| busdma_bounce.c (117691) | busdma_bounce.c (118081) |
|---|---|
| 1/* 2 * Copyright (c) 1997, 1998 Justin T. Gibbs. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/* 2 * Copyright (c) 1997, 1998 Justin T. Gibbs. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/i386/i386/busdma_machdep.c 117691 2003-07-17 16:07:46Z scottl $"); | 28__FBSDID("$FreeBSD: head/sys/i386/i386/busdma_machdep.c 118081 2003-07-27 13:52:10Z mux $"); |
| 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/malloc.h> 33#include <sys/bus.h> 34#include <sys/interrupt.h> 35#include <sys/kernel.h> 36#include <sys/lock.h> --- 344 unchanged lines hidden (view full) --- 381 * Allocate a piece of memory that can be efficiently mapped into 382 * bus device space based on the constraints lited in the dma tag. 383 * A dmamap to for use with dmamap_load is also allocated. 384 */ 385int 386bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags, 387 bus_dmamap_t *mapp) 388{ | 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/malloc.h> 33#include <sys/bus.h> 34#include <sys/interrupt.h> 35#include <sys/kernel.h> 36#include <sys/lock.h> --- 344 unchanged lines hidden (view full) --- 381 * Allocate a piece of memory that can be efficiently mapped into 382 * bus device space based on the constraints lited in the dma tag. 383 * A dmamap to for use with dmamap_load is also allocated. 384 */ 385int 386bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags, 387 bus_dmamap_t *mapp) 388{ |
| 389 int mflags; 390 391 if (flags & BUS_DMA_NOWAIT) 392 mflags = M_NOWAIT; 393 else 394 mflags = M_WAITOK; 395 if (flags & BUS_DMA_ZERO) 396 mflags |= M_ZERO; 397 |
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| 389 /* If we succeed, no mapping/bouncing will be required */ 390 *mapp = NULL; 391 392 if ((dmat->maxsize <= PAGE_SIZE) && 393 dmat->lowaddr >= ptoa((vm_paddr_t)Maxmem)) { | 398 /* If we succeed, no mapping/bouncing will be required */ 399 *mapp = NULL; 400 401 if ((dmat->maxsize <= PAGE_SIZE) && 402 dmat->lowaddr >= ptoa((vm_paddr_t)Maxmem)) { |
| 394 *vaddr = malloc(dmat->maxsize, M_DEVBUF, 395 (flags & BUS_DMA_NOWAIT) ? M_NOWAIT : M_WAITOK); | 403 *vaddr = malloc(dmat->maxsize, M_DEVBUF, mflags); |
| 396 } else { 397 /* 398 * XXX Use Contigmalloc until it is merged into this facility 399 * and handles multi-seg allocations. Nobody is doing 400 * multi-seg allocations yet though. 401 */ | 404 } else { 405 /* 406 * XXX Use Contigmalloc until it is merged into this facility 407 * and handles multi-seg allocations. Nobody is doing 408 * multi-seg allocations yet though. 409 */ |
| 402 mtx_lock(&Giant); 403 *vaddr = contigmalloc(dmat->maxsize, M_DEVBUF, 404 (flags & BUS_DMA_NOWAIT) ? M_NOWAIT : M_WAITOK, | 410 *vaddr = contigmalloc(dmat->maxsize, M_DEVBUF, mflags, |
| 405 0ul, dmat->lowaddr, dmat->alignment? dmat->alignment : 1ul, 406 dmat->boundary); | 411 0ul, dmat->lowaddr, dmat->alignment? dmat->alignment : 1ul, 412 dmat->boundary); |
| 407 mtx_unlock(&Giant); | |
| 408 } 409 if (*vaddr == NULL) 410 return (ENOMEM); 411 return (0); 412} 413 414/* 415 * Free a piece of memory and it's allociated dmamap, that was allocated --- 384 unchanged lines hidden (view full) --- 800 while (numpages > 0) { 801 struct bounce_page *bpage; 802 803 bpage = (struct bounce_page *)malloc(sizeof(*bpage), M_DEVBUF, 804 M_NOWAIT | M_ZERO); 805 806 if (bpage == NULL) 807 break; | 413 } 414 if (*vaddr == NULL) 415 return (ENOMEM); 416 return (0); 417} 418 419/* 420 * Free a piece of memory and it's allociated dmamap, that was allocated --- 384 unchanged lines hidden (view full) --- 805 while (numpages > 0) { 806 struct bounce_page *bpage; 807 808 bpage = (struct bounce_page *)malloc(sizeof(*bpage), M_DEVBUF, 809 M_NOWAIT | M_ZERO); 810 811 if (bpage == NULL) 812 break; |
| 808 mtx_lock(&Giant); | |
| 809 bpage->vaddr = (vm_offset_t)contigmalloc(PAGE_SIZE, M_DEVBUF, 810 M_NOWAIT, 0ul, 811 dmat->lowaddr, 812 PAGE_SIZE, 813 dmat->boundary); | 813 bpage->vaddr = (vm_offset_t)contigmalloc(PAGE_SIZE, M_DEVBUF, 814 M_NOWAIT, 0ul, 815 dmat->lowaddr, 816 PAGE_SIZE, 817 dmat->boundary); |
| 814 mtx_unlock(&Giant); | |
| 815 if (bpage->vaddr == 0) { 816 free(bpage, M_DEVBUF); 817 break; 818 } 819 bpage->busaddr = pmap_kextract(bpage->vaddr); 820 mtx_lock(&bounce_lock); 821 STAILQ_INSERT_TAIL(&bounce_page_list, bpage, links); 822 total_bpages++; --- 101 unchanged lines hidden --- | 818 if (bpage->vaddr == 0) { 819 free(bpage, M_DEVBUF); 820 break; 821 } 822 bpage->busaddr = pmap_kextract(bpage->vaddr); 823 mtx_lock(&bounce_lock); 824 STAILQ_INSERT_TAIL(&bounce_page_list, bpage, links); 825 total_bpages++; --- 101 unchanged lines hidden --- |