Date: Sun, 6 Dec 2009 23:56:54 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r200196 - head/sys/dev/ahci Message-ID: <200912062356.nB6NusBb035620@svn.freebsd.org>
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Author: mav Date: Sun Dec 6 23:56:54 2009 New Revision: 200196 URL: http://svn.freebsd.org/changeset/base/200196 Log: Add Asynchronous Notification support for controllers without SNTF capability by snooping SDB FIS receive area. It should be even faster then regular way, but less reliable. Modified: head/sys/dev/ahci/ahci.c Modified: head/sys/dev/ahci/ahci.c ============================================================================== --- head/sys/dev/ahci/ahci.c Sun Dec 6 23:51:27 2009 (r200195) +++ head/sys/dev/ahci/ahci.c Sun Dec 6 23:56:54 2009 (r200196) @@ -1129,7 +1129,8 @@ ahci_notify_events(device_t dev, u_int32 struct cam_path *dpath; int i; - ATA_OUTL(ch->r_mem, AHCI_P_SNTF, status); + if (ch->caps & AHCI_CAP_SSNTF) + ATA_OUTL(ch->r_mem, AHCI_P_SNTF, status); if (bootverbose) device_printf(dev, "SNTF 0x%04x\n", status); for (i = 0; i < 16; i++) { @@ -1188,8 +1189,16 @@ ahci_ch_intr(void *data) /* Read command statuses. */ sstatus = ATA_INL(ch->r_mem, AHCI_P_SACT); cstatus = ATA_INL(ch->r_mem, AHCI_P_CI); - if ((istatus & AHCI_P_IX_SDB) && (ch->caps & AHCI_CAP_SSNTF)) - sntf = ATA_INL(ch->r_mem, AHCI_P_SNTF); + if (istatus & AHCI_P_IX_SDB) { + if (ch->caps & AHCI_CAP_SSNTF) + sntf = ATA_INL(ch->r_mem, AHCI_P_SNTF); + else { + u_int8_t *fis = ch->dma.rfis + 0x58; + + if (fis[1] & 0x80) + sntf = (1 << (fis[1] & 0x0f)); + } + } /* Process PHY events */ if (istatus & (AHCI_P_IX_PC | AHCI_P_IX_PRC | AHCI_P_IX_OF | AHCI_P_IX_IF | AHCI_P_IX_HBD | AHCI_P_IX_HBF | AHCI_P_IX_TFE)) {
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