0f9c776713
Log readl/writel accesses in the small uncached buffer. readl/writel are typically used for reading from memory mapped registers, which can cause hangs if accessed unclocked. Log this information in a buffer to aid in debugging. Change-Id: Id72da6b028a3faf5d0d8e069e14d90e4671e3564 Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* arch/arm/mach-msm/include/mach/uncompress.h
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*
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* Copyright (C) 2007 Google, Inc.
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* Copyright (c) 2012, Code Aurora Forum. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ASM_ARCH_MSM_UNCOMPRESS_H
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#define __ASM_ARCH_MSM_UNCOMPRESS_H
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#include <linux/io.h>
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#include <asm/mach-types.h>
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#include <asm/processor.h>
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#include <mach/msm_iomap.h>
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#include <mach/msm_serial_hsl_regs.h>
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#ifndef CONFIG_DEBUG_ICEDCC
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static void putc(int c)
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{
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#if defined(MSM_DEBUG_UART_PHYS)
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unsigned long base = MSM_DEBUG_UART_PHYS;
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#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
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/*
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* Wait for TX_READY to be set; but skip it if we have a
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* TX underrun.
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*/
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if (!(__raw_readl_no_log(base + UARTDM_SR_OFFSET) & 0x08))
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while (!(__raw_readl_no_log(base + UARTDM_ISR_OFFSET) & 0x80))
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cpu_relax();
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__raw_writel_no_log(0x300, base + UARTDM_CR_OFFSET);
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__raw_writel_no_log(0x1, base + UARTDM_NCF_TX_OFFSET);
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__raw_writel_no_log(c, base + UARTDM_TF_OFFSET);
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#else
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/* Wait for TX_READY to be set */
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while (!(__raw_readl_no_log(base + 0x08) & 0x04))
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cpu_relax();
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__raw_writel_no_log(c, base + 0x0c);
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#endif
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#endif
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}
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#endif
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static inline void flush(void)
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{
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}
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static inline void arch_decomp_setup(void)
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{
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}
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static inline void arch_decomp_wdog(void)
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{
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}
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#endif
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