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authorWarner Losh <imp@FreeBSD.org>2019-06-25 04:50:09 +0000
committerWarner Losh <imp@FreeBSD.org>2019-06-25 04:50:09 +0000
commitf5a95d9a07941650493461c255408f5727d0638b (patch)
treeec681c8739341d8c1e8ff3b891e07a31c0fb3ace /sys/dev/nand/nandsim.c
parente861dab451869582008237a8c11e97348d2440ce (diff)
downloadsrc-f5a95d9a0794.tar.gz
src-f5a95d9a0794.zip
Remove NAND and NANDFS support
NANDFS has been broken for years. Remove it. The NAND drivers that remain are for ancient parts that are no longer relevant. They are polled, have terrible performance and just for ancient arm hardware. NAND parts have evolved significantly from this early work and little to none of it would be relevant should someone need to update to support raw nand. This code has been off by default for years and has violated the vnode protocol leading to panics since it was committed. Numerous posts to arch@ and other locations have found no actual users for this software. Relnotes: Yes No Objection From: arch@ Differential Revision: https://reviews.freebsd.org/D20745
Notes
Notes: svn path=/head/; revision=349352
Diffstat (limited to 'sys/dev/nand/nandsim.c')
-rw-r--r--sys/dev/nand/nandsim.c670
1 files changed, 0 insertions, 670 deletions
diff --git a/sys/dev/nand/nandsim.c b/sys/dev/nand/nandsim.c
deleted file mode 100644
index 50e4f8bb2e33..000000000000
--- a/sys/dev/nand/nandsim.c
+++ /dev/null
@@ -1,670 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (C) 2009-2012 Semihalf
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/* Simulated NAND controller driver */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/proc.h>
-#include <sys/bus.h>
-#include <sys/conf.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/malloc.h>
-
-#include <dev/nand/nand.h>
-#include <dev/nand/nandsim.h>
-#include <dev/nand/nandsim_chip.h>
-#include <dev/nand/nandsim_log.h>
-#include <dev/nand/nandsim_swap.h>
-
-struct sim_param sim;
-struct sim_ctrl_conf ctrls[MAX_SIM_DEV];
-
-static struct cdev *nandsim_dev;
-static d_ioctl_t nandsim_ioctl;
-
-static void nandsim_init_sim_param(struct sim_param *);
-static int nandsim_create_ctrl(struct sim_ctrl *);
-static int nandsim_destroy_ctrl(int);
-static int nandsim_ctrl_status(struct sim_ctrl *);
-static int nandsim_create_chip(struct sim_chip *);
-static int nandsim_destroy_chip(struct sim_ctrl_chip *);
-static int nandsim_chip_status(struct sim_chip *);
-static int nandsim_start_ctrl(int);
-static int nandsim_stop_ctrl(int);
-static int nandsim_inject_error(struct sim_error *);
-static int nandsim_get_block_state(struct sim_block_state *);
-static int nandsim_set_block_state(struct sim_block_state *);
-static int nandsim_modify(struct sim_mod *);
-static int nandsim_dump(struct sim_dump *);
-static int nandsim_restore(struct sim_dump *);
-static int nandsim_freeze(struct sim_ctrl_chip *);
-static void nandsim_print_log(struct sim_log *);
-static struct nandsim_chip *get_nandsim_chip(uint8_t, uint8_t);
-
-static struct cdevsw nandsim_cdevsw = {
- .d_version = D_VERSION,
- .d_flags = D_NEEDGIANT,
- .d_ioctl = nandsim_ioctl,
- .d_name = "nandsim",
-};
-
-int
-nandsim_ioctl(struct cdev *dev, u_long cmd, caddr_t data,
- int flags, struct thread *td)
-{
- int ret = 0;
-
- switch (cmd) {
- case NANDSIM_SIM_PARAM:
