linux/drivers/gpu/host1x/hw/hw_host1x01_channel.h
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   1/*
   2 * Copyright (c) 2012-2013, NVIDIA Corporation.
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms and conditions of the GNU General Public License,
   6 * version 2, as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope it will be useful, but WITHOUT
   9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11 * more details.
  12 *
  13 * You should have received a copy of the GNU General Public License
  14 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 *
  16 */
  17
  18 /*
  19  * Function naming determines intended use:
  20  *
  21  *     <x>_r(void) : Returns the offset for register <x>.
  22  *
  23  *     <x>_w(void) : Returns the word offset for word (4 byte) element <x>.
  24  *
  25  *     <x>_<y>_s(void) : Returns size of field <y> of register <x> in bits.
  26  *
  27  *     <x>_<y>_f(u32 v) : Returns a value based on 'v' which has been shifted
  28  *         and masked to place it at field <y> of register <x>.  This value
  29  *         can be |'d with others to produce a full register value for
  30  *         register <x>.
  31  *
  32  *     <x>_<y>_m(void) : Returns a mask for field <y> of register <x>.  This
  33  *         value can be ~'d and then &'d to clear the value of field <y> for
  34  *         register <x>.
  35  *
  36  *     <x>_<y>_<z>_f(void) : Returns the constant value <z> after being shifted
  37  *         to place it at field <y> of register <x>.  This value can be |'d
  38  *         with others to produce a full register value for <x>.
  39  *
  40  *     <x>_<y>_v(u32 r) : Returns the value of field <y> from a full register
  41  *         <x> value 'r' after being shifted to place its LSB at bit 0.
  42  *         This value is suitable for direct comparison with other unshifted
  43  *         values appropriate for use in field <y> of register <x>.
  44  *
  45  *     <x>_<y>_<z>_v(void) : Returns the constant value for <z> defined for
  46  *         field <y> of register <x>.  This value is suitable for direct
  47  *         comparison with unshifted values appropriate for use in field <y>
  48  *         of register <x>.
  49  */
  50
  51#ifndef __hw_host1x_channel_host1x_h__
  52#define __hw_host1x_channel_host1x_h__
  53
  54static inline u32 host1x_channel_fifostat_r(void)
  55{
  56        return 0x0;
  57}
  58#define HOST1X_CHANNEL_FIFOSTAT \
  59        host1x_channel_fifostat_r()
  60static inline u32 host1x_channel_fifostat_cfempty_v(u32 r)
  61{
  62        return (r >> 10) & 0x1;
  63}
  64#define HOST1X_CHANNEL_FIFOSTAT_CFEMPTY_V(r) \
  65        host1x_channel_fifostat_cfempty_v(r)
  66static inline u32 host1x_channel_dmastart_r(void)
  67{
  68        return 0x14;
  69}
  70#define HOST1X_CHANNEL_DMASTART \
  71        host1x_channel_dmastart_r()
  72static inline u32 host1x_channel_dmaput_r(void)
  73{
  74        return 0x18;
  75}
  76#define HOST1X_CHANNEL_DMAPUT \
  77        host1x_channel_dmaput_r()
  78static inline u32 host1x_channel_dmaget_r(void)
  79{
  80        return 0x1c;
  81}
  82#define HOST1X_CHANNEL_DMAGET \
  83        host1x_channel_dmaget_r()
  84static inline u32 host1x_channel_dmaend_r(void)
  85{
  86        return 0x20;
  87}
  88#define HOST1X_CHANNEL_DMAEND \
  89        host1x_channel_dmaend_r()
  90static inline u32 host1x_channel_dmactrl_r(void)
  91{
  92        return 0x24;
  93}
  94#define HOST1X_CHANNEL_DMACTRL \
  95        host1x_channel_dmactrl_r()
  96static inline u32 host1x_channel_dmactrl_dmastop(void)
  97{
  98        return 1 << 0;
  99}
 100#define HOST1X_CHANNEL_DMACTRL_DMASTOP \
 101        host1x_channel_dmactrl_dmastop()
 102static inline u32 host1x_channel_dmactrl_dmastop_v(u32 r)
 103{
 104        return (r >> 0) & 0x1;
 105}
 106#define HOST1X_CHANNEL_DMACTRL_DMASTOP_V(r) \
 107        host1x_channel_dmactrl_dmastop_v(r)
 108static inline u32 host1x_channel_dmactrl_dmagetrst(void)
 109{
 110        return 1 << 1;
 111}
 112#define HOST1X_CHANNEL_DMACTRL_DMAGETRST \
 113        host1x_channel_dmactrl_dmagetrst()
 114static inline u32 host1x_channel_dmactrl_dmainitget(void)
 115{
 116        return 1 << 2;
 117}
 118#define HOST1X_CHANNEL_DMACTRL_DMAINITGET \
 119        host1x_channel_dmactrl_dmainitget()
 120#endif
 121