2 * NAND Flash Controller Device Driver
3 * Copyright © 2009-2010, Intel Corporation and its suppliers.
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.
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
15 #include <linux/errno.h>
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
23 #define DENALI_NAND_NAME "denali-nand-pci"
25 #define INTEL_CE4100 1
28 /* List of platforms this NAND controller has be integrated into */
29 static const struct pci_device_id denali_pci_ids[] = {
30 { PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },
31 { PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },
32 { /* end: all zeroes */ }
34 MODULE_DEVICE_TABLE(pci, denali_pci_ids);
36 NAND_ECC_CAPS_SINGLE(denali_pci_ecc_caps, denali_calc_ecc_bytes, 512, 8, 15);
38 static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
41 resource_size_t csr_base, mem_base;
42 unsigned long csr_len, mem_len;
43 struct denali_nand_info *denali;
45 denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);
49 ret = pcim_enable_device(dev);
51 dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n");
55 if (id->driver_data == INTEL_CE4100) {
56 mem_base = pci_resource_start(dev, 0);
57 mem_len = pci_resource_len(dev, 1);
58 csr_base = pci_resource_start(dev, 1);
59 csr_len = pci_resource_len(dev, 1);
61 csr_base = pci_resource_start(dev, 0);
62 csr_len = pci_resource_len(dev, 0);
63 mem_base = pci_resource_start(dev, 1);
64 mem_len = pci_resource_len(dev, 1);
66 mem_base = csr_base + csr_len;
72 denali->dev = &dev->dev;
73 denali->irq = dev->irq;
74 denali->ecc_caps = &denali_pci_ecc_caps;
75 denali->nand.ecc.options |= NAND_ECC_MAXIMIZE;
76 denali->clk_x_rate = 200000000; /* 200 MHz */
78 ret = pci_request_regions(dev, DENALI_NAND_NAME);
80 dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");
84 denali->reg = ioremap_nocache(csr_base, csr_len);
86 dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");
90 denali->host = ioremap_nocache(mem_base, mem_len);
92 dev_err(&dev->dev, "Spectra: ioremap_nocache failed!");
94 goto failed_remap_reg;
97 ret = denali_init(denali);
99 goto failed_remap_mem;
101 pci_set_drvdata(dev, denali);
106 iounmap(denali->host);
108 iounmap(denali->reg);
112 static void denali_pci_remove(struct pci_dev *dev)
114 struct denali_nand_info *denali = pci_get_drvdata(dev);
116 denali_remove(denali);
117 iounmap(denali->reg);
118 iounmap(denali->host);
121 static struct pci_driver denali_pci_driver = {
122 .name = DENALI_NAND_NAME,
123 .id_table = denali_pci_ids,
124 .probe = denali_pci_probe,
125 .remove = denali_pci_remove,
127 module_pci_driver(denali_pci_driver);