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linux/include/asm-avr32/ocd.h
Haavard Skinnemoen 13b54a5052 [AVR32] Enable debugging only when needed 
Keep track of processes being debugged (including the kernel itself)
and turn the OCD system on and off as appropriate. Since enabling
debugging turns off some optimizations in the CPU core, this fixes the
issue that enabling KProbes support or simply running a program under
gdbserver will reduce system performance significantly until the next
reboot.

The CPU performance will still be reduced for all processes while a
process is being debugged, but this is a lot better than reducing the
performance forever.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-01-25 08:31:39 +01:00

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/*
* AVR32 OCD Interface and register definitions
*
* Copyright (C) 2004-2007 Atmel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_AVR32_OCD_H
#define __ASM_AVR32_OCD_H
/* OCD Register offsets. Abbreviations used below:
*
* BP Breakpoint
* Comm Communication
* DT Data Trace
* PC Program Counter
* PID Process ID
* R/W Read/Write
* WP Watchpoint
*/
#define OCD_DID 0x0000 /* Device ID */
#define OCD_DC 0x0008 /* Development Control */
#define OCD_DS 0x0010 /* Development Status */
#define OCD_RWCS 0x001c /* R/W Access Control */
#define OCD_RWA 0x0024 /* R/W Access Address */
#define OCD_RWD 0x0028 /* R/W Access Data */
#define OCD_WT 0x002c /* Watchpoint Trigger */
#define OCD_DTC 0x0034 /* Data Trace Control */
#define OCD_DTSA0 0x0038 /* DT Start Addr Channel 0 */
#define OCD_DTSA1 0x003c /* DT Start Addr Channel 1 */
#define OCD_DTEA0 0x0048 /* DT End Addr Channel 0 */
#define OCD_DTEA1 0x004c /* DT End Addr Channel 1 */
#define OCD_BWC0A 0x0058 /* PC BP/WP Control 0A */
#define OCD_BWC0B 0x005c /* PC BP/WP Control 0B */
#define OCD_BWC1A 0x0060 /* PC BP/WP Control 1A */
#define OCD_BWC1B 0x0064 /* PC BP/WP Control 1B */
#define OCD_BWC2A 0x0068 /* PC BP/WP Control 2A */
#define OCD_BWC2B 0x006c /* PC BP/WP Control 2B */
#define OCD_BWC3A 0x0070 /* Data BP/WP Control 3A */
#define OCD_BWC3B 0x0074 /* Data BP/WP Control 3B */
#define OCD_BWA0A 0x0078 /* PC BP/WP Address 0A */
#define OCD_BWA0B 0x007c /* PC BP/WP Address 0B */
#define OCD_BWA1A 0x0080 /* PC BP/WP Address 1A */
#define OCD_BWA1B 0x0084 /* PC BP/WP Address 1B */
#define OCD_BWA2A 0x0088 /* PC BP/WP Address 2A */
#define OCD_BWA2B 0x008c /* PC BP/WP Address 2B */
#define OCD_BWA3A 0x0090 /* Data BP/WP Address 3A */
#define OCD_BWA3B 0x0094 /* Data BP/WP Address 3B */
#define OCD_NXCFG 0x0100 /* Nexus Configuration */
#define OCD_DINST 0x0104 /* Debug Instruction */
#define OCD_DPC 0x0108 /* Debug Program Counter */
#define OCD_CPUCM 0x010c /* CPU Control Mask */
#define OCD_DCCPU 0x0110 /* Debug Comm CPU */
#define OCD_DCEMU 0x0114 /* Debug Comm Emulator */
