diff options
Diffstat (limited to 'drivers/gpu/drm/r128/r128_cce.c')
| -rw-r--r-- | drivers/gpu/drm/r128/r128_cce.c | 944 |
1 files changed, 0 insertions, 944 deletions
diff --git a/drivers/gpu/drm/r128/r128_cce.c b/drivers/gpu/drm/r128/r128_cce.c deleted file mode 100644 index c04d84a69dd2..000000000000 --- a/drivers/gpu/drm/r128/r128_cce.c +++ /dev/null @@ -1,944 +0,0 @@ -/* r128_cce.c -- ATI Rage 128 driver -*- linux-c -*- - * Created: Wed Apr 5 19:24:19 2000 by kevin@precisioninsight.com - */ -/* - * Copyright 2000 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: - * Gareth Hughes <gareth@valinux.com> - */ - -#include <linux/delay.h> -#include <linux/dma-mapping.h> -#include <linux/firmware.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/uaccess.h> - -#include <drm/drm_device.h> -#include <drm/drm_file.h> -#include <drm/drm_legacy.h> -#include <drm/drm_print.h> -#include <drm/r128_drm.h> - -#include "r128_drv.h" - -#define R128_FIFO_DEBUG 0 - -#define FIRMWARE_NAME "r128/r128_cce.bin" - -MODULE_FIRMWARE(FIRMWARE_NAME); - -static int R128_READ_PLL(struct drm_device *dev, int addr) -{ - drm_r128_private_t *dev_priv = dev->dev_private; - - R128_WRITE8(R128_CLOCK_CNTL_INDEX, addr & 0x1f); - return R128_READ(R128_CLOCK_CNTL_DATA); -} - -#if R128_FIFO_DEBUG -static void r128_status(drm_r128_private_t *dev_priv) -{ - printk("GUI_STAT = 0x%08x\n", - (unsigned int)R128_READ(R128_GUI_STAT)); - printk("PM4_STAT = 0x%08x\n", - (unsigned int)R128_READ(R128_PM4_STAT)); - printk("PM4_BUFFER_DL_WPTR = 0x%08x\n", - (unsigned int)R128_READ(R128_PM4_BUFFER_DL_WPTR)); - printk("PM4_BUFFER_DL_RPTR = 0x%08x\n", - (unsigned int)R128_READ(R128_PM4_BUFFER_DL_RPTR)); - printk("PM4_MICRO_CNTL = 0x%08x\n", - (unsigned int)R128_READ(R128_PM4_MICRO_CNTL)); - printk("PM4_BUFFER_CNTL = 0x%08x\n", - (unsigned int)R128_READ(R128_PM4_BUFFER_CNTL)); -} -#endif - -/* ================================================================ - * Engine, FIFO control - */ - -static int r128_do_pixcache_flush(drm_r128_private_t *dev_priv) -{ - u32 tmp; - int i; - - tmp = R128_READ(R128_PC_NGUI_CTLSTAT) | R128_PC_FLUSH_ALL; - R128_WRITE(R128_PC_NGUI_CTLSTAT, tmp); - - for (i = 0; i < dev_priv->usec_timeout; i++) { - if (!(R128_READ(R128_PC_NGUI_CTLSTAT) & R128_PC_BUSY)) - return 0; - udelay(1); - } - -#if R128_FIFO_DEBUG - DRM_ERROR("failed!\n"); -#endif - return -EBUSY; -} - -static int r128_do_wait_for_fifo(drm_r128_private_t *dev_priv, int entries) -{ - int i; - - for (i = 0; i < dev_priv->usec_timeout; i++) { - int slots = R128_READ(R128_GUI_STAT) & R128_GUI_FIFOCNT_MASK; - if (slots >= entries) - return 0; - udelay(1); - } - -#if R128_FIFO_DEBUG - DRM_ERROR("failed!\n"); -#endif - return -EBUSY; -} - -static int r128_do_wait_for_idle(drm_r128_private_t *dev_priv) -{ - int i, ret; - - ret = r128_do_wait_for_fifo(dev_priv, 64); - if (ret) - return ret; - - for (i = 0; i < dev_priv->usec_timeout; i++) { - if (!(R128_READ(R128_GUI_STAT) & R128_GUI_ACTIVE)) { - r128_do_pixcache_flush(dev_priv); - return 0; - } - udelay(1); - } - -#if R128_FIFO_DEBUG - DRM_ERROR("failed!