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esp32: Dis interrupts up to 5 lvl for DPORT

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Disable interrupts for both DPORT workarounds up to 5 lvl.

Closes: https://esp32.com/viewtopic.php?f=2&t=10981&sid=d125cec233070ed4d2c5410bf5d3d74a
Closes: IDF-728
This commit is contained in:
Konstantin Kondrashov 2019-06-25 19:23:10 +08:00 committed by bot
parent a6b39f0c64
commit 632b016028
4 changed files with 16 additions and 4 deletions
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7
components/esp32/Kconfig
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@ -741,6 +741,13 @@ menu "ESP32-specific"
Please note that the actual length will be reduced by BT_RESERVE_DRAM if Bluetooth
controller is enabled.
config ESP32_DPORT_DIS_INTERRUPT_LVL
int "Disable the interrupt level for the DPORT workarounds"
default 5
help
To prevent interrupting DPORT workarounds,
need to disable interrupt with a maximum used level in the system.
endmenu # ESP32-Specific
menu "Power Management"

2
components/esp32/dport_access.c
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@ -256,7 +256,7 @@ uint32_t IRAM_ATTR esp_dport_access_reg_read(uint32_t reg)
unsigned int intLvl;
__asm__ __volatile__ (\
"movi %[APB], "XTSTR(0x3ff40078)"\n"\
"rsil %[LVL], "XTSTR(3)"\n"\
"rsil %[LVL], "XTSTR(CONFIG_ESP32_DPORT_DIS_INTERRUPT_LVL)"\n"\
"l32i %[APB], %[APB], 0\n"\
"l32i %[REG], %[REG], 0\n"\
"wsr %[LVL], "XTSTR(PS)"\n"\

9
components/esp32/dport_panic_highint_hdl.S
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@ -31,9 +31,10 @@ Interrupt , a high-priority interrupt, is used for several things:
*/
#define L4_INTR_STACK_SIZE 8
#define L4_INTR_STACK_SIZE 12
#define L4_INTR_A2_OFFSET 0
#define L4_INTR_A3_OFFSET 4
#define L4_INTR_A4_OFFSET 8
.data
_l4_intr_stack:
.space L4_INTR_STACK_SIZE
@ -145,10 +146,11 @@ xt_highint4:
movi a0, (1<<ETS_DPORT_INUM)
wsr a0, INTCLEAR
/* Save A2, A3 so we can use those registers */
/* Save A2, A3, A4 so we can use those registers */
movi a0, _l4_intr_stack
s32i a2, a0, L4_INTR_A2_OFFSET
s32i a3, a0, L4_INTR_A3_OFFSET
s32i a4, a0, L4_INTR_A4_OFFSET
/* handle dport interrupt */
/* get CORE_ID */
@ -168,6 +170,7 @@ xt_highint4:
s32i a2, a0, 0 /* clear intr */
movi a0, 1 /* other cpu id */
3:
rsil a4, CONFIG_ESP32_DPORT_DIS_INTERRUPT_LVL /* disable nested iterrupt */
/* set and wait flag */
movi a2, dport_access_start
addx4 a2, a0, a2
@ -180,10 +183,12 @@ xt_highint4:
l32i a3, a2, 0
beqz a3, .check_dport_access_end
wsr a4, PS /* restore iterrupt level */
/* Done. Restore registers and return. */
movi a0, _l4_intr_stack
l32i a2, a0, L4_INTR_A2_OFFSET
l32i a3, a0, L4_INTR_A3_OFFSET
l32i a4, a0, L4_INTR_A4_OFFSET
rsync /* ensure register restored */
rsr a0, EXCSAVE_4 /* restore a0 */

2
components/esp32/include/esp32/dport_access.h
View File

@ -41,7 +41,7 @@ void esp_dport_access_int_abort(void);
#else
#define DPORT_STALL_OTHER_CPU_START() esp_dport_access_stall_other_cpu_start()
#define DPORT_STALL_OTHER_CPU_END() esp_dport_access_stall_other_cpu_end()
#define DPORT_INTERRUPT_DISABLE() unsigned int intLvl = XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL)
#define DPORT_INTERRUPT_DISABLE() unsigned int intLvl = XTOS_SET_INTLEVEL(CONFIG_ESP32_DPORT_DIS_INTERRUPT_LVL)
#define DPORT_INTERRUPT_RESTORE() XTOS_RESTORE_JUST_INTLEVEL(intLvl)
#endif