1 files changed, 342 insertions, 0 deletions

diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_firmware.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_firmware.c
new file mode 100644
index 0000000..34cc56f
--- /dev/null
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css_firmware.c
@@ -0,0 +1,342 @@
+/*
+ * Support for Intel Camera Imaging ISP subsystem.
+ * Copyright (c) 2015, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+
+#include <math_support.h>
+#include "platform_support.h"
+#include "sh_css_firmware.h"
+
+#include "sh_css_defs.h"
+#include "ia_css_debug.h"
+#include "sh_css_internal.h"
+#include "ia_css_isp_param.h"
+
+#include "memory_access.h"
+#include "assert_support.h"
+#include "string_support.h"
+
+#include "isp.h"				/* PMEM_WIDTH_LOG2 */
+
+#include "ia_css_isp_params.h"
+#include "ia_css_isp_configs.h"
+#include "ia_css_isp_states.h"
+
+#define _STR(x) #x
+#define STR(x) _STR(x)
+
+struct firmware_header {
+	struct sh_css_fw_bi_file_h file_header;
+	struct ia_css_fw_info      binary_header;
+};
+
+struct fw_param {
+	const char *name;
+	const void *buffer;
+};
+
+/* Warning: same order as SH_CSS_BINARY_ID_* */
+static struct firmware_header *firmware_header;
+
+/* The string STR is a place holder
+ * which will be replaced with the actual RELEASE_VERSION
+ * during package generation. Please do not modify  */
+#ifndef ISP2401
+static const char *release_version = STR(irci_stable_candrpv_0415_20150521_0458);
+#else
+static const char *release_version = STR(irci_ecr-master_20150911_0724);
+#endif
+
+#define MAX_FW_REL_VER_NAME	300
+static char FW_rel_ver_name[MAX_FW_REL_VER_NAME] = "---";
+
+struct ia_css_fw_info	  sh_css_sp_fw;
+#if defined(HAS_BL)
+struct ia_css_fw_info     sh_css_bl_fw;
+#endif /* HAS_BL */
+struct ia_css_blob_descr *sh_css_blob_info; /* Only ISP blob info (no SP) */
+unsigned		  sh_css_num_binaries; /* This includes 1 SP binary */
+
+static struct fw_param *fw_minibuffer;
+
+
+char *sh_css_get_fw_version(void)
+{
+	return FW_rel_ver_name;
+}
+
+
+/*
+ * Split the loaded firmware into blobs
+ */
+
+/* Setup sp/sp1 binary */
+static enum ia_css_err
+setup_binary(struct ia_css_fw_info *fw, const char *fw_data, struct ia_css_fw_info *sh_css_fw, unsigned binary_id)
+{
+	const char *blob_data;
+
+	if ((fw == NULL) || (fw_data == NULL))
+		return IA_CSS_ERR_INVALID_ARGUMENTS;
+
+	blob_data = fw_data + fw->blob.offset;
+
+	*sh_css_fw = *fw;
+
+#if defined(HRT_UNSCHED)
+	sh_css_fw->blob.code = vmalloc(1);
+#else
+	sh_css_fw->blob.code = vmalloc(fw->blob.size);
+#endif
+
+	if (sh_css_fw->blob.code == NULL)
+		return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY;
+
+	memcpy((void *)sh_css_fw->blob.code, blob_data, fw->blob.size);
+	sh_css_fw->blob.data = (char *)sh_css_fw->blob.code + fw->blob.data_source;
+	fw_minibuffer[binary_id].buffer = sh_css_fw->blob.code;
+
+	return IA_CSS_SUCCESS;
+}
+enum ia_css_err
+sh_css_load_blob_info(const char *fw, const struct ia_css_fw_info *bi, struct ia_css_blob_descr *bd, unsigned index)
+{
+	const char *name;
+	const unsigned char *blob;
+
+	if ((fw == NULL) || (bd == NULL))
+		return IA_CSS_ERR_INVALID_ARGUMENTS;
+
+	/* Special case: only one binary in fw */
+	if (bi == NULL) bi = (const struct ia_css_fw_info *)fw;
+
+	name = fw + bi->blob.prog_name_offset;
+	blob = (const unsigned char *)fw + bi->blob.offset;
+
+	/* sanity check */
+	if (bi->blob.size != bi->blob.text_size + bi->blob.icache_size + bi->blob.data_size + bi->blob.padding_size) {
