On 22/06/2022 15:36, Adrián Larumbe wrote: > Each Panfrost job has its own job slot and MMU address space set of > registers, which are selected with a job-specific index. > > Turn the shift and stride used for selection of the right register set base > into a define rather than using magic numbers. > > Signed-off-by: Adrián Larumbe <adrian.larumbe@xxxxxxxxxxxxx> > --- Looks good, but one comment below. > drivers/gpu/drm/panfrost/panfrost_regs.h | 39 +++++++++++++----------- > 1 file changed, 21 insertions(+), 18 deletions(-) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_regs.h b/drivers/gpu/drm/panfrost/panfrost_regs.h > index accb4fa3adb8..1ddc6c4c5e1c 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_regs.h > +++ b/drivers/gpu/drm/panfrost/panfrost_regs.h > @@ -225,24 +225,26 @@ > #define JOB_INT_MASK_ERR(j) BIT((j) + 16) > #define JOB_INT_MASK_DONE(j) BIT(j) > > +#define JS_SLOT_STRIDE 0x80 > + > #define JS_BASE 0x1800 > -#define JS_HEAD_LO(n) (JS_BASE + ((n) * 0x80) + 0x00) > -#define JS_HEAD_HI(n) (JS_BASE + ((n) * 0x80) + 0x04) > -#define JS_TAIL_LO(n) (JS_BASE + ((n) * 0x80) + 0x08) > -#define JS_TAIL_HI(n) (JS_BASE + ((n) * 0x80) + 0x0c) > -#define JS_AFFINITY_LO(n) (JS_BASE + ((n) * 0x80) + 0x10) > -#define JS_AFFINITY_HI(n) (JS_BASE + ((n) * 0x80) + 0x14) > -#define JS_CONFIG(n) (JS_BASE + ((n) * 0x80) + 0x18) > -#define JS_XAFFINITY(n) (JS_BASE + ((n) * 0x80) + 0x1c) > -#define JS_COMMAND(n) (JS_BASE + ((n) * 0x80) + 0x20) > -#define JS_STATUS(n) (JS_BASE + ((n) * 0x80) + 0x24) > -#define JS_HEAD_NEXT_LO(n) (JS_BASE + ((n) * 0x80) + 0x40) > -#define JS_HEAD_NEXT_HI(n) (JS_BASE + ((n) * 0x80) + 0x44) > -#define JS_AFFINITY_NEXT_LO(n) (JS_BASE + ((n) * 0x80) + 0x50) > -#define JS_AFFINITY_NEXT_HI(n) (JS_BASE + ((n) * 0x80) + 0x54) > -#define JS_CONFIG_NEXT(n) (JS_BASE + ((n) * 0x80) + 0x58) > -#define JS_COMMAND_NEXT(n) (JS_BASE + ((n) * 0x80) + 0x60) > -#define JS_FLUSH_ID_NEXT(n) (JS_BASE + ((n) * 0x80) + 0x70) > +#define JS_HEAD_LO(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x00) > +#define JS_HEAD_HI(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x04) > +#define JS_TAIL_LO(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x08) > +#define JS_TAIL_HI(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x0c) > +#define JS_AFFINITY_LO(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x10) > +#define JS_AFFINITY_HI(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x14) > +#define JS_CONFIG(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x18) > +#define JS_XAFFINITY(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x1c) > +#define JS_COMMAND(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x20) > +#define JS_STATUS(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x24) > +#define JS_HEAD_NEXT_LO(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x40) > +#define JS_HEAD_NEXT_HI(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x44) > +#define JS_AFFINITY_NEXT_LO(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x50) > +#define JS_AFFINITY_NEXT_HI(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x54) > +#define JS_CONFIG_NEXT(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x58) > +#define JS_COMMAND_NEXT(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x60) > +#define JS_FLUSH_ID_NEXT(n) (JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x70) > > /* Possible values of JS_CONFIG and JS_CONFIG_NEXT registers */ > #define JS_CONFIG_START_FLUSH_CLEAN BIT(8) > @@ -281,7 +283,8 @@ > #define AS_COMMAND_FLUSH_MEM 0x05 /* Wait for memory accesses to complete, flush all the L1s cache then > flush all L2 caches then issue a flush region command to all MMUs */ > > -#define MMU_AS(as) (0x2400 + ((as) << 6)) > +#define MMU_AS_SHIFT 0x06 > +#define MMU_AS(as) (0x2400 + ((as) << MMU_AS_SHIFT)) It would be good to have a #define for the 'magic' 0x2400 constant here too. See also my reply to the second patch. Steve > > #define AS_TRANSTAB_LO(as) (MMU_AS(as) + 0x00) /* (RW) Translation Table Base Address for address space n, low word */ > #define AS_TRANSTAB_HI(as) (MMU_AS(as) + 0x04) /* (RW) Translation Table Base Address for address space n, high word */
