From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45949) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YIlJK-0002AJ-N3 for qemu-devel@nongnu.org; Tue, 03 Feb 2015 16:47:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YIlJD-0002iP-L0 for qemu-devel@nongnu.org; Tue, 03 Feb 2015 16:47:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:41598) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YIlJD-0002iJ-Cp for qemu-devel@nongnu.org; Tue, 03 Feb 2015 16:46:59 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t13LkwPB029751 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Tue, 3 Feb 2015 16:46:58 -0500 From: John Snow Date: Tue, 3 Feb 2015 16:46:39 -0500 Message-Id: <1422999999-25868-20-git-send-email-jsnow@redhat.com> In-Reply-To: <1422999999-25868-1-git-send-email-jsnow@redhat.com> References: <1422999999-25868-1-git-send-email-jsnow@redhat.com> Subject: [Qemu-devel] [PATCH v2 19/19] qtest/ahci: Adding simple dma read-write test List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: famz@redhat.com, mst@redhat.com, armbru@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, John Snow Adds a test case for AHCI wherein we write a 4K block of a changing pattern to sector 0, then read back that 4K and compare the transmit and receive buffers. Signed-off-by: John Snow --- tests/ahci-test.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/tests/ahci-test.c b/tests/ahci-test.c index f595b96..ad02f33 100644 --- a/tests/ahci-test.c +++ b/tests/ahci-test.c @@ -716,6 +716,46 @@ static void ahci_test_identify(AHCIQState *ahci) g_assert_cmphex(sect_size, ==, 0x200); } +static void ahci_test_dma_rw_simple(AHCIQState *ahci) +{ + uint64_t ptr; + uint8_t px; + unsigned i; + const unsigned bufsize = 4096; + unsigned char *tx = g_malloc(bufsize); + unsigned char *rx = g_malloc0(bufsize); + + g_assert(ahci != NULL); + + /* Pick the first running port and clear it. */ + px = ahci_port_select(ahci); + ahci_port_clear(ahci, px); + + /*** Create pattern and transfer to guest ***/ + /* Data buffer in the guest */ + ptr = ahci_alloc(ahci, bufsize); + g_assert(ptr); + + /* Write some indicative pattern to our 4K buffer. */ + for (i = 0; i < bufsize; i++) { + tx[i] = (bufsize - i); + } + memwrite(ptr, tx, bufsize); + + /* Write this buffer to disk, then read it back to the DMA buffer. */ + ahci_guest_io(ahci, px, CMD_WRITE_DMA, ptr, bufsize); + qmemset(ptr, 0x00, bufsize); + ahci_guest_io(ahci, px, CMD_READ_DMA, ptr, bufsize); + + /*** Read back the Data ***/ + memread(ptr, rx, bufsize); + g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0); + + ahci_free(ahci, ptr); + g_free(tx); + g_free(rx); +} + /******************************************************************************/ /* Test Interfaces */ /******************************************************************************/ @@ -798,6 +838,20 @@ static void test_identify(void) ahci_shutdown(ahci); } +/** + * Perform a simple DMA R/W test, using a single PRD and non-NCQ commands. + */ +static void test_dma_rw_simple(void) +{ + AHCIQState *ahci; + + ahci = ahci_boot(); + ahci_pci_enable(ahci); + ahci_hba_enable(ahci); + ahci_test_dma_rw_simple(ahci); + ahci_shutdown(ahci); +} + /******************************************************************************/ int main(int argc, char **argv) @@ -853,6 +907,7 @@ int main(int argc, char **argv) qtest_add_func("/ahci/hba_spec", test_hba_spec); qtest_add_func("/ahci/hba_enable", test_hba_enable); qtest_add_func("/ahci/identify", test_identify); + qtest_add_func("/ahci/dma/simple", test_dma_rw_simple); ret = g_test_run(); -- 1.9.3