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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 */ | |
94f7039a | 24 | static const struct pci_device_id denali_pci_ids[] = { |
2a0a288e DN |
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 | { | |
add243d5 | 33 | int ret; |
2a0a288e DN |
34 | resource_size_t csr_base, mem_base; |
35 | unsigned long csr_len, mem_len; | |
36 | struct denali_nand_info *denali; | |
37 | ||
add243d5 | 38 | denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL); |
2a0a288e DN |
39 | if (!denali) |
40 | return -ENOMEM; | |
41 | ||
add243d5 | 42 | ret = pcim_enable_device(dev); |
2a0a288e | 43 | if (ret) { |
af83a67c | 44 | dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n"); |
add243d5 | 45 | return ret; |
2a0a288e DN |
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) { | |
af83a67c | 72 | dev_err(&dev->dev, "Spectra: Unable to request memory regions\n"); |
add243d5 | 73 | return ret; |
2a0a288e DN |
74 | } |
75 | ||
76 | denali->flash_reg = ioremap_nocache(csr_base, csr_len); | |
77 | if (!denali->flash_reg) { | |
af83a67c | 78 | dev_err(&dev->dev, "Spectra: Unable to remap memory region\n"); |
add243d5 | 79 | return -ENOMEM; |
2a0a288e DN |
80 | } |
81 | ||
82 | denali->flash_mem = ioremap_nocache(mem_base, mem_len); | |
83 | if (!denali->flash_mem) { | |
af83a67c | 84 | dev_err(&dev->dev, "Spectra: ioremap_nocache failed!"); |
2a0a288e DN |
85 | ret = -ENOMEM; |
86 | goto failed_remap_reg; | |
87 | } | |
88 | ||
89 | ret = denali_init(denali); | |
90 | if (ret) | |
91 | goto failed_remap_mem; | |
92 | ||
93 | pci_set_drvdata(dev, denali); | |
94 | ||
95 | return 0; | |
96 | ||
97 | failed_remap_mem: | |
98 | iounmap(denali->flash_mem); | |
99 | failed_remap_reg: | |
100 | iounmap(denali->flash_reg); | |
2a0a288e DN |
101 | return ret; |
102 | } | |
103 | ||
104 | /* driver exit point */ | |
105 | static void denali_pci_remove(struct pci_dev *dev) | |
106 | { | |
107 | struct denali_nand_info *denali = pci_get_drvdata(dev); | |
108 | ||
109 | denali_remove(denali); | |
110 | iounmap(denali->flash_reg); | |
111 | iounmap(denali->flash_mem); | |
2a0a288e DN |
112 | } |
113 | ||
114 | static struct pci_driver denali_pci_driver = { | |
115 | .name = DENALI_NAND_NAME, | |
116 | .id_table = denali_pci_ids, | |
117 | .probe = denali_pci_probe, | |
118 | .remove = denali_pci_remove, | |
119 | }; | |
120 | ||
2445d33d | 121 | module_pci_driver(denali_pci_driver); |