/* * Driver for the NXP SAA7164 PCIe bridge * * Copyright (c) 2009 Steven Toth * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include "saa7164.h" #define SAA7164_REV2_FIRMWARE "v4l-saa7164-1.0.2.fw" #define SAA7164_REV2_FIRMWARE_SIZE 3978608 #define SAA7164_REV3_FIRMWARE "v4l-saa7164-1.0.3.fw" #define SAA7164_REV3_FIRMWARE_SIZE 3978608 struct fw_header { u32 firmwaresize; u32 bslsize; u32 reserved; u32 version; }; int saa7164_dl_wait_ack(struct saa7164_dev *dev, u32 reg) { u32 timeout = SAA_DEVICE_TIMEOUT; while ((saa7164_readl(reg) & 0x01) == 0) { timeout -= 10; if (timeout == 0) { printk(KERN_ERR "%s() timeout (no d/l ack)\n", __func__); return -EBUSY; } msleep(100); } return 0; } int saa7164_dl_wait_clr(struct saa7164_dev *dev, u32 reg) { u32 timeout = SAA_DEVICE_TIMEOUT; while (saa7164_readl(reg) & 0x01) { timeout -= 10; if (timeout == 0) { printk(KERN_ERR "%s() timeout (no d/l clr)\n", __func__); return -EBUSY; } msleep(100); } return 0; } /* TODO: move dlflags into dev-> and change to write/readl/b */ /* TODO: Excessive levels of debug */ int saa7164_downloadimage(struct saa7164_dev *dev, u8 *src, u32 srcsize, u32 dlflags, u8 *dst, u32 dstsize) { u32 reg, timeout, offset; u8 *srcbuf = NULL; int ret; u32 dlflag = dlflags; u32 dlflag_ack = dlflag + 4; u32 drflag = dlflag_ack + 4; u32 drflag_ack = drflag + 4; u32 bleflag = drflag_ack + 4; dprintk(DBGLVL_FW, "%s(image=%p, size=%d, flags=0x%x, dst=%p, dstsize=0x%x)\n", __func__, src, srcsize, dlflags, dst, dstsize); if ((src == 0) || (dst == 0)) { ret = -EIO; goto out; } srcbuf = kzalloc(4 * 1048576, GFP_KERNEL); if (NULL == srcbuf) { ret = -ENOMEM; goto out; } if (srcsize > (4*1048576)) { ret = -ENOMEM; goto out; } memcpy(srcbuf, src, srcsize); dprintk(DBGLVL_FW, "%s() dlflag = 0x%x\n", __func__, dlflag); dprintk(DBGLVL_FW, "%s() dlflag_ack = 0x%x\n", __func__, dlflag_ack); dprintk(DBGLVL_FW, "%s() drflag = 0x%x\n", __func__, drflag); dprintk(DBGLVL_FW, "%s() drflag_ack = 0x%x\n", __func__, drflag_ack); dprintk(DBGLVL_FW, "%s() bleflag = 0x%x\n", __func__, bleflag); reg = saa7164_readl(dlflag); dprintk(DBGLVL_FW, "%s() dlflag (0x%x)= 0x%x\n", __func__, dlflag, reg); if (reg == 1) dprintk(DBGLVL_FW, "%s() Download flag already set, please reboot\n", __func__); /* Indicate download start */ saa7164_writel(dlflag, 1); ret = saa7164_dl_wait_ack(dev, dlflag_ack); if (ret < 0) goto out; /* Ack download start, then wait for wait */ saa7164_writel(dlflag, 0); ret = saa7164_dl_wait_clr(dev, dlflag_ack); if (ret < 0) goto out; /* Deal with the raw firmware, in the appropriate chunk size */ for (offset = 0; srcsize > dstsize; srcsize -= dstsize, offset += dstsize) { dprintk(DBGLVL_FW, "%s() memcpy %d\n", __func__, dstsize); memcpy(dst, srcbuf + offset, dstsize); /* Flag the data as ready */ saa7164_writel(drflag, 1); ret = saa7164_dl_wait_ack(dev, drflag_ack); if (ret < 0) goto out; /* Wait for indication data was received */ saa7164_writel(drflag, 0); ret = saa7164_dl_wait_clr(dev, drflag_ack); if (ret < 0) goto out; } dprintk(DBGLVL_FW, "%s() memcpy(l) %d\n", __func__, dstsize); /* Write last block to the device */ memcpy(dst, srcbuf+offset, srcsize); /* Flag the data as ready */ saa7164_writel(drflag, 1); ret = saa7164_dl_wait_ack(dev, drflag_ack); if (ret < 0) goto out; saa7164_writel(drflag, 0); timeout = 0; while (saa7164_readl(bleflag) != SAA_DEVICE_IMAGE_BOOTING) { if (saa7164_readl(bleflag) & SAA_DEVICE_IMAGE_CORRUPT) { printk(KERN_ERR "%s() image corrupt\n", __func__); ret = -EBUSY; goto out; } if (saa7164_readl(bleflag) & SAA_DEVICE_MEMORY_CORRUPT) { printk(KERN_ERR "%s() device memory corrupt\n", __func__); ret = -EBUSY; goto out; } msleep(10); if (timeout++ > 60) break; } printk(KERN_INFO "%s() Image downloaded, booting...