mirror of https://github.com/xqemu/xqemu.git
libqos/ahci: Add ahci_port_select helper
This helper identifies which port of the AHCI HBA has a device we may run tests on. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-2-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -662,7 +662,7 @@ static void ahci_test_identify(AHCIQState *ahci)
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RegH2DFIS fis;
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RegH2DFIS fis;
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AHCICommand cmd;
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AHCICommand cmd;
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PRD prd;
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PRD prd;
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uint32_t ports, reg, table, data_ptr;
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uint32_t reg, table, data_ptr;
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uint16_t buff[256];
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uint16_t buff[256];
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unsigned i;
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unsigned i;
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int rc;
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int rc;
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@ -684,22 +684,7 @@ static void ahci_test_identify(AHCIQState *ahci)
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*/
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*/
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/* Pick the first implemented and running port */
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/* Pick the first implemented and running port */
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ports = ahci_rreg(ahci, AHCI_PI);
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i = ahci_port_select(ahci);
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for (i = 0; i < 32; ports >>= 1, ++i) {
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if (ports == 0) {
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i = 32;
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}
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if (!(ports & 0x01)) {
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continue;
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}
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reg = ahci_px_rreg(ahci, i, AHCI_PX_CMD);
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if (BITSET(reg, AHCI_PX_CMD_ST)) {
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break;
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}
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}
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g_assert_cmphex(i, <, 32);
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g_test_message("Selected port %u for test", i);
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g_test_message("Selected port %u for test", i);
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/* Clear out this port's interrupts (ignore the init register d2h fis) */
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/* Clear out this port's interrupts (ignore the init register d2h fis) */
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@ -267,3 +267,30 @@ void ahci_hba_enable(AHCIQState *ahci)
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* In the future, a small test-case to inspect the Register D2H FIS
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* In the future, a small test-case to inspect the Register D2H FIS
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* and clear the initial interrupts might be good. */
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* and clear the initial interrupts might be good. */
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}
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}
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/**
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* Pick the first implemented and running port
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*/
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unsigned ahci_port_select(AHCIQState *ahci)
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{
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uint32_t ports, reg;
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unsigned i;
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ports = ahci_rreg(ahci, AHCI_PI);
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for (i = 0; i < 32; ports >>= 1, ++i) {
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if (ports == 0) {
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i = 32;
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}
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if (!(ports & 0x01)) {
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continue;
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}
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reg = ahci_px_rreg(ahci, i, AHCI_PX_CMD);
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if (BITSET(reg, AHCI_PX_CMD_ST)) {
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break;
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}
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}
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g_assert(i < 32);
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return i;
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}
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@ -431,5 +431,6 @@ void free_ahci_device(QPCIDevice *dev);
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void ahci_pci_enable(AHCIQState *ahci);
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void ahci_pci_enable(AHCIQState *ahci);
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void start_ahci_device(AHCIQState *ahci);
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void start_ahci_device(AHCIQState *ahci);
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void ahci_hba_enable(AHCIQState *ahci);
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void ahci_hba_enable(AHCIQState *ahci);
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unsigned ahci_port_select(AHCIQState *ahci);
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#endif
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#endif
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