zhuyanlinzyl edited a comment on pull request #5336:
URL: https://github.com/apache/incubator-nuttx/pull/5336#issuecomment-1042545274
@Ouss4 :
> These are internal CPU interrupts, which means each CPU has both
ESP32_CPUINT_SOFTWARE0 and ESP32_CPUINT_SOFTWARE1. They have the same
interrupt number but controlled from each CPU's registers.
So each CPU have separate internal interrupts，Such as
`ESP32_CPUINT_SOFTWARE1` and
`ESP32_CPUINT_TIMER0`
Then I think the g_irqmap must be g_irqmap[CONFIG_SMP_NCPUS] for internal
interrupts.
Is my understanding correct?
> The thing that I see is going to be a bit messy is how we dispatch the
interrupts. Since they have the same numbers so in NuttX they will have the
same irq number.
I don't think dispatch interrupts is a problem. As every CPU only have one
interrupt per number , They handle their own interrupts independently.
I have modify up_enable_irq with this patch
```
if (irq < XTENSA_NIRQ_INTERNAL)
{
- /* Enable the CPU interrupt now for internal CPU. */
+ /* Enable the CPU interrupt now for internal CPU. */
+ if ((irq == 4) && (up_cpu_index() == 0))
+ {
+ cpu = 0;
+ }
xtensa_enable_cpuint(&g_intenable[cpu], (1ul << cpuint));
}
```
Then the smp config work well.
```
zyl@zyl:~/nuttx$ qemu-system-xtensa -nographic -machine esp32 -smp 2 -drive
file=./nuttx.merged.bin,if=mtd,format=raw
==3509606==WARNING: ASan doesn't fully support makecontext/swapcontext
functions and may produce false positives in some cases!
Adding SPI flash device
ets Jul 29 2019 12:21:46
rst:0x1 (POWERON_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:6604
ho 0 tail 12 room 4
load:0x40078000,len:14780
load:0x40080400,len:3792
entry 0x40080694
I (1017) boot: ESP-IDF v4.4 2nd stage bootloader
I (1031) boot: compile time 19:32:08
I (1053) boot: chip revision: 0
I (1069) boot.esp32: SPI Speed : 40MHz
I (1072) boot.esp32: SPI Mode : DIO
I (1074) boot.esp32: SPI Flash Size : 4MB
I (1097) boot: Enabling RNG early entropy source...
I (1129) boot: Partition Table:
I (1130) boot: ## Label Usage Type ST Offset Length
I (1132) boot: 0 factory factory app 00 00 00010000 00100000
I (1150) boot: End of partition table
I (1169) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=08708h (
34568) map
I (1270) esp_image: segment 1: paddr=00018730 vaddr=3ffb3ce0 size=00100h (
256) load
I (1305) esp_image: segment 2: paddr=00018838 vaddr=40080000 size=01c58h (
7256) load
I (1357) esp_image: segment 3: paddr=0001a498 vaddr=00000000 size=05b80h (
23424)
I (1428) esp_image: segment 4: paddr=00020020 vaddr=400d0020 size=170e0h (
94432) map
I (1632) boot: Loaded app from partition at offset 0x10000
I (1636) boot: Disabling RNG early entropy source...
NuttShell (NSH) NuttX-10.2.0
nsh> ps
PID GROUP CPU PRI POLICY TYPE NPX STATE EVENT SIGMASK STACK
USED FILLED COMMAND
0 0 0 0 FIFO Kthread N-- Assigned 00000000 003040
000976 32.1% CPU0 IDLE
1 1 1 0 FIFO Kthread N-- Running 00000000 003040
000640 21.0% CPU1 IDLE
2 2 0 100 RR Task --- Running 00000000 002000
001840 92.0%! nsh_main
```
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