i < nbox) { + BEGIN_LP_RING(6); + OUT_RING(GFX_OP_DRAWRECT_INFO); + OUT_RING(sarea_priv-> + BufferState[I830_DESTREG_DR1]); + OUT_RING(box[i].x1 | (box[i].y1 << 16)); + OUT_RING(box[i].x2 | (box[i].y2 << 16)); + OUT_RING(sarea_priv-> + BufferState[I830_DESTREG_DR4]); + OUT_RING(0); + ADVANCE_LP_RING(); + } + + if (dev_priv->use_mi_batchbuffer_start) { + BEGIN_LP_RING(2); + OUT_RING(MI_BATCH_BUFFER_START | (2 << 6)); + OUT_RING(start | MI_BATCH_NON_SECURE); + ADVANCE_LP_RING(); + } else { + BEGIN_LP_RING(4); + OUT_RING(MI_BATCH_BUFFER); + OUT_RING(start | MI_BATCH_NON_SECURE); + OUT_RING(start + used - 4); + OUT_RING(0); + ADVANCE_LP_RING(); + } + + } while (++i < nbox); + } + + if (discard) { + dev_priv->counter++; + + (void)cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, + I830_BUF_HARDWARE); + + BEGIN_LP_RING(8); + OUT_RING(CMD_STORE_DWORD_IDX); + OUT_RING(20); + OUT_RING(dev_priv->counter); + OUT_RING(CMD_STORE_DWORD_IDX); + OUT_RING(buf_priv->my_use_idx); + OUT_RING(I830_BUF_FREE); + OUT_RING(CMD_REPORT_HEAD); + OUT_RING(0); + ADVANCE_LP_RING(); + } +} + +static void i830_dma_quiescent(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + i830_kernel_lost_context(dev); + + BEGIN_LP_RING(4); + OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE); + OUT_RING(CMD_REPORT_HEAD); + OUT_RING(0); + OUT_RING(0); + ADVANCE_LP_RING(); + + i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__); +} + +static int i830_flush_queue(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + struct drm_device_dma *dma = dev->dma; + int i, ret = 0; + RING_LOCALS; + + i830_kernel_lost_context(dev); + + BEGIN_LP_RING(2); + OUT_RING(CMD_REPORT_HEAD); + OUT_RING(0); + ADVANCE_LP_RING(); + + i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__); + + for (i = 0; i < dma->buf_count; i++) { + struct drm_buf *buf = dma->buflist[i]; + drm_i830_buf_priv_t *buf_priv = buf->dev_private; + + int used = cmpxchg(buf_priv->in_use, I830_BUF_HARDWARE, + I830_BUF_FREE); + + if (used == I830_BUF_HARDWARE) + DRM_DEBUG("reclaimed from HARDWARE\n"); + if (used == I830_BUF_CLIENT) + DRM_DEBUG("still on client\n"); + } + + return ret; +} + +/* Must be called with the lock held */ +static void i830_reclaim_buffers(struct drm_device * dev, struct drm_file *file_priv) +{ + struct drm_device_dma *dma = dev->dma; + int i; + + if (!dma) + return; + if (!dev->dev_private) + 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_i830_buf_priv_t *buf_priv = buf->dev_private; + + if (buf->file_priv == file_priv && buf_priv) { + int used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, + I830_BUF_FREE); + + if (used == I830_BUF_CLIENT) + DRM_DEBUG("reclaimed from client\n"); + if (buf_priv->currently_mapped == I830_BUF_MAPPED) + buf_priv->currently_mapped = I830_BUF_UNMAPPED; + } + } +} + +static int i830_flush_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + LOCK_TEST_WITH_RETURN(dev, file_priv); + + i830_flush_queue(dev); + return 0; +} + +static int i830_dma_vertex(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_device_dma *dma = dev->dma; + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + u32 *hw_status = dev_priv->hw_status_page; + drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) + dev_priv->sarea_priv; + drm_i830_vertex_t *vertex = data; + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + DRM_DEBUG("i830 dma vertex, idx %d used %d discard %d\n", + vertex->idx, vertex->used, vertex->discard); + + if (vertex->idx < 0 || vertex->idx > dma->buf_count) + return -EINVAL; + + i830_dma_dispatch_vertex(dev, + dma->buflist[vertex->idx], + vertex->discard, vertex->used); + + sarea_priv->last_enqueue = dev_priv->counter - 1; + sarea_priv->last_dispatch = (int)hw_status[5]; + + return 0; +} + +static int i830_clear_bufs(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_clear_t *clear = data; + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + /* GH: Someone's doing nasty things... */ + if (!dev->dev_private) { + return -EINVAL; + } + + i830_dma_dispatch_clear(dev, clear->flags, + clear->clear_color, + clear->clear_depth, clear->clear_depthmask); + return 0; +} + +static int i830_swap_bufs(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + DRM_DEBUG("i830_swap_bufs\n"); + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + i830_dma_dispatch_swap(dev); + return 0; +} + +/* Not sure why this isn't set all the time: + */ +static void i830_do_init_pageflip(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("%s\n", __func__); + dev_priv->page_flipping = 1; + dev_priv->current_page = 0; + dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; +} + +static int i830_do_cleanup_pageflip(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("%s\n", __func__); + if (dev_priv->current_page != 0) + i830_dma_dispatch_flip(dev); + + dev_priv->page_flipping = 0; + return 0; +} + +static int i830_flip_bufs(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + + DRM_DEBUG("%s\n", __func__); + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + if (!dev_priv->page_flipping) + i830_do_init_pageflip(dev); + + i830_dma_dispatch_flip(dev); + return 0; +} + +static int i830_getage(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + u32 *hw_status = dev_priv->hw_status_page; + drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) + dev_priv->sarea_priv; + + sarea_priv->last_dispatch = (int)hw_status[5]; + return 0; +} + +static int i830_getbuf(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + int retcode = 0; + drm_i830_dma_t *d = data; + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + u32 *hw_status = dev_priv->hw_status_page; + drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *) + dev_priv->sarea_priv; + + DRM_DEBUG("getbuf\n"); + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + d->granted = 0; + + retcode = i830_dma_get_buffer(dev, d, file_priv); + + DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n", + task_pid_nr(current), retcode, d->granted); + + sarea_priv->last_dispatch = (int)hw_status[5]; + + return retcode; +} + +static int i830_copybuf(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + /* Never copy - 2.4.x doesn't need it */ + return 0; +} + +static int i830_docopy(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return 0; +} + +static int i830_getparam(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_getparam_t *param = data; + int value; + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __func__); + return -EINVAL; + } + + switch (param->param) { + case I830_PARAM_IRQ_ACTIVE: + value = dev->irq_enabled; + break; + default: + return -EINVAL; + } + + if (copy_to_user(param->value, &value, sizeof(int))) { + DRM_ERROR("copy_to_user\n"); + return -EFAULT; + } + + return 0; +} + +static int i830_setparam(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_setparam_t *param = data; + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __func__); + return -EINVAL; + } + + switch (param->param) { + case I830_SETPARAM_USE_MI_BATCHBUFFER_START: + dev_priv->use_mi_batchbuffer_start = param->value; + break; + default: + return -EINVAL; + } + + return 0; +} + +int i830_driver_load(struct drm_device *dev, unsigned long flags) +{ + /* i830 has 4 more counters */ + dev->counters += 4; + dev->types[6] = _DRM_STAT_IRQ; + dev->types[7] = _DRM_STAT_PRIMARY; + dev->types[8] = _DRM_STAT_SECONDARY; + dev->types[9] = _DRM_STAT_DMA; + + return 0; +} + +void i830_driver_lastclose(struct drm_device * dev) +{ + i830_dma_cleanup(dev); +} + +void i830_driver_preclose(struct drm_device * dev, struct drm_file *file_priv) +{ + if (dev->dev_private) { + drm_i830_private_t *dev_priv = dev->dev_private; + if (dev_priv->page_flipping) { + i830_do_cleanup_pageflip(dev); + } + } +} + +void i830_driver_reclaim_buffers_locked(struct drm_device * dev, struct drm_file *file_priv) +{ + i830_reclaim_buffers(dev, file_priv); +} + +int i830_driver_dma_quiescent(struct drm_device * dev) +{ + i830_dma_quiescent(dev); + return 0; +} + +struct drm_ioctl_desc i830_ioctls[] = { + DRM_IOCTL_DEF(DRM_I830_INIT, i830_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I830_VERTEX, i830_dma_vertex, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_CLEAR, i830_clear_bufs, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_FLUSH, i830_flush_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_GETAGE, i830_getage, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_GETBUF, i830_getbuf, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_SWAP, i830_swap_bufs, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_COPY, i830_copybuf, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_DOCOPY, i830_docopy, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_FLIP, i830_flip_bufs, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_IRQ_EMIT, i830_irq_emit, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_IRQ_WAIT, i830_irq_wait, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_GETPARAM, i830_getparam, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I830_SETPARAM, i830_setparam, DRM_AUTH) +}; + +int i830_max_ioctl = DRM_ARRAY_SIZE(i830_ioctls); + +/** + * Determine if the device really is AGP or not. + * + * All Intel graphics chipsets are treated as AGP, even if they are really + * PCI-e. + * + * \param dev The device to be tested. + * + * \returns + * A value of 1 is always retured to indictate every i8xx is AGP. + */ +int i830_driver_device_is_agp(struct drm_device * dev) +{ + return 1; +} diff --git a/drivers/gpu/drm/i830/i830_drv.c b/drivers/gpu/drm/i830/i830_drv.c new file mode 100644 index 0000000..389597e --- /dev/null +++ b/drivers/gpu/drm/i830/i830_drv.c @@ -0,0 +1,108 @@ +/* i830_drv.c -- I810 driver -*- linux-c -*- + * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * 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, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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. + * + * Authors: + * Rickard E. (Rik) Faith <faith@valinux.com> + * Jeff Hartmann <jhartmann@valinux.com> + * Gareth Hughes <gareth@valinux.com> + * Abraham vd Merwe <abraham@2d3d.co.za> + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "drmP.h" +#include "drm.h" +#include "i830_drm.h" +#include "i830_drv.h" + +#include "drm_pciids.h" + +static struct pci_device_id pciidlist[] = { + i830_PCI_IDS +}; + +static struct drm_driver driver = { + .driver_features = + DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR | + DRIVER_HAVE_DMA | DRIVER_DMA_QUEUE, +#if USE_IRQS + .driver_features |= DRIVER_HAVE_IRQ | DRIVER_SHARED_IRQ, +#endif + .dev_priv_size = sizeof(drm_i830_buf_priv_t), + .load = i830_driver_load, + .lastclose = i830_driver_lastclose, + .preclose = i830_driver_preclose, + .device_is_agp = i830_driver_device_is_agp, + .reclaim_buffers_locked = i830_driver_reclaim_buffers_locked, + .dma_quiescent = i830_driver_dma_quiescent, + .get_map_ofs = drm_core_get_map_ofs, + .get_reg_ofs = drm_core_get_reg_ofs, +#if USE_IRQS + .irq_preinstall = i830_driver_irq_preinstall, + .irq_postinstall = i830_driver_irq_postinstall, + .irq_uninstall = i830_driver_irq_uninstall, + .irq_handler = i830_driver_irq_handler, +#endif + .ioctls = i830_ioctls, + .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 i830_init(void) +{ + driver.num_ioctls = i830_max_ioctl; + return drm_init(&driver); +} + +static void __exit i830_exit(void) +{ + drm_exit(&driver); +} + +module_init(i830_init); +module_exit(i830_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL and additional rights"); diff --git a/drivers/gpu/drm/i830/i830_drv.h b/drivers/gpu/drm/i830/i830_drv.h new file mode 100644 index 0000000..b5bf8cc --- /dev/null +++ b/drivers/gpu/drm/i830/i830_drv.h @@ -0,0 +1,292 @@ +/* i830_drv.h -- Private header for the I830 driver -*- linux-c -*- + * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * 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, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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. + * + * Authors: Rickard E. (Rik) Faith <faith@valinux.com> + * Jeff Hartmann <jhartmann@valinux.com> + * + */ + +#ifndef _I830_DRV_H_ +#define _I830_DRV_H_ + +/* General customization: + */ + +#define DRIVER_AUTHOR "VA Linux Systems Inc." + +#define DRIVER_NAME "i830" +#define DRIVER_DESC "Intel 830M" +#define DRIVER_DATE "20021108" + +/* Interface history: + * + * 1.1: Original. + * 1.2: ? + * 1.3: New irq emit/wait ioctls. + * New pageflip ioctl. + * New getparam ioctl. + * State for texunits 3&4 in sarea. + * New (alternative) layout for texture state. + */ +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 3 +#define DRIVER_PATCHLEVEL 2 + +/* Driver will work either way: IRQ's save cpu time when waiting for + * the card, but are subject to subtle interactions between bios, + * hardware and the driver. + */ +/* XXX: Add vblank support? */ +#define USE_IRQS 0 + +typedef struct drm_i830_buf_priv { + u32 *in_use; + int my_use_idx; + int currently_mapped; + void __user *virtual; + void *kernel_virtual; + drm_local_map_t map; +} drm_i830_buf_priv_t; + +typedef struct _drm_i830_ring_buffer { + int tail_mask; + unsigned long Start; + unsigned long End; + unsigned long Size; + u8 *virtual_start; + int head; + int tail; + int space; + drm_local_map_t map; +} drm_i830_ring_buffer_t; + +typedef struct drm_i830_private { + struct drm_map *sarea_map; + struct drm_map *mmio_map; + + drm_i830_sarea_t *sarea_priv; + drm_i830_ring_buffer_t ring; + + void *hw_status_page; + unsigned long counter; + + dma_addr_t dma_status_page; + + struct drm_buf *mmap_buffer; + + u32 front_di1, back_di1, zi1; + + int