diff options
author | Roman Kiryanov <rkir@google.com> | 2018-05-15 13:58:45 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-20 14:31:28 +0200 |
commit | 4ae0fe70a0974519777c7ecfcf145902e865ac63 (patch) | |
tree | 9aec2ec1557ad16bc05c60017e60d600c54ffa4e | |
parent | 45ad559a29629cb1c64ee636563c69b71524f077 (diff) | |
download | op-kernel-dev-4ae0fe70a0974519777c7ecfcf145902e865ac63.zip op-kernel-dev-4ae0fe70a0974519777c7ecfcf145902e865ac63.tar.gz |
Delete the goldfish_nand driver.
This driver was inherited from qemu1 and not used anymore.
Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/staging/goldfish/Kconfig | 7 | ||||
-rw-r--r-- | drivers/staging/goldfish/Makefile | 1 | ||||
-rw-r--r-- | drivers/staging/goldfish/goldfish_nand.c | 441 | ||||
-rw-r--r-- | drivers/staging/goldfish/goldfish_nand_reg.h | 76 |
4 files changed, 0 insertions, 525 deletions
diff --git a/drivers/staging/goldfish/Kconfig b/drivers/staging/goldfish/Kconfig index 4e09460..1a3e576 100644 --- a/drivers/staging/goldfish/Kconfig +++ b/drivers/staging/goldfish/Kconfig @@ -4,10 +4,3 @@ config GOLDFISH_AUDIO ---help--- Emulated audio channel for the Goldfish Android Virtual Device -config MTD_GOLDFISH_NAND - tristate "Goldfish NAND device" - depends on GOLDFISH - depends on MTD - help - Drives the emulated NAND flash device on the Google Goldfish - Android virtual device. diff --git a/drivers/staging/goldfish/Makefile b/drivers/staging/goldfish/Makefile index dec34ad..054eeb8 100644 --- a/drivers/staging/goldfish/Makefile +++ b/drivers/staging/goldfish/Makefile @@ -3,4 +3,3 @@ # obj-$(CONFIG_GOLDFISH_AUDIO) += goldfish_audio.o -obj-$(CONFIG_MTD_GOLDFISH_NAND) += goldfish_nand.o diff --git a/drivers/staging/goldfish/goldfish_nand.c b/drivers/staging/goldfish/goldfish_nand.c deleted file mode 100644 index f5e002e..0000000 --- a/drivers/staging/goldfish/goldfish_nand.c +++ /dev/null @@ -1,441 +0,0 @@ -/* - * drivers/mtd/devices/goldfish_nand.c - * - * Copyright (C) 2007 Google, Inc. - * Copyright (C) 2012 Intel, Inc. - * Copyright (C) 2013 Intel, Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/io.h> -#include <linux/device.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/ioport.h> -#include <linux/vmalloc.h> -#include <linux/mtd/mtd.h> -#include <linux/platform_device.h> -#include <linux/mutex.h> -#include <linux/goldfish.h> -#include <asm/div64.h> -#include <linux/dma-mapping.h> - -#include "goldfish_nand_reg.h" - -struct goldfish_nand { - /* lock protects access to the device registers */ - struct mutex lock; - unsigned char __iomem *base; - struct cmd_params *cmd_params; - size_t mtd_count; - struct mtd_info mtd[0]; -}; - -static u32 goldfish_nand_cmd_with_params(struct mtd_info *mtd, - enum nand_cmd cmd, u64 addr, u32 len, - void *ptr, u32 *rv) -{ - u32 cmdp; - struct goldfish_nand *nand = mtd->priv; - struct cmd_params *cps = nand->cmd_params; - unsigned char __iomem *base = nand->base; - - if (!cps) - return -1; - - switch (cmd) { - case NAND_CMD_ERASE: - cmdp = NAND_CMD_ERASE_WITH_PARAMS; - break; - case NAND_CMD_READ: - cmdp = NAND_CMD_READ_WITH_PARAMS; - break; - case NAND_CMD_WRITE: - cmdp = NAND_CMD_WRITE_WITH_PARAMS; - break; - default: - return -1; - } - cps->dev = mtd - nand->mtd; - cps->addr_high = (u32)(addr >> 32); - cps->addr_low = (u32)addr; - cps->transfer_size = len; - cps->data = (unsigned long)ptr; - writel(cmdp, base + NAND_COMMAND); - *rv = cps->result; - return 0; -} - -static u32 goldfish_nand_cmd(struct mtd_info *mtd, enum nand_cmd cmd, - u64 addr, u32 len, void *ptr) -{ - struct goldfish_nand *nand = mtd->priv; - u32 rv; - unsigned char __iomem *base = nand->base; - - mutex_lock(&nand->lock); - if (goldfish_nand_cmd_with_params(mtd, cmd, addr, len, ptr, &rv)) { - writel(mtd - nand->mtd, base + NAND_DEV); - writel((u32)(addr >> 32), base + NAND_ADDR_HIGH); - writel((u32)addr, base + NAND_ADDR_LOW); - writel(len, base + NAND_TRANSFER_SIZE); - gf_write_ptr(ptr, base + NAND_DATA, base + NAND_DATA_HIGH); - writel(cmd, base + NAND_COMMAND); - rv = readl(base + NAND_RESULT); - } - mutex_unlock(&nand->lock); - return rv; -} - -static int goldfish_nand_erase(struct mtd_info *mtd, struct erase_info *instr) -{ - loff_t ofs = instr->addr; - u32 len = instr->len; - s32 rem; - - if (ofs + len > mtd->size) - goto invalid_arg; - ofs = div_s64_rem(ofs, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - ofs *= (mtd->writesize + mtd->oobsize); - - if (len % mtd->writesize) - goto invalid_arg; - len = len / mtd->writesize * (mtd->writesize + mtd->oobsize); - - if (goldfish_nand_cmd(mtd, NAND_CMD_ERASE, ofs, len, NULL) != len) { - pr_err("%s: erase failed, start %llx, len %x, dev_size %llx, erase_size %x\n", - __func__, ofs, len, mtd->size, mtd->erasesize); - return -EIO; - } - - return 0; - -invalid_arg: - pr_err("%s: invalid erase, start %llx, len %x, dev_size %llx, erase_size %x\n", - __func__, ofs, len, mtd->size, mtd->erasesize); - return -EINVAL; -} - -static int goldfish_nand_read_oob(struct mtd_info *mtd, loff_t ofs, - struct mtd_oob_ops *ops) -{ - s32 rem; - - if (ofs + ops->len > mtd->size) - goto invalid_arg; - if (ops->datbuf && ops->len && ops->len != mtd->writesize) - goto invalid_arg; - if (ops->ooblen + ops->ooboffs > mtd->oobsize) - goto invalid_arg; - - ofs = div_s64_rem(ofs, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - ofs *= (mtd->writesize + mtd->oobsize); - - if (ops->datbuf) - ops->retlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, ofs, - ops->len, ops->datbuf); - ofs += mtd->writesize + ops->ooboffs; - if (ops->oobbuf) - ops->oobretlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, ofs, - ops->ooblen, ops->oobbuf); - return 0; - -invalid_arg: - pr_err("%s: invalid read, start %llx, len %zx, ooblen %zx, dev_size %llx, write_size %x\n", - __func__, ofs, ops->len, ops->ooblen, mtd->size, mtd->writesize); - return -EINVAL; -} - -static int goldfish_nand_write_oob(struct mtd_info *mtd, loff_t ofs, - struct mtd_oob_ops *ops) -{ - s32 rem; - - if (ofs + ops->len > mtd->size) - goto invalid_arg; - if (ops->len && ops->len != mtd->writesize) - goto invalid_arg; - if (ops->ooblen + ops->ooboffs > mtd->oobsize) - goto invalid_arg; - - ofs = div_s64_rem(ofs, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - ofs *= (mtd->writesize + mtd->oobsize); - - if (ops->datbuf) - ops->retlen = goldfish_nand_cmd(mtd, NAND_CMD_WRITE, ofs, - ops->len, ops->datbuf); - ofs += mtd->writesize + ops->ooboffs; - if (ops->oobbuf) - ops->oobretlen = goldfish_nand_cmd(mtd, NAND_CMD_WRITE, ofs, - ops->ooblen, ops->oobbuf); - return 0; - -invalid_arg: - pr_err("%s: invalid write, start %llx, len %zx, ooblen %zx, dev_size %llx, write_size %x\n", - __func__, ofs, ops->len, ops->ooblen, mtd->size, mtd->writesize); - return -EINVAL; -} - -static int goldfish_nand_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - s32 rem; - - if (from + len > mtd->size) - goto invalid_arg; - - from = div_s64_rem(from, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - from *= (mtd->writesize + mtd->oobsize); - - *retlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, from, len, buf); - return 0; - -invalid_arg: - pr_err("%s: invalid read, start %llx, len %zx, dev_size %llx, write_size %x\n", - __func__, from, len, mtd->size, mtd->writesize); - return -EINVAL; -} - -static int goldfish_nand_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - s32 rem; - - if (to + len > mtd->size) - goto invalid_arg; - - to = div_s64_rem(to, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - to *= (mtd->writesize + mtd->oobsize); - - *retlen = goldfish_nand_cmd(mtd, NAND_CMD_WRITE, to, len, (void *)buf); - return 0; - -invalid_arg: - pr_err("%s: invalid write, start %llx, len %zx, dev_size %llx, write_size %x\n", - __func__, to, len, mtd->size, mtd->writesize); - return -EINVAL; -} - -static int goldfish_nand_block_isbad(struct mtd_info *mtd, loff_t ofs) -{ - s32 rem; - - if (ofs >= mtd->size) - goto invalid_arg; - - ofs = div_s64_rem(ofs, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - ofs *= mtd->erasesize / mtd->writesize; - ofs *= (mtd->writesize + mtd->oobsize); - - return goldfish_nand_cmd(mtd, NAND_CMD_BLOCK_BAD_GET, ofs, 0, NULL); - -invalid_arg: - pr_err("%s: invalid arg, ofs %llx, dev_size %llx, write_size %x\n", - __func__, ofs, mtd->size, mtd->writesize); - return -EINVAL; -} - -static int goldfish_nand_block_markbad(struct mtd_info *mtd, loff_t ofs) -{ - s32 rem; - - if (ofs >= mtd->size) - goto invalid_arg; - - ofs = div_s64_rem(ofs, mtd->writesize, &rem); - if (rem) - goto invalid_arg; - ofs *= mtd->erasesize / mtd->writesize; - ofs *= (mtd->writesize + mtd->oobsize); - - if (goldfish_nand_cmd(mtd, NAND_CMD_BLOCK_BAD_SET, ofs, 0, NULL) != 1) - return -EIO; - return 0; - -invalid_arg: - pr_err("%s: invalid arg, ofs %llx, dev_size %llx, write_size %x\n", - __func__, ofs, mtd->size, mtd->writesize); - return -EINVAL; -} - -static