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lib: sbi: Add a simple external interrupt handling framework

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Currently, the external interrupt handling is scattered between
sbi_init and sbi_trap. This patch moves all external interrupt
handling into a simple framework called sbi_irqchip.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Anup Patel
2022-02-18 23:18:41 +05:30
committed by Anup Patel
parent f2ccf2f783
commit f3f4604c19
7 changed files with 109 additions and 34 deletions
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12
lib/sbi/sbi_init.c
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@@ -18,6 +18,7 @@
#include <sbi/sbi_hartmask.h>
#include <sbi/sbi_hsm.h>
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_irqchip.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_pmu.h>
#include <sbi/sbi_system.h>
@@ -270,13 +271,12 @@ static void __noreturn init_coldboot(struct sbi_scratch *scratch, u32 hartid)
sbi_boot_print_banner(scratch);
rc = sbi_platform_irqchip_init(plat, TRUE);
rc = sbi_irqchip_init(scratch, TRUE);
if (rc) {
sbi_printf("%s: platform irqchip init failed (error %d)\n",
sbi_printf("%s: irqchip init failed (error %d)\n",
__func__, rc);
sbi_hart_hang();
}
csr_set(CSR_MIE, MIP_MEIP);
rc = sbi_ipi_init(scratch, TRUE);
if (rc) {
@@ -374,10 +374,9 @@ static void init_warm_startup(struct sbi_scratch *scratch, u32 hartid)
if (rc)
sbi_hart_hang();
rc = sbi_platform_irqchip_init(plat, FALSE);
rc = sbi_irqchip_init(scratch, FALSE);
if (rc)
sbi_hart_hang();
csr_set(CSR_MIE, MIP_MEIP);
rc = sbi_ipi_init(scratch, FALSE);
if (rc)
@@ -552,8 +551,7 @@ void __noreturn sbi_exit(struct sbi_scratch *scratch)
sbi_ipi_exit(scratch);
csr_clear(CSR_MIE, MIP_MEIP);
sbi_platform_irqchip_exit(plat);
sbi_irqchip_exit(scratch);
sbi_platform_final_exit(plat);