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91 lines
2.0 KiB
91 lines
2.0 KiB
/* |
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* Copyright 2012 Tilera Corporation. All Rights Reserved. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation, version 2. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
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* NON INFRINGEMENT. See the GNU General Public License for |
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* more details. |
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*/ |
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/* |
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* |
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* Implementation of USB gxio calls. |
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*/ |
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#include <linux/io.h> |
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#include <linux/errno.h> |
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#include <linux/module.h> |
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#include <gxio/iorpc_globals.h> |
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#include <gxio/iorpc_usb_host.h> |
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#include <gxio/kiorpc.h> |
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#include <gxio/usb_host.h> |
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int gxio_usb_host_init(gxio_usb_host_context_t *context, int usb_index, |
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int is_ehci) |
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{ |
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char file[32]; |
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int fd; |
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if (is_ehci) |
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snprintf(file, sizeof(file), "usb_host/%d/iorpc/ehci", |
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usb_index); |
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else |
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snprintf(file, sizeof(file), "usb_host/%d/iorpc/ohci", |
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usb_index); |
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fd = hv_dev_open((HV_VirtAddr) file, 0); |
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if (fd < 0) { |
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if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX) |
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return fd; |
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else |
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return -ENODEV; |
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} |
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context->fd = fd; |
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// Map in the MMIO space. |
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context->mmio_base = |
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(void __force *)iorpc_ioremap(fd, 0, HV_USB_HOST_MMIO_SIZE); |
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if (context->mmio_base == NULL) { |
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hv_dev_close(context->fd); |
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return -ENODEV; |
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} |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(gxio_usb_host_init); |
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int gxio_usb_host_destroy(gxio_usb_host_context_t *context) |
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{ |
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iounmap((void __force __iomem *)(context->mmio_base)); |
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hv_dev_close(context->fd); |
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context->mmio_base = NULL; |
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context->fd = -1; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(gxio_usb_host_destroy); |
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void *gxio_usb_host_get_reg_start(gxio_usb_host_context_t *context) |
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{ |
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return context->mmio_base; |
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} |
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EXPORT_SYMBOL_GPL(gxio_usb_host_get_reg_start); |
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size_t gxio_usb_host_get_reg_len(gxio_usb_host_context_t *context) |
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{ |
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return HV_USB_HOST_MMIO_SIZE; |
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} |
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EXPORT_SYMBOL_GPL(gxio_usb_host_get_reg_len);
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