[mirror_ubuntu-bionic-kernel.git] / drivers / mtd / nand / denali_pci.c

/*
 * NAND Flash Controller Device Driver
 * Copyright © 2009-2010, Intel Corporation and its suppliers.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>

#include "denali.h"

#define DENALI_NAND_NAME    "denali-nand-pci"

/* List of platforms this NAND controller has be integrated into */
static const struct pci_device_id denali_pci_ids[] = {
	{ PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },
	{ PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },
	{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, denali_pci_ids);

static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
	int ret;
	resource_size_t csr_base, mem_base;
	unsigned long csr_len, mem_len;
	struct denali_nand_info *denali;

	denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);
	if (!denali)
		return -ENOMEM;

	ret = pcim_enable_device(dev);
	if (ret) {
		dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n");
		return ret;
	}

	if (id->driver_data == INTEL_CE4100) {
		denali->platform = INTEL_CE4100;
		mem_base = pci_resource_start(dev, 0);
		mem_len = pci_resource_len(dev, 1);
		csr_base = pci_resource_start(dev, 1);
		csr_len = pci_resource_len(dev, 1);
	} else {
		denali->platform = INTEL_MRST;
		csr_base = pci_resource_start(dev, 0);
		csr_len = pci_resource_len(dev, 0);
		mem_base = pci_resource_start(dev, 1);
		mem_len = pci_resource_len(dev, 1);
		if (!mem_len) {
			mem_base = csr_base + csr_len;
			mem_len = csr_len;
		}
	}

	pci_set_master(dev);
	denali->dev = &dev->dev;
	denali->irq = dev->irq;

	ret = pci_request_regions(dev, DENALI_NAND_NAME);
	if (ret) {
		dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");
		return ret;
	}

	denali->flash_reg = ioremap_nocache(csr_base, csr_len);
	if (!denali->flash_reg) {
		dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");
		return -ENOMEM;
	}

	denali->flash_mem = ioremap_nocache(mem_base, mem_len);
	if (!denali->flash_mem) {
		dev_err(&dev->dev, "Spectra: ioremap_nocache failed!");
		ret = -ENOMEM;
		goto failed_remap_reg;
	}

	ret = denali_init(denali);
	if (ret)
		goto failed_remap_mem;

	pci_set_drvdata(dev, denali);

	return 0;

failed_remap_mem:
	iounmap(denali->flash_mem);
failed_remap_reg:
	iounmap(denali->flash_reg);
	return ret;
}

/* driver exit point */
static void denali_pci_remove(struct pci_dev *dev)
{
	struct denali_nand_info *denali = pci_get_drvdata(dev);

	denali_remove(denali);
	iounmap(denali->flash_reg);
	iounmap(denali->flash_mem);
}

static struct pci_driver denali_pci_driver = {
	.name = DENALI_NAND_NAME,
	.id_table = denali_pci_ids,
	.probe = denali_pci_probe,
	.remove = denali_pci_remove,
};

module_pci_driver(denali_pci_driver);
Commit	Line	Data
2a0a288e DN	1	/*
	2	* NAND Flash Controller Device Driver
	3	* Copyright © 2009-2010, Intel Corporation and its suppliers.
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms and conditions of the GNU General Public License,
	7	* version 2, as published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*/
	14	#include <linux/kernel.h>
	15	#include <linux/module.h>
	16	#include <linux/pci.h>
2a0a288e DN	17
	18	#include "denali.h"
	19
	20	#define DENALI_NAND_NAME "denali-nand-pci"
	21
	22	/* List of platforms this NAND controller has be integrated into */
94f7039a	23	static const struct pci_device_id denali_pci_ids[] = {
2a0a288e DN	24	{ PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },
	25	{ PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },
	26	{ /* end: all zeroes */ }
	27	};
	28	MODULE_DEVICE_TABLE(pci, denali_pci_ids);
	29
	30	static int denali_pci_probe(struct pci_dev dev, const struct pci_device_id id)
	31	{
add243d5	32	int ret;
2a0a288e DN	33	resource_size_t csr_base, mem_base;
	34	unsigned long csr_len, mem_len;
	35	struct denali_nand_info *denali;
	36
add243d5	37	denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);
2a0a288e DN	38	if (!denali)
	39	return -ENOMEM;
	40
add243d5	41	ret = pcim_enable_device(dev);
2a0a288e	42	if (ret) {
af83a67c	43	dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n");
add243d5	44	return ret;
2a0a288e DN	45	}
	46
	47	if (id->driver_data == INTEL_CE4100) {
	48	denali->platform = INTEL_CE4100;
	49	mem_base = pci_resource_start(dev, 0);
	50	mem_len = pci_resource_len(dev, 1);
	51	csr_base = pci_resource_start(dev, 1);
	52	csr_len = pci_resource_len(dev, 1);
	53	} else {
	54	denali->platform = INTEL_MRST;
	55	csr_base = pci_resource_start(dev, 0);
	56	csr_len = pci_resource_len(dev, 0);
	57	mem_base = pci_resource_start(dev, 1);
	58	mem_len = pci_resource_len(dev, 1);
	59	if (!mem_len) {
	60	mem_base = csr_base + csr_len;
	61	mem_len = csr_len;
	62	}
	63	}
	64
	65	pci_set_master(dev);
	66	denali->dev = &dev->dev;
	67	denali->irq = dev->irq;
	68
	69	ret = pci_request_regions(dev, DENALI_NAND_NAME);
	70	if (ret) {
af83a67c	71	dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");
add243d5	72	return ret;
2a0a288e DN	73	}
	74
	75	denali->flash_reg = ioremap_nocache(csr_base, csr_len);
	76	if (!denali->flash_reg) {
af83a67c	77	dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");
add243d5	78	return -ENOMEM;
2a0a288e DN	79	}
	80
	81	denali->flash_mem = ioremap_nocache(mem_base, mem_len);
	82	if (!denali->flash_mem) {
af83a67c	83	dev_err(&dev->dev, "Spectra: ioremap_nocache failed!");
2a0a288e DN	84	ret = -ENOMEM;
	85	goto failed_remap_reg;
	86	}
	87
	88	ret = denali_init(denali);
	89	if (ret)
	90	goto failed_remap_mem;
	91
	92	pci_set_drvdata(dev, denali);
	93
	94	return 0;
	95
	96	failed_remap_mem:
	97	iounmap(denali->flash_mem);
	98	failed_remap_reg:
	99	iounmap(denali->flash_reg);
2a0a288e DN	100	return ret;
	101	}
	102
	103	/* driver exit point */
	104	static void denali_pci_remove(struct pci_dev *dev)
	105	{
	106	struct denali_nand_info *denali = pci_get_drvdata(dev);
	107
	108	denali_remove(denali);
	109	iounmap(denali->flash_reg);
	110	iounmap(denali->flash_mem);
2a0a288e DN	111	}
	112
	113	static struct pci_driver denali_pci_driver = {
	114	.name = DENALI_NAND_NAME,
	115	.id_table = denali_pci_ids,
	116	.probe = denali_pci_probe,
	117	.remove = denali_pci_remove,
	118	};
	119
2445d33d	120	module_pci_driver(denali_pci_driver);