diff options
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/ahci.c | 42 |
1 files changed, 15 insertions, 27 deletions
diff --git a/sys/dev/pci/ahci.c b/sys/dev/pci/ahci.c index a610761e77d..29bd1c3ac3d 100644 --- a/sys/dev/pci/ahci.c +++ b/sys/dev/pci/ahci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ahci.c,v 1.67 2007/03/05 09:13:44 dlg Exp $ */ +/* $OpenBSD: ahci.c,v 1.68 2007/03/06 05:38:55 pascoe Exp $ */ /* * Copyright (c) 2006 David Gwynne <dlg@openbsd.org> @@ -280,7 +280,7 @@ struct ahci_prdt { #define AHCI_PRDT_FLAG_INTR (1<<31) /* interrupt on completion */ } __packed; -/* this makes ahci_cmd_table 512 bytes, which is good for alignment */ +/* this makes ahci_cmd_table 512 bytes, supporting 128-byte alignment */ #define AHCI_MAX_PRDT 24 struct ahci_cmd_table { @@ -312,6 +312,7 @@ struct ahci_ccb { struct ata_xfer *ccb_xa; + struct ahci_cmd_hdr *ccb_cmd_hdr; struct ahci_cmd_table *ccb_cmd_table; u_int64_t ccb_cmd_table_dva; @@ -327,7 +328,6 @@ struct ahci_port { struct ahci_rfis *ap_rfis; struct ahci_dmamem *ap_dmamem_rfis; - struct ahci_cmd_hdr *ap_cmd_list; struct ahci_dmamem *ap_dmamem_cmd_list; struct ahci_dmamem *ap_dmamem_cmd_table; @@ -710,7 +710,6 @@ ahci_port_alloc(struct ahci_softc *sc, u_int port) { struct ahci_port *ap; struct ahci_ccb *ccb; - u_int8_t *kva; u_int64_t dva; int i, rc = ENOMEM; u_int32_t cmd; @@ -766,9 +765,8 @@ ahci_port_alloc(struct ahci_softc *sc, u_int port) goto nomem; /* Setup RFIS base address */ - kva = AHCI_DMA_KVA(ap->ap_dmamem_rfis); + ap->ap_rfis = (struct ahci_rfis *) AHCI_DMA_KVA(ap->ap_dmamem_rfis); dva = AHCI_DMA_DVA(ap->ap_dmamem_rfis); - ap->ap_rfis = (struct ahci_rfis *)kva; ahci_pwrite(ap, AHCI_PREG_FBU, htole32((u_int32_t)(dva >> 32))); ahci_pwrite(ap, AHCI_PREG_FB, htole32((u_int32_t)dva)); @@ -807,16 +805,12 @@ nomem: } /* Setup command list base address */ - kva = AHCI_DMA_KVA(ap->ap_dmamem_cmd_list); dva = AHCI_DMA_DVA(ap->ap_dmamem_cmd_list); - ap->ap_cmd_list = (struct ahci_cmd_hdr *)kva; ahci_pwrite(ap, AHCI_PREG_CLBU, htole32((u_int32_t)(dva >> 32))); ahci_pwrite(ap, AHCI_PREG_CLB, htole32((u_int32_t)dva)); - /* Split CCB allocation into CCBs and assign command table entries */ + /* Split CCB allocation into CCBs and assign to command header/table */ TAILQ_INIT(&ap->ap_ccb_free); - kva = AHCI_DMA_KVA(ap->ap_dmamem_cmd_table); - dva = AHCI_DMA_DVA(ap->ap_dmamem_cmd_table); for (i = 0; i < sc->sc_ncmds; i++) { ccb = &ap->ap_ccbs[i]; @@ -827,17 +821,14 @@ nomem: goto freeport; } - /* - * NB: ahci_start assumes a 1:1 mapping of CCB slot number - * to command slot and command table positions in its - * bus_dmasync_calls. - */ ccb->ccb_slot = i; ccb->ccb_port = ap; - ccb->ccb_cmd_table = (struct ahci_cmd_table *) - (kva + i * sizeof(struct ahci_cmd_table)); - ccb->ccb_cmd_table_dva = - dva + i * sizeof(struct ahci_cmd_table); + ccb->ccb_cmd_hdr = AHCI_DMA_KVA(ap->ap_dmamem_cmd_list) + + ccb->ccb_slot * sizeof(struct ahci_cmd_hdr); + ccb->ccb_cmd_table = AHCI_DMA_KVA(ap->ap_dmamem_cmd_table) + + ccb->ccb_slot * sizeof(struct ahci_cmd_table); + ccb->ccb_cmd_table_dva = AHCI_DMA_DVA(ap->ap_dmamem_cmd_table) + + ccb->ccb_slot * sizeof(struct ahci_cmd_table); ahci_put_ccb(ap, ccb); } @@ -1064,8 +1055,7 @@ ahci_port_softreset(struct ahci_port *ap) bzero(&xa, sizeof(struct ata_xfer)); xa.flags = ATA_F_POLL | ATA_F_WRITE; ccb->ccb_xa = &xa; - cmd_slot = &ap->ap_cmd_list[ccb->ccb_slot]; - bzero(cmd_slot, sizeof(struct ahci_cmd_hdr)); + cmd_slot = ccb->ccb_cmd_hdr; bzero(ccb->ccb_cmd_table, sizeof(struct ahci_cmd_table)); fis = ccb->ccb_cmd_table->cfis; @@ -1086,8 +1076,7 @@ ahci_port_softreset(struct ahci_port *ap) bzero(&xa, sizeof(struct ata_xfer)); xa.flags = ATA_F_POLL | ATA_F_WRITE; ccb->ccb_xa = &xa; - cmd_slot = &ap->ap_cmd_list[ccb->ccb_slot]; - bzero(cmd_slot, sizeof(struct ahci_cmd_hdr)); + cmd_slot = ccb->ccb_cmd_hdr; bzero(ccb->ccb_cmd_table, sizeof(struct ahci_cmd_table)); fis = ccb->ccb_cmd_table->cfis; @@ -1205,7 +1194,7 @@ ahci_load_prdt(struct ahci_ccb *ccb, struct ata_xfer *xa) } prd->flags |= htole32(AHCI_PRDT_FLAG_INTR); - cmd_slot = &ap->ap_cmd_list[ccb->ccb_slot]; + cmd_slot = ccb->ccb_cmd_hdr; cmd_slot->prdtl = htole16(ccb->ccb_dmamap->dm_nsegs); cmd_slot->prdbc = 0; @@ -1228,7 +1217,6 @@ ahci_start(struct ahci_ccb *ccb) bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_cmd_list), ccb->ccb_slot * sizeof(struct ahci_cmd_hdr), sizeof(struct ahci_cmd_hdr), BUS_DMASYNC_PREWRITE); - /* NB this assumes a 1:1 mapping of ccb slot to command table entry */ bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_cmd_table), ccb->ccb_slot * sizeof(struct ahci_cmd_table), sizeof(struct ahci_cmd_table), BUS_DMASYNC_PREWRITE); @@ -1464,7 +1452,7 @@ ahci_ata_cmd(void *xsc, struct ata_xfer *xa) return (ATA_ERROR); ccb->ccb_xa = xa; - cmd_slot = &ap->ap_cmd_list[ccb->ccb_slot]; + cmd_slot = ccb->ccb_cmd_hdr; bzero(cmd_slot, sizeof(struct ahci_cmd_hdr)); bzero(ccb->ccb_cmd_table, sizeof(struct ahci_cmd_table)); |