On Oct 4, 2012, at 6:56 AM, <b16...@freescale.com> <b16...@freescale.com> wrote:
> From: Varun Sethi <varun.se...@freescale.com> > > Following is a brief description of the PAMU hardware: > PAMU determines what action to take and whether to authorize the action on > the basis > of the memory address, a Logical IO Device Number (LIODN), and PAACT table > (logically) > indexed by LIODN and address. Hardware devices which need to access memory > must provide > an LIODN in addition to the memory address. > > Peripheral Access Authorization and Control Tables (PAACTs) are the primary > data structures > used by PAMU. A PAACT is a table of peripheral access authorization and > control entries (PAACE). > Each PAACE defines the range of I/O bus address space that is accessible by > the LIOD and the > associated access capabilities. > > There are two types of PAACTs: primary PAACT (PPAACT) and secondary PAACT > (SPAACT). A given physical > I/O device may be able to act as one or more independent logical I/O devices > (LIODs). Each such > logical I/O device is assigned an identifier called logical I/O device number > (LIODN). A LIOD is > allocated a contiguous portion of the I/O bus address space called the DSA > window for performing > DSA operations. The DSA window may optionally be divided into multiple > sub-windows, each of which > may be used to map to a region in system storage space. The first sub-window > is referred to > as the primary sub-window and the remaining are called secondary sub-windows. > > This patch provides the PAMU driver (fsl_pamu.c) and the corresponding IOMMU > API implementation > (fsl_pamu_domain.c). The PAMU hardware driver (fsl_pamu.c) has been derived > from the work done > by Ashish Kalra and Timur Tabi (ti...@freescale.com). > > Signed-off-by: Varun Sethi <varun.se...@freescale.com> > --- I'm not seeing any of the comments I made addressed. What changed in this version? - k _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
