/* fops.c -- File operations for DRM -*- c -*- * Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com * * Copyright 1999 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: * Rickard E. (Rik) Faith * Daryll Strauss * */ #define __NO_VERSION__ #include "drmP.h" #include #include drm_file_t *drm_find_file_by_proc(drm_device_t *dev, struct proc *p) { uid_t uid = p->p_cred->p_svuid; pid_t pid = p->p_pid; drm_file_t *priv; TAILQ_FOREACH(priv, &dev->files, link) if (priv->pid == pid && priv->uid == uid) return priv; return NULL; } /* drm_open is called whenever a process opens /dev/drm. */ int drm_open_helper(dev_t kdev, int flags, int fmt, struct proc *p, drm_device_t *dev) { int m = minor(kdev); drm_file_t *priv; if (flags & O_EXCL) return EBUSY; /* No exclusive opens */ dev->flags = flags; DRM_DEBUG("pid = %d, device = %p, minor = %d\n", p->p_pid, dev->device, m); priv = drm_find_file_by_proc(dev, p); if (priv) { priv->refs++; } else { priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES); memset(priv, 0, sizeof(*priv)); priv->uid = p->p_cred->p_svuid; priv->pid = p->p_pid; priv->refs = 1; priv->minor = m; priv->devXX = dev; priv->ioctl_count = 0; priv->authenticated = !suser(p); lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, p); TAILQ_INSERT_TAIL(&dev->files, priv, link); lockmgr(&dev->dev_lock, LK_RELEASE, 0, p); } kdev->si_drv1 = dev; return 0; } int drm_write(dev_t kdev, struct uio *uio, int ioflag) { struct proc *p = curproc; drm_device_t *dev = kdev->si_drv1; DRM_DEBUG("pid = %d, device = %p, open_count = %d\n", p->p_pid, dev->device, dev->open_count); return 0; } /* drm_release is called whenever a process closes /dev/drm*. */ int drm_close(dev_t kdev, int fflag, int devtype, struct proc *p) { drm_device_t *dev = kdev->si_drv1; drm_file_t *priv; DRM_DEBUG("pid = %d, device = %p, open_count = %d\n", p->p_pid, dev->device, dev->open_count); priv = drm_find_file_by_proc(dev, p); if (!priv) { DRM_DEBUG("can't find authenticator\n"); return EINVAL; } if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && dev->lock.pid == p->p_pid) { DRM_ERROR("Process %d dead, freeing lock for context %d\n", p->p_pid, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); drm_lock_free(dev, &dev->lock.hw_lock->lock, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); /* FIXME: may require heavy-handed reset of hardware at this point, possibly processed via a callback to the X server. */ } drm_reclaim_buffers(dev, priv->pid); funsetown(dev->buf_sigio); lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, p); priv = drm_find_file_by_proc(dev, p); if (priv) { priv->refs--; if (!priv->refs) { TAILQ_REMOVE(&dev->files, priv, link); drm_free(priv, sizeof(*priv), DRM_MEM_FILES); } } lockmgr(&dev->dev_lock, LK_RELEASE, 0, p); return 0; } /* The drm_read and drm_write_string code (especially that which manages the circular buffer), is based on Alessandro Rubini's LINUX DEVICE DRIVERS (Cambridge: O'Reilly, 1998), pages 111-113. */ ssize_t drm_read(dev_t kdev, struct uio *uio, int ioflag) { drm_device_t *dev = kdev->si_drv1; int left; int avail; int send; int cur; int error = 0; DRM_DEBUG("%p, %p\n", dev->buf_rp, dev->buf_wp); while (dev->buf_rp == dev->buf_wp) { DRM_DEBUG(" sleeping\n"); if (dev->flags & FASYNC) { return EWOULDBLOCK; } error = tsleep(&dev->buf_rp, PZERO|PCATCH, "drmrd", 0); if (error) { DRM_DEBUG(" interrupted\n"); return error; } DRM_DEBUG(" awake\n"); } left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ; avail = DRM_BSZ - left; send = DRM_MIN(avail, uio->uio_resid); while (send) { if (dev->buf_wp > dev->buf_rp) { cur = DRM_MIN(send, dev->buf_wp - dev->buf_rp); } else { cur = DRM_MIN(send, dev->buf_end - dev->buf_rp); } error = uiomove(dev->buf_rp, cur, uio); if (error) break; dev->buf_rp += cur; if (dev->buf_rp == dev->buf_end) dev->buf_rp = dev->buf; send -= cur; } wakeup(&dev->buf_wp); return error; } int drm_write_string(drm_device_t *dev, const char *s) { int left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ; int send = strlen(s); int count; DRM_DEBUG("%d left, %d to send (%p, %p)\n", left, send, dev->buf_rp, dev->buf_wp); if (left == 1 || dev->buf_wp != dev->buf_rp) { DRM_ERROR("Buffer not empty (%d left, wp = %p, rp = %p)\n", left, dev->buf_wp, dev->buf_rp); } while (send) { if (dev->buf_wp >= dev->buf_rp) { count = DRM_MIN(send, dev->buf_end - dev->buf_wp); if (count == left) --count; /* Leave a hole */ } else { count = DRM_MIN(send, dev->buf_rp - dev->buf_wp - 1); } strncpy(dev->buf_wp, s, count); dev->buf_wp += count; if (dev->buf_wp == dev->buf_end) dev->buf_wp = dev->buf; send -= count; } if (dev->buf_selecting) { dev->buf_selecting = 0; selwakeup(&dev->buf_sel); } DRM_DEBUG("dev->buf_sigio=%p\n", dev->buf_sigio); if (dev->buf_sigio) { DRM_DEBUG("dev->buf_sigio->sio_pgid=%d\n", dev->buf_sigio->sio_pgid); pgsigio(dev->buf_sigio, SIGIO, 0); } DRM_DEBUG("waking\n"); wakeup(&dev->buf_rp); return 0; } int drm_poll(dev_t kdev, int events, struct proc *p) { drm_device_t *dev = kdev->si_drv1; int s; int revents = 0; s = spldrm(); if (events & (POLLIN | POLLRDNORM)) { int left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ; if (left > 0) revents |= events & (POLLIN | POLLRDNORM); else selrecord(p, &dev->buf_sel); } splx(s); return revents; } '#n135'>135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 
/*
 * 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 "drm_sman.h"
#define DRIVER_AUTHOR	"Various"