\n"); -#endif - return -EBUSY; -} - -/* ================================================================ - * CCE control, initialization - */ - -/* Load the microcode for the CCE */ -static int r128_cce_load_microcode(drm_r128_private_t *dev_priv) -{ - struct platform_device *pdev; - const struct firmware *fw; - const __be32 *fw_data; - int rc, i; - - DRM_DEBUG("\n"); - - pdev = platform_device_register_simple("r128_cce", 0, NULL, 0); - if (IS_ERR(pdev)) { - pr_err("r128_cce: Failed to register firmware\n"); - return PTR_ERR(pdev); - } - rc = request_firmware(&fw, FIRMWARE_NAME, &pdev->dev); - platform_device_unregister(pdev); - if (rc) { - pr_err("r128_cce: Failed to load firmware \"%s\"\n", - FIRMWARE_NAME); - return rc; - } - - if (fw->size != 256 * 8) { - pr_err("r128_cce: Bogus length %zu in firmware \"%s\"\n", - fw->size, FIRMWARE_NAME); - rc = -EINVAL; - goto out_release; - } - - r128_do_wait_for_idle(dev_priv); - - fw_data = (const __be32 *)fw->data; - R128_WRITE(R128_PM4_MICROCODE_ADDR, 0); - for (i = 0; i < 256; i++) { - R128_WRITE(R128_PM4_MICROCODE_DATAH, - be32_to_cpup(&fw_data[i * 2])); - R128_WRITE(R128_PM4_MICROCODE_DATAL, - be32_to_cpup(&fw_data[i * 2 + 1])); - } - -out_release: - release_firmware(fw); - return rc; -} - -/* Flush any pending commands to the CCE. This should only be used just - * prior to a wait for idle, as it informs the engine that the command - * stream is ending. - */ -static void r128_do_cce_flush(drm_r128_private_t *dev_priv) -{ - u32 tmp; - - tmp = R128_READ(R128_PM4_BUFFER_DL_WPTR) | R128_PM4_BUFFER_DL_DONE; - R128_WRITE(R128_PM4_BUFFER_DL_WPTR, tmp); -} - -/* Wait for the CCE to go idle. - */ -int r128_do_cce_idle(drm_r128_private_t *dev_priv) -{ - int i; - - for (i = 0; i < dev_priv->usec_timeout; i++) { - if (GET_RING_HEAD(dev_priv) == dev_priv->ring.tail) { - int pm4stat = R128_READ(R128_PM4_STAT); - if (((pm4stat & R128_PM4_FIFOCNT_MASK) >= - dev_priv->cce_fifo_size) && - !(pm4stat & (R128_PM4_BUSY | - R128_PM4_GUI_ACTIVE))) { - return r128_do_pixcache_flush(dev_priv); - } - } - udelay(1); - } - -#if R128_FIFO_DEBUG - DRM_ERROR("failed!\n"); - r128_status(dev_priv); -#endif - return -EBUSY; -} - -/* Start the Concurrent Command Engine. - */ -static void r128_do_cce_start(drm_r128_private_t *dev_priv) -{ - r128_do_wait_for_idle(dev_priv); - - R128_WRITE(R128_PM4_BUFFER_CNTL, - dev_priv->cce_mode | dev_priv->ring.size_l2qw - | R128_PM4_BUFFER_CNTL_NOUPDATE); - R128_READ(R128_PM4_BUFFER_ADDR); /* as per the sample code */ - R128_WRITE(R128_PM4_MICRO_CNTL, R128_PM4_MICRO_FREERUN); - - dev_priv->cce_running = 1; -} - -/* Reset the Concurrent Command Engine. This will not flush any pending - * commands, so you must wait for the CCE command stream to complete - * before calling this routine. - */ -static void r128_do_cce_reset(drm_r128_private_t *dev_priv) -{ - R128_WRITE(R128_PM4_BUFFER_DL_WPTR, 0); - R128_WRITE(R128_PM4_BUFFER_DL_RPTR, 0); - dev_priv->ring.tail = 0; -} - -/* Stop the Concurrent Command Engine. This will not flush any pending - * commands, so you must flush the command stream and wait for the CCE - * to go idle before calling this routine. - */ -static void r128_do_cce_stop(drm_r128_private_t *dev_priv) -{ - R128_WRITE(R128_PM4_MICRO_CNTL, 0); - R128_WRITE(R128_PM4_BUFFER_CNTL, - R128_PM4_NONPM4 | R128_PM4_BUFFER_CNTL_NOUPDATE); - - dev_priv->cce_running = 0; -} - -/* Reset the engine. This will stop the CCE if it is