Mirrors/opensbi
4
0
Fork 1
mirror of https://github.com/riscv-software-src/opensbi.git synced 2025-10-09 10:02:19 +01:00
Code Issues Packages Projects Releases Wiki Activity

lib: sbi: Introduce IPI device rating

Browse Source 
A platform can have multiple IPI devices (such as ACLINT MSWI,
AIA IMSIC, etc). Currently, OpenSBI rely on platform calling
the sbi_ipi_set_device() function in correct order and prefer
the first avaiable IPI device which is fragile.

Instead of the above, introduce IPI device rating and prefer
the highest rated IPI device. This further allows extending
the sbi_ipi_raw_clear() to clear all available IPI devices.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Tested-by: Nick Hu <nick.hu@sifive.com>
Link: https://lore.kernel.org/r/20250904052410.546818-2-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel
2025-09-04 10:54:08 +05:30
committed by Anup Patel
parent 17b8d1900d
commit ee92afa638
6 changed files with 47 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
lib/utils/ipi/aclint_mswi.c
View File

@@ -62,6 +62,7 @@ static void mswi_ipi_clear(void)
static struct sbi_ipi_device aclint_mswi = {
.name = "aclint-mswi",
.rating = 100,
.ipi_send = mswi_ipi_send,
.ipi_clear = mswi_ipi_clear
};
@@ -106,7 +107,7 @@ int aclint_mswi_cold_init(struct aclint_mswi_data *mswi)
if (rc)
return rc;
sbi_ipi_set_device(&aclint_mswi);
sbi_ipi_add_device(&aclint_mswi);
return 0;
}

3
lib/utils/ipi/andes_plicsw.c
View File

@@ -61,6 +61,7 @@ static void plicsw_ipi_clear(void)
static struct sbi_ipi_device plicsw_ipi = {
.name = "andes_plicsw",
.rating = 200,
.ipi_send = plicsw_ipi_send,
.ipi_clear = plicsw_ipi_clear
};
@@ -99,7 +100,7 @@ int plicsw_cold_ipi_init(struct plicsw_data *plicsw)
if (rc)
return rc;
sbi_ipi_set_device(&plicsw_ipi);
sbi_ipi_add_device(&plicsw_ipi);
return 0;
}

3
lib/utils/irqchip/imsic.c
View File

@@ -199,6 +199,7 @@ static void imsic_ipi_send(u32 hart_index)
static struct sbi_ipi_device imsic_ipi_device = {
.name = "aia-imsic",
.rating = 300,
.ipi_send = imsic_ipi_send
};
@@ -393,7 +394,7 @@ int imsic_cold_irqchip_init(struct imsic_data *imsic)
sbi_irqchip_add_device(&imsic_device);
/* Register IPI device */
sbi_ipi_set_device(&imsic_ipi_device);
sbi_ipi_add_device(&imsic_ipi_device);
return 0;
}