drm/tegra/falcon.c

8 #include <linux/firmware.h>
61 	 * Use second DMA context (i.e. the one for firmware). Strictly
62 	 * speaking, at this point both DMA contexts point to the firmware
63 	 * stream ID, but this register's value will be reused by the firmware
80 				       const struct firmware *firmware)
82 	u32 *virt = falcon->firmware.virt;
86 	for (i = 0; i < firmware->size / sizeof(u32); i++)
87 		virt[i] = le32_to_cpu(((__le32 *)firmware->data)[i]);
92 	struct falcon_fw_bin_header_v1 *bin = (void *)falcon->firmware.virt;
97 		dev_err(falcon->dev, "incorrect firmware magic\n");
103 		dev_err(falcon->dev, "unsupported firmware version\n");
107 	/* check that the firmware size is consistent */
108 	if (bin->size > falcon->firmware.size) {
109 		dev_err(falcon->dev, "firmware image size inconsistency\n");
113 	os = falcon->firmware.virt + bin->os_header_offset;
115 	falcon->firmware.bin_data.size = bin->os_size;
116 	falcon->firmware.bin_data.offset = bin->os_data_offset;
117 	falcon->firmware.code.offset = os->code_offset;
118 	falcon->firmware.code.size = os->code_size;
119 	falcon->firmware.data.offset = os->data_offset;
120 	falcon->firmware.data.size = os->data_size;
130 	err = request_firmware(&falcon->firmware.firmware, name, falcon->dev);
134 	falcon->firmware.size = falcon->firmware.firmware->size;
141 	const struct firmware *firmware = falcon->firmware.firmware;
144 	/* copy firmware image into local area. this also ensures endianness */
145 	falcon_copy_firmware_image(falcon, firmware);
150 		dev_err(falcon->dev, "failed to parse firmware image\n");
154 	release_firmware(firmware);
155 	falcon->firmware.firmware = NULL;
162 	falcon->firmware.virt = NULL;
169 	if (falcon->firmware.firmware)
170 		release_firmware(falcon->firmware.firmware);
179 	if (!falcon->firmware.virt)
192 	falcon_writel(falcon, (falcon->firmware.iova +
193 			       falcon->firmware.bin_data.offset) >> 8,
197 	for (offset = 0; offset < falcon->firmware.data.size; offset += 256)
199 				  falcon->firmware.data.offset + offset,
203 	for (offset = 0; offset < falcon->firmware.code.size; offset += 256)
204 		falcon_copy_chunk(falcon, falcon->firmware.code.offset + offset,