#define DRIVER_NAME		"via"
#define DRIVER_DESC		"VIA Unichrome / Pro"

#include "via_verifier.h"

/*
 * Registers go here.
 */


#define CMDBUF_ALIGNMENT_SIZE   (0x100)
#define CMDBUF_ALIGNMENT_MASK   (0x0ff)

/* defines for VIA 3D registers */
#define VIA_REG_STATUS	        0x400
#define VIA_REG_TRANSET	        0x43C
#define VIA_REG_TRANSPACE       0x440

/* VIA_REG_STATUS(0x400): Engine Status */
#define VIA_CMD_RGTR_BUSY       0x00000080	/* Command Regulator is busy */
#define VIA_2D_ENG_BUSY	        0x00000001	/* 2D Engine is busy */
#define VIA_3D_ENG_BUSY	        0x00000002	/* 3D Engine is busy */
#define VIA_VR_QUEUE_BUSY       0x00020000	/* Virtual Queue is busy */



#if defined(__linux__)
#include "via_dmablit.h"

/*
 * This define and all its references can be removed when
 * the DMA blit code has been implemented for FreeBSD.
 */
#define VIA_HAVE_DMABLIT 1
#define VIA_HAVE_CORE_MM 1
#define VIA_HAVE_FENCE   1
#define VIA_HAVE_BUFFER  1
#endif

