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libqos/ahci: Add ahci_guest_io 

ahci_guest_io is a shorthand function that will, in one shot,
execute a data command on the guest to the specified guest buffer
location, in the requested amount.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1423158090-25580-16-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
John Snow 2015-02-05 12:41:26 -05:00 committed by Stefan Hajnoczi
parent cbc97569dc
commit 113221956c
2 changed files with 17 additions and 0 deletions
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15
tests/libqos/ahci.c
View File

@ -548,6 +548,21 @@ inline unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd)
return (bytes + bytes_per_prd - 1) / bytes_per_prd;
}
/* Given a guest buffer address, perform an IO operation */
void ahci_guest_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
uint64_t buffer, size_t bufsize)
{
AHCICommand *cmd;
cmd = ahci_command_create(ide_cmd);
ahci_command_set_buffer(cmd, buffer);
ahci_command_set_size(cmd, bufsize);
ahci_command_commit(ahci, cmd, port);
ahci_command_issue(ahci, cmd);
ahci_command_verify(ahci, cmd);
ahci_command_free(cmd);
}
struct AHCICommand {
/* Test Management Data */
uint8_t name;

2
tests/libqos/ahci.h
View File

@ -521,6 +521,8 @@ void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_write_fis(AHCIQState *ahci, RegH2DFIS *fis, uint64_t addr);
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port);
unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd);
void ahci_guest_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
uint64_t gbuffer, size_t size);
/* Command Lifecycle */
AHCICommand *ahci_command_create(uint8_t command_name);