diff options
Diffstat (limited to 'drivers/gpu/drm/emgd/emgd/include/rb.h')
| -rw-r--r-- | drivers/gpu/drm/emgd/emgd/include/rb.h | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/drivers/gpu/drm/emgd/emgd/include/rb.h b/drivers/gpu/drm/emgd/emgd/include/rb.h deleted file mode 100644 index 59cdd3e7a9f1..000000000000 --- a/drivers/gpu/drm/emgd/emgd/include/rb.h +++ /dev/null @@ -1,187 +0,0 @@ -/* -*- pse-c -*- - *----------------------------------------------------------------------------- - * Filename: rb.h - * $Revision: 1.7 $ - *----------------------------------------------------------------------------- - * Copyright © 2002-2010, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - *----------------------------------------------------------------------------- - * Description: - * This header file describes the inter-module interface for using the - * ring buffer. This is a legacy interface that is not strictly - * device-independent. It is kept here because many legacy chipsets use - * this interface. - *----------------------------------------------------------------------------- - */ - -#ifndef _RB_H -#define _RB_H - -#include <igd_rb.h> -#include <igd_errno.h> - -#include <context.h> -#include <module_init.h> -#include <mode.h> - -#include <io.h> -#include <memory.h> -#include <sched.h> - - -/* - * The rb_buffer contents should be treated as opaque but are defined - * here for the use in the inline functions below. - */ -typedef struct _rb_buffer { - unsigned int id; /* ring index */ - unsigned long size; /* size of rb in bytes */ - unsigned long tail_off; - unsigned long dead_off; - unsigned long avail; - unsigned long addr; /* starting address of rb */ - unsigned char *virt; /* virt starting address of rb */ - unsigned char *start; /* ring buffer start register offset */ - unsigned char *head; /* ring buffer head register offset */ - unsigned char *tail; /* ring buffer tail register offset */ - unsigned char *ctrl; /* ring buffer ctrl register offset */ - unsigned char *sync; /* used to synchronize s/w interface - * code via rb_sync() */ - unsigned long next_sync; - int state; /* on or off state */ - unsigned long last_head_value; /* used for checking ring buf lockup, - * keeps last head value*/ - os_alarm_t last_head_time; /* used for checking ring buf lockup, - * keeps last head time*/ - unsigned long reservation; /* increments upon each rb_reserver(), - * reset to zero upon rb_update() */ - unsigned long sync_wrap; /* Sync number to wrap at */ - igd_context_t * context_ptr; /*back pointer to the main driver context */ - igd_appcontext_h appcontext; /* Appcontext that is current on the ring */ - unsigned int skip_timeout; /* skip the timeout check */ - unsigned int force_reset_rb; /* force a rb reset */ -} rb_buffer_t; - - -#define MODE_GET_RING(d, p) \ - ((rb_buffer_t *)((igd_display_pipe_t *)((igd_display_context_t *)d)->pipe)->queue[p]) - -/* - * Flags used exclusively by rb_reserve() - */ -#define RB_RESERVE_BLOCK 0x00000000 -#define RB_RESERVE_NONBLOCK 0x00000001 - - -/* - * Determine how much space is available in the ring buffer. - */ -unsigned long rb_avail(rb_buffer_t *buffer); - - -#define MODE_PIPE_ALLOCED(d) \ - ((igd_display_pipe_t *)((igd_display_context_t *)d)->pipe) - -extern igd_command_t *rb_slow_reserve(rb_buffer_t *buffer, - unsigned long size, - unsigned long flags); -/* - * For Debug do not use the inline ring functions. It makes it hard - * to add breakpoints. - */ -#ifdef DEBUG_BUILD_TYPE -extern igd_command_t *rb_reserve(rb_buffer_t *buffer, - unsigned long size, - unsigned long flags); - -extern int rb_update(rb_buffer_t *buffer, - igd_command_t *addr); - -#else -#ifdef CONFIG_CMD -static __inline igd_command_t *rb_reserve(rb_buffer_t *buffer, - unsigned long size, - unsigned long flags) -{ - if (buffer->state == CMD_CONTROL_OFF) { - /* ring buffer is turned off, so don't allow a rb_reserve() */ - buffer->context_ptr->igd_device_error_no = -IGD_ERROR_PWRDOWN; - return(NULL); - } - - /* - * Change size to bytes for efficiency. - */ - size = ((size<<2) + 7) & ~7; - - if(buffer->reservation) { - buffer->avail += buffer->reservation; - } - buffer->reservation = size; - - if(buffer->avail > size) { - buffer->avail -= size; - return (igd_command_t *)(buffer->virt + buffer->tail_off); - } - - return rb_slow_reserve(buffer, size, flags); -} - - -static __inline int rb_update(rb_buffer_t *buffer, - igd_command_t *addr) -{ - unsigned long tail_off; -/* tail_off = (addr - buffer->virt); */ - tail_off = (unsigned long)((unsigned char *)(addr) - buffer->virt); - - buffer->reservation = 0; - buffer->tail_off = tail_off; - - if(buffer->tail_off & 0x7) { - EMGD_WRITE32(0, buffer->virt + buffer->tail_off); - buffer->tail_off += 4; - buffer->avail -= 4; - } - - EMGD_WRITE32(buffer->tail_off, buffer->tail); - - return 0; -} -#else -static __inline igd_command_t *rb_reserve(rb_buffer_t *buffer, - unsigned long size, - unsigned long flags) -{ - return NULL; -} - -static __inline int rb_update(rb_buffer_t *buffer, - igd_command_t *addr) -{ - return 0; -} -#endif /* CONFIG_CMD */ -#endif - -#endif /* _RB_H */ - -/*---------------------------------------------------------------------------- - * File Revision History - * $Id: rb.h,v 1.7 2010/08/06 17:50:21 rclovrie Exp $ - * $Source: /nfs/fm/proj/eia/cvsroot/koheo/linux/egd_drm/emgd/include/rb.h,v $ - *---------------------------------------------------------------------------- - */ |