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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/tile/gxio/trio.c |
Initial import
Diffstat (limited to 'arch/tile/gxio/trio.c')
-rw-r--r-- | arch/tile/gxio/trio.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/tile/gxio/trio.c b/arch/tile/gxio/trio.c new file mode 100644 index 000000000..69f0b8df3 --- /dev/null +++ b/arch/tile/gxio/trio.c @@ -0,0 +1,49 @@ +/* + * Copyright 2012 Tilera Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +/* + * Implementation of trio gxio calls. + */ + +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/module.h> + +#include <gxio/trio.h> +#include <gxio/iorpc_globals.h> +#include <gxio/iorpc_trio.h> +#include <gxio/kiorpc.h> + +int gxio_trio_init(gxio_trio_context_t *context, unsigned int trio_index) +{ + char file[32]; + int fd; + + snprintf(file, sizeof(file), "trio/%d/iorpc", trio_index); + fd = hv_dev_open((HV_VirtAddr) file, 0); + if (fd < 0) { + context->fd = -1; + + if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX) + return fd; + else + return -ENODEV; + } + + context->fd = fd; + + return 0; +} + +EXPORT_SYMBOL_GPL(gxio_trio_init); |