- nandsim_init_sim_param((struct sim_param *)data);
- break;
- case NANDSIM_CREATE_CTRL:
- ret = nandsim_create_ctrl((struct sim_ctrl *)data);
- break;
- case NANDSIM_DESTROY_CTRL:
- ret = nandsim_destroy_ctrl(*(int *)data);
- break;
- case NANDSIM_STATUS_CTRL:
- ret = nandsim_ctrl_status((struct sim_ctrl *)data);
- break;
- case NANDSIM_CREATE_CHIP:
- ret = nandsim_create_chip((struct sim_chip *)data);
- break;
- case NANDSIM_DESTROY_CHIP:
- ret = nandsim_destroy_chip((struct sim_ctrl_chip *)data);
- break;
- case NANDSIM_STATUS_CHIP:
- ret = nandsim_chip_status((struct sim_chip *)data);
- break;
- case NANDSIM_MODIFY:
- ret = nandsim_modify((struct sim_mod *)data);
- break;
- case NANDSIM_START_CTRL:
- ret = nandsim_start_ctrl(*(int *)data);
- break;
- case NANDSIM_STOP_CTRL:
- ret = nandsim_stop_ctrl(*(int *)data);
- break;
- case NANDSIM_INJECT_ERROR:
- ret = nandsim_inject_error((struct sim_error *)data);
- break;
- case NANDSIM_SET_BLOCK_STATE:
- ret = nandsim_set_block_state((struct sim_block_state *)data);
- break;
- case NANDSIM_GET_BLOCK_STATE:
- ret = nandsim_get_block_state((struct sim_block_state *)data);
- break;
- case NANDSIM_PRINT_LOG:
- nandsim_print_log((struct sim_log *)data);
- break;
- case NANDSIM_DUMP:
- ret = nandsim_dump((struct sim_dump *)data);
- break;
- case NANDSIM_RESTORE:
- ret = nandsim_restore((struct sim_dump *)data);
- break;
- case NANDSIM_FREEZE:
- ret = nandsim_freeze((struct sim_ctrl_chip *)data);
- break;
- default:
- ret = EINVAL;
- break;
- }
-
- return (ret);
-}
-
-static void
-nandsim_init_sim_param(struct sim_param *param)
-{
-
- if (!param)
- return;
-
- nand_debug(NDBG_SIM,"log level:%d output %d", param->log_level,
- param->log_output);
- nandsim_log_level = param->log_level;
- nandsim_log_output = param->log_output;
-}
-
-static int
-nandsim_create_ctrl(struct sim_ctrl *ctrl)
-{
- struct sim_ctrl_conf *sim_ctrl;
-
- nand_debug(NDBG_SIM,"create controller num:%d cs:%d",ctrl->num,
- ctrl->num_cs);
-
- if (ctrl->num >= MAX_SIM_DEV) {
- return (EINVAL);
- }
-
- sim_ctrl = &ctrls[ctrl->num];
- if(sim_ctrl->created)
- return (EEXIST);
-
- sim_ctrl->num = ctrl->num;
- sim_ctrl->num_cs = ctrl->num_cs;
- sim_ctrl->ecc = ctrl->ecc;
- memcpy(sim_ctrl->ecc_layout, ctrl->ecc_layout,
- MAX_ECC_BYTES * sizeof(ctrl->ecc_layout[0]));
- strlcpy(sim_ctrl->filename, ctrl->filename,
- FILENAME_SIZE);
- sim_ctrl->created = 1;
-
- return (0);
-}
-
-static int
-nandsim_destroy_ctrl(int ctrl_num)
-{
-
- nand_debug(NDBG_SIM,"destroy controller num:%d", ctrl_num);
-
- if (ctrl_num >= MAX_SIM_DEV) {
- return (EINVAL);
- }
-
- if (!ctrls[ctrl_num].created) {
- return (ENODEV);
- }
-
- if (ctrls[ctrl_num].running) {
- return (EBUSY);
- }
-
- memset(&ctrls[ctrl_num], 0, sizeof(ctrls[ctrl_num]));
-
- return (0);
-}
-
-static int
-nandsim_ctrl_status(struct sim_ctrl *ctrl)
-{
-
- nand_debug(NDBG_SIM,"status controller num:%d cs:%d",ctrl->num,
- ctrl->num_cs);
-
- if (ctrl->num >= MAX_SIM_DEV) {
- return (EINVAL);
- }
-
- ctrl->num_cs = ctrls[ctrl->num].num_cs;
- ctrl->ecc = ctrls[ctrl->num].ecc;
- memcpy(ctrl->ecc_layout, ctrls[ctrl->num].ecc_layout,
- MAX_ECC_BYTES * sizeof(ctrl->ecc_layout[0]));
- strlcpy(ctrl->filename, ctrls[ctrl->num].filename,
- FILENAME_SIZE);
- ctrl->running = ctrls[ctrl->num].running;
- ctrl->created = ctrls[ctrl->num].created;
-
- return (0);