\n", __func__); ret = saa7164_dl_wait_clr(dev, drflag_ack); if (ret < 0) goto out; printk(KERN_INFO "%s() Image booted successfully.\n", __func__); ret = 0; out: kfree(srcbuf); return ret; } /* TODO: Excessive debug */ /* Load the firmware. Optionally it can be in ROM or newer versions * can be on disk, saving the expense of the ROM hardware. */ int saa7164_downloadfirmware(struct saa7164_dev *dev) { /* u32 second_timeout = 60 * SAA_DEVICE_TIMEOUT; */ u32 tmp, filesize, version, err_flags, first_timeout, fwlength; u32 second_timeout, updatebootloader = 1, bootloadersize = 0; const struct firmware *fw = NULL; struct fw_header *hdr, *boothdr = NULL, *fwhdr; u32 bootloaderversion = 0, fwloadersize; u8 *bootloaderoffset = NULL, *fwloaderoffset; char *fwname; int ret; dprintk(DBGLVL_FW, "%s()\n", __func__); if (saa7164_boards[dev->board].chiprev == SAA7164_CHIP_REV2) { fwname = SAA7164_REV2_FIRMWARE; fwlength = SAA7164_REV2_FIRMWARE_SIZE; } else { fwname = SAA7164_REV3_FIRMWARE; fwlength = SAA7164_REV3_FIRMWARE_SIZE; } version = saa7164_getcurrentfirmwareversion(dev); if (version == 0x00) { second_timeout = 100; first_timeout = 100; err_flags = saa7164_readl(SAA_BOOTLOADERERROR_FLAGS); dprintk(DBGLVL_FW, "%s() err_flags = %x\n", __func__, err_flags); while (err_flags != SAA_DEVICE_IMAGE_BOOTING) { dprintk(DBGLVL_FW, "%s() err_flags = %x\n", __func__, err_flags); msleep(10); if (err_flags & SAA_DEVICE_IMAGE_CORRUPT) { printk(KERN_ERR "%s() firmware corrupt\n", __func__); break; } if (err_flags & SAA_DEVICE_MEMORY_CORRUPT) { printk(KERN_ERR "%s() device memory corrupt\n", __func__); break; } if (err_flags & SAA_DEVICE_NO_IMAGE) { printk(KERN_ERR "%s() no first image\n", __func__); break; } if (err_flags & SAA_DEVICE_IMAGE_SEARCHING) { first_timeout -= 10; if (first_timeout == 0) { printk(KERN_ERR "%s() no first image\n", __func__); break; } } else if (err_flags & SAA_DEVICE_IMAGE_LOADING) { second_timeout -= 10; if (second_timeout == 0) { printk(KERN_ERR "%s() FW load time exceeded\n", __func__); break; } } else { second_timeout -= 10; if (second_timeout == 0) { printk(KERN_ERR "%s() Unknown bootloader flags 0x%x\n", __func__, err_flags); break; } } err_flags = saa7164_readl(SAA_BOOTLOADERERROR_FLAGS); } /* While != Booting */ if (err_flags == SAA_DEVICE_IMAGE_BOOTING) { dprintk(DBGLVL_FW, "%s() Loader 1 has loaded.\n", __func__); first_timeout = SAA_DEVICE_TIMEOUT; second_timeout = 60 * SAA_DEVICE_TIMEOUT; second_timeout = 100; err_flags = saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS); dprintk(DBGLVL_FW, "%s() err_flags2 = %x\n", __func__, err_flags); while (err_flags != SAA_DEVICE_IMAGE_BOOTING) { dprintk(DBGLVL_FW, "%s() err_flags2 = %x\n", __func__, err_flags); msleep(10); if (err_flags & SAA_DEVICE_IMAGE_CORRUPT) { printk(KERN_ERR "%s() firmware corrupt\n", __func__); break; } if (err_flags & SAA_DEVICE_MEMORY_CORRUPT) { printk(KERN_ERR "%s() device memory corrupt\n", __func__); break; } if (err_flags & SAA_DEVICE_NO_IMAGE) { printk(KERN_ERR "%s() no first image\n", __func__); break; } if (err_flags & SAA_DEVICE_IMAGE_SEARCHING) { first_timeout -= 10; if (first_timeout == 0) { printk(KERN_ERR "%s() no second image\n", __func__); break; } } else if (err_flags & SAA_DEVICE_IMAGE_LOADING) { second_timeout -= 10; if (second_timeout == 0) { printk(KERN_ERR "%s() FW load time exceeded\n", __func__); break; } } else { second_timeout -= 10; if (second_timeout == 0) { printk(KERN_ERR "%s() Unknown bootloader flags 0x%x\n", __func__, err_flags); break; } } err_flags = saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS); } /* err_flags != SAA_DEVICE_IMAGE_BOOTING */ dprintk(DBGLVL_FW, "%s() Loader flags 1:0x%x 2:0x%x.