diff options
Diffstat (limited to 'drivers/fmc/fmc-write-eeprom.c')
| -rw-r--r-- | drivers/fmc/fmc-write-eeprom.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/drivers/fmc/fmc-write-eeprom.c b/drivers/fmc/fmc-write-eeprom.c deleted file mode 100644 index 1c7826e3f526..000000000000 --- a/drivers/fmc/fmc-write-eeprom.c +++ /dev/null @@ -1,175 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2012 CERN (www.cern.ch) - * Author: Alessandro Rubini <rubini@gnudd.com> - * - * This work is part of the White Rabbit project, a research effort led - * by CERN, the European Institute for Nuclear Research. - */ -#include <linux/module.h> -#include <linux/string.h> -#include <linux/firmware.h> -#include <linux/init.h> -#include <linux/fmc.h> -#include <asm/unaligned.h> - -/* - * This module uses the firmware loader to program the whole or part - * of the FMC eeprom. The meat is in the _run functions. However, no - * default file name is provided, to avoid accidental mishaps. Also, - * you must pass the busid argument - */ -static struct fmc_driver fwe_drv; - -FMC_PARAM_BUSID(fwe_drv); - -/* The "file=" is like the generic "gateware=" used elsewhere */ -static char *fwe_file[FMC_MAX_CARDS]; -static int fwe_file_n; -module_param_array_named(file, fwe_file, charp, &fwe_file_n, 0444); - -static int fwe_run_tlv(struct fmc_device *fmc, const struct firmware *fw, - int write) -{ - const uint8_t *p = fw->data; - int len = fw->size; - uint16_t thislen, thisaddr; - int err; - - /* format is: 'w' addr16 len16 data... */ - while (len > 5) { - thisaddr = get_unaligned_le16(p+1); - thislen = get_unaligned_le16(p+3); - if (p[0] != 'w' || thislen + 5 > len) { - dev_err(&fmc->dev, "invalid tlv at offset %ti\n", - p - fw->data); - return -EINVAL; - } - err = 0; - if (write) { - dev_info(&fmc->dev, "write %i bytes at 0x%04x\n", - thislen, thisaddr); - err = fmc_write_ee(fmc, thisaddr, p + 5, thislen); - } - if (err < 0) { - dev_err(&fmc->dev, "write failure @0x%04x\n", - thisaddr); - return err; - } - p += 5 + thislen; - len -= 5 + thislen; - } - if (write) - dev_info(&fmc->dev, "write_eeprom: success\n"); - return 0; -} - -static int fwe_run_bin(struct fmc_device *fmc, const struct firmware *fw) -{ - int ret; - - dev_info(&fmc->dev, "programming %zi bytes\n", fw->size); - ret = fmc_write_ee(fmc, 0, (void *)fw->data, fw->size); - if (ret < 0) { - dev_info(&fmc->dev, "write_eeprom: error %i\n", ret); - return ret; - } - dev_info(&fmc->dev, "write_eeprom: success\n"); - return 0; -} - -static int fwe_run(struct fmc_device *fmc, const struct firmware *fw, char *s) -{ - char *last4 = s + strlen(s) - 4; - int err; - - if (!strcmp(last4, ".bin")) - return fwe_run_bin(fmc, fw); - if (!strcmp(last4, ".tlv")) { - err = fwe_run_tlv(fmc, fw, 0); - if (!err) - err = fwe_run_tlv(fmc, fw, 1); - return err; - } - dev_err(&fmc->dev, "invalid file name \"%s\"\n", s); - return -EINVAL; -} - -/* - * Programming is done at probe time. Morever, only those listed with - * busid= are programmed. - * card is probed for, only one is programmed. Unfortunately, it's - * difficult to know in advance when probing the first card if others - * are there. - */ -static int fwe_probe(struct fmc_device *fmc) -{ - int err, index = 0; - const struct firmware *fw; - struct device *dev = &fmc->dev; - char *s; - - if (!fwe_drv.busid_n) { - dev_err(dev, "%s: no busid passed, refusing all cards\n", - KBUILD_MODNAME); - return -ENODEV; - } - - index = fmc_validate(fmc, &fwe_drv); - if (index < 0) { - pr_err("%s: refusing device \"%s\"\n", KBUILD_MODNAME, - dev_name(dev)); - return -ENODEV; - } - if (index >= fwe_file_n) { - pr_err("%s: no filename for device index %i\n", - KBUILD_MODNAME, index); - return -ENODEV; - } - s = fwe_file[index]; - if (!s) { - pr_err("%s: no filename for \"%s\" not programming\n", - KBUILD_MODNAME, dev_name(dev)); - return -ENOENT; - } - err = request_firmware(&fw, s, dev); - if (err < 0) { - dev_err(&fmc->dev, "request firmware \"%s\": error %i\n", - s, err); - return err; - } - fwe_run(fmc, fw, s); - release_firmware(fw); - return 0; -} - -static int fwe_remove(struct fmc_device *fmc) -{ - return 0; -} - -static struct fmc_driver fwe_drv = { - .version = FMC_VERSION, - .driver.name = KBUILD_MODNAME, - .probe = fwe_probe, - .remove = fwe_remove, - /* no table, as the current match just matches everything */ -}; - -static int fwe_init(void) -{ - int ret; - - ret = fmc_driver_register(&fwe_drv); - return ret; -} - -static void fwe_exit(void) -{ - fmc_driver_unregister(&fwe_drv); -} - -module_init(fwe_init); -module_exit(fwe_exit); - -MODULE_LICENSE("GPL"); |