back_offset; + int depth_offset; + int front_offset; + int w, h; + int pitch; + int back_pitch; + int depth_pitch; + unsigned int cpp; + + int do_boxes; + int dma_used; + + int current_page; + int page_flipping; + + wait_queue_head_t irq_queue; + atomic_t irq_received; + atomic_t irq_emitted; + + int use_mi_batchbuffer_start; + +} drm_i830_private_t; + +extern struct drm_ioctl_desc i830_ioctls[]; +extern int i830_max_ioctl; + +/* i830_irq.c */ +extern int i830_irq_emit(struct drm_device *dev, void *data, + struct drm_file *file_priv); +extern int i830_irq_wait(struct drm_device *dev, void *data, + struct drm_file *file_priv); + +extern irqreturn_t i830_driver_irq_handler(DRM_IRQ_ARGS); +extern void i830_driver_irq_preinstall(struct drm_device * dev); +extern void i830_driver_irq_postinstall(struct drm_device * dev); +extern void i830_driver_irq_uninstall(struct drm_device * dev); +extern int i830_driver_load(struct drm_device *, unsigned long flags); +extern void i830_driver_preclose(struct drm_device * dev, + struct drm_file *file_priv); +extern void i830_driver_lastclose(struct drm_device * dev); +extern void i830_driver_reclaim_buffers_locked(struct drm_device * dev, + struct drm_file *file_priv); +extern int i830_driver_dma_quiescent(struct drm_device * dev); +extern int i830_driver_device_is_agp(struct drm_device * dev); + +#define I830_READ(reg) DRM_READ32(dev_priv->mmio_map, reg) +#define I830_WRITE(reg,val) DRM_WRITE32(dev_priv->mmio_map, reg, val) +#define I830_READ16(reg) DRM_READ16(dev_priv->mmio_map, reg) +#define I830_WRITE16(reg,val) DRM_WRITE16(dev_priv->mmio_map, reg, val) + +#define I830_VERBOSE 0 + +#define RING_LOCALS unsigned int outring, ringmask, outcount; \ + volatile char *virt; + +#define BEGIN_LP_RING(n) do { \ + if (I830_VERBOSE) \ + printk("BEGIN_LP_RING(%d)\n", (n)); \ + if (dev_priv->ring.space < n*4) \ + i830_wait_ring(dev, n*4, __func__); \ + outcount = 0; \ + outring = dev_priv->ring.tail; \ + ringmask = dev_priv->ring.tail_mask; \ + virt = dev_priv->ring.virtual_start; \ +} while (0) + +#define OUT_RING(n) do { \ + if (I830_VERBOSE) printk(" OUT_RING %x\n", (int)(n)); \ + *(volatile unsigned int *)(virt + outring) = n; \ + outcount++; \ + outring += 4; \ + outring &= ringmask; \ +} while (0) + +#define ADVANCE_LP_RING() do { \ + if (I830_VERBOSE) printk("ADVANCE_LP_RING %x\n", outring); \ + dev_priv->ring.tail = outring; \ + dev_priv->ring.space -= outcount * 4; \ + I830_WRITE(LP_RING + RING_TAIL, outring); \ +} while(0) + +extern int i830_wait_ring(struct drm_device * dev, int n, const char *caller); + +#define GFX_OP_USER_INTERRUPT ((0<<29)|(2<<23)) +#define GFX_OP_BREAKPOINT_INTERRUPT ((0<<29)|(1<<23)) +#define CMD_REPORT_HEAD (7<<23) +#define CMD_STORE_DWORD_IDX ((0x21<<23) | 0x1) +#define CMD_OP_BATCH_BUFFER ((0x0<<29)|(0x30<<23)|0x1) + +#define STATE3D_LOAD_STATE_IMMEDIATE_2 ((0x3<<29)|(0x1d<<24)|(0x03<<16)) +#define LOAD_TEXTURE_MAP0 (1<<11) + +#define INST_PARSER_CLIENT 0x00000000 +#define INST_OP_FLUSH 0x02000000 +#define INST_FLUSH_MAP_CACHE 0x00000001 + +#define BB1_START_ADDR_MASK (~0x7) +#define BB1_PROTECTED (1<<0) +#define BB1_UNPROTECTED (0<<0) +#define BB2_END_ADDR_MASK (~0x7) + +#define I830REG_HWSTAM 0x02098 +#define I830REG_INT_IDENTITY_R 0x020a4 +#define I830REG_INT_MASK_R 0x020a8 +#define I830REG_INT_ENABLE_R 0x020a0 + +#define I830_IRQ_RESERVED ((1<<13)|(3<<2)) + +#define LP_RING 0x2030 +#define