running. - */ -static int r128_do_engine_reset(struct drm_device *dev) -{ - drm_r128_private_t *dev_priv = dev->dev_private; - u32 clock_cntl_index, mclk_cntl, gen_reset_cntl; - - r128_do_pixcache_flush(dev_priv); - - clock_cntl_index = R128_READ(R128_CLOCK_CNTL_INDEX); - mclk_cntl = R128_READ_PLL(dev, R128_MCLK_CNTL); - - R128_WRITE_PLL(R128_MCLK_CNTL, - mclk_cntl | R128_FORCE_GCP | R128_FORCE_PIPE3D_CP); - - gen_reset_cntl = R128_READ(R128_GEN_RESET_CNTL); - - /* Taken from the sample code - do not change */ - R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl | R128_SOFT_RESET_GUI); - R128_READ(R128_GEN_RESET_CNTL); - R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl & ~R128_SOFT_RESET_GUI); - R128_READ(R128_GEN_RESET_CNTL); - - R128_WRITE_PLL(R128_MCLK_CNTL, mclk_cntl); - R128_WRITE(R128_CLOCK_CNTL_INDEX, clock_cntl_index); - R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl); - - /* Reset the CCE ring */ - r128_do_cce_reset(dev_priv); - - /* The CCE is no longer running after an engine reset */ - dev_priv->cce_running = 0; - - /* Reset any pending vertex, indirect buffers */ - r128_freelist_reset(dev); - - return 0; -} - -static void r128_cce_init_ring_buffer(struct drm_device *dev, - drm_r128_private_t *dev_priv) -{ - u32 ring_start; - u32 tmp; - - DRM_DEBUG("\n"); - - /* The manual (p. 2) says this address is in "VM space". This - * means it's an offset from the start of AGP space. - */ -#if IS_ENABLED(CONFIG_AGP) - if (!dev_priv->is_pci) - ring_start = dev_priv->cce_ring->offset - dev->agp->base; - else -#endif - ring_start = dev_priv->cce_ring->offset - - (unsigned long)dev->sg->virtual; - - R128_WRITE(R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET); - - R128_WRITE(R128_PM4_BUFFER_DL_WPTR, 0); - R128_WRITE(R128_PM4_BUFFER_DL_RPTR, 0); - - /* Set watermark control */ - R128_WRITE(R128_PM4_BUFFER_WM_CNTL, - ((R128_WATERMARK_L / 4) << R128_WMA_SHIFT) - | ((R128_WATERMARK_M / 4) << R128_WMB_SHIFT) - | ((R128_WATERMARK_N / 4) << R128_WMC_SHIFT) - | ((R128_WATERMARK_K / 64) << R128_WB_WM_SHIFT)); - - /* Force read. Why? Because it's in the examples... */ - R128_READ(R128_PM4_BUFFER_ADDR); - - /* Turn on bus mastering */ - tmp = R128_READ(R128_BUS_CNTL) & ~R128_BUS_MASTER_DIS; - R128_WRITE(R128_BUS_CNTL, tmp); -} - -static int r128_do_init_cce(struct drm_device *dev, drm_r128_init_t *init) -{ - drm_r128_private_t *dev_priv; - int rc; - - DRM_DEBUG("\n"); - - if (dev->dev_private) { - DRM_DEBUG("called when already initialized\n"); - return -EINVAL; - } - - dev_priv = kzalloc(sizeof(drm_r128_private_t), GFP_KERNEL); - if (dev_priv == NULL) - return -ENOMEM; - - dev_priv->is_pci = init->is_pci; - - if (dev_priv->is_pci && !dev->sg) { - DRM_ERROR("PCI GART memory not allocated!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - - dev_priv->usec_timeout = init->usec_timeout; - if (dev_priv->usec_timeout < 1 || - dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT) { - DRM_DEBUG("TIMEOUT problem!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - - dev_priv->cce_mode = init->cce_mode; - - /* GH: Simple idle check. - */ - atomic_set(&dev_priv->idle_count, 0); - - /* We don't support anything other than bus-mastering ring mode, - * but the ring can be in either AGP or PCI space for the ring - * read pointer. - */ - if ((init->cce_mode != R128_PM4_192BM) && - (init->cce_mode != R128_PM4_128BM_64INDBM) && - (init->cce_mode != R128_PM4_64BM_128INDBM) && - (init->cce_mode != R128_PM4_64BM_64VCBM_64INDBM)) { - DRM_DEBUG("Bad cce_mode!