On Wed, Sep 25, 2019 at 10:58 PM Simon Glass <s...@chromium.org> wrote: > > At present these functions are stubbed out. For more comprehensive testing > with PCI devices it is useful to be able to fully emulate I/O access. Add > simple implementations for these. > > Signed-off-by: Simon Glass <s...@chromium.org> > --- > > arch/sandbox/cpu/cpu.c | 51 ++++++++++++++++++++++++++++++++ > arch/sandbox/include/asm/io.h | 27 +++++++++++------ > arch/sandbox/include/asm/state.h | 1 + > drivers/nvme/nvme.h | 4 +-- > 4 files changed, 72 insertions(+), 11 deletions(-) > > diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c > index fdfb209f77d..f3af88d79e9 100644 > --- a/arch/sandbox/cpu/cpu.c > +++ b/arch/sandbox/cpu/cpu.c > @@ -225,6 +225,57 @@ phys_addr_t map_to_sysmem(const void *ptr) > return mentry->tag; > } > > +unsigned int sandbox_read(const void *addr, enum sandboxio_size_t size) > +{ > + struct sandbox_state *state = state_get_current(); > + > + if (!state->allow_memio) > + return 0; > + > + switch (size) { > + case SB_SIZE_8: > + return *(u8 *)addr; > + case SB_SIZE_16: > + return *(u16 *)addr; > + case SB_SIZE_32: > + return *(u32 *)addr; > + case SB_SIZE_64: > + return *(u64 *)addr; > + } > + > + return 0; > +} > + > +void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size)
const void *addr > +{ > + struct sandbox_state *state = state_get_current(); > + > + if (!state->allow_memio) > + return; > + > + switch (size) { > + case SB_SIZE_8: > + *(u8 *)addr = val; > + break; > + case SB_SIZE_16: > + *(u16 *)addr = val; > + break; > + case SB_SIZE_32: > + *(u32 *)addr = val; > + break; > + case SB_SIZE_64: > + *(u64 *)addr = val; > + break; > + } > +} > + > +void sandbox_set_enable_memio(bool enable) > +{ > + struct sandbox_state *state = state_get_current(); > + > + state->allow_memio = enable; > +} > + > void sandbox_set_enable_pci_map(int enable) > { > enable_pci_map = enable; > diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h > index 481787b516b..2bbaff26a61 100644 > --- a/arch/sandbox/include/asm/io.h > +++ b/arch/sandbox/include/asm/io.h > @@ -6,6 +6,13 @@ > #ifndef __SANDBOX_ASM_IO_H > #define __SANDBOX_ASM_IO_H > > +enum sandboxio_size_t { > + SB_SIZE_8, > + SB_SIZE_16, > + SB_SIZE_32, > + SB_SIZE_64, > +}; > + > void *phys_to_virt(phys_addr_t paddr); > #define phys_to_virt phys_to_virt > > @@ -38,18 +45,20 @@ static inline void unmap_sysmem(const void *vaddr) > /* Map from a pointer to our RAM buffer */ > phys_addr_t map_to_sysmem(const void *ptr); > > -/* Define nops for sandbox I/O access */ > -#define readb(addr) ((void)addr, 0) > -#define readw(addr) ((void)addr, 0) > -#define readl(addr) ((void)addr, 0) > +unsigned int sandbox_read(const void *addr, enum sandboxio_size_t size); > +void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size); > + > +#define readb(addr) sandbox_read(addr, SB_SIZE_8) > +#define readw(addr) sandbox_read(addr, SB_SIZE_16) > +#define readl(addr) sandbox_read(addr, SB_SIZE_32) > #ifdef CONFIG_SANDBOX64 > -#define readq(addr) ((void)addr, 0) > +#define readq(addr) sandbox_read(addr, SB_SIZE_64) > #endif > -#define writeb(v, addr) ((void)addr) > -#define writew(v, addr) ((void)addr) > -#define writel(v, addr) ((void)addr) > +#define writeb(v, addr) sandbox_write(addr, v, SB_SIZE_8) > +#define writew(v, addr) sandbox_write(addr, v, SB_SIZE_16) > +#define writel(v, addr) sandbox_write(addr, v, SB_SIZE_32) > #ifdef CONFIG_SANDBOX64 > -#define writeq(v, addr) ((void)addr) > +#define writeq(v, addr) sandbox_write(addr, v, SB_SIZE_64) > #endif > > /* > diff --git a/arch/sandbox/include/asm/state.h > b/arch/sandbox/include/asm/state.h > index 2d773d3fa6b..ad3e94beb9a 100644 > --- a/arch/sandbox/include/asm/state.h > +++ b/arch/sandbox/include/asm/state.h > @@ -102,6 +102,7 @@ struct sandbox_state { > ulong next_tag; /* Next address tag to allocate */ > struct list_head mapmem_head; /* struct sandbox_mapmem_entry */ > bool hwspinlock; /* Hardware Spinlock status */ > + bool allow_memio; /* Allow readl() etc. to work */ > > /* > * This struct is getting large. > diff --git a/drivers/nvme/nvme.h b/drivers/nvme/nvme.h > index 922f7abfe85..c56ea7e58e6 100644 > --- a/drivers/nvme/nvme.h > +++ b/drivers/nvme/nvme.h > @@ -536,7 +536,7 @@ struct nvme_completion { > static inline u64 nvme_readq(__le64 volatile *regs) > { > #if BITS_PER_LONG == 64 > - return readq(regs); > + return readq((__le64 *)regs); This cast is not needed > #else > __u32 *ptr = (__u32 *)regs; > u64 val_lo = readl(ptr); > @@ -549,7 +549,7 @@ static inline u64 nvme_readq(__le64 volatile *regs) > static inline void nvme_writeq(const u64 val, __le64 volatile *regs) > { > #if BITS_PER_LONG == 64 > - writeq(val, regs); > + writeq(val, (__le64 *)regs); Ditto > #else > __u32 *ptr = (__u32 *)regs; > u32 val_lo = lower_32_bits(val); > -- Other than above, Reviewed-by: Bin Meng <bmeng...@gmail.com> Tested-by: Bin Meng <bmeng...@gmail.com> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot