mtd: nand: move raw NAND related code to the raw/ subdir

As part of the process of sharing more code between different NAND
based devices, we need to move all raw NAND related code to the raw/
subdirectory.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

1 files changed, 0 insertions, 355 deletions

diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c
deleted file mode 100644
index be1f28fc7363..000000000000
--- a/drivers/mtd/nand/cs553x_nand.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/*
- * (C) 2005, 2006 Red Hat Inc.
- *
- * Author: David Woodhouse <dwmw2@infradead.org>
- *	   Tom Sylla <tom.sylla@amd.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  Overview:
- *   This is a device driver for the NAND flash controller found on
- *   the AMD CS5535/CS5536 companion chipsets for the Geode processor.
- *   mtd-id for command line partitioning is cs553x_nand_cs[0-3]
- *   where 0-3 reflects the chip select for NAND.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/rawnand.h>
-#include <linux/mtd/nand_ecc.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/msr.h>
-#include <asm/io.h>
-
-#define NR_CS553X_CONTROLLERS	4
-
-#define MSR_DIVIL_GLD_CAP	0x51400000	/* DIVIL capabilitiies */
-#define CAP_CS5535		0x2df000ULL
-#define CAP_CS5536		0x5df500ULL
-
-/* NAND Timing MSRs */
-#define MSR_NANDF_DATA		0x5140001b	/* NAND Flash Data Timing MSR */
-#define MSR_NANDF_CTL		0x5140001c	/* NAND Flash Control Timing */
-#define MSR_NANDF_RSVD		0x5140001d	/* Reserved */
-
-/* NAND BAR MSRs */
-#define MSR_DIVIL_LBAR_FLSH0	0x51400010	/* Flash Chip Select 0 */
-#define MSR_DIVIL_LBAR_FLSH1	0x51400011	/* Flash Chip Select 1 */
-#define MSR_DIVIL_LBAR_FLSH2	0x51400012	/* Flash Chip Select 2 */
-#define MSR_DIVIL_LBAR_FLSH3	0x51400013	/* Flash Chip Select 3 */
-	/* Each made up of... */
-#define FLSH_LBAR_EN		(1ULL<<32)
-#define FLSH_NOR_NAND		(1ULL<<33)	/* 1 for NAND */
-#define FLSH_MEM_IO		(1ULL<<34)	/* 1 for MMIO */
-	/* I/O BARs have BASE_ADDR in bits 15:4, IO_MASK in 47:36 */
-	/* MMIO BARs have BASE_ADDR in bits 31:12, MEM_MASK in 63:44 */
-
-/* Pin function selection MSR (IDE vs. flash on the IDE pins) */
-#define MSR_DIVIL_BALL_OPTS	0x51400015
-#define PIN_OPT_IDE		(1<<0)	/* 0 for flash, 1 for IDE */
-
-/* Registers within the NAND flash controller BAR -- memory mapped */
-#define MM_NAND_DATA		0x00	/* 0 to 0x7ff, in fact */
-#define MM_NAND_CTL		0x800	/* Any even address 0x800-0x80e */
-#define MM_NAND_IO		0x801	/* Any odd address 0x801-0x80f */
-#define MM_NAND_STS		0x810
-#define MM_NAND_ECC_LSB		0x811
-#define MM_NAND_ECC_MSB		0x812
-#define MM_NAND_ECC_COL		0x813
-#define MM_NAND_LAC		0x814
-#define MM_NAND_ECC_CTL		0x815
-
-/* Registers within the NAND flash controller BAR -- I/O mapped */
-#define IO_NAND_DATA		0x00	/* 0 to 3, in fact */
-#define IO_NAND_CTL		0x04
-#define IO_NAND_IO		0x05
-#define IO_NAND_STS		0x06
-#define IO_NAND_ECC_CTL		0x08
-#define IO_NAND_ECC_LSB		0x09
-#define IO_NAND_ECC_MSB		0x0a
-#define IO_NAND_ECC_COL		0x0b
-#define IO_NAND_LAC		0x0c
-
-#define CS_NAND_CTL_DIST_EN	(1<<4)	/* Enable NAND Distract interrupt */
-#define CS_NAND_CTL_RDY_INT_MASK	(1<<3)	/* Enable RDY/BUSY# interrupt */
-#define CS_NAND_CTL_ALE		(1<<2)
-#define CS_NAND_CTL_CLE		(1<<1)
-#define CS_NAND_CTL_CE		(1<<0)	/* Keep low; 1 to reset */
-
-#define CS_NAND_STS_FLASH_RDY	(1<<3)
