git: 560406982489 - main - busdma: deduplicate _bus_dmamap_addseg() function
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Date: Tue, 07 May 2024 16:04:25 UTC
The branch main has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=560406982489cf067f586fcae87bbd31eafe9456 commit 560406982489cf067f586fcae87bbd31eafe9456 Author: Mitchell Horne <mhorne@FreeBSD.org> AuthorDate: 2024-02-14 17:01:15 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2024-05-07 16:02:57 +0000 busdma: deduplicate _bus_dmamap_addseg() function It is functionally identical in all implementations, so move the function to subr_busdma_bounce.c. The KASSERT present in the x86 version is now enabled for all architectures. It should be universally applicable. Reviewed by: jhb MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D45047 --- sys/arm/arm/busdma_machdep.c | 45 +++---------------------------- sys/arm64/arm64/busdma_bounce.c | 45 +++---------------------------- sys/kern/subr_busdma_bounce.c | 48 +++++++++++++++++++++++++++++++++ sys/powerpc/powerpc/busdma_machdep.c | 45 +++---------------------------- sys/riscv/riscv/busdma_bounce.c | 45 +++---------------------------- sys/x86/x86/busdma_bounce.c | 52 +++--------------------------------- 6 files changed, 68 insertions(+), 212 deletions(-) diff --git a/sys/arm/arm/busdma_machdep.c b/sys/arm/arm/busdma_machdep.c index 44bc96bed734..17cde2e60e37 100644 --- a/sys/arm/arm/busdma_machdep.c +++ b/sys/arm/arm/busdma_machdep.c @@ -168,11 +168,15 @@ static busdma_bufalloc_t standard_allocator; /* Cache of standard buffers */ MALLOC_DEFINE(M_BUSDMA, "busdma", "busdma metadata"); #define dmat_alignment(dmat) ((dmat)->alignment) +#define dmat_bounce_flags(dmat) (0) +#define dmat_boundary(dmat) ((dmat)->boundary) #define dmat_flags(dmat) ((dmat)->flags) #define dmat_highaddr(dmat) ((dmat)->highaddr) #define dmat_lowaddr(dmat) ((dmat)->lowaddr) #define dmat_lockfunc(dmat) ((dmat)->lockfunc) #define dmat_lockfuncarg(dmat) ((dmat)->lockfuncarg) +#define dmat_maxsegsz(dmat) ((dmat)->maxsegsz) +#define dmat_nsegments(dmat) ((dmat)->nsegments) #include "../../kern/subr_busdma_bounce.c" @@ -842,47 +846,6 @@ _bus_dmamap_count_pages(bus_dma_tag_t dmat, pmap_t pmap, bus_dmamap_t map, } } -/* - * Add a single contiguous physical range to the segment list. - */ -static int -_bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr, - bus_size_t sgsize, bus_dma_segment_t *segs, int *segp) -{ - int seg; - - /* - * Make sure we don't cross any boundaries. - */ - if (!vm_addr_bound_ok(curaddr, sgsize, dmat->boundary)) - sgsize = roundup2(curaddr, dmat->boundary) - curaddr; - - /* - * Insert chunk into a segment, coalescing with - * previous segment if possible. - */ - seg = *segp; - if (seg == -1) { - seg = 0; - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } else { - if (curaddr == segs[seg].ds_addr + segs[seg].ds_len && - (segs[seg].ds_len + sgsize) <= dmat->maxsegsz && - vm_addr_bound_ok(segs[seg].ds_addr, - segs[seg].ds_len + sgsize, dmat->boundary)) - segs[seg].ds_len += sgsize; - else { - if (++seg >= dmat->nsegments) - return (0); - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } - } - *segp = seg; - return (sgsize); -} - /* * Utility function to load a physical buffer. segp contains * the starting segment on entrace, and the ending segment on exit. diff --git a/sys/arm64/arm64/busdma_bounce.c b/sys/arm64/arm64/busdma_bounce.c index e62794da2753..385e26e3bd8e 100644 --- a/sys/arm64/arm64/busdma_bounce.c +++ b/sys/arm64/arm64/busdma_bounce.c @@ -121,12 +121,16 @@ static void _bus_dmamap_count_phys(bus_dma_tag_t dmat, bus_dmamap_t map, static MALLOC_DEFINE(M_BUSDMA, "busdma", "busdma metadata"); #define dmat_alignment(dmat) ((dmat)->common.alignment) +#define dmat_bounce_flags(dmat) ((dmat)->bounce_flags) +#define dmat_boundary(dmat) ((dmat)->common.boundary) #define dmat_domain(dmat) ((dmat)->common.domain) #define dmat_flags(dmat) ((dmat)->common.flags) #define dmat_highaddr(dmat) ((dmat)->common.highaddr) #define dmat_lowaddr(dmat) ((dmat)->common.lowaddr) #define dmat_lockfunc(dmat) ((dmat)->common.lockfunc) #define dmat_lockfuncarg(dmat) ((dmat)->common.lockfuncarg) +#define dmat_maxsegsz(dmat) ((dmat)->common.maxsegsz) +#define dmat_nsegments(dmat) ((dmat)->common.nsegments) #include "../../kern/subr_busdma_bounce.c" @@ -711,47 +715,6 @@ _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, pmap_t pmap, } } -/* - * Add a single contiguous physical range to the segment list. - */ -static bus_size_t -_bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr, - bus_size_t sgsize, bus_dma_segment_t *segs, int *segp) -{ - int seg; - - /* - * Make sure we don't cross any boundaries. - */ - if (!vm_addr_bound_ok(curaddr, sgsize, dmat->common.boundary)) - sgsize = roundup2(curaddr, dmat->common.boundary) - curaddr; - - /* - * Insert chunk into a segment, coalescing with - * previous segment if possible. - */ - seg = *segp; - if (seg == -1) { - seg = 0; - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } else { - if (curaddr == segs[seg].ds_addr + segs[seg].ds_len && - (segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz && - vm_addr_bound_ok(segs[seg].ds_addr, - segs[seg].ds_len + sgsize, dmat->common.boundary)) - segs[seg].ds_len += sgsize; - else { - if (++seg >= dmat->common.nsegments) - return (0); - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } - } - *segp = seg; - return (sgsize); -} - /* * Utility function to load a physical buffer. segp contains * the starting segment on entrace, and the ending segment on exit. diff --git a/sys/kern/subr_busdma_bounce.c b/sys/kern/subr_busdma_bounce.c index 77b1b358758f..a9cddcb3f39f 100644 --- a/sys/kern/subr_busdma_bounce.c +++ b/sys/kern/subr_busdma_bounce.c @@ -451,6 +451,54 @@ free_bounce_pages(bus_dma_tag_t dmat, bus_dmamap_t map) wakeup(&bounce_map_callbacklist); } +/* + * Add a single contiguous physical range to the segment list. + */ +static bus_size_t +_bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr, + bus_size_t sgsize, bus_dma_segment_t *segs, int *segp) +{ + int seg; + + KASSERT(curaddr <= BUS_SPACE_MAXADDR, + ("ds_addr %#jx > BUS_SPACE_MAXADDR %#jx; dmat %p fl %#x low %#jx " + "hi %#jx", + (uintmax_t)curaddr, (uintmax_t)BUS_SPACE_MAXADDR, + dmat, dmat_bounce_flags(dmat), (uintmax_t)dmat_lowaddr(dmat), + (uintmax_t)dmat_highaddr(dmat))); + + /* + * Make sure we don't cross any boundaries. + */ + if (!vm_addr_bound_ok(curaddr, sgsize, dmat_boundary(dmat))) + sgsize = roundup2(curaddr, dmat_boundary(dmat)) - curaddr; + + /* + * Insert chunk into a segment, coalescing with + * previous segment if possible. + */ + seg = *segp; + if (seg == -1) { + seg = 0; + segs[seg].ds_addr = curaddr; + segs[seg].ds_len = sgsize; + } else { + if (curaddr == segs[seg].ds_addr + segs[seg].ds_len && + (segs[seg].ds_len + sgsize) <= dmat_maxsegsz(dmat) && + vm_addr_bound_ok(segs[seg].ds_addr, + segs[seg].ds_len + sgsize, dmat_boundary(dmat))) + segs[seg].ds_len += sgsize; + else { + if (++seg >= dmat_nsegments(dmat)) + return (0); + segs[seg].ds_addr = curaddr; + segs[seg].ds_len = sgsize; + } + } + *segp = seg; + return (sgsize); +} + static void busdma_thread(void *dummy __unused) { diff --git a/sys/powerpc/powerpc/busdma_machdep.c b/sys/powerpc/powerpc/busdma_machdep.c index bc28619372f0..fad22d49a7f5 100644 --- a/sys/powerpc/powerpc/busdma_machdep.c +++ b/sys/powerpc/powerpc/busdma_machdep.c @@ -100,11 +100,15 @@ struct bus_dmamap { static MALLOC_DEFINE(M_BUSDMA, "busdma", "busdma metadata"); #define dmat_alignment(dmat) ((dmat)->alignment) +#define dmat_bounce_flags(dmat) (0) +#define dmat_boundary(dmat) ((dmat)->boundary) #define dmat_flags(dmat) ((dmat)->flags) #define dmat_highaddr(dmat) ((dmat)->highaddr) #define dmat_lowaddr(dmat) ((dmat)->lowaddr) #define dmat_lockfunc(dmat) ((dmat)->lockfunc) #define dmat_lockfuncarg(dmat) ((dmat)->lockfuncarg) +#define dmat_maxsegsz(dmat) ((dmat)->maxsegsz) +#define dmat_nsegments(dmat) ((dmat)->nsegments) #include "../../kern/subr_busdma_bounce.c" @@ -535,47 +539,6 @@ _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, pmap_t pmap, } } -/* - * Add a single contiguous physical range to the segment list. - */ -static int -_bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr, - bus_size_t sgsize, bus_dma_segment_t *segs, int *segp) -{ - int seg; - - /* - * Make sure we don't cross any boundaries. - */ - if (!vm_addr_bound_ok(curaddr, sgsize, dmat->boundary)) - sgsize = roundup2(curaddr, dmat->boundary) - curaddr; - - /* - * Insert chunk into a segment, coalescing with - * previous segment if possible. - */ - seg = *segp; - if (seg == -1) { - seg = 0; - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } else { - if (curaddr == segs[seg].ds_addr + segs[seg].ds_len && - (segs[seg].ds_len + sgsize) <= dmat->maxsegsz && - vm_addr_bound_ok(segs[seg].ds_addr, - segs[seg].ds_len + sgsize, dmat->boundary)) - segs[seg].ds_len += sgsize; - else { - if (++seg >= dmat->nsegments) - return (0); - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } - } - *segp = seg; - return (sgsize); -} - /* * Utility function to load a physical buffer. segp contains * the starting segment on entrace, and the ending segment on exit. diff --git a/sys/riscv/riscv/busdma_bounce.c b/sys/riscv/riscv/busdma_bounce.c index e504b122ebd1..cb0d7ea29ecd 100644 --- a/sys/riscv/riscv/busdma_bounce.c +++ b/sys/riscv/riscv/busdma_bounce.c @@ -111,11 +111,15 @@ static void _bus_dmamap_count_phys(bus_dma_tag_t dmat, bus_dmamap_t map, static MALLOC_DEFINE(M_BUSDMA, "busdma", "busdma metadata"); #define dmat_alignment(dmat) ((dmat)->common.alignment) +#define dmat_bounce_flags(dmat) ((dmat)->bounce_flags) +#define dmat_boundary(dmat) ((dmat)->common.boundary) #define dmat_flags(dmat) ((dmat)->common.flags) #define dmat_highaddr(dmat) ((dmat)->common.highaddr) #define dmat_lowaddr(dmat) ((dmat)->common.lowaddr) #define dmat_lockfunc(dmat) ((dmat)->common.lockfunc) #define dmat_lockfuncarg(dmat) ((dmat)->common.lockfuncarg) +#define dmat_maxsegsz(dmat) ((dmat)->common.maxsegsz) +#define dmat_nsegments(dmat) ((dmat)->common.nsegments) #include "../../kern/subr_busdma_bounce.c" @@ -547,47 +551,6 @@ _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, pmap_t pmap, } } -/* - * Add a single contiguous physical range to the segment list. - */ -static bus_size_t -_bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, bus_addr_t curaddr, - bus_size_t sgsize, bus_dma_segment_t *segs, int *segp) -{ - int seg; - - /* - * Make sure we don't cross any boundaries. - */ - if (!vm_addr_bound_ok(curaddr, sgsize, dmat->common.boundary)) - sgsize = roundup2(curaddr, dmat->common.boundary) - curaddr; - - /* - * Insert chunk into a segment, coalescing with - * previous segment if possible. - */ - seg = *segp; - if (seg == -1) { - seg = 0; - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } else { - if (curaddr == segs[seg].ds_addr + segs[seg].ds_len && - (segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz && - vm_addr_bound_ok(segs[seg].ds_addr, - segs[seg].ds_len + sgsize, dmat->common.boundary)) - segs[seg].ds_len += sgsize; - else { - if (++seg >= dmat->common.nsegments) - return (0); - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } - } - *segp = seg; - return (sgsize); -} - /* * Utility function to load a physical buffer. segp contains * the starting segment on entrace, and the ending segment on exit. diff --git a/sys/x86/x86/busdma_bounce.c b/sys/x86/x86/busdma_bounce.c index ef96f5ba7bdc..07fbfd6dffcb 100644 --- a/sys/x86/x86/busdma_bounce.c +++ b/sys/x86/x86/busdma_bounce.c @@ -108,12 +108,16 @@ static void _bus_dmamap_count_phys(bus_dma_tag_t dmat, bus_dmamap_t map, static MALLOC_DEFINE(M_BUSDMA, "busdma", "busdma metadata"); #define dmat_alignment(dmat) ((dmat)->common.alignment) +#define dmat_bounce_flags(dmat) ((dmat)->bounce_flags) +#define dmat_boundary(dmat) ((dmat)->common.boundary) #define dmat_domain(dmat) ((dmat)->common.domain) #define dmat_flags(dmat) ((dmat)->common.flags) #define dmat_highaddr(dmat) ((dmat)->common.highaddr) #define dmat_lowaddr(dmat) ((dmat)->common.lowaddr) #define dmat_lockfunc(dmat) ((dmat)->common.lockfunc) #define dmat_lockfuncarg(dmat) ((dmat)->common.lockfuncarg) +#define dmat_maxsegsz(dmat) ((dmat)->common.maxsegsz) +#define dmat_nsegments(dmat) ((dmat)->common.nsegments) #include "../../kern/subr_busdma_bounce.c" @@ -622,54 +626,6 @@ _bus_dmamap_count_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma, } } -/* - * Add a single contiguous physical range to the segment list. - */ -static bus_size_t -_bus_dmamap_addseg(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t curaddr, - bus_size_t sgsize, bus_dma_segment_t *segs, int *segp) -{ - int seg; - - KASSERT(curaddr <= BUS_SPACE_MAXADDR, - ("ds_addr %#jx > BUS_SPACE_MAXADDR %#jx; dmat %p fl %#x low %#jx " - "hi %#jx", - (uintmax_t)curaddr, (uintmax_t)BUS_SPACE_MAXADDR, - dmat, dmat->bounce_flags, (uintmax_t)dmat->common.lowaddr, - (uintmax_t)dmat->common.highaddr)); - - /* - * Make sure we don't cross any boundaries. - */ - if (!vm_addr_bound_ok(curaddr, sgsize, dmat->common.boundary)) - sgsize = roundup2(curaddr, dmat->common.boundary) - curaddr; - - /* - * Insert chunk into a segment, coalescing with - * previous segment if possible. - */ - seg = *segp; - if (seg == -1) { - seg = 0; - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } else { - if (curaddr == segs[seg].ds_addr + segs[seg].ds_len && - (segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz && - vm_addr_bound_ok(segs[seg].ds_addr, - segs[seg].ds_len + sgsize, dmat->common.boundary)) - segs[seg].ds_len += sgsize; - else { - if (++seg >= dmat->common.nsegments) - return (0); - segs[seg].ds_addr = curaddr; - segs[seg].ds_len = sgsize; - } - } - *segp = seg; - return (sgsize); -} - /* * Utility function to load a physical buffer. segp contains * the starting segment on entrace, and the ending segment on exit.