-}
-
-static int
-nandsim_create_chip(struct sim_chip *chip)
-{
- struct sim_chip *sim_chip;
-
- nand_debug(NDBG_SIM,"create chip num:%d at ctrl:%d", chip->num,
- chip->ctrl_num);
-
- if (chip->ctrl_num >= MAX_SIM_DEV ||
- chip->num >= MAX_CTRL_CS) {
- return (EINVAL);
- }
-
- if (ctrls[chip->ctrl_num].chips[chip->num]) {
- return (EEXIST);
- }
-
- sim_chip = malloc(sizeof(*sim_chip), M_NANDSIM,
- M_WAITOK);
- if (sim_chip == NULL) {
- return (ENOMEM);
- }
-
- memcpy(sim_chip, chip, sizeof(*sim_chip));
- ctrls[chip->ctrl_num].chips[chip->num] = sim_chip;
- sim_chip->created = 1;
-
- return (0);
-}
-
-static int
-nandsim_destroy_chip(struct sim_ctrl_chip *chip)
-{
- struct sim_ctrl_conf *ctrl_conf;
-
- nand_debug(NDBG_SIM,"destroy chip num:%d at ctrl:%d", chip->chip_num,
- chip->ctrl_num);
-
- if (chip->ctrl_num >= MAX_SIM_DEV ||
- chip->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- ctrl_conf = &ctrls[chip->ctrl_num];
-
- if (!ctrl_conf->created || !ctrl_conf->chips[chip->chip_num])
- return (ENODEV);
-
- if (ctrl_conf->running)
- return (EBUSY);
-
- free(ctrl_conf->chips[chip->chip_num], M_NANDSIM);
- ctrl_conf->chips[chip->chip_num] = NULL;
-
- return (0);
-}
-
-static int
-nandsim_chip_status(struct sim_chip *chip)
-{
- struct sim_ctrl_conf *ctrl_conf;
-
- nand_debug(NDBG_SIM,"status for chip num:%d at ctrl:%d", chip->num,
- chip->ctrl_num);
-
- if (chip->ctrl_num >= MAX_SIM_DEV ||
- chip->num >= MAX_CTRL_CS)
- return (EINVAL);
-
- ctrl_conf = &ctrls[chip->ctrl_num];
- if (!ctrl_conf->chips[chip->num])
- chip->created = 0;
- else
- memcpy(chip, ctrl_conf->chips[chip->num], sizeof(*chip));
-
- return (0);
-}
-
-static int
-nandsim_start_ctrl(int num)
-{
- device_t nexus, ndev;
- devclass_t nexus_devclass;
- int ret = 0;
-
- nand_debug(NDBG_SIM,"start ctlr num:%d", num);
-
- if (num >= MAX_SIM_DEV)
- return (EINVAL);
-
- if (!ctrls[num].created)
- return (ENODEV);
-
- if (ctrls[num].running)
- return (EBUSY);
-
- /* We will add our device as a child of the nexus0 device */
- if (!(nexus_devclass = devclass_find("nexus")) ||
- !(nexus = devclass_get_device(nexus_devclass, 0)))
- return (EFAULT);
-
- /*
- * Create a newbus device representing this frontend instance
- *
- * XXX powerpc nexus doesn't implement bus_add_child, so child
- * must be added by device_add_child().
- */
-#if defined(__powerpc__)
- ndev = device_add_child(nexus, "nandsim", num);
-#else
- ndev = BUS_ADD_CHILD(nexus, 0, "nandsim", num);
-#endif
- if (!ndev)
- return (EFAULT);
-
- mtx_lock(&Giant);
- ret = device_probe_and_attach(ndev);
- mtx_unlock(&Giant);
-
- if (ret == 0) {
- ctrls[num].sim_ctrl_dev = ndev;
- ctrls[num].running = 1;
- }
-
- return (ret);
-}
-
-static int
-nandsim_stop_ctrl(int num)
-{
- device_t nexus;
- devclass_t nexus_devclass;
- int ret = 0;
-
- nand_debug(NDBG_SIM,"stop controller num:%d", num);
-
- if (num >= MAX_SIM_DEV) {
- return (EINVAL);
- }
-
- if (!ctrls[num].created || !ctrls[num].running) {
- return (ENODEV);
- }
-
- /* We will add our device as a child of the nexus0 device */
- if (!(nexus_devclass = devclass_find("nexus")) ||
- !(nexus = devclass_get_device(nexus_devclass, 0))) {
- return (ENODEV);
- }
-
- mtx_lock(&Giant);
- if (ctrls[num].sim_ctrl_dev) {
- ret = device_delete_child(nexus, ctrls[num].sim_ctrl_dev);
- ctrls[num].sim_ctrl_dev = NULL;
- }
