gpu: msm: Add new Adreno driver
* Temporary place for this.
Change-Id: I83b5d75fbd201c352d011ed43f21ebe3576e058c
diff --git a/drivers/gpu/msm2/adreno_ringbuffer.h b/drivers/gpu/msm2/adreno_ringbuffer.h
new file mode 100644
index 0000000..3aa0101
--- /dev/null
+++ b/drivers/gpu/msm2/adreno_ringbuffer.h
@@ -0,0 +1,157 @@
+/* Copyright (c) 2002,2007-2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ */
+#ifndef __ADRENO_RINGBUFFER_H
+#define __ADRENO_RINGBUFFER_H
+
+/*
+ * Adreno ringbuffer sizes in bytes - these are converted to
+ * the appropriate log2 values in the code
+ */
+
+#define KGSL_RB_SIZE (32 * 1024)
+#define KGSL_RB_BLKSIZE 16
+
+/* CP timestamp register */
+#define REG_CP_TIMESTAMP REG_SCRATCH_REG0
+
+
+struct kgsl_device;
+struct kgsl_device_private;
+
+#define GSL_RB_MEMPTRS_SCRATCH_COUNT 8
+struct kgsl_rbmemptrs {
+ int rptr;
+ int wptr_poll;
+};
+
+#define GSL_RB_MEMPTRS_RPTR_OFFSET \
+ (offsetof(struct kgsl_rbmemptrs, rptr))
+
+#define GSL_RB_MEMPTRS_WPTRPOLL_OFFSET \
+ (offsetof(struct kgsl_rbmemptrs, wptr_poll))
+
+struct adreno_ringbuffer {
+ struct kgsl_device *device;
+ uint32_t flags;
+
+ struct kgsl_memdesc buffer_desc;
+
+ struct kgsl_memdesc memptrs_desc;
+ struct kgsl_rbmemptrs *memptrs;
+
+ /*ringbuffer size */
+ unsigned int sizedwords;
+
+ unsigned int wptr; /* write pointer offset in dwords from baseaddr */
+
+ unsigned int global_ts;
+};
+
+
+#define GSL_RB_WRITE(device, ring, gpuaddr, data) \
+ do { \
+ *ring = data; \
+ wmb(); \
+ kgsl_cffdump_setmem(device, gpuaddr, data, 4); \
+ ring++; \
+ gpuaddr += sizeof(uint); \
+ } while (0)
+
+/* enable timestamp (...scratch0) memory shadowing */
+#define GSL_RB_MEMPTRS_SCRATCH_MASK 0x1
+
+/* mem rptr */
+#define GSL_RB_CNTL_NO_UPDATE 0x0 /* enable */
+
+/**
+ * adreno_get_rptr - Get the current ringbuffer read pointer
+ * @rb - the ringbuffer
+ *
+ * Get the current read pointer, which is written by the GPU.
+ */
+static inline unsigned int
+adreno_get_rptr(struct adreno_ringbuffer *rb)
+{
+ unsigned int result = rb->memptrs->rptr;
+ rmb();
+ return result;
+}
+
+#define GSL_RB_CNTL_POLL_EN 0x0 /* disable */
+
+/*
+ * protected mode error checking below register address 0x800
+ * note: if CP_INTERRUPT packet is used then checking needs
+ * to change to below register address 0x7C8
+ */
+#define GSL_RB_PROTECTED_MODE_CONTROL 0x200001F2
+
+int adreno_ringbuffer_issueibcmds(struct kgsl_device_private *dev_priv,
+ struct kgsl_context *context,
+ struct kgsl_cmdbatch *cmdbatch,
+ uint32_t *timestamp);
+
+int adreno_ringbuffer_submitcmd(struct adreno_device *adreno_dev,
+ struct kgsl_cmdbatch *cmdbatch);
+
+int adreno_ringbuffer_init(struct kgsl_device *device);
+
+int adreno_ringbuffer_warm_start(struct adreno_ringbuffer *rb);
+
+int adreno_ringbuffer_start(struct adreno_ringbuffer *rb);
+
+void adreno_ringbuffer_stop(struct adreno_ringbuffer *rb);
+
+void adreno_ringbuffer_close(struct adreno_ringbuffer *rb);
+
+unsigned int adreno_ringbuffer_issuecmds(struct kgsl_device *device,
+ struct adreno_context *drawctxt,
+ unsigned int flags,
+ unsigned int *cmdaddr,
+ int sizedwords);
+
+void adreno_ringbuffer_submit(struct adreno_ringbuffer *rb);
+
+void kgsl_cp_intrcallback(struct kgsl_device *device);
+
+unsigned int *adreno_ringbuffer_allocspace(struct adreno_ringbuffer *rb,
+ struct adreno_context *context,
+ unsigned int numcmds);
+
+int adreno_ringbuffer_read_pfp_ucode(struct kgsl_device *device);
+
+int adreno_ringbuffer_read_pm4_ucode(struct kgsl_device *device);
+
+static inline int adreno_ringbuffer_count(struct adreno_ringbuffer *rb,
+ unsigned int rptr)
+{
+ if (rb->wptr >= rptr)
+ return rb->wptr - rptr;
+ return rb->wptr + rb->sizedwords - rptr;
+}
+
+/* Increment a value by 4 bytes with wrap-around based on size */
+static inline unsigned int adreno_ringbuffer_inc_wrapped(unsigned int val,
+ unsigned int size)
+{
+ return (val + sizeof(unsigned int)) % size;
+}
+
+/* Decrement a value by 4 bytes with wrap-around based on size */
+static inline unsigned int adreno_ringbuffer_dec_wrapped(unsigned int val,
+ unsigned int size)
+{
+ return (val + size - sizeof(unsigned int)) % size;
+}
+
+#endif /* __ADRENO_RINGBUFFER_H */