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d1cc1732 CM |
1 | /* |
2 | * Copyright 2012 Tilera Corporation. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation, version 2. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
11 | * NON INFRINGEMENT. See the GNU General Public License for | |
12 | * more details. | |
13 | */ | |
14 | ||
15 | /* | |
16 | * | |
17 | * Implementation of USB gxio calls. | |
18 | */ | |
19 | ||
20 | #include <linux/io.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/module.h> | |
23 | ||
24 | #include <gxio/iorpc_globals.h> | |
25 | #include <gxio/iorpc_usb_host.h> | |
26 | #include <gxio/kiorpc.h> | |
27 | #include <gxio/usb_host.h> | |
28 | ||
126eb088 | 29 | int gxio_usb_host_init(gxio_usb_host_context_t *context, int usb_index, |
d1cc1732 CM |
30 | int is_ehci) |
31 | { | |
32 | char file[32]; | |
33 | int fd; | |
34 | ||
35 | if (is_ehci) | |
36 | snprintf(file, sizeof(file), "usb_host/%d/iorpc/ehci", | |
37 | usb_index); | |
38 | else | |
39 | snprintf(file, sizeof(file), "usb_host/%d/iorpc/ohci", | |
40 | usb_index); | |
41 | ||
42 | fd = hv_dev_open((HV_VirtAddr) file, 0); | |
43 | if (fd < 0) { | |
44 | if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX) | |
45 | return fd; | |
46 | else | |
47 | return -ENODEV; | |
48 | } | |
49 | ||
50 | context->fd = fd; | |
51 | ||
52 | // Map in the MMIO space. | |
53 | context->mmio_base = | |
54 | (void __force *)iorpc_ioremap(fd, 0, HV_USB_HOST_MMIO_SIZE); | |
55 | ||
56 | if (context->mmio_base == NULL) { | |
57 | hv_dev_close(context->fd); | |
58 | return -ENODEV; | |
59 | } | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | EXPORT_SYMBOL_GPL(gxio_usb_host_init); | |
65 | ||
126eb088 | 66 | int gxio_usb_host_destroy(gxio_usb_host_context_t *context) |
d1cc1732 CM |
67 | { |
68 | iounmap((void __force __iomem *)(context->mmio_base)); | |
69 | hv_dev_close(context->fd); | |
70 | ||
71 | context->mmio_base = NULL; | |
72 | context->fd = -1; | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
77 | EXPORT_SYMBOL_GPL(gxio_usb_host_destroy); | |
78 | ||
126eb088 | 79 | void *gxio_usb_host_get_reg_start(gxio_usb_host_context_t *context) |
d1cc1732 CM |
80 | { |
81 | return context->mmio_base; | |
82 | } | |
83 | ||
84 | EXPORT_SYMBOL_GPL(gxio_usb_host_get_reg_start); | |
85 | ||
126eb088 | 86 | size_t gxio_usb_host_get_reg_len(gxio_usb_host_context_t *context) |
d1cc1732 CM |
87 | { |
88 | return HV_USB_HOST_MMIO_SIZE; | |
89 | } | |
90 | ||
91 | EXPORT_SYMBOL_GPL(gxio_usb_host_get_reg_len); |