| busdma_machdep-v4.c (188350) | busdma_machdep-v4.c (188403) |
|---|---|
| 1/*- 2 * Copyright (c) 2004 Olivier Houchard 3 * Copyright (c) 2002 Peter Grehan 4 * Copyright (c) 1997, 1998 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 15 unchanged lines hidden (view full) --- 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * From i386/busdma_machdep.c,v 1.26 2002/04/19 22:58:09 alfred 29 */ 30 31#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2004 Olivier Houchard 3 * Copyright (c) 2002 Peter Grehan 4 * Copyright (c) 1997, 1998 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 15 unchanged lines hidden (view full) --- 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * From i386/busdma_machdep.c,v 1.26 2002/04/19 22:58:09 alfred 29 */ 30 31#include <sys/cdefs.h> |
| 32__FBSDID("$FreeBSD: head/sys/arm/arm/busdma_machdep.c 188350 2009-02-08 22:54:58Z imp $"); | 32__FBSDID("$FreeBSD: head/sys/arm/arm/busdma_machdep.c 188403 2009-02-09 18:03:31Z cognet $"); |
| 33 34/* 35 * ARM bus dma support routines 36 */ 37 38#define _ARM32_BUS_DMA_PRIVATE 39#include <sys/param.h> 40#include <sys/systm.h> --- 66 unchanged lines hidden (view full) --- 107 STAILQ_ENTRY(bounce_zone) links; 108 STAILQ_HEAD(bp_list, bounce_page) bounce_page_list; 109 int total_bpages; 110 int free_bpages; 111 int reserved_bpages; 112 int active_bpages; 113 int total_bounced; 114 int total_deferred; | 33 34/* 35 * ARM bus dma support routines 36 */ 37 38#define _ARM32_BUS_DMA_PRIVATE 39#include <sys/param.h> 40#include <sys/systm.h> --- 66 unchanged lines hidden (view full) --- 107 STAILQ_ENTRY(bounce_zone) links; 108 STAILQ_HEAD(bp_list, bounce_page) bounce_page_list; 109 int total_bpages; 110 int free_bpages; 111 int reserved_bpages; 112 int active_bpages; 113 int total_bounced; 114 int total_deferred; |
| 115 int map_count; |
|
| 115 bus_size_t alignment; 116 bus_size_t boundary; 117 bus_addr_t lowaddr; 118 char zoneid[8]; 119 char lowaddrid[20]; 120 struct sysctl_ctx_list sysctl_tree; 121 struct sysctl_oid *sysctl_tree_top; 122}; --- 395 unchanged lines hidden (view full) --- 518 STAILQ_INIT(&((*mapp)->bpages)); 519 520 /* 521 * Attempt to add pages to our pool on a per-instance 522 * basis up to a sane limit. 523 */ 524 maxpages = MAX_BPAGES; 525 if ((dmat->flags & BUS_DMA_MIN_ALLOC_COMP) == 0 | 116 bus_size_t alignment; 117 bus_size_t boundary; 118 bus_addr_t lowaddr; 119 char zoneid[8]; 120 char lowaddrid[20]; 121 struct sysctl_ctx_list sysctl_tree; 122 struct sysctl_oid *sysctl_tree_top; 123}; --- 395 unchanged lines hidden (view full) --- 519 STAILQ_INIT(&((*mapp)->bpages)); 520 521 /* 522 * Attempt to add pages to our pool on a per-instance 523 * basis up to a sane limit. 524 */ 525 maxpages = MAX_BPAGES; 526 if ((dmat->flags & BUS_DMA_MIN_ALLOC_COMP) == 0 |
| 526 || (dmat->map_count > 0 && bz->total_bpages < maxpages)) { | 527 || (bz->map_count > 0 && bz->total_bpages < maxpages)) { |
