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