230 lines
7.6 KiB
C
230 lines
7.6 KiB
C
/*
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* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
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* Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sub license,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _VIA_DRV_H_
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#define _VIA_DRV_H_
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#include <linux/irqreturn.h>
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#include <linux/jiffies.h>
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#include <linux/sched.h>
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#include <linux/sched/signal.h>
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#include <linux/wait.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_legacy.h>
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#include <drm/drm_mm.h>
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#include <drm/via_drm.h>
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#define DRIVER_AUTHOR "Various"
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#define DRIVER_NAME "via"
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#define DRIVER_DESC "VIA Unichrome / Pro"
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#define DRIVER_DATE "20070202"
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#define DRIVER_MAJOR 2
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#define DRIVER_MINOR 11
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#define DRIVER_PATCHLEVEL 1
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#include "via_verifier.h"
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#include "via_dmablit.h"
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#define VIA_PCI_BUF_SIZE 60000
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#define VIA_FIRE_BUF_SIZE 1024
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#define VIA_NUM_IRQS 4
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typedef struct drm_via_ring_buffer {
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drm_local_map_t map;
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char *virtual_start;
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} drm_via_ring_buffer_t;
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typedef uint32_t maskarray_t[5];
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typedef struct drm_via_irq {
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atomic_t irq_received;
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uint32_t pending_mask;
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uint32_t enable_mask;
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wait_queue_head_t irq_queue;
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} drm_via_irq_t;
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typedef struct drm_via_private {
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drm_via_sarea_t *sarea_priv;
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drm_local_map_t *sarea;
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drm_local_map_t *fb;
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drm_local_map_t *mmio;
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unsigned long agpAddr;
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wait_queue_head_t decoder_queue[VIA_NR_XVMC_LOCKS];
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char *dma_ptr;
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unsigned int dma_low;
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unsigned int dma_high;
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unsigned int dma_offset;
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uint32_t dma_wrap;
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volatile uint32_t *last_pause_ptr;
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volatile uint32_t *hw_addr_ptr;
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drm_via_ring_buffer_t ring;
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ktime_t last_vblank;
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int last_vblank_valid;
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ktime_t nsec_per_vblank;
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atomic_t vbl_received;
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drm_via_state_t hc_state;
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char pci_buf[VIA_PCI_BUF_SIZE];
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const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
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uint32_t num_fire_offsets;
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int chipset;
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drm_via_irq_t via_irqs[VIA_NUM_IRQS];
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unsigned num_irqs;
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maskarray_t *irq_masks;
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uint32_t irq_enable_mask;
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uint32_t irq_pending_mask;
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int *irq_map;
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unsigned int idle_fault;
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int vram_initialized;
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struct drm_mm vram_mm;
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int agp_initialized;
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struct drm_mm agp_mm;
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/** Mapping of userspace keys to mm objects */
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struct idr object_idr;
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unsigned long vram_offset;
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unsigned long agp_offset;
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drm_via_blitq_t blit_queues[VIA_NUM_BLIT_ENGINES];
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uint32_t dma_diff;
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} drm_via_private_t;
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struct via_file_private {
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struct list_head obj_list;
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};
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enum via_family {
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VIA_OTHER = 0, /* Baseline */
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VIA_PRO_GROUP_A, /* Another video engine and DMA commands */
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VIA_DX9_0 /* Same video as pro_group_a, but 3D is unsupported */
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};
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/* VIA MMIO register access */
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static inline u32 via_read(struct drm_via_private *dev_priv, u32 reg)
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{
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return readl((void __iomem *)(dev_priv->mmio->handle + reg));
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}
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static inline void via_write(struct drm_via_private *dev_priv, u32 reg,
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u32 val)
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{
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writel(val, (void __iomem *)(dev_priv->mmio->handle + reg));
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}
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static inline void via_write8(struct drm_via_private *dev_priv, u32 reg,
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u32 val)
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{
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writeb(val, (void __iomem *)(dev_priv->mmio->handle + reg));
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}
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static inline void via_write8_mask(struct drm_via_private *dev_priv,
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u32 reg, u32 mask, u32 val)
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{
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u32 tmp;
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tmp = readb((void __iomem *)(dev_priv->mmio->handle + reg));
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tmp = (tmp & ~mask) | (val & mask);
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writeb(tmp, (void __iomem *)(dev_priv->mmio->handle + reg));
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}
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/*
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* Poll in a loop waiting for 'contidition' to be true.
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* Note: A direct replacement with wait_event_interruptible_timeout()
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* will not work unless driver is updated to emit wake_up()
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* in relevant places that can impact the 'condition'
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*
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* Returns:
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* ret keeps current value if 'condition' becomes true
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* ret = -BUSY if timeout happens
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* ret = -EINTR if a signal interrupted the waiting period
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*/
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#define VIA_WAIT_ON( ret, queue, timeout, condition ) \
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do { \
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DECLARE_WAITQUEUE(entry, current); \
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unsigned long end = jiffies + (timeout); \
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add_wait_queue(&(queue), &entry); \
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\
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for (;;) { \
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__set_current_state(TASK_INTERRUPTIBLE); \
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if (condition) \
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break; \
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if (time_after_eq(jiffies, end)) { \
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ret = -EBUSY; \
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break; \
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} \
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schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \
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if (signal_pending(current)) { \
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ret = -EINTR; \
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break; \
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} \
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} \
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__set_current_state(TASK_RUNNING); \
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remove_wait_queue(&(queue), &entry); \
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} while (0)
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extern const struct drm_ioctl_desc via_ioctls[];
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extern int via_max_ioctl;
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extern int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_decoder_futex(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_dma_blit_sync(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_dma_blit(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int via_driver_load(struct drm_device *dev, unsigned long chipset);
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extern void via_driver_unload(struct drm_device *dev);
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extern int via_init_context(struct drm_device *dev, int context);
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extern int via_final_context(struct drm_device *dev, int context);
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extern int via_do_cleanup_map(struct drm_device *dev);
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extern u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
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extern int via_enable_vblank(struct drm_device *dev, unsigned int pipe);
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extern void via_disable_vblank(struct drm_device *dev, unsigned int pipe);
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extern irqreturn_t via_driver_irq_handler(int irq, void *arg);
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extern void via_driver_irq_preinstall(struct drm_device *dev);
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extern int via_driver_irq_postinstall(struct drm_device *dev);
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extern void via_driver_irq_uninstall(struct drm_device *dev);
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extern int via_dma_cleanup(struct drm_device *dev);
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extern void via_init_command_verifier(void);
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extern int via_driver_dma_quiescent(struct drm_device *dev);
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extern void via_init_futex(drm_via_private_t *dev_priv);
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extern void via_cleanup_futex(drm_via_private_t *dev_priv);
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extern void via_release_futex(drm_via_private_t *dev_priv, int context);
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extern void via_reclaim_buffers_locked(struct drm_device *dev,
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struct drm_file *file_priv);
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extern void via_lastclose(struct drm_device *dev);
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extern void via_dmablit_handler(struct drm_device *dev, int engine, int from_irq);
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extern void via_init_dmablit(struct drm_device *dev);
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#endif
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