int nand_setup_cmd_params(struct platform_device *pdev, - struct goldfish_nand *nand) -{ - dma_addr_t dma_handle; - unsigned char __iomem *base = nand->base; - - nand->cmd_params = dmam_alloc_coherent(&pdev->dev, - sizeof(struct cmd_params), - &dma_handle, GFP_KERNEL); - if (!nand->cmd_params) { - dev_err(&pdev->dev, "allocate buffer failed\n"); - return -ENOMEM; - } - writel((u32)((u64)dma_handle >> 32), base + NAND_CMD_PARAMS_ADDR_HIGH); - writel((u32)dma_handle, base + NAND_CMD_PARAMS_ADDR_LOW); - return 0; -} - -static int goldfish_nand_init_device(struct platform_device *pdev, - struct goldfish_nand *nand, int id) -{ - u32 name_len; - u32 result; - u32 flags; - unsigned char __iomem *base = nand->base; - struct mtd_info *mtd = &nand->mtd[id]; - char *name; - - mutex_lock(&nand->lock); - writel(id, base + NAND_DEV); - flags = readl(base + NAND_DEV_FLAGS); - name_len = readl(base + NAND_DEV_NAME_LEN); - mtd->writesize = readl(base + NAND_DEV_PAGE_SIZE); - mtd->size = readl(base + NAND_DEV_SIZE_LOW); - mtd->size |= (u64)readl(base + NAND_DEV_SIZE_HIGH) << 32; - mtd->oobsize = readl(base + NAND_DEV_EXTRA_SIZE); - mtd->oobavail = mtd->oobsize; - mtd->erasesize = readl(base + NAND_DEV_ERASE_SIZE) / - (mtd->writesize + mtd->oobsize) * mtd->writesize; - mtd->size = div_s64(mtd->size, mtd->writesize + mtd->oobsize); - mtd->size *= mtd->writesize; - dev_dbg(&pdev->dev, - "goldfish nand dev%d: size %llx, page %d, extra %d, erase %d\n", - id, mtd->size, mtd->writesize, - mtd->oobsize, mtd->erasesize); - mutex_unlock(&nand->lock); - - mtd->priv = nand; - - name = devm_kzalloc(&pdev->dev, name_len + 1, GFP_KERNEL); - if (!name) - return -ENOMEM; - mtd->name = name; - - result = goldfish_nand_cmd(mtd, NAND_CMD_GET_DEV_NAME, 0, name_len, - name); - if (result != name_len) { - dev_err(&pdev->dev, - "%s: failed to get dev name %d != %d\n", - __func__, result, name_len); - return -ENODEV; - } - ((char *)mtd->name)[name_len] = '\0'; - - /* Setup the MTD structure */ - mtd->type = MTD_NANDFLASH; - mtd->flags = MTD_CAP_NANDFLASH; - if (flags & NAND_DEV_FLAG_READ_ONLY) - mtd->flags &= ~MTD_WRITEABLE; - if (flags & NAND_DEV_FLAG_CMD_PARAMS_CAP) - nand_setup_cmd_params(pdev, nand); - - mtd->owner = THIS_MODULE; - mtd->_erase = goldfish_nand_erase; - mtd->_read = goldfish_nand_read; - mtd->_write = goldfish_nand_write; - mtd->_read_oob = goldfish_nand_read_oob; - mtd->_write_oob = goldfish_nand_write_oob; - mtd->_block_isbad = goldfish_nand_block_isbad; - mtd->_block_markbad = goldfish_nand_block_markbad; - - if (mtd_device_register(mtd, NULL, 0)) - return -EIO; - - return 0; -} - -static int goldfish_nand_probe(struct platform_device *pdev) -{ - u32 num_dev; - int i; - int err; - u32 num_dev_working; - u32 version; - struct resource *r; - struct goldfish_nand *nand; - unsigned char __iomem *base; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) - return -ENODEV; - - base = devm_ioremap(&pdev->dev, r->start, PAGE_SIZE); - if (!base) - return -ENOMEM; - - version = readl(base + NAND_VERSION); - if (version != NAND_VERSION_CURRENT) { - dev_err(&pdev->dev, - "goldfish_nand_init: version mismatch, got %d, expected %d\n", - version, NAND_VERSION_CURRENT); - return -ENODEV; - } - num_dev = readl(base + NAND_NUM_DEV); - if (num_dev == 0) - return -ENODEV; - - nand = devm_kzalloc(&pdev->dev, sizeof(*nand) + - sizeof(struct mtd_info) * num_dev, GFP_KERNEL); - if (!nand) - return -ENOMEM; - - mutex_init(&nand->lock); - nand->base = base; - nand->mtd_count = num_dev; - platform_set_drvdata(pdev, nand); - - num_dev_working = 0; - for (i = 0; i < num_dev; i++) { - err = goldfish_nand_init_device(pdev, nand, i); - if (err == 0) - num_dev_working++; - } - if (num_dev_working == 0) - return -ENODEV; - return 0; -} - -static int goldfish_nand_remove(struct platform_device *pdev) -{ - struct goldfish_nand *nand = platform_get_drvdata(pdev); - int i; - - for (i = 0; i < nand->mtd_count; i++) { - if (nand->mtd[i].name) - mtd_device_unregister(&nand->mtd[i]); - } - return 0; -} - -static struct platform_driver goldfish_nand_driver = { - .probe = goldfish_nand_probe, - .remove = goldfish_nand_remove, - .driver = { - .name = "goldfish_nand" - } -}; - -module_platform_driver(goldfish_nand_driver); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/goldfish/goldfish_nand_reg.h b/drivers/staging/goldfish/goldfish_nand_reg.h deleted file mode 100644 index 43aeba3..0000000 --- a/drivers/staging/goldfish/goldfish_nand_reg.h +++ /dev/null @@ -1,76 +0,0 @@ -/* - * drivers/mtd/devices/goldfish_nand_reg.h - * - * Copyright (C) 2007 Google, Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#ifndef GOLDFISH_NAND_REG_H -#define GOLDFISH_NAND_REG_H - -enum nand_cmd { - /* Write device name for NAND_DEV to NAND_DATA (vaddr) */ - NAND_CMD_GET_DEV_NAME, - NAND_CMD_READ, - NAND_CMD_WRITE, - NAND_CMD_ERASE, - /* NAND_RESULT is 1 if block is bad, 0 if it is not */ - NAND_CMD_BLOCK_BAD_GET, - NAND_CMD_BLOCK_BAD_SET, - NAND_CMD_READ_WITH_PARAMS, - NAND_CMD_WRITE_WITH_PARAMS, - NAND_CMD_ERASE_WITH_PARAMS -}; - -enum nand_dev_flags { - NAND_DEV_FLAG_READ_ONLY = 0x00000001, - NAND_DEV_FLAG_CMD_PARAMS_CAP = 0x00000002, -}; - -#define NAND_VERSION_CURRENT (1) - -enum nand_reg { - /* Global */ - NAND_VERSION = 0x000, - NAND_NUM_DEV = 0x004, - NAND_DEV = 0x008, - - /* Dev info */ - NAND_DEV_FLAGS = 0x010, - NAND_DEV_NAME_LEN = 0x014, - NAND_DEV_PAGE_SIZE = 0x018, - NAND_DEV_EXTRA_SIZE = 0x01c, - NAND_DEV_ERASE_SIZE = 0x020, - NAND_DEV_SIZE_LOW = 0x028, - NAND_DEV_SIZE_HIGH = 0x02c, - - /* Command */ - NAND_RESULT = 0x040, - NAND_COMMAND = 0x044, - NAND_DATA = 0x048, - NAND_DATA_HIGH = 0x100, - NAND_TRANSFER_SIZE = 0x04c, - NAND_ADDR_LOW = 0x050, - NAND_ADDR_HIGH = 0x054, - NAND_CMD_PARAMS_ADDR_LOW = 0x058, - NAND_CMD_PARAMS_ADDR_HIGH = 0x05c, -}; - -struct cmd_params { - u32 dev; - u32 addr_low; - u32 addr_high; - u32 transfer_size; - unsigned long data; - u32 result; -}; -#endif |