diff options
author | Gil Pitney <gil.pitney@linaro.org> | 2014-10-28 18:00:42 -0700 |
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committer | Gil Pitney <gil.pitney@linaro.org> | 2014-10-28 18:00:42 -0700 |
commit | 61b2c94d9e64758e55730be6a3fc9006c171db85 (patch) | |
tree | f564f09ebf93ba293dfa225bd374df6f1f37aa01 /src/core/dsp/memmap.h |
Initial Commit: Based on TI OpenCL v0.8, originally based on clover.shamrock_v0.8
This is a continuation of the clover OpenCL project:
http://people.freedesktop.org/~steckdenis/clover
based on the contributions from Texas Instruments for Keystone II DSP device:
git.ti.com/opencl
and adding contributions from Linaro for ARM CPU-only support.
See README.txt for more info, and build instructions.
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>
Diffstat (limited to 'src/core/dsp/memmap.h')
-rw-r--r-- | src/core/dsp/memmap.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/core/dsp/memmap.h b/src/core/dsp/memmap.h new file mode 100644 index 0000000..503540e --- /dev/null +++ b/src/core/dsp/memmap.h @@ -0,0 +1,120 @@ +/****************************************************************************** + * Copyright (c) 2013-2014, Texas Instruments Incorporated - http://www.ti.com/ + * 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 Texas Instruments Incorporated 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. + *****************************************************************************/ +#define ERR(status, msg) if (status) { printf("ERROR: %s\n", msg); exit(-1); } + +class DSP_MappedMem +{ + public: + DSP_MappedMem(uint32_t dsp_id, uint32_t size) + : p_size(size), p_dsp_id(dsp_id), p_dsp_addr(0) + p_num_buffers(CEIL_DIVIDE(size, HOST_CMEM_BUFFER_SIZE)) + { + p_buffers = new [p_num_buffers] cmem_host_buf_desc_t; + ERR(!p_buffers, "Cannot allocate host memory for a DSP Mapped Region"); + + int status + for (int i = 0; i< num_buffers; i++) + { + status = bufmgrAlloc(DmaBufPool, 1, &p_buffers[i]); + ERR(status, "Cannot allocate CMEM pool for a DSP Mapped Region"); + } + + /*--------------------------------------------------------------------- + * Allocate DSP range + *--------------------------------------------------------------------*/ + status = pciedrv_dsp_memrange_alloc(dsp_id, size, p_dsp_addr); + ERR(status, "PCIe driver dsp memrange alloc failed"); + + /*--------------------------------------------------------------------- + * Map Input buffers to dsp range + *--------------------------------------------------------------------*/ + status = pciedrv_map_bufs_to_dsp_memrange(dsp_id, num_buffers, + p_buffers, (uint32_t) p_dsp_addr); + ERR(status, "PCIe driver dsp map bufs to memrange failed"); + } + + ~DSP_MappedMem() + { + /*--------------------------------------------------------------------- + * Free DSP range + *--------------------------------------------------------------------*/ + int status = pciedrv_dsp_memrange_free(dsp_id, size, p_dsp_addr); + ERR(status, "PCIe driver dsp memrange free failed"); + + for (int i = 0; i< num_buffers; i++) + { + status = bufmgrFreeDesc(DmaBufPool, &p_buffers[i]); + ERR(status, "Cannot free CMEM pool for a DSP Mapped Region"); + } + + delete [p_num_buffers] p_buffers; + } + + void copy_in(void* p, uint32_t size) + { + ERR(size > p_size, "DSP Mapped region input overflow"); + + uint32_t remaining_size = size; + uint32_t offset = 0; + + for (int i = 0; remaining_size; i++) + { + int chunk_size = std::min(remaining_size, p_buffers[i].length); + + memcpy(p_buffers[i].user_addr, p + offset, chunk_size); + + remaining_size -= chunk_size; + offset += chunk_size; + } + } + + void copy_out(void* p, uint32_t size) + { + ERR(size > p_size, "DSP Mapped region output underrflow"); + + uint32_t remaining_size = size; + uint32_t offset = 0; + + for (int i = 0; remaining_size; i++) + { + int chunk_size = std::min(remaining_size, p_buffers[i].length); + + memcpy(p + offset, p_buffers[i].user_addr, chunk_size); + + remaining_size -= chunk_size; + offset += chunk_size; + } + } + + private: + uint32_t p_size; + uint32_t p_dsp_id; + uint32_t p_dsp_addr; + uint32_t p_num_buffers; + cmem_host_buf_desc_t *p_buffers; +}; |