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Add checksums to identify data and NCQ command error log.

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MFC after:	2 weeks
This commit is contained in:
Alexander Motin 2015-03-14 14:06:37 +00:00
parent 59966d51c6
commit df57ec4933
1 changed files with 16 additions and 0 deletions
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16
usr.sbin/bhyve/pci_ahci.c
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@ -793,6 +793,17 @@ write_prdt(struct ahci_port *p, int slot, uint8_t *cfis,
hdr->prdbc = size - len;
}
static void
ahci_checksum(uint8_t *buf, int size)
{
int i;
uint8_t sum = 0;
for (i = 0; i < size - 1; i++)
sum += buf[i];
buf[size - 1] = 0x100 - sum;
}
static void
ahci_handle_read_log(struct ahci_port *p, int slot, uint8_t *cfis)
{
@ -809,6 +820,7 @@ ahci_handle_read_log(struct ahci_port *p, int slot, uint8_t *cfis)
memset(buf, 0, sizeof(buf));
memcpy(buf, p->err_cfis, sizeof(p->err_cfis));
ahci_checksum(buf, sizeof(buf));
if (cfis[2] == ATA_READ_LOG_EXT)
ahci_write_fis_piosetup(p);
@ -914,6 +926,8 @@ handle_identify(struct ahci_port *p, int slot, uint8_t *cfis)
buf[119] = (ATA_SUPPORT_RWLOGDMAEXT | 1 << 14);
buf[120] = (ATA_SUPPORT_RWLOGDMAEXT | 1 << 14);
buf[222] = 0x1020;
buf[255] = 0x00a5;
ahci_checksum((uint8_t *)buf, sizeof(buf));
ahci_write_fis_piosetup(p);
write_prdt(p, slot, cfis, (void *)buf, sizeof(buf));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_DSC | ATA_S_READY);
@ -962,6 +976,8 @@ handle_atapi_identify(struct ahci_port *p, int slot, uint8_t *cfis)
if (p->xfermode & ATA_UDMA0)
buf[88] |= (1 << ((p->xfermode & 7) + 8));
buf[222] = 0x1020;
buf[255] = 0x00a5;
ahci_checksum((uint8_t *)buf, sizeof(buf));
ahci_write_fis_piosetup(p);
write_prdt(p, slot, cfis, (void *)buf, sizeof(buf));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_DSC | ATA_S_READY);