+		/* sanity check, note the padding bytes added for section to DDR alignment */
+		return IA_CSS_ERR_INVALID_ARGUMENTS;
+	}
+
+	if ((bi->blob.offset % (1UL<<(ISP_PMEM_WIDTH_LOG2-3))) != 0)
+		return IA_CSS_ERR_INVALID_ARGUMENTS;
+
+	bd->blob = blob;
+	bd->header = *bi;
+
+	if ((bi->type == ia_css_isp_firmware) || (bi->type == ia_css_sp_firmware)
+#if defined(HAS_BL)
+	|| (bi->type == ia_css_bootloader_firmware)
+#endif /* HAS_BL */
+	)
+	{
+		char *namebuffer;
+		int namelength = (int)strlen(name);
+
+		namebuffer = (char *) kmalloc(namelength + 1, GFP_KERNEL);
+		if (namebuffer == NULL)
+			return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY;
+
+		memcpy(namebuffer, name, namelength + 1);
+
+		bd->name = fw_minibuffer[index].name = namebuffer;
+	} else {
+		bd->name = name;
+	}
+
+	if (bi->type == ia_css_isp_firmware) {
+		size_t paramstruct_size = sizeof(struct ia_css_memory_offsets);
+		size_t configstruct_size = sizeof(struct ia_css_config_memory_offsets);
+		size_t statestruct_size = sizeof(struct ia_css_state_memory_offsets);
+
+		char *parambuf = (char *)kmalloc(paramstruct_size + configstruct_size + statestruct_size,
+							GFP_KERNEL);
+		if (parambuf == NULL)
+			return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY;
+
+		bd->mem_offsets.array[IA_CSS_PARAM_CLASS_PARAM].ptr = NULL;
+		bd->mem_offsets.array[IA_CSS_PARAM_CLASS_CONFIG].ptr = NULL;
+		bd->mem_offsets.array[IA_CSS_PARAM_CLASS_STATE].ptr = NULL;
+
+		fw_minibuffer[index].buffer = parambuf;
+
+		/* copy ia_css_memory_offsets */
+		memcpy(parambuf, (void *)(fw + bi->blob.memory_offsets.offsets[IA_CSS_PARAM_CLASS_PARAM]),
+			paramstruct_size);
+		bd->mem_offsets.array[IA_CSS_PARAM_CLASS_PARAM].ptr = parambuf;
+
+		/* copy ia_css_config_memory_offsets */
+		memcpy(parambuf + paramstruct_size,
+				(void *)(fw + bi->blob.memory_offsets.offsets[IA_CSS_PARAM_CLASS_CONFIG]),
+				configstruct_size);
+		bd->mem_offsets.array[IA_CSS_PARAM_CLASS_CONFIG].ptr = parambuf + paramstruct_size;
+
+		/* copy ia_css_state_memory_offsets */
+		memcpy(parambuf + paramstruct_size + configstruct_size,
+				(void *)(fw + bi->blob.memory_offsets.offsets[IA_CSS_PARAM_CLASS_STATE]),
+				statestruct_size);
+		bd->mem_offsets.array[IA_CSS_PARAM_CLASS_STATE].ptr = parambuf + paramstruct_size + configstruct_size;
+	}
+	return IA_CSS_SUCCESS;
+}
+
+bool
+sh_css_check_firmware_version(const char *fw_data)
+{
+	struct sh_css_fw_bi_file_h *file_header;
+
+	firmware_header = (struct firmware_header *)fw_data;
+	file_header = &firmware_header->file_header;
+
+	if (strcmp(file_header->version, release_version) != 0) {
+		return false;
+	} else {
+		/* firmware version matches */
+		return true;
+	}
+}
+
+enum ia_css_err
+sh_css_load_firmware(const char *fw_data,
+		     unsigned int fw_size)
+{
+	unsigned i;
+	struct ia_css_fw_info *binaries;
+	struct sh_css_fw_bi_file_h *file_header;
+	bool valid_firmware = false;
+
+	firmware_header = (struct firmware_header *)fw_data;
+	file_header = &firmware_header->file_header;
+	binaries = &firmware_header->binary_header;
+	strncpy(FW_rel_ver_name, file_header->version, min(sizeof(FW_rel_ver_name), sizeof(file_header->version)) - 1);
+	valid_firmware = sh_css_check_firmware_version(fw_data);
+	if (!valid_firmware) {
+#if !defined(HRT_RTL)
+		IA_CSS_ERROR("CSS code version (%s) and firmware version (%s) mismatch!",
+				file_header->version, release_version);
