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110 lines
3.5 KiB
110 lines
3.5 KiB
/* |
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* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights |
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* reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the NetLogic |
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* license below: |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <linux/init.h> |
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#include <asm/time.h> |
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#include <asm/cpu-features.h> |
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#include <asm/netlogic/interrupt.h> |
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#include <asm/netlogic/common.h> |
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#include <asm/netlogic/haldefs.h> |
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#if defined(CONFIG_CPU_XLP) |
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#include <asm/netlogic/xlp-hal/iomap.h> |
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#include <asm/netlogic/xlp-hal/xlp.h> |
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#include <asm/netlogic/xlp-hal/sys.h> |
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#include <asm/netlogic/xlp-hal/pic.h> |
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#elif defined(CONFIG_CPU_XLR) |
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#include <asm/netlogic/xlr/iomap.h> |
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#include <asm/netlogic/xlr/pic.h> |
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#include <asm/netlogic/xlr/xlr.h> |
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#else |
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#error "Unknown CPU" |
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#endif |
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unsigned int get_c0_compare_int(void) |
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{ |
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return IRQ_TIMER; |
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} |
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static u64 nlm_get_pic_timer(struct clocksource *cs) |
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{ |
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uint64_t picbase = nlm_get_node(0)->picbase; |
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return ~nlm_pic_read_timer(picbase, PIC_CLOCK_TIMER); |
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} |
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static u64 nlm_get_pic_timer32(struct clocksource *cs) |
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{ |
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uint64_t picbase = nlm_get_node(0)->picbase; |
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return ~nlm_pic_read_timer32(picbase, PIC_CLOCK_TIMER); |
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} |
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static struct clocksource csrc_pic = { |
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.name = "PIC", |
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.flags = CLOCK_SOURCE_IS_CONTINUOUS, |
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}; |
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static void nlm_init_pic_timer(void) |
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{ |
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uint64_t picbase = nlm_get_node(0)->picbase; |
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u32 picfreq; |
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nlm_pic_set_timer(picbase, PIC_CLOCK_TIMER, ~0ULL, 0, 0); |
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if (current_cpu_data.cputype == CPU_XLR) { |
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csrc_pic.mask = CLOCKSOURCE_MASK(32); |
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csrc_pic.read = nlm_get_pic_timer32; |
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} else { |
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csrc_pic.mask = CLOCKSOURCE_MASK(64); |
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csrc_pic.read = nlm_get_pic_timer; |
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} |
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csrc_pic.rating = 1000; |
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picfreq = pic_timer_freq(); |
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clocksource_register_hz(&csrc_pic, picfreq); |
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pr_info("PIC clock source added, frequency %d\n", picfreq); |
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} |
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void __init plat_time_init(void) |
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{ |
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nlm_init_pic_timer(); |
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mips_hpt_frequency = nlm_get_cpu_frequency(); |
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if (current_cpu_type() == CPU_XLR) |
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preset_lpj = mips_hpt_frequency / (3 * HZ); |
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else |
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preset_lpj = mips_hpt_frequency / (2 * HZ); |
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pr_info("MIPS counter frequency [%ld]\n", |
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(unsigned long)mips_hpt_frequency); |
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}
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