#define OCD_DCSR 0x0118 /* Debug Comm Status */
#define OCD_PID 0x011c /* Ownership Trace PID */
#define OCD_EPC0 0x0120 /* Event Pair Control 0 */
#define OCD_EPC1 0x0124 /* Event Pair Control 1 */
#define OCD_EPC2 0x0128 /* Event Pair Control 2 */
#define OCD_EPC3 0x012c /* Event Pair Control 3 */
#define OCD_AXC 0x0130 /* AUX port Control */
/* Bits in DID */
#define OCD_DID_MID_START 1
#define OCD_DID_MID_SIZE 11
#define OCD_DID_PN_START 12
#define OCD_DID_PN_SIZE 16
#define OCD_DID_RN_START 28
#define OCD_DID_RN_SIZE 4
/* Bits in DC */
#define OCD_DC_TM_START 0
#define OCD_DC_TM_SIZE 2
#define OCD_DC_EIC_START 3
#define OCD_DC_EIC_SIZE 2
#define OCD_DC_OVC_START 5
#define OCD_DC_OVC_SIZE 3
#define OCD_DC_SS_BIT 8
#define OCD_DC_DBR_BIT 12
#define OCD_DC_DBE_BIT 13
#define OCD_DC_EOS_START 20
#define OCD_DC_EOS_SIZE 2
#define OCD_DC_SQA_BIT 22
#define OCD_DC_IRP_BIT 23
#define OCD_DC_IFM_BIT 24
#define OCD_DC_TOZ_BIT 25
#define OCD_DC_TSR_BIT 26
#define OCD_DC_RID_BIT 27
#define OCD_DC_ORP_BIT 28
#define OCD_DC_MM_BIT 29
#define OCD_DC_RES_BIT 30
#define OCD_DC_ABORT_BIT 31
/* Bits in DS */
#define OCD_DS_SSS_BIT 0
#define OCD_DS_SWB_BIT 1
#define OCD_DS_HWB_BIT 2
#define OCD_DS_HWE_BIT 3
#define OCD_DS_STP_BIT 4
#define OCD_DS_DBS_BIT 5
#define OCD_DS_BP_START 8
#define OCD_DS_BP_SIZE 8
#define OCD_DS_INC_BIT 24
#define OCD_DS_BOZ_BIT 25
#define OCD_DS_DBA_BIT 26
#define OCD_DS_EXB_BIT 27
#define OCD_DS_NTBF_BIT 28
/* Bits in RWCS */
#define OCD_RWCS_DV_BIT 0
#define OCD_RWCS_ERR_BIT 1
#define OCD_RWCS_CNT_START 2
#define OCD_RWCS_CNT_SIZE 14
#define OCD_RWCS_CRC_BIT 19
#define OCD_RWCS_NTBC_START 20
#define OCD_RWCS_NTBC_SIZE 2
#define OCD_RWCS_NTE_BIT 22
#define OCD_RWCS_NTAP_BIT 23
#define OCD_RWCS_WRAPPED_BIT 24
#define OCD_RWCS_CCTRL_START 25
#define OCD_RWCS_CCTRL_SIZE 2
#define OCD_RWCS_SZ_START 27
#define OCD_RWCS_SZ_SIZE 3
#define OCD_RWCS_RW_BIT 30
#define OCD_RWCS_AC_BIT 31
/* Bits in RWA */
#define OCD_RWA_RWA_START 0
#define OCD_RWA_RWA_SIZE 32
/* Bits in RWD */
#define OCD_RWD_RWD_START 0
#define OCD_RWD_RWD_SIZE 32
/* Bits in WT */
#define OCD_WT_DTE_START 20
#define OCD_WT_DTE_SIZE 3
#define OCD_WT_DTS_START 23
#define OCD_WT_DTS_SIZE 3
#define OCD_WT_PTE_START 26
#define OCD_WT_PTE_SIZE 3
#define OCD_WT_PTS_START 29
#define OCD_WT_PTS_SIZE 3
/* Bits in DTC */
#define OCD_DTC_T0WP_BIT 0
#define OCD_DTC_T1WP_BIT 1
#define OCD_DTC_ASID0EN_BIT 2
#define OCD_DTC_ASID0_START 3
#define OCD_DTC_ASID0_SIZE 8
#define OCD_DTC_ASID1EN_BIT 11
#define OCD_DTC_ASID1_START 12
#define OCD_DTC_ASID1_SIZE 8
#define OCD_DTC_RWT1_START 28
#define OCD_DTC_RWT1_SIZE 2
#define OCD_DTC_RWT0_START 30
#define OCD_DTC_RWT0_SIZE 2
/* Bits in DTSA0 */
#define OCD_DTSA0_DTSA_START 0
#define OCD_DTSA0_DTSA_SIZE 32
/* Bits in DTSA1 */
#define OCD_DTSA1_DTSA_START 0
#define OCD_DTSA1_DTSA_SIZE 32
/* Bits in DTEA0 */