HP_RING 0x2040 +#define RING_TAIL 0x00 +#define TAIL_ADDR 0x001FFFF8 +#define RING_HEAD 0x04 +#define HEAD_WRAP_COUNT 0xFFE00000 +#define HEAD_WRAP_ONE 0x00200000 +#define HEAD_ADDR 0x001FFFFC +#define RING_START 0x08 +#define START_ADDR 0x0xFFFFF000 +#define RING_LEN 0x0C +#define RING_NR_PAGES 0x001FF000 +#define RING_REPORT_MASK 0x00000006 +#define RING_REPORT_64K 0x00000002 +#define RING_REPORT_128K 0x00000004 +#define RING_NO_REPORT 0x00000000 +#define RING_VALID_MASK 0x00000001 +#define RING_VALID 0x00000001 +#define RING_INVALID 0x00000000 + +#define GFX_OP_SCISSOR ((0x3<<29)|(0x1c<<24)|(0x10<<19)) +#define SC_UPDATE_SCISSOR (0x1<<1) +#define SC_ENABLE_MASK (0x1<<0) +#define SC_ENABLE (0x1<<0) + +#define GFX_OP_SCISSOR_INFO ((0x3<<29)|(0x1d<<24)|(0x81<<16)|(0x1)) +#define SCI_YMIN_MASK (0xffff<<16) +#define SCI_XMIN_MASK (0xffff<<0) +#define SCI_YMAX_MASK (0xffff<<16) +#define SCI_XMAX_MASK (0xffff<<0) + +#define GFX_OP_SCISSOR_ENABLE ((0x3<<29)|(0x1c<<24)|(0x10<<19)) +#define GFX_OP_SCISSOR_RECT ((0x3<<29)|(0x1d<<24)|(0x81<<16)|1) +#define GFX_OP_COLOR_FACTOR ((0x3<<29)|(0x1d<<24)|(0x1<<16)|0x0) +#define GFX_OP_STIPPLE ((0x3<<29)|(0x1d<<24)|(0x83<<16)) +#define GFX_OP_MAP_INFO ((0x3<<29)|(0x1d<<24)|0x4) +#define GFX_OP_DESTBUFFER_VARS ((0x3<<29)|(0x1d<<24)|(0x85<<16)|0x0) +#define GFX_OP_DRAWRECT_INFO ((0x3<<29)|(0x1d<<24)|(0x80<<16)|(0x3)) +#define GFX_OP_PRIMITIVE ((0x3<<29)|(0x1f<<24)) + +#define CMD_OP_DESTBUFFER_INFO ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1) + +#define CMD_OP_DISPLAYBUFFER_INFO ((0x0<<29)|(0x14<<23)|2) +#define ASYNC_FLIP (1<<22) + +#define CMD_3D (0x3<<29) +#define STATE3D_CONST_BLEND_COLOR_CMD (CMD_3D|(0x1d<<24)|(0x88<<16)) +#define STATE3D_MAP_COORD_SETBIND_CMD (CMD_3D|(0x1d<<24)|(0x02<<16)) + +#define BR00_BITBLT_CLIENT 0x40000000 +#define BR00_OP_COLOR_BLT 0x10000000 +#define BR00_OP_SRC_COPY_BLT 0x10C00000 +#define BR13_SOLID_PATTERN 0x80000000 + +#define BUF_3D_ID_COLOR_BACK (0x3<<24) +#define BUF_3D_ID_DEPTH (0x7<<24) +#define BUF_3D_USE_FENCE (1<<23) +#define BUF_3D_PITCH(x) (((x)/4)<<2) + +#define CMD_OP_MAP_PALETTE_LOAD ((3<<29)|(0x1d<<24)|(0x82<<16)|255) +#define MAP_PALETTE_NUM(x) ((x<<8) & (1<<8)) +#define MAP_PALETTE_BOTH (1<<11) + +#define XY_COLOR_BLT_CMD ((2<<29)|(0x50<<22)|0x4) +#define XY_COLOR_BLT_WRITE_ALPHA (1<<21) +#define XY_COLOR_BLT_WRITE_RGB (1<<20) + +#define XY_SRC_COPY_BLT_CMD ((2<<29)|(0x53<<22)|6) +#define XY_SRC_COPY_BLT_WRITE_ALPHA (1<<21) +#define XY_SRC_COPY_BLT_WRITE_RGB (1<<20) + +#define MI_BATCH_BUFFER ((0x30<<23)|1) +#define MI_BATCH_BUFFER_START (0x31<<23) +#define MI_BATCH_BUFFER_END (0xA<<23) +#define MI_BATCH_NON_SECURE (1) + +#define MI_WAIT_FOR_EVENT ((0x3<<23)) +#define MI_WAIT_FOR_PLANE_A_FLIP (1<<2) +#define MI_WAIT_FOR_PLANE_A_SCANLINES (1<<1) + +#define MI_LOAD_SCAN_LINES_INCL ((0x12<<23)) + +#endif diff --git a/drivers/gpu/drm/i830/i830_irq.c b/drivers/gpu/drm/i830/i830_irq.c new file mode 100644 index 0000000..91ec2bb --- /dev/null +++ b/drivers/gpu/drm/i830/i830_irq.c @@ -0,0 +1,186 @@ +/* i830_dma.c -- DMA support for the I830 -*- linux-c -*- + * + * Copyright 2002 Tungsten Graphics, Inc. + * 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, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. + * + * Authors: Keith Whitwell <keith@tungstengraphics.com> + * + */ + +#include "drmP.h" +#include "drm.h" +#include "i830_drm.h" +#include "i830_drv.h" +#include <linux/interrupt.h> /* For task queue support */ +#include <linux/delay.h> + +irqreturn_t i830_driver_irq_handler(DRM_IRQ_ARGS) +{ + struct drm_device *dev = (struct drm_device *) arg; + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + u16 temp; + + temp = I830_READ16(I830REG_INT_IDENTITY_R); + DRM_DEBUG("%x\n", temp); + + if (!