diff options
Diffstat (limited to 'drivers/gpu/drm/via/via_drv.h')
| -rw-r--r-- | drivers/gpu/drm/via/via_drv.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h new file mode 100644 index 000000000..d5ad1b05b --- /dev/null +++ b/drivers/gpu/drm/via/via_drv.h @@ -0,0 +1,229 @@ +/* + * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved. + * Copyright 2001-2003 S3 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, 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 + * VIA, S3 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. + */ +#ifndef _VIA_DRV_H_ +#define _VIA_DRV_H_ + +#include <linux/irqreturn.h> +#include <linux/jiffies.h> +#include <linux/sched.h> +#include <linux/sched/signal.h> +#include <linux/wait.h> + +#include <drm/drm_ioctl.h> +#include <drm/drm_legacy.h> +#include <drm/drm_mm.h> +#include <drm/via_drm.h> + +#define DRIVER_AUTHOR "Various" + +#define DRIVER_NAME "via" +#define DRIVER_DESC "VIA Unichrome / Pro" +#define DRIVER_DATE "20070202" + +#define DRIVER_MAJOR 2 +#define DRIVER_MINOR 11 +#define DRIVER_PATCHLEVEL 1 + +#include "via_verifier.h" + +#include "via_dmablit.h" + +#define VIA_PCI_BUF_SIZE 60000 +#define VIA_FIRE_BUF_SIZE 1024 +#define VIA_NUM_IRQS 4 + +typedef struct drm_via_ring_buffer { + drm_local_map_t map; + char *virtual_start; +} drm_via_ring_buffer_t; + +typedef uint32_t maskarray_t[5]; + +typedef struct drm_via_irq { + atomic_t irq_received; + uint32_t pending_mask; + uint32_t enable_mask; + wait_queue_head_t irq_queue; +} drm_via_irq_t; + +typedef struct drm_via_private { + drm_via_sarea_t *sarea_priv; + drm_local_map_t *sarea; + drm_local_map_t *fb; + drm_local_map_t *mmio; + unsigned long agpAddr; + wait_queue_head_t decoder_queue[VIA_NR_XVMC_LOCKS]; + char *dma_ptr; + unsigned int dma_low; + unsigned int dma_high; + unsigned int dma_offset; + uint32_t dma_wrap; + volatile uint32_t *last_pause_ptr; + volatile uint32_t *hw_addr_ptr; + drm_via_ring_buffer_t ring; + ktime_t last_vblank; + int last_vblank_valid; + ktime_t nsec_per_vblank; + atomic_t vbl_received; + drm_via_state_t hc_state; + char pci_buf[VIA_PCI_BUF_SIZE]; + const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE]; + uint32_t num_fire_offsets; + int chipset; + drm_via_irq_t via_irqs[VIA_NUM_IRQS]; + unsigned num_irqs; + maskarray_t *irq_masks; + uint32_t irq_enable_mask; + uint32_t irq_pending_mask; + int *irq_map; + unsigned int idle_fault; + int vram_initialized; + struct drm_mm vram_mm; + int agp_initialized; + struct drm_mm agp_mm; + /** Mapping of userspace keys to mm objects */ + struct idr object_idr; + unsigned long vram_offset; + unsigned long agp_offset; + drm_via_blitq_t blit_queues[VIA_NUM_BLIT_ENGINES]; + uint32_t dma_diff; +} drm_via_private_t; + +struct via_file_private { + struct list_head obj_list; +}; + +enum via_family { + VIA_OTHER = 0, /* Baseline */ + VIA_PRO_GROUP_A, /* Another video engine and DMA commands */ + VIA_DX9_0 /* Same video as pro_group_a, but 3D is unsupported */ +}; + +/* VIA MMIO register access */ +static inline u32 via_read(struct drm_via_private *dev_priv, u32 reg) +{ + return readl((void __iomem *)(dev_priv->mmio->handle + reg)); +} + +static inline void via_write(struct drm_via_private *dev_priv, u32 reg, + u32 val) +{ + writel(val, (void __iomem *)(dev_priv->mmio->handle + reg)); +} + +static inline void via_write8(struct drm_via_private *dev_priv, u32 reg, + u32 val) +{ + writeb(val, (void __iomem *)(dev_priv->mmio->handle + reg)); +} + +static inline void via_write8_mask(struct drm_via_private *dev_priv, + u32 reg, u32 mask, u32 val) +{ + u32 tmp; + + tmp = readb((void __iomem *)(dev_priv->mmio->handle + reg)); + tmp = (tmp & ~mask) | (val & mask); + writeb(tmp, (void __iomem *)(dev_priv->mmio->handle + reg)); +} + +/* + * Poll in a loop waiting for 'contidition' to be true. + * Note: A direct replacement with wait_event_interruptible_timeout() + * will not work unless driver is updated to emit wake_up() + * in relevant places that can impact the 'condition' + * + * Returns: + * ret keeps current value if 'condition' becomes true + * ret = -BUSY if timeout happens + * ret = -EINTR if a signal interrupted the waiting period + */ +#define VIA_WAIT_ON( ret, queue, timeout, condition ) \ +do { \ + DECLARE_WAITQUEUE(entry, current); \ + unsigned long end = jiffies + (timeout); \ + add_wait_queue(&(queue), &entry); \ + \ + for (;;) { \ + __set_current_state(TASK_INTERRUPTIBLE); \ + if (condition) \ + break; \ + if (time_after_eq(jiffies, end)) { \ + ret = -EBUSY; \ + break; \ + } \ + schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \ + if (signal_pending(current)) { \ + ret = -EINTR; \ + break; \ + } \ + } \ + __set_current_state(TASK_RUNNING); \ + remove_wait_queue(&(queue), &entry); \ +} while (0) + +extern const struct drm_ioctl_desc via_ioctls[]; +extern int via_max_ioctl; + +extern int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_decoder_futex(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_dma_blit_sync(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int via_dma_blit(struct drm_device *dev, void *data, struct drm_file *file_priv); + +extern int via_driver_load(struct drm_device *dev, unsigned long chipset); +extern void via_driver_unload(struct drm_device *dev); + +extern int via_init_context(struct drm_device *dev, int context); +extern int via_final_context(struct drm_device *dev, int context); + +extern int via_do_cleanup_map(struct drm_device *dev); +extern u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe); +extern int via_enable_vblank(struct drm_device *dev, unsigned int pipe); +extern void via_disable_vblank(struct drm_device *dev, unsigned int pipe); + +extern irqreturn_t via_driver_irq_handler(int irq, void *arg); +extern void via_driver_irq_preinstall(struct drm_device *dev); +extern int via_driver_irq_postinstall(struct drm_device *dev); +extern void via_driver_irq_uninstall(struct drm_device *dev); + +extern int via_dma_cleanup(struct drm_device *dev); +extern void via_init_command_verifier(void); +extern int via_driver_dma_quiescent(struct drm_device *dev); +extern void via_init_futex(drm_via_private_t *dev_priv); +extern void via_cleanup_futex(drm_via_private_t *dev_priv); +extern void via_release_futex(drm_via_private_t *dev_priv, int context); + +extern void via_reclaim_buffers_locked(struct drm_device *dev, + struct drm_file *file_priv); +extern void via_lastclose(struct drm_device *dev); + +extern void via_dmablit_handler(struct drm_device *dev, int engine, int from_irq); +extern void via_init_dmablit(struct drm_device *dev); + +#endif |