- mtx_unlock(&Giant);
-
- ctrls[num].running = 0;
-
- return (ret);
-}
-
-static struct nandsim_chip *
-get_nandsim_chip(uint8_t ctrl_num, uint8_t chip_num)
-{
- struct nandsim_softc *sc;
-
- if (!ctrls[ctrl_num].sim_ctrl_dev)
- return (NULL);
-
- sc = device_get_softc(ctrls[ctrl_num].sim_ctrl_dev);
- return (sc->chips[chip_num]);
-}
-
-static void
-nandsim_print_log(struct sim_log *sim_log)
-{
- struct nandsim_softc *sc;
- int len1, len2;
-
- if (!ctrls[sim_log->ctrl_num].sim_ctrl_dev)
- return;
-
- sc = device_get_softc(ctrls[sim_log->ctrl_num].sim_ctrl_dev);
- if (sc->log_buff) {
- len1 = strlen(&sc->log_buff[sc->log_idx + 1]);
- if (len1 >= sim_log->len)
- len1 = sim_log->len;
- copyout(&sc->log_buff[sc->log_idx + 1], sim_log->log, len1);
- len2 = strlen(sc->log_buff);
- if (len2 >= (sim_log->len - len1))
- len2 = (sim_log->len - len1);
- copyout(sc->log_buff, &sim_log->log[len1], len2);
- sim_log->len = len1 + len2;
- }
-}
-
-static int
-nandsim_inject_error(struct sim_error *error)
-{
- struct nandsim_chip *chip;
- struct block_space *bs;
- struct onfi_params *param;
- int page, page_size, block, offset;
-
- nand_debug(NDBG_SIM,"inject error for chip %d at ctrl %d\n",
- error->chip_num, error->ctrl_num);
-
- if (error->ctrl_num >= MAX_SIM_DEV ||
- error->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- if (!ctrls[error->ctrl_num].created || !ctrls[error->ctrl_num].running)
- return (ENODEV);
-
- chip = get_nandsim_chip(error->ctrl_num, error->chip_num);
- param = &chip->params;
- page_size = param->bytes_per_page + param->spare_bytes_per_page;
- block = error->page_num / param->pages_per_block;
- page = error->page_num % param->pages_per_block;
-
- bs = get_bs(chip->swap, block, 1);
- if (!bs)
- return (EINVAL);
-
- offset = (page * page_size) + error->column;
- memset(&bs->blk_ptr[offset], error->pattern, error->len);
-
- return (0);
-}
-
-static int
-nandsim_set_block_state(struct sim_block_state *bs)
-{
- struct onfi_params *params;
- struct nandsim_chip *chip;
- int blocks;
-
- nand_debug(NDBG_SIM,"set block state for %d:%d block %d\n",
- bs->chip_num, bs->ctrl_num, bs->block_num);
-
- if (bs->ctrl_num >= MAX_SIM_DEV ||
- bs->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- chip = get_nandsim_chip(bs->ctrl_num, bs->chip_num);
- params = &chip->params;
- blocks = params->luns * params->blocks_per_lun;
-
- if (bs->block_num > blocks)
- return (EINVAL);
-
- chip->blk_state[bs->block_num].is_bad = bs->state;
-
- if (bs->wearout >= 0)
- chip->blk_state[bs->block_num].wear_lev = bs->wearout;
-
- return (0);
-}
-
-static int
-nandsim_get_block_state(struct sim_block_state *bs)
-{
- struct onfi_params *params;
- struct nandsim_chip *chip;
- int blocks;
-
- if (bs->ctrl_num >= MAX_SIM_DEV ||
- bs->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- nand_debug(NDBG_SIM,"get block state for %d:%d block %d\n",
- bs->chip_num, bs->ctrl_num, bs->block_num);
-
- chip = get_nandsim_chip(bs->ctrl_num, bs->chip_num);
- params = &chip->params;
- blocks = params->luns * params->blocks_per_lun;
-
- if (bs->block_num > blocks)
- return (EINVAL);
-
- bs->state = chip->blk_state[bs->block_num].is_bad;
- bs->wearout = chip->blk_state[bs->block_num].wear_lev;
-
- return (0);
-}
-
-static int
-nandsim_dump(struct sim_dump *dump)
-{
- struct nandsim_chip *chip;
- struct block_space *bs;