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - - switch (init->cce_mode) { - case R128_PM4_NONPM4: - dev_priv->cce_fifo_size = 0; - break; - case R128_PM4_192PIO: - case R128_PM4_192BM: - dev_priv->cce_fifo_size = 192; - break; - case R128_PM4_128PIO_64INDBM: - case R128_PM4_128BM_64INDBM: - dev_priv->cce_fifo_size = 128; - break; - case R128_PM4_64PIO_128INDBM: - case R128_PM4_64BM_128INDBM: - case R128_PM4_64PIO_64VCBM_64INDBM: - case R128_PM4_64BM_64VCBM_64INDBM: - case R128_PM4_64PIO_64VCPIO_64INDPIO: - dev_priv->cce_fifo_size = 64; - break; - } - - switch (init->fb_bpp) { - case 16: - dev_priv->color_fmt = R128_DATATYPE_RGB565; - break; - case 32: - default: - dev_priv->color_fmt = R128_DATATYPE_ARGB8888; - break; - } - 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; - - switch (init->depth_bpp) { - case 16: - dev_priv->depth_fmt = R128_DATATYPE_RGB565; - break; - case 24: - case 32: - default: - dev_priv->depth_fmt = R128_DATATYPE_ARGB8888; - break; - } - dev_priv->depth_offset = init->depth_offset; - dev_priv->depth_pitch = init->depth_pitch; - dev_priv->span_offset = init->span_offset; - - dev_priv->front_pitch_offset_c = (((dev_priv->front_pitch / 8) << 21) | - (dev_priv->front_offset >> 5)); - dev_priv->back_pitch_offset_c = (((dev_priv->back_pitch / 8) << 21) | - (dev_priv->back_offset >> 5)); - dev_priv->depth_pitch_offset_c = (((dev_priv->depth_pitch / 8) << 21) | - (dev_priv->depth_offset >> 5) | - R128_DST_TILE); - dev_priv->span_pitch_offset_c = (((dev_priv->depth_pitch / 8) << 21) | - (dev_priv->span_offset >> 5)); - - dev_priv->sarea = drm_legacy_getsarea(dev); - if (!dev_priv->sarea) { - DRM_ERROR("could not find sarea!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - - dev_priv->mmio = drm_legacy_findmap(dev, init->mmio_offset); - if (!dev_priv->mmio) { - DRM_ERROR("could not find mmio region!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - dev_priv->cce_ring = drm_legacy_findmap(dev, init->ring_offset); - if (!dev_priv->cce_ring) { - DRM_ERROR("could not find cce ring region!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - dev_priv->ring_rptr = drm_legacy_findmap(dev, init->ring_rptr_offset); - if (!dev_priv->ring_rptr) { - DRM_ERROR("could not find ring read pointer!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - dev->agp_buffer_token = init->buffers_offset; - dev->agp_buffer_map = drm_legacy_findmap(dev, init->buffers_offset); - if (!dev->agp_buffer_map) { - DRM_ERROR("could not find dma buffer region!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - - if (!dev_priv->is_pci) { - dev_priv->agp_textures = - drm_legacy_findmap(dev, init->agp_textures_offset); - if (!dev_priv->agp_textures) { - DRM_ERROR("could not find agp texture region!