Commit Graph

6 Commits

Author SHA1 Message Date
Xiang W
8b026abc5a lib: sbi: Fix SHMEM_PHYS_ADDR for RV32
Obtaining a 64-bit address under rv32 does not require combining two
32-bit registers because we ignore upper 32-bits on rv32.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250319123832.505033-1-wxjstz@126.com
Signed-off-by: Anup Patel <anup@brainfault.org>
2025-04-15 11:22:00 +05:30
Xiang W
ce57cb572e lib: sbi: Add parameter check in sbi_mpxy_set_shmem()
Shared memory needs to be accessed in M-Mode so for now the high
address of shared memory can't non-zero.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250319123719.504622-1-wxjstz@126.com
Signed-off-by: Anup Patel <anup@brainfault.org>
2025-04-15 10:19:13 +05:30
Anup Patel
ec09918426 lib: sbi: Update MPXY framework and SBI extension as per latest spec
The latest SBI 3.0 spec defines a new sbi_mpxy_get_shmem_size()
function and simplifies sbi_mpxy_set_shmem() function so update
the MPXY framework and SBI extension accordingly.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
2025-02-13 11:10:03 +05:30
Anup Patel
a4876e6c6c lib: sbi: Improve local variable declarations in MPXY framework
The local variable declarations should be at the start of function
and preferrably organized like a inverted pyramid.

Signed-off-by: Anup patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
2025-02-13 11:10:03 +05:30
Anup Patel
30437eb204 lib: sbi: Fix capability bit assignment in MPXY framework
The capability bit assignment in MPXY framework does not match the
SBI MPXY extension in latest SBI specification so update it.

Fixes: 7939bf1329 ("lib: sbi: Add SBI Message Proxy (MPXY) framework")
Signed-off-by: Anup patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
2025-02-13 11:10:03 +05:30
Rahul Pathak
7939bf1329 lib: sbi: Add SBI Message Proxy (MPXY) framework
Introduce SBI Message Proxy (MPXY) framework which allows platform specific
code or drivers to register message protocol specific channels.

This framework enables the supervisor software to send messages belonging
to different message protocols via OpenSBI firmware.

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Co-developed-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Co-developed-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
2024-12-06 09:26:50 +05:30