Michael Clark e3e7039cc2 RISC-V: Allow interrupt controllers to claim interrupts ... We can't allow the supervisor to control SEIP as this would allow the supervisor to clear a pending external interrupt which will result in lost a interrupt in the case a PLIC is attached. The SEIP bit must be hardware controlled when a PLIC is attached. This logic was previously hard-coded so SEIP was always masked even if no PLIC was attached. This patch adds riscv_cpu_claim_interrupts so that the PLIC can register control of SEIP. In the case of models without a PLIC (spike), the SEIP bit remains software controlled. This interface allows for hardware control of supervisor timer and software interrupts by other interrupt controller models. Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Sagar Karandikar <sagark@eecs.berkeley.edu> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Alistair Francis <Alistair.Francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>		2019-03-19 05:14:39 -07:00
..
Kconfig	riscv/Kconfig: enable PCI_DEVICES	2019-03-11 16:33:49 +01:00
Makefile.objs	hw/riscv/Makefile.objs: Create CONFIG_* for riscv boards	2019-02-05 16:50:20 +01:00
riscv_hart.c	riscv_hart: Fix crash when introspecting the device	2018-07-19 09:05:48 -07:00
riscv_htif.c	hw: Do not include "exec/address-spaces.h" if it is not necessary	2018-06-01 14:15:10 +02:00
sifive_clint.c	RISC-V: Fix CLINT timecmp low 32-bit writes	2018-12-20 12:08:43 -08:00
sifive_e.c	riscv: Ensure the kernel start address is correctly cast	2019-02-11 15:56:22 -08:00
sifive_plic.c	RISC-V: Allow interrupt controllers to claim interrupts	2019-03-19 05:14:39 -07:00
sifive_prci.c	SiFive RISC-V PRCI Block	2018-03-07 08:30:28 +13:00
sifive_test.c	SiFive RISC-V Test Finisher	2018-03-07 08:30:28 +13:00
sifive_u.c	riscv: Ensure the kernel start address is correctly cast	2019-02-11 15:56:22 -08:00
sifive_uart.c	sifive_uart: Implement interrupt pending register	2018-12-20 12:08:43 -08:00
spike.c	riscv: Ensure the kernel start address is correctly cast	2019-02-11 15:56:22 -08:00
virt.c	riscv: Ensure the kernel start address is correctly cast	2019-02-11 15:56:22 -08:00