\n", __func__, saa7164_readl(SAA_BOOTLOADERERROR_FLAGS), saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS)); } /* err_flags == SAA_DEVICE_IMAGE_BOOTING */ /* It's possible for both firmwares to have booted, * but that doesn't mean they've finished booting yet. */ if ((saa7164_readl(SAA_BOOTLOADERERROR_FLAGS) == SAA_DEVICE_IMAGE_BOOTING) && (saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS) == SAA_DEVICE_IMAGE_BOOTING)) { dprintk(DBGLVL_FW, "%s() Loader 2 has loaded.\n", __func__); first_timeout = SAA_DEVICE_TIMEOUT; while (first_timeout) { msleep(10); version = saa7164_getcurrentfirmwareversion(dev); if (version) { dprintk(DBGLVL_FW, "%s() All f/w loaded successfully\n", __func__); break; } else { first_timeout -= 10; if (first_timeout == 0) { printk(KERN_ERR "%s() FW did not boot\n", __func__); break; } } } } version = saa7164_getcurrentfirmwareversion(dev); } /* version == 0 */ /* Has the firmware really booted? */ if ((saa7164_readl(SAA_BOOTLOADERERROR_FLAGS) == SAA_DEVICE_IMAGE_BOOTING) && (saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS) == SAA_DEVICE_IMAGE_BOOTING) && (version == 0)) { printk(KERN_ERR "%s() The firmware hung, probably bad firmware\n", __func__); /* Tell the second stage loader we have a deadlock */ saa7164_writel(SAA_DEVICE_DEADLOCK_DETECTED_OFFSET, SAA_DEVICE_DEADLOCK_DETECTED); saa7164_getfirmwarestatus(dev); return -ENOMEM; } dprintk(DBGLVL_FW, "Device has Firmware Version %d.%d.%d.%d\n", (version & 0x0000fc00) >> 10, (version & 0x000003e0) >> 5, (version & 0x0000001f), (version & 0xffff0000) >> 16); /* Load the firmwware from the disk if required */ if (version == 0) { printk(KERN_INFO "%s() Waiting for firmware upload (%s)\n", __func__, fwname); ret = request_firmware(&fw, fwname, &dev->pci->dev); if (ret) { printk(KERN_ERR "%s() Upload failed. " "(file not found?)\n", __func__); return -ENOMEM; } printk(KERN_INFO "%s() firmware read %Zu bytes.\n", __func__, fw->size); if (fw->size != fwlength) { printk(KERN_ERR "xc5000: firmware incorrect size\n"); ret = -ENOMEM; goto out; } printk(KERN_INFO "%s() firmware loaded.\n", __func__); hdr = (struct fw_header *)fw->data; printk(KERN_INFO "Firmware file header part 1:\n"); printk(KERN_INFO " .FirmwareSize = 0x%x\n", hdr->firmwaresize); printk(KERN_INFO " .BSLSize = 0x%x\n", hdr->bslsize); printk(KERN_INFO " .Reserved = 0x%x\n", hdr->reserved); printk(KERN_INFO " .Version = 0x%x\n", hdr->version); /* Retreive bootloader if reqd */ if ((hdr->firmwaresize == 0) && (hdr->bslsize == 0)) /* Second bootloader in the firmware file */ filesize = hdr->reserved * 16; else filesize = (hdr->firmwaresize + hdr->bslsize) * 16 + sizeof(struct fw_header); printk(KERN_INFO "%s() SecBootLoader.FileSize = %d\n", __func__, filesize); /* Get bootloader (if reqd) and firmware header */ if ((hdr->firmwaresize == 0) && (hdr->bslsize == 0)) { /* Second boot loader is required */ /* Get the loader header */ boothdr = (struct fw_header *)(fw->data + sizeof(struct fw_header)); bootloaderversion = saa7164_readl(SAA_DEVICE_2ND_VERSION); dprintk(DBGLVL_FW, "Onboard BootLoader:\n"); dprintk(DBGLVL_FW, "->Flag 0x%x\n", saa7164_readl(SAA_BOOTLOADERERROR_FLAGS)); dprintk(DBGLVL_FW, "->Ack 0x%x\n", saa7164_readl(SAA_DATAREADY_FLAG_ACK)); dprintk(DBGLVL_FW, "->FW Version 0x%x\n", version); dprintk(DBGLVL_FW, "->Loader Version 0x%x\n", bootloaderversion); if ((saa7164_readl(SAA_BOOTLOADERERROR_FLAGS) == 0x03) && (saa7164_readl(SAA_DATAREADY_FLAG_ACK) == 0x00) && (version == 0x00)) { dprintk(DBGLVL_FW, "BootLoader version in " "rom %d.