- int blk_size;
-
- nand_debug(NDBG_SIM,"dump chip %d %d\n", dump->ctrl_num, dump->chip_num);
-
- if (dump->ctrl_num >= MAX_SIM_DEV ||
- dump->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- chip = get_nandsim_chip(dump->ctrl_num, dump->chip_num);
- blk_size = chip->cg.block_size +
- (chip->cg.oob_size * chip->cg.pgs_per_blk);
-
- bs = get_bs(chip->swap, dump->block_num, 0);
- if (!bs)
- return (EINVAL);
-
- if (dump->len > blk_size)
- dump->len = blk_size;
-
- copyout(bs->blk_ptr, dump->data, dump->len);
-
- return (0);
-}
-
-static int
-nandsim_restore(struct sim_dump *dump)
-{
- struct nandsim_chip *chip;
- struct block_space *bs;
- int blk_size;
-
- nand_debug(NDBG_SIM,"restore chip %d %d\n", dump->ctrl_num,
- dump->chip_num);
-
- if (dump->ctrl_num >= MAX_SIM_DEV ||
- dump->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- chip = get_nandsim_chip(dump->ctrl_num, dump->chip_num);
- blk_size = chip->cg.block_size +
- (chip->cg.oob_size * chip->cg.pgs_per_blk);
-
- bs = get_bs(chip->swap, dump->block_num, 1);
- if (!bs)
- return (EINVAL);
-
- if (dump->len > blk_size)
- dump->len = blk_size;
-
-
- copyin(dump->data, bs->blk_ptr, dump->len);
-
- return (0);
-}
-
-static int
-nandsim_freeze(struct sim_ctrl_chip *ctrl_chip)
-{
- struct nandsim_chip *chip;
-
- if (ctrl_chip->ctrl_num >= MAX_SIM_DEV ||
- ctrl_chip->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- chip = get_nandsim_chip(ctrl_chip->ctrl_num, ctrl_chip->chip_num);
- nandsim_chip_freeze(chip);
-
- return (0);
-}
-
-static int
-nandsim_modify(struct sim_mod *mod)
-{
- struct sim_chip *sim_conf = NULL;
- struct nandsim_chip *sim_chip = NULL;
-
- nand_debug(NDBG_SIM,"modify ctlr %d chip %d", mod->ctrl_num,
- mod->chip_num);
-
- if (mod->field != SIM_MOD_LOG_LEVEL) {
- if (mod->ctrl_num >= MAX_SIM_DEV ||
- mod->chip_num >= MAX_CTRL_CS)
- return (EINVAL);
-
- sim_conf = ctrls[mod->ctrl_num].chips[mod->chip_num];
- sim_chip = get_nandsim_chip(mod->ctrl_num, mod->chip_num);
- }
-
- switch (mod->field) {
- case SIM_MOD_LOG_LEVEL:
- nandsim_log_level = mod->new_value;
- break;
- case SIM_MOD_ERASE_TIME:
- sim_conf->erase_time = sim_chip->erase_delay = mod->new_value;
- break;
- case SIM_MOD_PROG_TIME:
- sim_conf->prog_time = sim_chip->prog_delay = mod->new_value;
- break;
- case SIM_MOD_READ_TIME:
- sim_conf->read_time = sim_chip->read_delay = mod->new_value;
- break;
- case SIM_MOD_ERROR_RATIO:
- sim_conf->error_ratio = mod->new_value;
- sim_chip->error_ratio = mod->new_value;
- break;
- default:
- break;
- }
-
- return (0);
-}
-static int
-nandsim_modevent(module_t mod __unused, int type, void *data __unused)
-{
- struct sim_ctrl_chip chip_ctrl;
- int i, j;
-
- switch (type) {
- case MOD_LOAD:
- nandsim_dev = make_dev(&nandsim_cdevsw, 0,
- UID_ROOT, GID_WHEEL, 0600, "nandsim.ioctl");
- break;
- case MOD_UNLOAD:
- for (i = 0; i < MAX_SIM_DEV; i++) {
- nandsim_stop_ctrl(i);
- chip_ctrl.ctrl_num = i;
- for (j = 0; j < MAX_CTRL_CS; j++) {
- chip_ctrl.chip_num = j;
- nandsim_destroy_chip(&chip_ctrl);
- }
- nandsim_destroy_ctrl(i);
- }
- destroy_dev(nandsim_dev);
- break;
- case MOD_SHUTDOWN:
- break;
- default:
- return (EOPNOTSUPP);
- }
- return (0);
-}
-
-DEV_MODULE(nandsim, nandsim_modevent, NULL);
-MODULE_VERSION(nandsim, 1);
-MODULE_DEPEND(nandsim, nand, 1, 1, 1);
-MODULE_DEPEND(nandsim, alq, 1, 1, 1);