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eb188d0e85
Adds RapidIO enumeration/discovery. The core code implements enumeration/discovery, management of devices/resources, and interfaces for RIO drivers. Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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* RapidIO Tsi500 switch support
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*
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* Copyright 2005 MontaVista Software, Inc.
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* Matt Porter <mporter@kernel.crashing.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/rio.h>
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#include <linux/rio_drv.h>
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#include <linux/rio_ids.h>
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#include "../rio.h"
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static int
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tsi500_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 route_port)
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{
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int i;
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u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);
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u32 result;
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if (table == 0xff) {
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rio_mport_read_config_32(mport, destid, hopcount, offset, &result);
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result &= ~(0xf << (4*(route_destid & 0x7)));
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for (i=0;i<4;i++)
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rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*i), result | (route_port << (4*(route_destid & 0x7))));
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}
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else {
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rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);
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result &= ~(0xf << (4*(route_destid & 0x7)));
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rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*table), result | (route_port << (4*(route_destid & 0x7))));
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}
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return 0;
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}
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static int
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tsi500_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 *route_port)
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{
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int ret = 0;
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u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);
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u32 result;
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if (table == 0xff)
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rio_mport_read_config_32(mport, destid, hopcount, offset, &result);
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else
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rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);
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result &= 0xf << (4*(route_destid & 0x7));
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*route_port = result >> (4*(route_destid & 0x7));
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if (*route_port > 3)
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ret = -1;
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return ret;
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}
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DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_route_add_entry, tsi500_route_get_entry);
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