diff options
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/ahci.c | 37 | ||||
| -rw-r--r-- | hw/ide/ahci_internal.h | 2 |
2 files changed, 26 insertions, 13 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 2ec24cad9f..d700ca973b 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -801,7 +801,7 @@ static void ahci_write_fis_sdb(AHCIState *s, NCQTransferState *ncq_tfs) } } -static void ahci_write_fis_pio(AHCIDevice *ad, uint16_t len) +static void ahci_write_fis_pio(AHCIDevice *ad, uint16_t len, bool pio_fis_i) { AHCIPortRegs *pr = &ad->port_regs; uint8_t *pio_fis; @@ -814,7 +814,7 @@ static void ahci_write_fis_pio(AHCIDevice *ad, uint16_t len) pio_fis = &ad->res_fis[RES_FIS_PSFIS]; pio_fis[0] = SATA_FIS_TYPE_PIO_SETUP; - pio_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0); + pio_fis[1] = (pio_fis_i ? (1 << 6) : 0); pio_fis[2] = s->status; pio_fis[3] = s->error; @@ -842,8 +842,6 @@ static void ahci_write_fis_pio(AHCIDevice *ad, uint16_t len) if (pio_fis[2] & ERR_STAT) { ahci_trigger_irq(ad->hba, ad, AHCI_PORT_IRQ_BIT_TFES); } - - ahci_trigger_irq(ad->hba, ad, AHCI_PORT_IRQ_BIT_PSS); } static bool ahci_write_fis_d2h(AHCIDevice *ad) @@ -860,7 +858,7 @@ static bool ahci_write_fis_d2h(AHCIDevice *ad) d2h_fis = &ad->res_fis[RES_FIS_RFIS]; d2h_fis[0] = SATA_FIS_TYPE_REGISTER_D2H; - d2h_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0); + d2h_fis[1] = (1 << 6); /* interrupt bit */ d2h_fis[2] = s->status; d2h_fis[3] = s->error; @@ -1258,11 +1256,10 @@ static void handle_reg_h2d_fis(AHCIState *s, int port, trace_handle_reg_h2d_fis_dump(s, port, pretty_fis); g_free(pretty_fis); } - s->dev[port].done_atapi_packet = false; } ide_state->error = 0; - + s->dev[port].done_first_drq = false; /* Reset transferred byte counter */ cmd->status = 0; @@ -1351,13 +1348,23 @@ static void ahci_pio_transfer(IDEDMA *dma) int is_write = opts & AHCI_CMD_WRITE; int is_atapi = opts & AHCI_CMD_ATAPI; int has_sglist = 0; + bool pio_fis_i; - /* PIO FIS gets written prior to transfer */ - ahci_write_fis_pio(ad, size); + /* The PIO Setup FIS is received prior to transfer, but the interrupt + * is only triggered after data is received. + * + * The device only sets the 'I' bit in the PIO Setup FIS for device->host + * requests (see "DPIOI1" in the SATA spec), or for host->device DRQs after + * the first (see "DPIOO1"). The latter is consistent with the spec's + * description of the PACKET protocol, where the command part of ATAPI requests + * ("DPKT0") has the 'I' bit clear, while the data part of PIO ATAPI requests + * ("DPKT4a" and "DPKT7") has the 'I' bit set for both directions for all DRQs. + */ + pio_fis_i = ad->done_first_drq || (!is_atapi && !is_write); + ahci_write_fis_pio(ad, size, pio_fis_i); - if (is_atapi && !ad->done_atapi_packet) { + if (is_atapi && !ad->done_first_drq) { /* already prepopulated iobuffer */ - ad->done_atapi_packet = true; goto out; } @@ -1379,9 +1386,15 @@ static void ahci_pio_transfer(IDEDMA *dma) /* Update number of transferred bytes, destroy sglist */ dma_buf_commit(s, size); + out: /* declare that we processed everything */ s->data_ptr = s->data_end; + + ad->done_first_drq = true; + if (pio_fis_i) { + ahci_trigger_irq(ad->hba, ad, AHCI_PORT_IRQ_BIT_PSS); + } } static void ahci_start_dma(IDEDMA *dma, IDEState *s, @@ -1627,7 +1640,7 @@ static const VMStateDescription vmstate_ahci_device = { VMSTATE_UINT32(port_regs.scr_err, AHCIDevice), VMSTATE_UINT32(port_regs.scr_act, AHCIDevice), VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice), - VMSTATE_BOOL(done_atapi_packet, AHCIDevice), + VMSTATE_BOOL(done_first_drq, AHCIDevice), VMSTATE_INT32(busy_slot, AHCIDevice), VMSTATE_BOOL(init_d2h_sent, AHCIDevice), VMSTATE_STRUCT_ARRAY(ncq_tfs, AHCIDevice, AHCI_MAX_CMDS, diff --git a/hw/ide/ahci_internal.h b/hw/ide/ahci_internal.h index 2953243929..9b7fa8fc7d 100644 --- a/hw/ide/ahci_internal.h +++ b/hw/ide/ahci_internal.h @@ -315,7 +315,7 @@ struct AHCIDevice { QEMUBH *check_bh; uint8_t *lst; uint8_t *res_fis; - bool done_atapi_packet; + bool done_first_drq; int32_t busy_slot; bool init_d2h_sent; AHCICmdHdr *cur_cmd; |