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -EINVAL; - } - } - - dev_priv->sarea_priv = - (drm_r128_sarea_t *) ((u8 *) dev_priv->sarea->handle + - init->sarea_priv_offset); - -#if IS_ENABLED(CONFIG_AGP) - if (!dev_priv->is_pci) { - drm_legacy_ioremap_wc(dev_priv->cce_ring, dev); - drm_legacy_ioremap_wc(dev_priv->ring_rptr, dev); - drm_legacy_ioremap_wc(dev->agp_buffer_map, dev); - if (!dev_priv->cce_ring->handle || - !dev_priv->ring_rptr->handle || - !dev->agp_buffer_map->handle) { - DRM_ERROR("Could not ioremap agp regions!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return -ENOMEM; - } - } else -#endif - { - dev_priv->cce_ring->handle = - (void *)(unsigned long)dev_priv->cce_ring->offset; - dev_priv->ring_rptr->handle = - (void *)(unsigned long)dev_priv->ring_rptr->offset; - dev->agp_buffer_map->handle = - (void *)(unsigned long)dev->agp_buffer_map->offset; - } - -#if IS_ENABLED(CONFIG_AGP) - if (!dev_priv->is_pci) - dev_priv->cce_buffers_offset = dev->agp->base; - else -#endif - dev_priv->cce_buffers_offset = (unsigned long)dev->sg->virtual; - - dev_priv->ring.start = (u32 *) dev_priv->cce_ring->handle; - dev_priv->ring.end = ((u32 *) dev_priv->cce_ring->handle - + init->ring_size / sizeof(u32)); - dev_priv->ring.size = init->ring_size; - dev_priv->ring.size_l2qw = order_base_2(init->ring_size / 8); - - dev_priv->ring.tail_mask = (dev_priv->ring.size / sizeof(u32)) - 1; - - dev_priv->ring.high_mark = 128; - - dev_priv->sarea_priv->last_frame = 0; - R128_WRITE(R128_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame); - - dev_priv->sarea_priv->last_dispatch = 0; - R128_WRITE(R128_LAST_DISPATCH_REG, dev_priv->sarea_priv->last_dispatch); - -#if IS_ENABLED(CONFIG_AGP) - if (dev_priv->is_pci) { -#endif - dev_priv->gart_info.table_mask = DMA_BIT_MASK(32); - dev_priv->gart_info.gart_table_location = DRM_ATI_GART_MAIN; - dev_priv->gart_info.table_size = R128_PCIGART_TABLE_SIZE; - dev_priv->gart_info.addr = NULL; - dev_priv->gart_info.bus_addr = 0; - dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI; - rc = drm_ati_pcigart_init(dev, &dev_priv->gart_info); - if (rc) { - DRM_ERROR("failed to init PCI GART!\n"); - dev->dev_private = (void *)dev_priv; - r128_do_cleanup_cce(dev); - return rc; - } - R128_WRITE(R128_PCI_GART_PAGE, dev_priv->gart_info.bus_addr); -#if IS_ENABLED(CONFIG_AGP) - } -#endif - - r128_cce_init_ring_buffer(dev, dev_priv); - rc = r128_cce_load_microcode(dev_priv); - - dev->dev_private = (void *)dev_priv; - - r128_do_engine_reset(dev); - - if (rc) { - DRM_ERROR("Failed to load firmware!\n"); - r128_do_cleanup_cce(dev); - } - - return rc; -} - -int r128_do_cleanup_cce(struct drm_device *dev) -{ - - /* 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_legacy_irq_uninstall(dev); - - if (dev->dev_private) { - drm_r128_private_t *dev_priv = dev->dev_private; - -#if IS_ENABLED(CONFIG_AGP) - if (!dev_priv->is_pci) { - if (dev_priv->cce_ring != NULL) - drm_legacy_ioremapfree(dev_priv->cce_ring, dev); - if (dev_priv->ring_rptr != NULL) - drm_legacy_ioremapfree(dev_priv->ring_rptr, dev); - if (dev->agp_buffer_map != NULL) { - drm_legacy_ioremapfree(dev->agp_buffer_map, dev); - dev->agp_buffer_map = NULL; - } - } else -#endif - { - if (dev_priv->gart_info.bus_addr) - if (!drm_ati_pcigart_cleanup(dev, - &dev_priv->gart_info)) - DRM_ERROR - ("failed to cleanup PCI GART!