diff options
Diffstat (limited to 'drivers/mxc/amd-gpu/platform/hal/linux/gsl_hwaccess.h')
-rw-r--r-- | drivers/mxc/amd-gpu/platform/hal/linux/gsl_hwaccess.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/mxc/amd-gpu/platform/hal/linux/gsl_hwaccess.h b/drivers/mxc/amd-gpu/platform/hal/linux/gsl_hwaccess.h new file mode 100644 index 000000000000..65eadb1e79cf --- /dev/null +++ b/drivers/mxc/amd-gpu/platform/hal/linux/gsl_hwaccess.h @@ -0,0 +1,155 @@ +/* Copyright (c) 2008-2010, Advanced Micro Devices. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Advanced Micro Devices nor + * the names of its contributors may be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef __GSL_HWACCESS_LINUX_H +#define __GSL_HWACCESS_LINUX_H + +#ifdef _LINUX +#include "gsl_linux_map.h" +#endif + +#include <linux/io.h> +#include <asm/system.h> +#include <asm/uaccess.h> + +OSINLINE void +kgsl_hwaccess_memread(void *dst, unsigned int gpubase, unsigned int gpuoffset, unsigned int sizebytes, unsigned int touserspace) +{ +#ifdef GSL_MMU_TRANSLATION_ENABLED + if(gpubase >= GSL_LINUX_MAP_RANGE_START && gpubase < GSL_LINUX_MAP_RANGE_END) + { + gsl_linux_map_read(dst, gpubase+gpuoffset, sizebytes, touserspace); + } + else +#endif + { + mb(); + dsb(); + if (touserspace) + { + if (copy_to_user(dst, (void *)(gpubase + gpuoffset), sizebytes)) + { + return; + } + } + else + { + kos_memcpy(dst, (void *) (gpubase + gpuoffset), sizebytes); + } + mb(); + dsb(); + } +} + +//---------------------------------------------------------------------------- + +OSINLINE void +kgsl_hwaccess_memwrite(unsigned int gpubase, unsigned int gpuoffset, void *src, unsigned int sizebytes, unsigned int fromuserspace) +{ +#ifdef GSL_MMU_TRANSLATION_ENABLED + if(gpubase >= GSL_LINUX_MAP_RANGE_START && gpubase < GSL_LINUX_MAP_RANGE_END) + { + gsl_linux_map_write(src, gpubase+gpuoffset, sizebytes, fromuserspace); + } + else +#endif + { + mb(); + dsb(); + if (fromuserspace) + { + if (copy_from_user((void *)(gpubase + gpuoffset), src, sizebytes)) + { + return; + } + } + else + { + kos_memcpy((void *)(gpubase + gpuoffset), src, sizebytes); + } + mb(); + dsb(); + } +} + +//---------------------------------------------------------------------------- + +OSINLINE void +kgsl_hwaccess_memset(unsigned int gpubase, unsigned int gpuoffset, unsigned int value, unsigned int sizebytes) +{ +#ifdef GSL_MMU_TRANSLATION_ENABLED + if(gpubase >= GSL_LINUX_MAP_RANGE_START && gpubase < GSL_LINUX_MAP_RANGE_END) + gsl_linux_map_set(gpuoffset+gpubase, value, sizebytes); + else +#endif + { + mb(); + dsb(); + kos_memset((void *)(gpubase + gpuoffset), value, sizebytes); + mb(); + dsb(); + } +} + +//---------------------------------------------------------------------------- + +OSINLINE void +kgsl_hwaccess_regread(gsl_deviceid_t device_id, unsigned int gpubase, unsigned int offsetwords, unsigned int *data) +{ + unsigned int *reg; + + // unreferenced formal parameter + (void) device_id; + + reg = (unsigned int *)(gpubase + (offsetwords << 2)); + + mb(); + dsb(); + *data = __raw_readl(reg); + mb(); + dsb(); +} + +//---------------------------------------------------------------------------- + +OSINLINE void +kgsl_hwaccess_regwrite(gsl_deviceid_t device_id, unsigned int gpubase, unsigned int offsetwords, unsigned int data) +{ + unsigned int *reg; + + // unreferenced formal parameter + (void) device_id; + + reg = (unsigned int *)(gpubase + (offsetwords << 2)); + mb(); + dsb(); + __raw_writel(data, reg); + mb(); + dsb(); +} +#endif // __GSL_HWACCESS_WINCE_MX51_H |