Hi Shimoda-san, Thanks for your patch,
On 2019-11-06 11:35:46 +0900, Yoshihiro Shimoda wrote: > To support different registers memory mapping hardware easily > in the future, this patch tidies up the register definitions > as below: > - Add comments to state to which SoCs or SoC families they apply > - Add categories about MMU "context" and uTLB registers > > No change behavior. > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se> > --- > drivers/iommu/ipmmu-vmsa.c | 58 > ++++++++++++++++++++++++---------------------- > 1 file changed, 30 insertions(+), 28 deletions(-) > > diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c > index c4ec166..79975e1 100644 > --- a/drivers/iommu/ipmmu-vmsa.c > +++ b/drivers/iommu/ipmmu-vmsa.c > @@ -101,47 +101,49 @@ static struct ipmmu_vmsa_device *to_ipmmu(struct device > *dev) > > #define IM_CTX_SIZE 0x40 > > -#define IMCTR 0x0000 > -#define IMCTR_INTEN (1 << 2) > -#define IMCTR_FLUSH (1 << 1) > -#define IMCTR_MMUEN (1 << 0) > - > -#define IMTTBCR 0x0008 > -#define IMTTBCR_EAE (1 << 31) > +/* MMU "context" registers */ > +#define IMCTR 0x0000 /* R-Car Gen2/3 > */ > +#define IMCTR_INTEN (1 << 2) /* R-Car Gen2/3 */ > +#define IMCTR_FLUSH (1 << 1) /* R-Car Gen2/3 */ > +#define IMCTR_MMUEN (1 << 0) /* R-Car Gen2/3 */ > + > +#define IMTTBCR 0x0008 /* R-Car Gen2/3 > */ > +#define IMTTBCR_EAE (1 << 31) /* R-Car Gen2/3 */ > #define IMTTBCR_SH0_INNER_SHAREABLE (3 << 12) /* R-Car Gen2 only */ > #define IMTTBCR_ORGN0_WB_WA (1 << 10) /* R-Car Gen2 only */ > #define IMTTBCR_IRGN0_WB_WA (1 << 8) /* R-Car Gen2 only */ > #define IMTTBCR_SL0_TWOBIT_LVL_1 (2 << 6) /* R-Car Gen3 only */ > -#define IMTTBCR_SL0_LVL_1 (1 << 4) > +#define IMTTBCR_SL0_LVL_1 (1 << 4) /* R-Car Gen2 only */ > > -#define IMBUSCR 0x000c > -#define IMBUSCR_DVM (1 << 2) > -#define IMBUSCR_BUSSEL_MASK (3 << 0) > +#define IMBUSCR 0x000c /* R-Car Gen2 > only */ > +#define IMBUSCR_DVM (1 << 2) /* R-Car Gen2 only */ > +#define IMBUSCR_BUSSEL_MASK (3 << 0) /* R-Car Gen2 only */ > > -#define IMTTLBR0 0x0010 > -#define IMTTUBR0 0x0014 > +#define IMTTLBR0 0x0010 /* R-Car Gen2/3 */ > +#define IMTTUBR0 0x0014 /* R-Car Gen2/3 */ > > -#define IMSTR 0x0020 > -#define IMSTR_MHIT (1 << 4) > -#define IMSTR_ABORT (1 << 2) > -#define IMSTR_PF (1 << 1) > -#define IMSTR_TF (1 << 0) > +#define IMSTR 0x0020 /* R-Car Gen2/3 > */ > +#define IMSTR_MHIT (1 << 4) /* R-Car Gen2/3 */ > +#define IMSTR_ABORT (1 << 2) /* R-Car Gen2/3 */ > +#define IMSTR_PF (1 << 1) /* R-Car Gen2/3 */ > +#define IMSTR_TF (1 << 0) /* R-Car Gen2/3 */ > > -#define IMMAIR0 0x0028 > +#define IMMAIR0 0x0028 /* R-Car Gen2/3 > */ > > -#define IMELAR 0x0030 /* IMEAR on R-Car Gen2 > */ > -#define IMEUAR 0x0034 /* R-Car Gen3 only */ > +#define IMELAR 0x0030 /* R-Car > Gen2/3, IMEAR on R-Car Gen2 */ > +#define IMEUAR 0x0034 /* R-Car Gen3 > only */ > > +/* uTLB registers */ > #define IMUCTR(n) ((n) < 32 ? IMUCTR0(n) : IMUCTR32(n)) > -#define IMUCTR0(n) (0x0300 + ((n) * 16)) > -#define IMUCTR32(n) (0x0600 + (((n) - 32) * 16)) > -#define IMUCTR_TTSEL_MMU(n) ((n) << 4) > -#define IMUCTR_FLUSH (1 << 1) > -#define IMUCTR_MMUEN (1 << 0) > +#define IMUCTR0(n) (0x0300 + ((n) * 16)) /* > R-Car Gen2/3 */ > +#define IMUCTR32(n) (0x0600 + (((n) - 32) * 16)) /* > R-Car Gen3 only */ > +#define IMUCTR_TTSEL_MMU(n) ((n) << 4) /* R-Car Gen2/3 */ > +#define IMUCTR_FLUSH (1 << 1) /* R-Car Gen2/3 */ > +#define IMUCTR_MMUEN (1 << 0) /* R-Car Gen2/3 */ > > #define IMUASID(n) ((n) < 32 ? IMUASID0(n) : IMUASID32(n)) > -#define IMUASID0(n) (0x0308 + ((n) * 16)) > -#define IMUASID32(n) (0x0608 + (((n) - 32) * 16)) > +#define IMUASID0(n) (0x0308 + ((n) * 16)) /* > R-Car Gen2/3 */ > +#define IMUASID32(n) (0x0608 + (((n) - 32) * 16)) /* > R-Car Gen3 only */ > > /* > ----------------------------------------------------------------------------- > * Root device handling > -- > 2.7.4 > -- Regards, Niklas Söderlund _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
