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
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/pci.h>
20 #define DENALI_NAND_NAME "denali-nand-pci"
22 /* List of platforms this NAND controller has be integrated into */
23 static const struct pci_device_id denali_pci_ids[] = {
24 { PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },
25 { PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },
26 { /* end: all zeroes */ }
28 MODULE_DEVICE_TABLE(pci, denali_pci_ids);
30 NAND_ECC_CAPS_SINGLE(denali_pci_ecc_caps, denali_calc_ecc_bytes, 512, 8, 15);
32 static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
35 resource_size_t csr_base, mem_base;
36 unsigned long csr_len, mem_len;
37 struct denali_nand_info *denali;
39 denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);
43 ret = pcim_enable_device(dev);
45 dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n");
49 if (id->driver_data == INTEL_CE4100) {
50 denali->platform = INTEL_CE4100;
51 mem_base = pci_resource_start(dev, 0);
52 mem_len = pci_resource_len(dev, 1);
53 csr_base = pci_resource_start(dev, 1);
54 csr_len = pci_resource_len(dev, 1);
56 denali->platform = INTEL_MRST;
57 csr_base = pci_resource_start(dev, 0);
58 csr_len = pci_resource_len(dev, 0);
59 mem_base = pci_resource_start(dev, 1);
60 mem_len = pci_resource_len(dev, 1);
62 mem_base = csr_base + csr_len;
68 denali->dev = &dev->dev;
69 denali->irq = dev->irq;
70 denali->ecc_caps = &denali_pci_ecc_caps;
71 denali->nand.ecc.options |= NAND_ECC_MAXIMIZE;
73 ret = pci_request_regions(dev, DENALI_NAND_NAME);
75 dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");
79 denali->flash_reg = ioremap_nocache(csr_base, csr_len);
80 if (!denali->flash_reg) {
81 dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");
85 denali->flash_mem = ioremap_nocache(mem_base, mem_len);
86 if (!denali->flash_mem) {
87 dev_err(&dev->dev, "Spectra: ioremap_nocache failed!");
89 goto failed_remap_reg;
92 ret = denali_init(denali);
94 goto failed_remap_mem;
96 pci_set_drvdata(dev, denali);
101 iounmap(denali->flash_mem);
103 iounmap(denali->flash_reg);
107 /* driver exit point */
108 static void denali_pci_remove(struct pci_dev *dev)
110 struct denali_nand_info *denali = pci_get_drvdata(dev);
112 denali_remove(denali);
113 iounmap(denali->flash_reg);
114 iounmap(denali->flash_mem);
117 static struct pci_driver denali_pci_driver = {
118 .name = DENALI_NAND_NAME,
119 .id_table = denali_pci_ids,
120 .probe = denali_pci_probe,
121 .remove = denali_pci_remove,
124 module_pci_driver(denali_pci_driver);