-#define CS_NAND_CTLR_BUSY	(1<<2)
-#define CS_NAND_CMD_COMP	(1<<1)
-#define CS_NAND_DIST_ST		(1<<0)
-
-#define CS_NAND_ECC_PARITY	(1<<2)
-#define CS_NAND_ECC_CLRECC	(1<<1)
-#define CS_NAND_ECC_ENECC	(1<<0)
-
-static void cs553x_read_buf(struct mtd_info *mtd, u_char *buf, int len)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-
-	while (unlikely(len > 0x800)) {
-		memcpy_fromio(buf, this->IO_ADDR_R, 0x800);
-		buf += 0x800;
-		len -= 0x800;
-	}
-	memcpy_fromio(buf, this->IO_ADDR_R, len);
-}
-
-static void cs553x_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-
-	while (unlikely(len > 0x800)) {
-		memcpy_toio(this->IO_ADDR_R, buf, 0x800);
-		buf += 0x800;
-		len -= 0x800;
-	}
-	memcpy_toio(this->IO_ADDR_R, buf, len);
-}
-
-static unsigned char cs553x_read_byte(struct mtd_info *mtd)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-	return readb(this->IO_ADDR_R);
-}
-
-static void cs553x_write_byte(struct mtd_info *mtd, u_char byte)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-	int i = 100000;
-
-	while (i && readb(this->IO_ADDR_R + MM_NAND_STS) & CS_NAND_CTLR_BUSY) {
-		udelay(1);
-		i--;
-	}
-	writeb(byte, this->IO_ADDR_W + 0x801);
-}
-
-static void cs553x_hwcontrol(struct mtd_info *mtd, int cmd,
-			     unsigned int ctrl)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-	void __iomem *mmio_base = this->IO_ADDR_R;
-	if (ctrl & NAND_CTRL_CHANGE) {
-		unsigned char ctl = (ctrl & ~NAND_CTRL_CHANGE ) ^ 0x01;
-		writeb(ctl, mmio_base + MM_NAND_CTL);
-	}
-	if (cmd != NAND_CMD_NONE)
-		cs553x_write_byte(mtd, cmd);
-}
-
-static int cs553x_device_ready(struct mtd_info *mtd)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-	void __iomem *mmio_base = this->IO_ADDR_R;
-	unsigned char foo = readb(mmio_base + MM_NAND_STS);
-
-	return (foo & CS_NAND_STS_FLASH_RDY) && !(foo & CS_NAND_CTLR_BUSY);
-}
-
-static void cs_enable_hwecc(struct mtd_info *mtd, int mode)
-{
-	struct nand_chip *this = mtd_to_nand(mtd);
-	void __iomem *mmio_base = this->IO_ADDR_R;
-
-	writeb(0x07, mmio_base + MM_NAND_ECC_CTL);
-}
-
-static int cs_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
-{
-	uint32_t ecc;
-	struct nand_chip *this = mtd_to_nand(mtd);
-	void __iomem *mmio_base = this->IO_ADDR_R;
-
-	ecc = readl(mmio_base + MM_NAND_STS);
-
-	ecc_code[1] = ecc >> 8;
-	ecc_code[0] = ecc >> 16;
-	ecc_code[2] = ecc >> 24;
-	return 0;
-}
-
-static struct mtd_info *cs553x_mtd[4];
-
-static int __init cs553x_init_one(int cs, int mmio, unsigned long adr)
-{
-	int err = 0;
-	struct nand_chip *this;
-	struct mtd_info *new_mtd;
-
-	printk(KERN_NOTICE "Probing CS553x NAND controller CS#%d at %sIO 0x%08lx\n", cs, mmio?"MM":"P", adr);
-
-	if (!mmio) {
-		printk(KERN_NOTICE "PIO mode not yet implemented for CS553X NAND controller\n");
-		return -ENXIO;
-	}
-
-	/* Allocate memory for MTD device structure and private data */
-	this = kzalloc(sizeof(struct nand_chip), GFP_KERNEL);
-	if (!this) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	new_mtd = nand_to_mtd(this);
-
-	/* Link the private data with the MTD structure */
-	new_mtd->owner = THIS_MODULE;
-
-	/* map physical address */
-	this->IO_ADDR_R = this->IO_ADDR_W = ioremap(adr, 4096);
-	if (!this->IO_ADDR_R) {
-		printk(KERN_WARNING "ioremap cs553x NAND @0x%08lx failed\n", adr);
-		err = -EIO;
-		goto out_mtd;
-	}
-
-	this->cmd_ctrl = cs553x_hwcontrol;
