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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.h142
1 files changed, 142 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..305b2ee9066d
--- /dev/null
+++ b/drivers/mxc/amd-gpu/platform/hal/linux/gsl_hwaccess.h
@@ -0,0 +1,142 @@
+/* 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)
+{
+ if (gsl_driver.enable_mmu && (gpubase >= GSL_LINUX_MAP_RANGE_START) && (gpubase < GSL_LINUX_MAP_RANGE_END)) {
+ gsl_linux_map_read(dst, gpubase+gpuoffset, sizebytes, touserspace);
+ } else {
+ 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)
+{
+ if (gsl_driver.enable_mmu && (gpubase >= GSL_LINUX_MAP_RANGE_START) && (gpubase < GSL_LINUX_MAP_RANGE_END)) {
+ gsl_linux_map_write(src, gpubase+gpuoffset, sizebytes, fromuserspace);
+ } else {
+ 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)
+{
+ if (gsl_driver.enable_mmu && (gpubase >= GSL_LINUX_MAP_RANGE_START) && (gpubase < GSL_LINUX_MAP_RANGE_END)) {
+ gsl_linux_map_set(gpuoffset+gpubase, value, sizebytes);
+ } else {
+ 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