| 527 int pages; 528 529 pages = MAX(atop(dmat->maxsize), 1); 530 pages = MIN(maxpages - bz->total_bpages, pages); 531 pages = MAX(pages, 1); 532 if (alloc_bounce_pages(dmat, pages) < pages) 533 error = ENOMEM; 534 535 if ((dmat->flags & BUS_DMA_MIN_ALLOC_COMP) == 0) { 536 if (error == 0) 537 dmat->flags |= BUS_DMA_MIN_ALLOC_COMP; 538 } else { 539 error = 0; 540 } 541 } | 528 int pages; 529 530 pages = MAX(atop(dmat->maxsize), 1); 531 pages = MIN(maxpages - bz->total_bpages, pages); 532 pages = MAX(pages, 1); 533 if (alloc_bounce_pages(dmat, pages) < pages) 534 error = ENOMEM; 535 536 if ((dmat->flags & BUS_DMA_MIN_ALLOC_COMP) == 0) { 537 if (error == 0) 538 dmat->flags |= BUS_DMA_MIN_ALLOC_COMP; 539 } else { 540 error = 0; 541 } 542 } |
| 543 bz->map_count++; |
|
| 542 } 543 CTR4(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d", 544 __func__, dmat, dmat->flags, error); 545 546 return (0); 547} 548 549/* --- 5 unchanged lines hidden (view full) --- 555{ 556 557 _busdma_free_dmamap(map); 558 if (STAILQ_FIRST(&map->bpages) != NULL) { 559 CTR3(KTR_BUSDMA, "%s: tag %p error %d", 560 __func__, dmat, EBUSY); 561 return (EBUSY); 562 } | 544 } 545 CTR4(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d", 546 __func__, dmat, dmat->flags, error); 547 548 return (0); 549} 550 551/* --- 5 unchanged lines hidden (view full) --- 557{ 558 559 _busdma_free_dmamap(map); 560 if (STAILQ_FIRST(&map->bpages) != NULL) { 561 CTR3(KTR_BUSDMA, "%s: tag %p error %d", 562 __func__, dmat, EBUSY); 563 return (EBUSY); 564 } |
| 565 if (dmat->bounce_zone) 566 dmat->bounce_zone->map_count--; |
|
| 563 dmat->map_count--; 564 CTR2(KTR_BUSDMA, "%s: tag %p error 0", __func__, dmat); 565 return (0); 566} 567 568/* 569 * Allocate a piece of memory that can be efficiently mapped into 570 * bus device space based on the constraints lited in the dma tag. --- 701 unchanged lines hidden (view full) --- 1272 1273 STAILQ_INIT(&bz->bounce_page_list); 1274 bz->free_bpages = 0; 1275 bz->reserved_bpages = 0; 1276 bz->active_bpages = 0; 1277 bz->lowaddr = dmat->lowaddr; 1278 bz->alignment = dmat->alignment; 1279 bz->boundary = dmat->boundary; | 567 dmat->map_count--; 568 CTR2(KTR_BUSDMA, "%s: tag %p error 0", __func__, dmat); 569 return (0); 570} 571 572/* 573 * Allocate a piece of memory that can be efficiently mapped into 574 * bus device space based on the constraints lited in the dma tag. --- 701 unchanged lines hidden (view full) --- 1276 1277 STAILQ_INIT(&bz->bounce_page_list); 1278 bz->free_bpages = 0; 1279 bz->reserved_bpages = 0; 1280 bz->active_bpages = 0; 1281 bz->lowaddr = dmat->lowaddr; 1282 bz->alignment = dmat->alignment; 1283 bz->boundary = dmat->boundary; |
| 1284 bz->map_count = 0; |
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| 1280 snprintf(bz->zoneid, 8, "zone%d", busdma_zonecount); 1281 busdma_zonecount++; 1282 snprintf(bz->lowaddrid, 18, "%#jx", (uintmax_t)bz->lowaddr); 1283 STAILQ_INSERT_TAIL(&bounce_zone_list, bz, links); 1284 dmat->bounce_zone = bz; 1285 1286 sysctl_ctx_init(&bz->sysctl_tree); 1287 bz->sysctl_tree_top = SYSCTL_ADD_NODE(&bz->sysctl_tree, --- 191 unchanged lines hidden --- | 1285 snprintf(bz->zoneid, 8, "zone%d", busdma_zonecount); 1286 busdma_zonecount++; 1287 snprintf(bz->lowaddrid, 18, "%#jx", (uintmax_t)bz->lowaddr); 1288 STAILQ_INSERT_TAIL(&bounce_zone_list, bz, links); 1289 dmat->bounce_zone = bz; 1290 1291 sysctl_ctx_init(&bz->sysctl_tree); 1292 bz->sysctl_tree_top = SYSCTL_ADD_NODE(&bz->sysctl_tree, --- 191 unchanged lines hidden --- |