RISC-V: Device, timer, IRQs, and the SBI

This patch contains code that interfaces with devices that are mandated by the RISC-V supervisor specification and that don't have explicit drivers anywhere else in the tree. This includes the staticly defined interrupts, the CSR-mapped timer, and virtualized SBI devices. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
2026-09-26 18:16:26 +00:00 · 2017-07-10 18:05:09 -07:00 · 2017-07-10 18:05:09 -07:00 · 6d60b6ee0c
commit 6d60b6ee0c
parent 7db91e57a0
9 changed files with 566 additions and 0 deletions
--- a/arch/riscv/include/asm/delay.h
+++ b/arch/riscv/include/asm/delay.h
--- a/arch/riscv/include/asm/dma-mapping.h
+++ b/arch/riscv/include/asm/dma-mapping.h
--- a/arch/riscv/include/asm/irq.h
+++ b/arch/riscv/include/asm/irq.h
--- a/arch/riscv/include/asm/irqflags.h
+++ b/arch/riscv/include/asm/irqflags.h
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
--- a/arch/riscv/include/asm/timex.h
+++ b/arch/riscv/include/asm/timex.h
--- a/arch/riscv/lib/delay.c
+++ b/arch/riscv/lib/delay.c
--- a/arch/riscv/mm/ioremap.c
+++ b/arch/riscv/mm/ioremap.c