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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> | |
17 | #include <linux/slab.h> | |
18 | ||
19 | #include "denali.h" | |
20 | ||
21 | #define DENALI_NAND_NAME "denali-nand-pci" | |
22 | ||
23 | /* List of platforms this NAND controller has be integrated into */ | |
24 | static DEFINE_PCI_DEVICE_TABLE(denali_pci_ids) = { | |
25 | { PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 }, | |
26 | { PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST }, | |
27 | { /* end: all zeroes */ } | |
28 | }; | |
29 | MODULE_DEVICE_TABLE(pci, denali_pci_ids); | |
30 | ||
31 | static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) | |
32 | { | |
33 | int ret = -ENODEV; | |
34 | resource_size_t csr_base, mem_base; | |
35 | unsigned long csr_len, mem_len; | |
36 | struct denali_nand_info *denali; | |
37 | ||
38 | denali = kzalloc(sizeof(*denali), GFP_KERNEL); | |
39 | if (!denali) | |
40 | return -ENOMEM; | |
41 | ||
42 | ret = pci_enable_device(dev); | |
43 | if (ret) { | |
44 | pr_err("Spectra: pci_enable_device failed.\n"); | |
45 | goto failed_alloc_memery; | |
46 | } | |
47 | ||
48 | if (id->driver_data == INTEL_CE4100) { | |
49 | denali->platform = INTEL_CE4100; | |
50 | mem_base = pci_resource_start(dev, 0); | |
51 | mem_len = pci_resource_len(dev, 1); | |
52 | csr_base = pci_resource_start(dev, 1); | |
53 | csr_len = pci_resource_len(dev, 1); | |
54 | } else { | |
55 | denali->platform = INTEL_MRST; | |
56 | csr_base = pci_resource_start(dev, 0); | |
57 | csr_len = pci_resource_len(dev, 0); | |
58 | mem_base = pci_resource_start(dev, 1); | |
59 | mem_len = pci_resource_len(dev, 1); | |
60 | if (!mem_len) { | |
61 | mem_base = csr_base + csr_len; | |
62 | mem_len = csr_len; | |
63 | } | |
64 | } | |
65 | ||
66 | pci_set_master(dev); | |
67 | denali->dev = &dev->dev; | |
68 | denali->irq = dev->irq; | |
69 | ||
70 | ret = pci_request_regions(dev, DENALI_NAND_NAME); | |
71 | if (ret) { | |
72 | pr_err("Spectra: Unable to request memory regions\n"); | |
73 | goto failed_enable_dev; | |
74 | } | |
75 | ||
76 | denali->flash_reg = ioremap_nocache(csr_base, csr_len); | |
77 | if (!denali->flash_reg) { | |
78 | pr_err("Spectra: Unable to remap memory region\n"); | |
79 | ret = -ENOMEM; | |
80 | goto failed_req_regions; | |
81 | } | |
82 | ||
83 | denali->flash_mem = ioremap_nocache(mem_base, mem_len); | |
84 | if (!denali->flash_mem) { | |
85 | pr_err("Spectra: ioremap_nocache failed!"); | |
86 | ret = -ENOMEM; | |
87 | goto failed_remap_reg; | |
88 | } | |
89 | ||
90 | ret = denali_init(denali); | |
91 | if (ret) | |
92 | goto failed_remap_mem; | |
93 | ||
94 | pci_set_drvdata(dev, denali); | |
95 | ||
96 | return 0; | |
97 | ||
98 | failed_remap_mem: | |
99 | iounmap(denali->flash_mem); | |
100 | failed_remap_reg: | |
101 | iounmap(denali->flash_reg); | |
102 | failed_req_regions: | |
103 | pci_release_regions(dev); | |
104 | failed_enable_dev: | |
105 | pci_disable_device(dev); | |
106 | failed_alloc_memery: | |
107 | kfree(denali); | |
108 | ||
109 | return ret; | |
110 | } | |
111 | ||
112 | /* driver exit point */ | |
113 | static void denali_pci_remove(struct pci_dev *dev) | |
114 | { | |
115 | struct denali_nand_info *denali = pci_get_drvdata(dev); | |
116 | ||
117 | denali_remove(denali); | |
118 | iounmap(denali->flash_reg); | |
119 | iounmap(denali->flash_mem); | |
120 | pci_release_regions(dev); | |
121 | pci_disable_device(dev); | |
122 | pci_set_drvdata(dev, NULL); | |
123 | kfree(denali); | |
124 | } | |
125 | ||
126 | static struct pci_driver denali_pci_driver = { | |
127 | .name = DENALI_NAND_NAME, | |
128 | .id_table = denali_pci_ids, | |
129 | .probe = denali_pci_probe, | |
130 | .remove = denali_pci_remove, | |
131 | }; | |
132 | ||
06f25510 | 133 | static int denali_init_pci(void) |
2a0a288e DN |
134 | { |
135 | pr_info("Spectra MTD driver built on %s @ %s\n", __DATE__, __TIME__); | |
136 | return pci_register_driver(&denali_pci_driver); | |
137 | } | |
138 | module_init(denali_init_pci); | |
139 | ||
810b7e06 | 140 | static void denali_exit_pci(void) |
2a0a288e DN |
141 | { |
142 | pci_unregister_driver(&denali_pci_driver); | |
143 | } | |
144 | module_exit(denali_exit_pci); |