1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/dma-mapping.h>
20 static void falcon_writel(struct falcon *falcon, u32 value, u32 offset)  in falcon_writel()  argument
22 	writel(value, falcon->regs + offset);  in falcon_writel()
29 	return readl_poll_timeout(falcon->regs + FALCON_IDLESTATE, value,  in falcon_wait_idle()
37 	return readl_poll_timeout(falcon->regs + FALCON_DMATRFCMD, value,  in falcon_dma_wait_idle()
43 			     unsigned long offset,  in falcon_copy_chunk()  argument
59 	falcon_writel(falcon, offset, FALCON_DMATRFMOFFS);  in falcon_copy_chunk()
69 	u32 *virt = falcon->firmware.virt;  in falcon_copy_firmware_image()
73 	for (i = 0; i < firmware->size / sizeof(u32); i++)  in falcon_copy_firmware_image()
74 		virt[i] = le32_to_cpu(((__le32 *)firmware->data)[i]);  in falcon_copy_firmware_image()
79 	struct falcon_fw_bin_header_v1 *bin = (void *)falcon->firmware.virt;  in falcon_parse_firmware_image()
80 	struct falcon_fw_os_header_v1 *os;  in falcon_parse_firmware_image()  local
83 	if (bin->magic != PCI_VENDOR_ID_NVIDIA && bin->magic != 0x10fe) {  in falcon_parse_firmware_image()
84 		dev_err(falcon->dev, "incorrect firmware magic\n");  in falcon_parse_firmware_image()
85 		return -EINVAL;  in falcon_parse_firmware_image()
89 	if (bin->version != 1) {  in falcon_parse_firmware_image()
90 		dev_err(falcon->dev, "unsupported firmware version\n");  in falcon_parse_firmware_image()
91 		return -EINVAL;  in falcon_parse_firmware_image()
95 	if (bin->size > falcon->firmware.size) {  in falcon_parse_firmware_image()
96 		dev_err(falcon->dev, "firmware image size inconsistency\n");  in falcon_parse_firmware_image()
97 		return -EINVAL;  in falcon_parse_firmware_image()
100 	os = falcon->firmware.virt + bin->os_header_offset;  in falcon_parse_firmware_image()
102 	falcon->firmware.bin_data.size = bin->os_size;  in falcon_parse_firmware_image()
103 	falcon->firmware.bin_data.offset = bin->os_data_offset;  in falcon_parse_firmware_image()
104 	falcon->firmware.code.offset = os->code_offset;  in falcon_parse_firmware_image()
105 	falcon->firmware.code.size = os->code_size;  in falcon_parse_firmware_image()
106 	falcon->firmware.data.offset = os->data_offset;  in falcon_parse_firmware_image()
107 	falcon->firmware.data.size = os->data_size;  in falcon_parse_firmware_image()
117 	err = request_firmware(&falcon->firmware.firmware, name, falcon->dev);  in falcon_read_firmware()
121 	falcon->firmware.size = falcon->firmware.firmware->size;  in falcon_read_firmware()
128 	const struct firmware *firmware = falcon->firmware.firmware;  in falcon_load_firmware()
137 		dev_err(falcon->dev, "failed to parse firmware image\n");  in falcon_load_firmware()
142 	falcon->firmware.firmware = NULL;  in falcon_load_firmware()
149 	falcon->firmware.virt = NULL;  in falcon_init()
156 	if (falcon->firmware.firmware)  in falcon_exit()
157 		release_firmware(falcon->firmware.firmware);  in falcon_exit()
162 	unsigned long offset;  in falcon_boot()  local
166 	if (!falcon->firmware.virt)  in falcon_boot()
167 		return -EINVAL;  in falcon_boot()
169 	err = readl_poll_timeout(falcon->regs + FALCON_DMACTL, value,  in falcon_boot()
179 	falcon_writel(falcon, (falcon->firmware.iova +  in falcon_boot()
180 			       falcon->firmware.bin_data.offset) >> 8,  in falcon_boot()
184 	for (offset = 0; offset < falcon->firmware.data.size; offset += 256)  in falcon_boot()
186 				  falcon->firmware.data.offset + offset,  in falcon_boot()
187 				  offset, FALCON_MEMORY_DATA);  in falcon_boot()
189 	/* copy the code segment into Falcon internal memory */  in falcon_boot()
190 	for (offset = 0; offset < falcon->firmware.code.size; offset += 256)  in falcon_boot()
191 		falcon_copy_chunk(falcon, falcon->firmware.code.offset + offset,  in falcon_boot()
192 				  offset, FALCON_MEMORY_IMEM);  in falcon_boot()
220 		dev_err(falcon->dev, "Falcon boot failed due to timeout\n");  in falcon_boot()