#define OCD_DTEA0_DTEA_START 0
#define OCD_DTEA0_DTEA_SIZE 32
/* Bits in DTEA1 */
#define OCD_DTEA1_DTEA_START 0
#define OCD_DTEA1_DTEA_SIZE 32
/* Bits in BWC0A */
#define OCD_BWC0A_ASIDEN_BIT 0
#define OCD_BWC0A_ASID_START 1
#define OCD_BWC0A_ASID_SIZE 8
#define OCD_BWC0A_EOC_BIT 14
#define OCD_BWC0A_AME_BIT 25
#define OCD_BWC0A_BWE_START 30
#define OCD_BWC0A_BWE_SIZE 2
/* Bits in BWC0B */
#define OCD_BWC0B_ASIDEN_BIT 0
#define OCD_BWC0B_ASID_START 1
#define OCD_BWC0B_ASID_SIZE 8
#define OCD_BWC0B_EOC_BIT 14
#define OCD_BWC0B_AME_BIT 25
#define OCD_BWC0B_BWE_START 30
#define OCD_BWC0B_BWE_SIZE 2
/* Bits in BWC1A */
#define OCD_BWC1A_ASIDEN_BIT 0
#define OCD_BWC1A_ASID_START 1
#define OCD_BWC1A_ASID_SIZE 8
#define OCD_BWC1A_EOC_BIT 14
#define OCD_BWC1A_AME_BIT 25
#define OCD_BWC1A_BWE_START 30
#define OCD_BWC1A_BWE_SIZE 2
/* Bits in BWC1B */
#define OCD_BWC1B_ASIDEN_BIT 0
#define OCD_BWC1B_ASID_START 1
#define OCD_BWC1B_ASID_SIZE 8
#define OCD_BWC1B_EOC_BIT 14
#define OCD_BWC1B_AME_BIT 25
#define OCD_BWC1B_BWE_START 30
#define OCD_BWC1B_BWE_SIZE 2
/* Bits in BWC2A */
#define OCD_BWC2A_ASIDEN_BIT 0
#define OCD_BWC2A_ASID_START 1
#define OCD_BWC2A_ASID_SIZE 8
#define OCD_BWC2A_EOC_BIT 14
#define OCD_BWC2A_AMB_START 20
#define OCD_BWC2A_AMB_SIZE 5
#define OCD_BWC2A_AME_BIT 25
#define OCD_BWC2A_BWE_START 30
#define OCD_BWC2A_BWE_SIZE 2
/* Bits in BWC2B */
#define OCD_BWC2B_ASIDEN_BIT 0
#define OCD_BWC2B_ASID_START 1
#define OCD_BWC2B_ASID_SIZE 8
#define OCD_BWC2B_EOC_BIT 14
#define OCD_BWC2B_AME_BIT 25
#define OCD_BWC2B_BWE_START 30
#define OCD_BWC2B_BWE_SIZE 2
/* Bits in BWC3A */
#define OCD_BWC3A_ASIDEN_BIT 0
#define OCD_BWC3A_ASID_START 1
#define OCD_BWC3A_ASID_SIZE 8
#define OCD_BWC3A_SIZE_START 9
#define OCD_BWC3A_SIZE_SIZE 3
#define OCD_BWC3A_EOC_BIT 14
#define OCD_BWC3A_BWO_START 16
#define OCD_BWC3A_BWO_SIZE 2
#define OCD_BWC3A_BME_START 20
#define OCD_BWC3A_BME_SIZE 4
#define OCD_BWC3A_BRW_START 28
#define OCD_BWC3A_BRW_SIZE 2
#define OCD_BWC3A_BWE_START 30
#define OCD_BWC3A_BWE_SIZE 2
/* Bits in BWC3B */
#define OCD_BWC3B_ASIDEN_BIT 0
#define OCD_BWC3B_ASID_START 1
#define OCD_BWC3B_ASID_SIZE 8
#define OCD_BWC3B_SIZE_START 9
#define OCD_BWC3B_SIZE_SIZE 3
#define OCD_BWC3B_EOC_BIT 14
#define OCD_BWC3B_BWO_START 16
#define OCD_BWC3B_BWO_SIZE 2
#define OCD_BWC3B_BME_START 20
#define OCD_BWC3B_BME_SIZE 4
#define OCD_BWC3B_BRW_START 28
#define OCD_BWC3B_BRW_SIZE 2
#define OCD_BWC3B_BWE_START 30
#define OCD_BWC3B_BWE_SIZE 2
/* Bits in BWA0A */
#define OCD_BWA0A_BWA_START 0
#define OCD_BWA0A_BWA_SIZE 32
/* Bits in BWA0B */
#define OCD_BWA0B_BWA_START 0
#define OCD_BWA0B_BWA_SIZE 32
/* Bits in BWA1A */
#define OCD_BWA1A_BWA_START 0
#define OCD_BWA1A_BWA_SIZE 32
/* Bits in BWA1B */
#define OCD_BWA1B_BWA_START 0
#define OCD_BWA1B_BWA_SIZE 32
/* Bits in BWA2A */
#define OCD_BWA2A_BWA_START 0
#define OCD_BWA2A_BWA_SIZE 32