%d.%d.%d\n", (bootloaderversion & 0x0000fc00) >> 10, (bootloaderversion & 0x000003e0) >> 5, (bootloaderversion & 0x0000001f), (bootloaderversion & 0xffff0000) >> 16 ); dprintk(DBGLVL_FW, "BootLoader version " "in file %d.%d.%d.%d\n", (boothdr->version & 0x0000fc00) >> 10, (boothdr->version & 0x000003e0) >> 5, (boothdr->version & 0x0000001f), (boothdr->version & 0xffff0000) >> 16 ); if (bootloaderversion == boothdr->version) updatebootloader = 0; } /* Calculate offset to firmware header */ tmp = (boothdr->firmwaresize + boothdr->bslsize) * 16 + (sizeof(struct fw_header) + sizeof(struct fw_header)); fwhdr = (struct fw_header *)(fw->data+tmp); } else { /* No second boot loader */ fwhdr = hdr; } dprintk(DBGLVL_FW, "Firmware version in file %d.%d.%d.%d\n", (fwhdr->version & 0x0000fc00) >> 10, (fwhdr->version & 0x000003e0) >> 5, (fwhdr->version & 0x0000001f), (fwhdr->version & 0xffff0000) >> 16 ); if (version == fwhdr->version) { /* No download, firmware already on board */ ret = 0; goto out; } if ((hdr->firmwaresize == 0) && (hdr->bslsize == 0)) { if (updatebootloader) { /* Get ready to upload the bootloader */ bootloadersize = (boothdr->firmwaresize + boothdr->bslsize) * 16 + sizeof(struct fw_header); bootloaderoffset = (u8 *)(fw->data + sizeof(struct fw_header)); dprintk(DBGLVL_FW, "bootloader d/l starts.\n"); printk(KERN_INFO "%s() FirmwareSize = 0x%x\n", __func__, boothdr->firmwaresize); printk(KERN_INFO "%s() BSLSize = 0x%x\n", __func__, boothdr->bslsize); printk(KERN_INFO "%s() Reserved = 0x%x\n", __func__, boothdr->reserved); printk(KERN_INFO "%s() Version = 0x%x\n", __func__, boothdr->version); ret = saa7164_downloadimage( dev, bootloaderoffset, bootloadersize, SAA_DOWNLOAD_FLAGS, dev->bmmio + SAA_DEVICE_DOWNLOAD_OFFSET, SAA_DEVICE_BUFFERBLOCKSIZE); if (ret < 0) { printk(KERN_ERR "bootloader d/l has failed\n"); goto out; } dprintk(DBGLVL_FW, "bootloader download complete.\n"); } printk(KERN_ERR "starting firmware download(2)\n"); bootloadersize = (boothdr->firmwaresize + boothdr->bslsize) * 16 + sizeof(struct fw_header); bootloaderoffset = (u8 *)(fw->data + sizeof(struct fw_header)); fwloaderoffset = bootloaderoffset + bootloadersize; /* TODO: fix this bounds overrun here with old f/ws */ fwloadersize = (fwhdr->firmwaresize + fwhdr->bslsize) * 16 + sizeof(struct fw_header); ret = saa7164_downloadimage( dev, fwloaderoffset, fwloadersize, SAA_DEVICE_2ND_DOWNLOADFLAG_OFFSET, dev->bmmio + SAA_DEVICE_2ND_DOWNLOAD_OFFSET, SAA_DEVICE_2ND_BUFFERBLOCKSIZE); if (ret < 0) { printk(KERN_ERR "firmware download failed\n"); goto out; } printk(KERN_ERR "firmware download complete.\n"); } else { /* No bootloader update reqd, download firmware only */ printk(KERN_ERR "starting firmware download(3)\n"); ret = saa7164_downloadimage( dev, (u8 *)fw->data, fw->size, SAA_DOWNLOAD_FLAGS, dev->bmmio + SAA_DEVICE_DOWNLOAD_OFFSET, SAA_DEVICE_BUFFERBLOCKSIZE); if (ret < 0) { printk(KERN_ERR "firmware download failed\n"); goto out; } printk(KERN_ERR "firmware download complete.\n"); } } ret = 0; out: if (fw) release_firmware(fw); return ret; }