| ata-dma.c (45554) | ata-dma.c (45720) |
|---|---|
| 1/*- 2 * Copyright (c) 1998,1999 S�ren Schmidt 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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * | 1/*- 2 * Copyright (c) 1998,1999 S�ren Schmidt 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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * |
| 28 * $Id: ata-dma.c,v 1.3 1999/03/30 13:09:47 sos Exp $ | 28 * $Id: ata-dma.c,v 1.4 1999/04/10 18:53:35 sos Exp $ |
| 29 */ 30 31#include "ata.h" 32#include "pci.h" 33#if NATA > 0 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/buf.h> 38#include <sys/malloc.h> 39#include <vm/vm.h> 40#include <vm/pmap.h> 41#include <pci/pcivar.h> 42#include <pci/pcireg.h> 43#include <dev/ata/ata-all.h> 44 | 29 */ 30 31#include "ata.h" 32#include "pci.h" 33#if NATA > 0 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/buf.h> 38#include <sys/malloc.h> 39#include <vm/vm.h> 40#include <vm/pmap.h> 41#include <pci/pcivar.h> 42#include <pci/pcireg.h> 43#include <dev/ata/ata-all.h> 44 |
| 45#ifdef __alpha__ 46#undef vtophys 47#define vtophys(va) (pmap_kextract(((vm_offset_t) (va))) \ 48 + 1*1024*1024*1024) 49#endif 50 |
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| 45/* misc defines */ 46#define MIN(a,b) ((a)>(b)?(b):(a)) 47 48#if NPCI > 0 49 50int32_t 51ata_dmainit(struct ata_softc *scp, int32_t device, 52 int32_t apiomode, int32_t wdmamode, int32_t udmamode) --- 6 unchanged lines hidden (view full) --- 59#ifdef ATA_DEBUGDMA 60 printf("ata%d: dmainit: ioaddr=0x%x altioaddr=0x%x, bmaddr=0x%x\n", 61 scp->lun, scp->ioaddr, scp->altioaddr, scp->bmaddr); 62#endif 63 64 if (!(dmatab = malloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT))) 65 return -1; 66 | 51/* misc defines */ 52#define MIN(a,b) ((a)>(b)?(b):(a)) 53 54#if NPCI > 0 55 56int32_t 57ata_dmainit(struct ata_softc *scp, int32_t device, 58 int32_t apiomode, int32_t wdmamode, int32_t udmamode) --- 6 unchanged lines hidden (view full) --- 65#ifdef ATA_DEBUGDMA 66 printf("ata%d: dmainit: ioaddr=0x%x altioaddr=0x%x, bmaddr=0x%x\n", 67 scp->lun, scp->ioaddr, scp->altioaddr, scp->bmaddr); 68#endif 69 70 if (!(dmatab = malloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT))) 71 return -1; 72 |
| 67 if (((int)dmatab>>PAGE_SHIFT)^(((int)dmatab+PAGE_SIZE-1)>>PAGE_SHIFT)) { | 73 if (((uintptr_t)dmatab>>PAGE_SHIFT)^(((uintptr_t)dmatab+PAGE_SIZE-1)>>PAGE_SHIFT)) { |
| 68 printf("ata_dmainit: dmatab crosses page boundary, no DMA\n"); 69 free(dmatab, M_DEVBUF); 70 return -1; 71 } 72 scp->dmatab[device ? 1 : 0] = dmatab; 73 74 type = pci_conf_read(scp->tag, PCI_ID_REG); 75 --- 171 unchanged lines hidden (view full) --- 247{ 248 struct ata_dmaentry *dmatab; 249 u_int32_t dma_count, dma_base; 250 int32_t i = 0; 251 252#ifdef ATA_DEBUGDMA 253 printf("ata%d: dmasetup\n", scp->lun); 254#endif | 74 printf("ata_dmainit: dmatab crosses page boundary, no DMA\n"); 75 free(dmatab, M_DEVBUF); 76 return -1; 77 } 78 scp->dmatab[device ? 1 : 0] = dmatab; 79 80 type = pci_conf_read(scp->tag, PCI_ID_REG); 81 --- 171 unchanged lines hidden (view full) --- 253{ 254 struct ata_dmaentry *dmatab; 255 u_int32_t dma_count, dma_base; 256 int32_t i = 0; 257 258#ifdef ATA_DEBUGDMA 259 printf("ata%d: dmasetup\n", scp->lun); 260#endif |
| 255 if (((u_int32_t)data & 1) || (count & 1)) | 261 if (((uintptr_t)data & 1) || (count & 1)) |
| 256 return -1; 257 258 if (!count) { 259 printf("ata%d: zero length DMA transfer attempt on %s\n", 260 scp->lun, (device ? "slave" : "master")); 261 return -1; 262 } 263 264 dmatab = scp->dmatab[device ? 1 : 0]; 265 dma_base = vtophys(data); | 262 return -1; 263 264 if (!count) { 265 printf("ata%d: zero length DMA transfer attempt on %s\n", 266 scp->lun, (device ? "slave" : "master")); 267 return -1; 268 } 269 270 dmatab = scp->dmatab[device ? 1 : 0]; 271 dma_base = vtophys(data); |
| 266 dma_count = MIN(count, (PAGE_SIZE - ((u_int32_t)data & PAGE_MASK))); | 272 dma_count = MIN(count, (PAGE_SIZE - ((uintptr_t)data & PAGE_MASK))); |
| 267 data += dma_count; 268 count -= dma_count; 269 270 while (count) { 271 dmatab[i].base = dma_base; 272 dmatab[i].count = (dma_count & 0xffff); 273 i++; 274 if (i >= ATA_DMA_ENTRIES) { --- 91 unchanged lines hidden --- | 273 data += dma_count; 274 count -= dma_count; 275 276 while (count) { 277 dmatab[i].base = dma_base; 278 dmatab[i].count = (dma_count & 0xffff); 279 i++; 280 if (i >= ATA_DMA_ENTRIES) { --- 91 unchanged lines hidden --- |