-	this->dev_ready = cs553x_device_ready;
-	this->read_byte = cs553x_read_byte;
-	this->read_buf = cs553x_read_buf;
-	this->write_buf = cs553x_write_buf;
-
-	this->chip_delay = 0;
-
-	this->ecc.mode = NAND_ECC_HW;
-	this->ecc.size = 256;
-	this->ecc.bytes = 3;
-	this->ecc.hwctl  = cs_enable_hwecc;
-	this->ecc.calculate = cs_calculate_ecc;
-	this->ecc.correct  = nand_correct_data;
-	this->ecc.strength = 1;
-
-	/* Enable the following for a flash based bad block table */
-	this->bbt_options = NAND_BBT_USE_FLASH;
-
-	new_mtd->name = kasprintf(GFP_KERNEL, "cs553x_nand_cs%d", cs);
-	if (!new_mtd->name) {
-		err = -ENOMEM;
-		goto out_ior;
-	}
-
-	/* Scan to find existence of the device */
-	err = nand_scan(new_mtd, 1);
-	if (err)
-		goto out_free;
-
-	cs553x_mtd[cs] = new_mtd;
-	goto out;
-
-out_free:
-	kfree(new_mtd->name);
-out_ior:
-	iounmap(this->IO_ADDR_R);
-out_mtd:
-	kfree(this);
-out:
-	return err;
-}
-
-static int is_geode(void)
-{
-	/* These are the CPUs which will have a CS553[56] companion chip */
-	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
-	    boot_cpu_data.x86 == 5 &&
-	    boot_cpu_data.x86_model == 10)
-		return 1; /* Geode LX */
-
-	if ((boot_cpu_data.x86_vendor == X86_VENDOR_NSC ||
-	     boot_cpu_data.x86_vendor == X86_VENDOR_CYRIX) &&
-	    boot_cpu_data.x86 == 5 &&
-	    boot_cpu_data.x86_model == 5)
-		return 1; /* Geode GX (née GX2) */
-
-	return 0;
-}
-
-static int __init cs553x_init(void)
-{
-	int err = -ENXIO;
-	int i;
-	uint64_t val;
-
-	/* If the CPU isn't a Geode GX or LX, abort */
-	if (!is_geode())
-		return -ENXIO;
-
-	/* If it doesn't have the CS553[56], abort */
-	rdmsrl(MSR_DIVIL_GLD_CAP, val);
-	val &= ~0xFFULL;
-	if (val != CAP_CS5535 && val != CAP_CS5536)
-		return -ENXIO;
-
-	/* If it doesn't have the NAND controller enabled, abort */
-	rdmsrl(MSR_DIVIL_BALL_OPTS, val);
-	if (val & PIN_OPT_IDE) {
-		printk(KERN_INFO "CS553x NAND controller: Flash I/O not enabled in MSR_DIVIL_BALL_OPTS.\n");
-		return -ENXIO;
-	}
-
-	for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
-		rdmsrl(MSR_DIVIL_LBAR_FLSH0 + i, val);
-
-		if ((val & (FLSH_LBAR_EN|FLSH_NOR_NAND)) == (FLSH_LBAR_EN|FLSH_NOR_NAND))
-			err = cs553x_init_one(i, !!(val & FLSH_MEM_IO), val & 0xFFFFFFFF);
-	}
-
-	/* Register all devices together here. This means we can easily hack it to
-	   do mtdconcat etc. if we want to. */
-	for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
-		if (cs553x_mtd[i]) {
-			/* If any devices registered, return success. Else the last error. */
-			mtd_device_parse_register(cs553x_mtd[i], NULL, NULL,
-						  NULL, 0);
-			err = 0;
-		}
-	}
-
-	return err;
-}
-
-module_init(cs553x_init);
-
-static void __exit cs553x_cleanup(void)
-{
-	int i;
-
-	for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
-		struct mtd_info *mtd = cs553x_mtd[i];
-		struct nand_chip *this;
-		void __iomem *mmio_base;
-
-		if (!mtd)
-			continue;
-
-		this = mtd_to_nand(mtd);
-		mmio_base = this->IO_ADDR_R;
-
-		/* Release resources, unregister device */
-		nand_release(mtd);
-		kfree(mtd->name);
-		cs553x_mtd[i] = NULL;
-
-		/* unmap physical address */
-		iounmap(mmio_base);
-
-		/* Free the MTD device structure */
-		kfree(this);
-	}
-}
-
-module_exit(cs553x_cleanup);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
-MODULE_DESCRIPTION("NAND controller driver for AMD CS5535/CS5536 companion chip");