(temp & 2)) + return IRQ_NONE; + + I830_WRITE16(I830REG_INT_IDENTITY_R, temp); + + atomic_inc(&dev_priv->irq_received); + wake_up_interruptible(&dev_priv->irq_queue); + + return IRQ_HANDLED; +} + +static int i830_emit_irq(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + DRM_DEBUG("%s\n", __func__); + + atomic_inc(&dev_priv->irq_emitted); + + BEGIN_LP_RING(2); + OUT_RING(0); + OUT_RING(GFX_OP_USER_INTERRUPT); + ADVANCE_LP_RING(); + + return atomic_read(&dev_priv->irq_emitted); +} + +static int i830_wait_irq(struct drm_device * dev, int irq_nr) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + DECLARE_WAITQUEUE(entry, current); + unsigned long end = jiffies + HZ * 3; + int ret = 0; + + DRM_DEBUG("%s\n", __func__); + + if (atomic_read(&dev_priv->irq_received) >= irq_nr) + return 0; + + dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT; + + add_wait_queue(&dev_priv->irq_queue, &entry); + + for (;;) { + __set_current_state(TASK_INTERRUPTIBLE); + if (atomic_read(&dev_priv->irq_received) >= irq_nr) + break; + if ((signed)(end - jiffies) <= 0) { + DRM_ERROR("timeout iir %x imr %x ier %x hwstam %x\n", + I830_READ16(I830REG_INT_IDENTITY_R), + I830_READ16(I830REG_INT_MASK_R), + I830_READ16(I830REG_INT_ENABLE_R), + I830_READ16(I830REG_HWSTAM)); + + ret = -EBUSY; /* Lockup? Missed irq? */ + break; + } + schedule_timeout(HZ * 3); + if (signal_pending(current)) { + ret = -EINTR; + break; + } + } + + __set_current_state(TASK_RUNNING); + remove_wait_queue(&dev_priv->irq_queue, &entry); + return ret; +} + +/* Needs the lock as it touches the ring. + */ +int i830_irq_emit(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_irq_emit_t *emit = data; + int result; + + LOCK_TEST_WITH_RETURN(dev, file_priv); + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __func__); + return -EINVAL; + } + + result = i830_emit_irq(dev); + + if (copy_to_user(emit->irq_seq, &result, sizeof(int))) { + DRM_ERROR("copy_to_user\n"); + return -EFAULT; + } + + return 0; +} + +/* Doesn't need the hardware lock. + */ +int i830_irq_wait(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i830_private_t *dev_priv = dev->dev_private; + drm_i830_irq_wait_t *irqwait = data; + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __func__); + return -EINVAL; + } + + return i830_wait_irq(dev, irqwait->irq_seq); +} + +/* drm_dma.h hooks +*/ +void i830_driver_irq_preinstall(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + + I830_WRITE16(I830REG_HWSTAM, 0xffff); + I830_WRITE16(I830REG_INT_MASK_R, 0x0); + I830_WRITE16(I830REG_INT_ENABLE_R, 0x0); + atomic_set(&dev_priv->irq_received, 0); + atomic_set(&dev_priv->irq_emitted, 0); + init_waitqueue_head(&dev_priv->irq_queue); +} + +void i830_driver_irq_postinstall(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + + I830_WRITE16(I830REG_INT_ENABLE_R, 0x2); +} + +void i830_driver_irq_uninstall(struct drm_device * dev) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + if (!dev_priv) + return; + + I830_WRITE16(I830REG_INT_MASK_R, 0xffff); + I830_WRITE16(I830REG_INT_ENABLE_R, 0x0); +} |