/* Bits in BWA2B */
#define OCD_BWA2B_BWA_START 0
#define OCD_BWA2B_BWA_SIZE 32
/* Bits in BWA3A */
#define OCD_BWA3A_BWA_START 0
#define OCD_BWA3A_BWA_SIZE 32
/* Bits in BWA3B */
#define OCD_BWA3B_BWA_START 0
#define OCD_BWA3B_BWA_SIZE 32
/* Bits in NXCFG */
#define OCD_NXCFG_NXARCH_START 0
#define OCD_NXCFG_NXARCH_SIZE 4
#define OCD_NXCFG_NXOCD_START 4
#define OCD_NXCFG_NXOCD_SIZE 4
#define OCD_NXCFG_NXPCB_START 8
#define OCD_NXCFG_NXPCB_SIZE 4
#define OCD_NXCFG_NXDB_START 12
#define OCD_NXCFG_NXDB_SIZE 4
#define OCD_NXCFG_MXMSEO_BIT 16
#define OCD_NXCFG_NXMDO_START 17
#define OCD_NXCFG_NXMDO_SIZE 4
#define OCD_NXCFG_NXPT_BIT 21
#define OCD_NXCFG_NXOT_BIT 22
#define OCD_NXCFG_NXDWT_BIT 23
#define OCD_NXCFG_NXDRT_BIT 24
#define OCD_NXCFG_NXDTC_START 25
#define OCD_NXCFG_NXDTC_SIZE 3
#define OCD_NXCFG_NXDMA_BIT 28
/* Bits in DINST */
#define OCD_DINST_DINST_START 0
#define OCD_DINST_DINST_SIZE 32
/* Bits in CPUCM */
#define OCD_CPUCM_BEM_BIT 1
#define OCD_CPUCM_FEM_BIT 2
#define OCD_CPUCM_REM_BIT 3
#define OCD_CPUCM_IBEM_BIT 4
#define OCD_CPUCM_IEEM_BIT 5
/* Bits in DCCPU */
#define OCD_DCCPU_DATA_START 0
#define OCD_DCCPU_DATA_SIZE 32
/* Bits in DCEMU */
#define OCD_DCEMU_DATA_START 0
#define OCD_DCEMU_DATA_SIZE 32
/* Bits in DCSR */
#define OCD_DCSR_CPUD_BIT 0
#define OCD_DCSR_EMUD_BIT 1
/* Bits in PID */
#define OCD_PID_PROCESS_START 0
#define OCD_PID_PROCESS_SIZE 32
/* Bits in EPC0 */
#define OCD_EPC0_RNG_START 0
#define OCD_EPC0_RNG_SIZE 2
#define OCD_EPC0_CE_BIT 4
#define OCD_EPC0_ECNT_START 16
#define OCD_EPC0_ECNT_SIZE 16
/* Bits in EPC1 */
#define OCD_EPC1_RNG_START 0
#define OCD_EPC1_RNG_SIZE 2
#define OCD_EPC1_ATB_BIT 5
#define OCD_EPC1_AM_BIT 6
/* Bits in EPC2 */
#define OCD_EPC2_RNG_START 0
#define OCD_EPC2_RNG_SIZE 2
#define OCD_EPC2_DB_START 2
#define OCD_EPC2_DB_SIZE 2
/* Bits in EPC3 */
#define OCD_EPC3_RNG_START 0
#define OCD_EPC3_RNG_SIZE 2
#define OCD_EPC3_DWE_BIT 2
/* Bits in AXC */
#define OCD_AXC_DIV_START 0
#define OCD_AXC_DIV_SIZE 4
#define OCD_AXC_AXE_BIT 8
#define OCD_AXC_AXS_BIT 9
#define OCD_AXC_DDR_BIT 10
#define OCD_AXC_LS_BIT 11
#define OCD_AXC_REX_BIT 12
#define OCD_AXC_REXTEN_BIT 13
/* Constants for DC:EIC */
#define OCD_EIC_PROGRAM_AND_DATA_TRACE 0
#define OCD_EIC_BREAKPOINT 1
#define OCD_EIC_NOP 2
/* Constants for DC:OVC */
#define OCD_OVC_OVERRUN 0
#define OCD_OVC_DELAY_CPU_BTM 1
#define OCD_OVC_DELAY_CPU_DTM 2
#define OCD_OVC_DELAY_CPU_BTM_DTM 3
/* Constants for DC:EOS */
#define OCD_EOS_NOP 0
#define OCD_EOS_DEBUG_MODE 1
#define OCD_EOS_BREAKPOINT_WATCHPOINT 2
#define OCD_EOS_THQ 3
/* Constants for RWCS:NTBC */
#define OCD_NTBC_OVERWRITE 0
#define OCD_NTBC_DISABLE 1
#define OCD_NTBC_BREAKPOINT 2
/* Constants for RWCS:CCTRL */
#define OCD_CCTRL_AUTO 0
#define OCD_CCTRL_CACHED 1
#define OCD_CCTRL_UNCACHED 2
/* Constants for RWCS:SZ */
#define OCD_SZ_BYTE 0