\n"); - } - - kfree(dev->dev_private); - dev->dev_private = NULL; - } - - return 0; -} - -int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_r128_init_t *init = data; - - DRM_DEBUG("\n"); - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - switch (init->func) { - case R128_INIT_CCE: - return r128_do_init_cce(dev, init); - case R128_CLEANUP_CCE: - return r128_do_cleanup_cce(dev); - } - - return -EINVAL; -} - -int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_r128_private_t *dev_priv = dev->dev_private; - DRM_DEBUG("\n"); - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - DEV_INIT_TEST_WITH_RETURN(dev_priv); - - if (dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4) { - DRM_DEBUG("while CCE running\n"); - return 0; - } - - r128_do_cce_start(dev_priv); - - return 0; -} - -/* Stop the CCE. The engine must have been idled before calling this - * routine. - */ -int r128_cce_stop(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_r128_private_t *dev_priv = dev->dev_private; - drm_r128_cce_stop_t *stop = data; - int ret; - DRM_DEBUG("\n"); - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - DEV_INIT_TEST_WITH_RETURN(dev_priv); - - /* Flush any pending CCE commands. This ensures any outstanding - * commands are exectuted by the engine before we turn it off. - */ - if (stop->flush) - r128_do_cce_flush(dev_priv); - - /* If we fail to make the engine go idle, we return an error - * code so that the DRM ioctl wrapper can try again. - */ - if (stop->idle) { - ret = r128_do_cce_idle(dev_priv); - if (ret) - return ret; - } - - /* Finally, we can turn off the CCE. If the engine isn't idle, - * we will get some dropped triangles as they won't be fully - * rendered before the CCE is shut down. - */ - r128_do_cce_stop(dev_priv); - - /* Reset the engine */ - r128_do_engine_reset(dev); - - return 0; -} - -/* Just reset the CCE ring. Called as part of an X Server engine reset. - */ -int r128_cce_reset(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_r128_private_t *dev_priv = dev->dev_private; - DRM_DEBUG("\n"); - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - DEV_INIT_TEST_WITH_RETURN(dev_priv); - - r128_do_cce_reset(dev_priv); - - /* The CCE is no longer running after an engine reset */ - dev_priv->cce_running = 0; - - return 0; -} - -int r128_cce_idle(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_r128_private_t *dev_priv = dev->dev_private; - DRM_DEBUG("\n"); - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - DEV_INIT_TEST_WITH_RETURN(dev_priv); - - if (dev_priv->cce_running) - r128_do_cce_flush(dev_priv); - - return r128_do_cce_idle(dev_priv); -} - -int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - DRM_DEBUG("\n"); - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - DEV_INIT_TEST_WITH_RETURN(dev->dev_private); - - return r128_do_engine_reset(dev); -} - -int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - return -EINVAL; -} - -/* ================================================================ - * Freelist management - */ -#define R128_BUFFER_USED 0xffffffff -#define R128_BUFFER_FREE 0 - -#if 0 -static int r128_freelist_init(struct drm_device *dev) -{ - struct drm_device_dma *dma = dev->dma; - drm_r128_private_t *dev_priv = dev->dev_private; - struct drm_buf *buf; - drm_r128_buf_priv_t *buf_priv; - drm_r128_freelist_t *entry; - int i; - - dev_priv->head = kzalloc(sizeof(drm_r128_freelist_t), GFP_KERNEL); - if (dev_priv->head == NULL) - return -ENOMEM; - - dev_priv->head->age = R128_BUFFER_USED; - - for (i = 0; i < dma->buf_count; i++) { - buf = dma->buflist[i]; - buf_priv = buf->dev_private; - - entry = kmalloc(sizeof(drm_r128_freelist_t), GFP_KERNEL); - if (!entry) - return -ENOMEM; - - entry->age = R128_BUFFER_FREE; - entry->buf = buf; - entry->prev = dev_priv->head; - entry->next = dev_priv->head->next; - if (!entry->next) - dev_priv->tail = entry; - - buf_priv->discard = 0; - buf_priv->dispatched = 0; - buf_priv->list_entry = entry; - - dev_priv->head->next = entry; - - if (dev_priv->head->next) - dev_priv->head->next->prev = entry; - } - - return 0; - -} -#endif - -static struct drm_buf *r128_freelist_get(struct drm_device * dev) -{ - struct drm_device_dma *dma = dev->dma; - drm_r128_private_t *dev_priv = dev->dev_private; - drm_r128_buf_priv_t *buf_priv; - struct drm_buf *buf; - int i, t; - - /* FIXME: Optimize -- use freelist code */ - - for (i = 0; i < dma->buf_count; i++) { - buf = dma->buflist[i]; - buf_priv = buf->dev_private; - if (!buf->file_priv) - return buf; - } - - for (t = 0; t < dev_priv->usec_timeout; t++) { - u32 done_age = R128_READ(R128_LAST_DISPATCH_REG); - - for (i = 0; i < dma->buf_count; i++) { - buf = dma->buflist[i]; - buf_priv = buf->dev_private; - if (buf->pending && buf_priv->age <= done_age) { - /* The buffer has been processed, so it - * can now be used. - */ - buf->pending = 0; - return buf; - } - } - udelay(1); - } - - DRM_DEBUG("returning NULL!\n"); - return NULL; -} - -void r128_freelist_reset(struct drm_device *dev) -{ - struct drm_device_dma *dma = dev->dma; - int i; - - for (i = 0; i < dma->buf_count; i++) { - struct drm_buf *buf = dma->buflist[i]; - drm_r128_buf_priv_t *buf_priv = buf->dev_private; - buf_priv->age = 0; - } -} - -/* ================================================================ - * CCE command submission - */ - -int r128_wait_ring(drm_r128_private_t *dev_priv, int n) -{ - drm_r128_ring_buffer_t *ring = &dev_priv->ring; - int i; - - for (i = 0; i < dev_priv->usec_timeout; i++) { - r128_update_ring_snapshot(dev_priv); - if (ring->space >= n) - return 0; - udelay(1); - } - - /* FIXME: This is being ignored... */ - DRM_ERROR("failed!\n"); - return -EBUSY; -} - -static int r128_cce_get_buffers(struct drm_device *dev, - struct drm_file *file_priv, - struct drm_dma *d) -{ - int i; - struct drm_buf *buf; - - for (i = d->granted_count; i < d->request_count; i++) { - buf = r128_freelist_get(dev); - if (!buf) - return -EAGAIN; - - buf->file_priv = file_priv; - - if (copy_to_user(&d->request_indices[i], &buf->idx, - sizeof(buf->idx))) - return -EFAULT; - if (copy_to_user(&d->request_sizes[i], &buf->total, - sizeof(buf->total))) - return -EFAULT; - - d->granted_count++; - } - return 0; -} - -int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - struct drm_device_dma *dma = dev->dma; - int ret = 0; - struct drm_dma *d = data; - - 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", - task_pid_nr(current), 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", - task_pid_nr(current), d->request_count, dma->buf_count); - return -EINVAL; - } - - d->granted_count = 0; - - if (d->request_count) - ret = r128_cce_get_buffers(dev, file_priv, d); - - return ret; -} |