opensbi.git/lib/utils/irqchip/imsic.c, branch v1.3

lib: utils/irqchip: Use scratch space to save per-HART IMSIC pointer

2023-06-06T10:31:14Z

Instead of using a global array indexed by hartid, we should use scratch space to save per-HART IMSIC pointer and IMSIC file number. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: utils: Add M-mode {R/W} flags to the MMIO regions

2023-01-09T12:34:28Z

Add the M-mode readable/writable flags to mmio regions of various drivers. Signed-off-by: Himanshu Chauhan Reviewed-by: Anup Patel Tested-by: Anup Patel

lib: utils: Remove CSRs that set/clear an IMSIC interrupt file bits

2022-06-21T03:14:45Z

Based on architecture review committee feedback, the [m|s|vs]seteienum, [m|s|vs]clreienum, [m|s|vs]seteipnum, and [m|s|vs]clreipnum CSRs are removed in the latest AIA draft v0.3.0 specification. (Refer, https://github.com/riscv/riscv-aia/releases/tag/0.3.0-draft.31) These CSRs were mostly for software convenience and software can always use [m|s|vs]iselect and [m|s|vs]ireg CSRs to update the IMSIC interrupt file bits. We update the IMSIC programming as-per above to match the latest AIA draft specification. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Add a simple external interrupt handling framework

2022-02-28T04:13:12Z

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 Reviewed-by: Xiang W Reviewed-by: Atish Patra

lib: utils/irqchip: Add IMSIC library

2022-02-15T15:06:24Z

We add simple IMSIC library which is independent of hardware description format (FDT or ACPI). This IMSIC library can be used by custom OpenSBI platform support to setup IMSIC for external interrupts. Signed-off-by: Anup Patel Signed-off-by: Anup Patel Reviewed-by: Atish Patra