+		return IA_CSS_ERR_VERSION_MISMATCH;
+#endif
+	} else {
+		IA_CSS_LOG("successfully load firmware version %s", release_version);
+	}
+
+	/* some sanity checks */
+	if (!fw_data || fw_size < sizeof(struct sh_css_fw_bi_file_h))
+		return IA_CSS_ERR_INTERNAL_ERROR;
+
+	if (file_header->h_size != sizeof(struct sh_css_fw_bi_file_h))
+		return IA_CSS_ERR_INTERNAL_ERROR;
+
+	sh_css_num_binaries = file_header->binary_nr;
+	/* Only allocate memory for ISP blob info */
+	if (sh_css_num_binaries > (NUM_OF_SPS + NUM_OF_BLS)) {
+		sh_css_blob_info = kmalloc(
+					(sh_css_num_binaries - (NUM_OF_SPS + NUM_OF_BLS)) *
+					sizeof(*sh_css_blob_info), GFP_KERNEL);
+		if (sh_css_blob_info == NULL)
+			return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY;
+	} else {
+		sh_css_blob_info = NULL;
+	}
+
+	fw_minibuffer = kzalloc(sh_css_num_binaries * sizeof(struct fw_param), GFP_KERNEL);
+	if (fw_minibuffer == NULL)
+		return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY;
+
+	for (i = 0; i < sh_css_num_binaries; i++) {
+		struct ia_css_fw_info *bi = &binaries[i];
+		/* note: the var below is made static as it is quite large;
+		   if it is not static it ends up on the stack which could
+		   cause issues for drivers
+		*/
+		static struct ia_css_blob_descr bd;
+		enum ia_css_err err;
+
+		err = sh_css_load_blob_info(fw_data, bi, &bd, i);
+
+		if (err != IA_CSS_SUCCESS)
+			return IA_CSS_ERR_INTERNAL_ERROR;
+
+		if (bi->blob.offset + bi->blob.size > fw_size)
+			return IA_CSS_ERR_INTERNAL_ERROR;
+
+		if (bi->type == ia_css_sp_firmware) {
+			if (i != SP_FIRMWARE)
+				return IA_CSS_ERR_INTERNAL_ERROR;
+			err = setup_binary(bi, fw_data, &sh_css_sp_fw, i);
+			if (err != IA_CSS_SUCCESS)
+				return err;
+#if defined(HAS_BL)
+		} else if (bi->type == ia_css_bootloader_firmware) {
+			if (i != BOOTLOADER_FIRMWARE)
+				return IA_CSS_ERR_INTERNAL_ERROR;
+			err = setup_binary(bi, fw_data, &sh_css_bl_fw, i);
+			if (err != IA_CSS_SUCCESS)
+				return err;
+			IA_CSS_LOG("Bootloader binary recognized\n");
+#endif
+		} else {
+			/* All subsequent binaries (including bootloaders) (i>NUM_OF_SPS+NUM_OF_BLS) are ISP firmware */
+			if (i < (NUM_OF_SPS + NUM_OF_BLS))
+				return IA_CSS_ERR_INTERNAL_ERROR;
+
+			if (bi->type != ia_css_isp_firmware)
+				return IA_CSS_ERR_INTERNAL_ERROR;
+			if (sh_css_blob_info == NULL) /* cannot happen but KW does not see this */
+				return IA_CSS_ERR_INTERNAL_ERROR;
+			sh_css_blob_info[i-(NUM_OF_SPS + NUM_OF_BLS)] = bd;
+		}
+	}
+
+	return IA_CSS_SUCCESS;
+}
+
+void sh_css_unload_firmware(void)
+{
+
+	/* release firmware minibuffer */
+	if (fw_minibuffer) {
+		unsigned int i = 0;
+		for (i = 0; i < sh_css_num_binaries; i++) {
+			if (fw_minibuffer[i].name)
+				kfree((void *)fw_minibuffer[i].name);
+			if (fw_minibuffer[i].buffer)
+				vfree((void *)fw_minibuffer[i].buffer);
+		}
+		kfree(fw_minibuffer);
+		fw_minibuffer = NULL;
+	}
+
+	memset(&sh_css_sp_fw, 0, sizeof(sh_css_sp_fw));
+	if (sh_css_blob_info) {
+		kfree(sh_css_blob_info);
+		sh_css_blob_info = NULL;
+	}
+	sh_css_num_binaries = 0;
+}
+
+hrt_vaddress
+sh_css_load_blob(const unsigned char *blob, unsigned size)
+{
+	hrt_vaddress target_addr = mmgr_malloc(size);
+	/* this will allocate memory aligned to a DDR word boundary which
+	   is required for the CSS DMA to read the instructions. */
+
+	assert(blob != NULL);
+	if (target_addr) 
+		mmgr_store(target_addr, blob, size);
+	return target_addr;
+}