Il 15/09/2014 18:31, John Snow ha scritto:
On 09/13/2014 03:50 PM, Paolo Bonzini wrote:
Il 13/09/2014 15:26, Paolo Bonzini ha scritto:
+if (ad-dp_intr_req) {
+ahci_trigger_irq(ad-hba, ad, PORT_IRQ_SG_DONE);
+ad-dp_intr_req = 0;
+}
Is it also needed in the error
On 09/13/2014 09:26 AM, Paolo Bonzini wrote:
Il 13/09/2014 06:34, John Snow ha scritto:
AHCI devices support a feature where individual entries in the
scatter-gather list may have interrupt request bits set, in order
to receive notification partway through a command that a portion
of a
On 09/13/2014 03:50 PM, Paolo Bonzini wrote:
Il 13/09/2014 15:26, Paolo Bonzini ha scritto:
+if (ad-dp_intr_req) {
+ahci_trigger_irq(ad-hba, ad, PORT_IRQ_SG_DONE);
+ad-dp_intr_req = 0;
+}
Is it also needed in the error case? Especially the short-PRDT case
that you
Il 13/09/2014 06:34, John Snow ha scritto:
AHCI devices support a feature where individual entries in the
scatter-gather list may have interrupt request bits set, in order
to receive notification partway through a command that a portion
of a transfer has completed. AHCI specs refer to this as
Il 13/09/2014 15:26, Paolo Bonzini ha scritto:
+if (ad-dp_intr_req) {
+ahci_trigger_irq(ad-hba, ad, PORT_IRQ_SG_DONE);
+ad-dp_intr_req = 0;
+}
Is it also needed in the error case? Especially the short-PRDT case
that you are adding in the next patch.
...
AHCI devices support a feature where individual entries in the
scatter-gather list may have interrupt request bits set, in order
to receive notification partway through a command that a portion
of a transfer has completed. AHCI specs refer to this as the
DPS bit or Descriptor Processed Status. It