#define OCD_SZ_HALFWORD 1
#define OCD_SZ_WORD 2
/* Constants for WT:PTS */
#define OCD_PTS_DISABLED 0
#define OCD_PTS_PROGRAM_0B 1
#define OCD_PTS_PROGRAM_1A 2
#define OCD_PTS_PROGRAM_1B 3
#define OCD_PTS_PROGRAM_2A 4
#define OCD_PTS_PROGRAM_2B 5
#define OCD_PTS_DATA_3A 6
#define OCD_PTS_DATA_3B 7
/* Constants for DTC:RWT1 */
#define OCD_RWT1_NO_TRACE 0
#define OCD_RWT1_DATA_READ 1
#define OCD_RWT1_DATA_WRITE 2
#define OCD_RWT1_DATA_READ_WRITE 3
/* Constants for DTC:RWT0 */
#define OCD_RWT0_NO_TRACE 0
#define OCD_RWT0_DATA_READ 1
#define OCD_RWT0_DATA_WRITE 2
#define OCD_RWT0_DATA_READ_WRITE 3
/* Constants for BWC0A:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC0B:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC1A:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC1B:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC2A:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC2B:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC3A:SIZE */
#define OCD_SIZE_BYTE_ACCESS 4
#define OCD_SIZE_HALFWORD_ACCESS 5
#define OCD_SIZE_WORD_ACCESS 6
#define OCD_SIZE_DOUBLE_WORD_ACCESS 7
/* Constants for BWC3A:BRW */
#define OCD_BRW_READ_BREAK 0
#define OCD_BRW_WRITE_BREAK 1
#define OCD_BRW_ANY_ACCES_BREAK 2
/* Constants for BWC3A:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for BWC3B:SIZE */
#define OCD_SIZE_BYTE_ACCESS 4
#define OCD_SIZE_HALFWORD_ACCESS 5
#define OCD_SIZE_WORD_ACCESS 6
#define OCD_SIZE_DOUBLE_WORD_ACCESS 7
/* Constants for BWC3B:BRW */
#define OCD_BRW_READ_BREAK 0
#define OCD_BRW_WRITE_BREAK 1
#define OCD_BRW_ANY_ACCES_BREAK 2
/* Constants for BWC3B:BWE */
#define OCD_BWE_DISABLED 0
#define OCD_BWE_BREAKPOINT_ENABLED 1
#define OCD_BWE_WATCHPOINT_ENABLED 3
/* Constants for EPC0:RNG */
#define OCD_RNG_DISABLED 0
#define OCD_RNG_EXCLUSIVE 1
#define OCD_RNG_INCLUSIVE 2
/* Constants for EPC1:RNG */
#define OCD_RNG_DISABLED 0
#define OCD_RNG_EXCLUSIVE 1
#define OCD_RNG_INCLUSIVE 2
/* Constants for EPC2:RNG */
#define OCD_RNG_DISABLED 0
#define OCD_RNG_EXCLUSIVE 1
#define OCD_RNG_INCLUSIVE 2
/* Constants for EPC2:DB */
#define OCD_DB_DISABLED 0
#define OCD_DB_CHAINED_B 1
#define OCD_DB_CHAINED_A 2
#define OCD_DB_AHAINED_A_AND_B 3
/* Constants for EPC3:RNG */
#define OCD_RNG_DISABLED 0
#define OCD_RNG_EXCLUSIVE 1
#define OCD_RNG_INCLUSIVE 2
#ifndef __ASSEMBLER__
/* Register access macros */
static inline unsigned long __ocd_read(unsigned int reg)
{
return __builtin_mfdr(reg);
}
static inline void __ocd_write(unsigned int reg, unsigned long value)
{
__builtin_mtdr(reg, value);
}
#define ocd_read(reg) __ocd_read(OCD_##reg)
#define ocd_write(reg, value) __ocd_write(OCD_##reg, value)
struct task_struct;
void ocd_enable(struct task_struct *child);
void ocd_disable(struct task_struct *child);
#endif /* !__ASSEMBLER__ */
#endif /* __ASM_AVR32_OCD_H */
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