#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;
	struct timeval last_vblank;
	int last_vblank_valid;
	unsigned usec_per_vblank;
	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;
	/* Memory manager stuff */
#ifdef VIA_HAVE_CORE_MM
	unsigned int idle_fault;
	drm_sman_t sman;
	int vram_initialized;
	int agp_initialized;
	unsigned long vram_offset;
	unsigned long agp_offset;
#endif
#ifdef VIA_HAVE_DMABLIT
	drm_via_blitq_t blit_queues[VIA_NUM_BLIT_ENGINES];
#endif
        uint32_t dma_diff;
#ifdef VIA_HAVE_FENCE
	spinlock_t fence_lock;
	uint32_t emit_0_sequence;
	int have_idlelock;
	struct timer_list fence_timer;
#endif
} drm_via_private_t;

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 */
#define VIA_BASE ((dev_priv->mmio))

#define VIA_READ(reg)		DRM_READ32(VIA_BASE, reg)
#define VIA_WRITE(reg,val)	DRM_WRITE32(VIA_BASE, reg, val)
#define VIA_READ8(reg)		DRM_READ8(VIA_BASE, reg)
#define VIA_WRITE8(reg,val)	DRM_WRITE8(VIA_BASE, reg, val)

extern drm_ioctl_desc_t via_ioctls[];
extern int via_max_ioctl;

extern int via_fb_init(DRM_IOCTL_ARGS);
extern int via_mem_alloc(DRM_IOCTL_ARGS);
extern int via_mem_free(DRM_IOCTL_ARGS);
extern int via_agp_init(DRM_IOCTL_ARGS);
extern int via_map_init(DRM_IOCTL_ARGS);
extern int via_decoder_futex(DRM_IOCTL_ARGS);
extern int via_wait_irq(DRM_IOCTL_ARGS);
extern int via_dma_blit_sync( DRM_IOCTL_ARGS );
extern int via_dma_blit( DRM_IOCTL_ARGS );

extern int via_driver_load(drm_device_t *dev, unsigned long chipset);
extern int via_driver_unload(drm_device_t *dev);
extern int via_final_context(drm_device_t * dev, int context);

extern int via_do_cleanup_map(drm_device_t * dev);
extern int via_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence);

extern irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS);
extern void via_driver_irq_preinstall(drm_device_t * dev);
extern void via_driver_irq_postinstall(drm_device_t * dev);
extern void via_driver_irq_uninstall(drm_device_t * dev);

extern int via_dma_cleanup(drm_device_t * dev);
extern void via_init_command_verifier(void);
extern int via_driver_dma_quiescent(drm_device_t * 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);

#ifdef VIA_HAVE_CORE_MM
extern void via_reclaim_buffers_locked(drm_device_t *dev, struct file *filp);
extern void via_lastclose(drm_device_t *dev);
#else
extern int via_init_context(drm_device_t * dev, int context);
#endif

#ifdef VIA_HAVE_DMABLIT
extern void via_dmablit_handler(drm_device_t *dev, int engine, int from_irq);
extern void via_init_dmablit(drm_device_t *dev);
#endif

#ifdef VIA_HAVE_FENCE
extern void via_fence_timer(unsigned long data);
extern void via_poke_flush(drm_device_t * dev, uint32_t class);
extern int via_fence_emit_sequence(drm_device_t * dev, uint32_t class,
				   uint32_t flags,
				   uint32_t * sequence,
				   uint32_t * native_type);
extern int via_fence_has_irq(struct drm_device * dev, uint32_t class,
			     uint32_t flags);
#endif

#ifdef VIA_HAVE_BUFFER
extern drm_ttm_backend_t *via_create_ttm_backend_entry(drm_device_t *dev);
extern int via_fence_types(drm_buffer_object_t *bo, uint32_t *class, uint32_t *type);
extern int via_invalidate_caches(drm_device_t *dev, uint32_t buffer_flags);
extern int via_init_mem_type(drm_device_t *dev, uint32_t type,
			       drm_mem_type_manager_t *man);
extern uint32_t via_evict_mask(drm_buffer_object_t *bo);
extern int via_move(drm_buffer_object_t *bo, int evict,
	      	int no_wait, drm_bo_mem_reg_t *new_mem);
#endif

#endif
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