via_drv.h revision 1.1.1.4
1 /* $NetBSD: via_drv.h,v 1.1.1.4 2021/12/18 20:15:54 riastradh Exp $ */ 2 3 /* 4 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved. 5 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sub license, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 24 * DEALINGS IN THE SOFTWARE. 25 */ 26 #ifndef _VIA_DRV_H_ 27 #define _VIA_DRV_H_ 28 29 #include <linux/irqreturn.h> 30 #include <linux/jiffies.h> 31 #include <linux/sched.h> 32 #include <linux/sched/signal.h> 33 #include <linux/wait.h> 34 35 #include <drm/drm_ioctl.h> 36 #include <drm/drm_legacy.h> 37 #include <drm/drm_mm.h> 38 #include <drm/via_drm.h> 39 40 #define DRIVER_AUTHOR "Various" 41 42 #define DRIVER_NAME "via" 43 #define DRIVER_DESC "VIA Unichrome / Pro" 44 #define DRIVER_DATE "20070202" 45 46 #define DRIVER_MAJOR 2 47 #define DRIVER_MINOR 11 48 #define DRIVER_PATCHLEVEL 1 49 50 #include "via_verifier.h" 51 52 #include "via_dmablit.h" 53 54 #define VIA_PCI_BUF_SIZE 60000 55 #define VIA_FIRE_BUF_SIZE 1024 56 #define VIA_NUM_IRQS 4 57 58 typedef struct drm_via_ring_buffer { 59 drm_local_map_t map; 60 char *virtual_start; 61 } drm_via_ring_buffer_t; 62 63 typedef uint32_t maskarray_t[5]; 64 65 typedef struct drm_via_irq { 66 atomic_t irq_received; 67 uint32_t pending_mask; 68 uint32_t enable_mask; 69 wait_queue_head_t irq_queue; 70 } drm_via_irq_t; 71 72 typedef struct drm_via_private { 73 drm_via_sarea_t *sarea_priv; 74 drm_local_map_t *sarea; 75 drm_local_map_t *fb; 76 drm_local_map_t *mmio; 77 unsigned long agpAddr; 78 wait_queue_head_t decoder_queue[VIA_NR_XVMC_LOCKS]; 79 char *dma_ptr; 80 unsigned int dma_low; 81 unsigned int dma_high; 82 unsigned int dma_offset; 83 uint32_t dma_wrap; 84 volatile uint32_t *last_pause_ptr; 85 volatile uint32_t *hw_addr_ptr; 86 drm_via_ring_buffer_t ring; 87 ktime_t last_vblank; 88 int last_vblank_valid; 89 ktime_t nsec_per_vblank; 90 atomic_t vbl_received; 91 drm_via_state_t hc_state; 92 char pci_buf[VIA_PCI_BUF_SIZE]; 93 const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE]; 94 uint32_t num_fire_offsets; 95 int chipset; 96 drm_via_irq_t via_irqs[VIA_NUM_IRQS]; 97 unsigned num_irqs; 98 maskarray_t *irq_masks; 99 uint32_t irq_enable_mask; 100 uint32_t irq_pending_mask; 101 int *irq_map; 102 unsigned int idle_fault; 103 int vram_initialized; 104 struct drm_mm vram_mm; 105 int agp_initialized; 106 struct drm_mm agp_mm; 107 /** Mapping of userspace keys to mm objects */ 108 struct idr object_idr; 109 unsigned long vram_offset; 110 unsigned long agp_offset; 111 drm_via_blitq_t blit_queues[VIA_NUM_BLIT_ENGINES]; 112 uint32_t dma_diff; 113 } drm_via_private_t; 114 115 struct via_file_private { 116 struct list_head obj_list; 117 }; 118 119 enum via_family { 120 VIA_OTHER = 0, /* Baseline */ 121 VIA_PRO_GROUP_A, /* Another video engine and DMA commands */ 122 VIA_DX9_0 /* Same video as pro_group_a, but 3D is unsupported */ 123 }; 124 125 /* VIA MMIO register access */ 126 static inline u32 via_read(struct drm_via_private *dev_priv, u32 reg) 127 { 128 return readl((void __iomem *)(dev_priv->mmio->handle + reg)); 129 } 130 131 static inline void via_write(struct drm_via_private *dev_priv, u32 reg, 132 u32 val) 133 { 134 writel(val, (void __iomem *)(dev_priv->mmio->handle + reg)); 135 } 136 137 static inline void via_write8(struct drm_via_private *dev_priv, u32 reg, 138 u32 val) 139 { 140 writeb(val, (void __iomem *)(dev_priv->mmio->handle + reg)); 141 } 142 143 static inline void via_write8_mask(struct drm_via_private *dev_priv, 144 u32 reg, u32 mask, u32 val) 145 { 146 u32 tmp; 147 148 tmp = readb((void __iomem *)(dev_priv->mmio->handle + reg)); 149 tmp = (tmp & ~mask) | (val & mask); 150 writeb(tmp, (void __iomem *)(dev_priv->mmio->handle + reg)); 151 } 152 153 /* 154 * Poll in a loop waiting for 'contidition' to be true. 155 * Note: A direct replacement with wait_event_interruptible_timeout() 156 * will not work unless driver is updated to emit wake_up() 157 * in relevant places that can impact the 'condition' 158 * 159 * Returns: 160 * ret keeps current value if 'condition' becomes true 161 * ret = -BUSY if timeout happens 162 * ret = -EINTR if a signal interrupted the waiting period 163 */ 164 #define VIA_WAIT_ON( ret, queue, timeout, condition ) \ 165 do { \ 166 DECLARE_WAITQUEUE(entry, current); \ 167 unsigned long end = jiffies + (timeout); \ 168 add_wait_queue(&(queue), &entry); \ 169 \ 170 for (;;) { \ 171 __set_current_state(TASK_INTERRUPTIBLE); \ 172 if (condition) \ 173 break; \ 174 if (time_after_eq(jiffies, end)) { \ 175 ret = -EBUSY; \ 176 break; \ 177 } \ 178 schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \ 179 if (signal_pending(current)) { \ 180 ret = -EINTR; \ 181 break; \ 182 } \ 183 } \ 184 __set_current_state(TASK_RUNNING); \ 185 remove_wait_queue(&(queue), &entry); \ 186 } while (0) 187 188 extern const struct drm_ioctl_desc via_ioctls[]; 189 extern int via_max_ioctl; 190 191 extern int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv); 192 extern int via_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv); 193 extern int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv); 194 extern int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv); 195 extern int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv); 196 extern int via_decoder_futex(struct drm_device *dev, void *data, struct drm_file *file_priv); 197 extern int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv); 198 extern int via_dma_blit_sync(struct drm_device *dev, void *data, struct drm_file *file_priv); 199 extern int via_dma_blit(struct drm_device *dev, void *data, struct drm_file *file_priv); 200 201 extern int via_driver_load(struct drm_device *dev, unsigned long chipset); 202 extern void via_driver_unload(struct drm_device *dev); 203 204 extern int via_init_context(struct drm_device *dev, int context); 205 extern int via_final_context(struct drm_device *dev, int context); 206 207 extern int via_do_cleanup_map(struct drm_device *dev); 208 extern u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe); 209 extern int via_enable_vblank(struct drm_device *dev, unsigned int pipe); 210 extern void via_disable_vblank(struct drm_device *dev, unsigned int pipe); 211 212 extern irqreturn_t via_driver_irq_handler(int irq, void *arg); 213 extern void via_driver_irq_preinstall(struct drm_device *dev); 214 extern int via_driver_irq_postinstall(struct drm_device *dev); 215 extern void via_driver_irq_uninstall(struct drm_device *dev); 216 217 extern int via_dma_cleanup(struct drm_device *dev); 218 extern void via_init_command_verifier(void); 219 extern int via_driver_dma_quiescent(struct drm_device *dev); 220 extern void via_init_futex(drm_via_private_t *dev_priv); 221 extern void via_cleanup_futex(drm_via_private_t *dev_priv); 222 extern void via_release_futex(drm_via_private_t *dev_priv, int context); 223 224 extern void via_reclaim_buffers_locked(struct drm_device *dev, 225 struct drm_file *file_priv); 226 extern void via_lastclose(struct drm_device *dev); 227 228 extern void via_dmablit_handler(struct drm_device *dev, int engine, int from_irq); 229 extern void via_init_dmablit(struct drm_device *dev); 230 231 #endif 232
Indexes created Wed Oct 22 06:10:02 GMT 2025