From: Cornelia Huck <cohuck@redhat.com>
To: Pierre Morel <pmorel@linux.ibm.com>
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
frankja@linux.ibm.com, david@redhat.com, thuth@redhat.com
Subject: Re: [kvm-unit-tests PATCH v2 9/9] s390x: css: ping pong
Date: Mon, 2 Dec 2019 16:03:41 +0100 [thread overview]
Message-ID: <20191202160341.5e96fb81.cohuck@redhat.com> (raw)
In-Reply-To: <1574945167-29677-10-git-send-email-pmorel@linux.ibm.com>
On Thu, 28 Nov 2019 13:46:07 +0100
Pierre Morel <pmorel@linux.ibm.com> wrote:
> To test a write command with the SSCH instruction we need a QEMU device,
> with control unit type 0xC0CA. The PONG device is such a device.
"We want to test some read/write ccws via the SSCH instruction with a
QEMU device with control unit type 0xC0CA." ?
>
> This type of device respond to PONG_WRITE requests by incrementing an
s/respond/responds/
> integer, stored as a string at offset 0 of the CCW data.
>
> This is only a success test, no error expected.
Nobody expects the Spanish Inquisition^W^W^W an error :)
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
> s390x/css.c | 46 +++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 45 insertions(+), 1 deletion(-)
>
> diff --git a/s390x/css.c b/s390x/css.c
> index 534864f..0761e70 100644
> --- a/s390x/css.c
> +++ b/s390x/css.c
> @@ -23,6 +23,10 @@
> #define SID_ONE 0x00010000
> #define PSW_PRG_MASK (PSW_MASK_IO | PSW_MASK_EA | PSW_MASK_BA)
>
> +/* Local Channel Commands */
/* Channel commands for the PONG device */
?
> +#define PONG_WRITE 0x21 /* Write */
> +#define PONG_READ 0x22 /* Read buffer */
> +
> struct lowcore *lowcore = (void *)0x0;
>
> static struct schib schib;
> @@ -31,7 +35,8 @@ static struct ccw ccw[NB_CCW];
> #define NB_ORB 100
> static struct orb orb[NB_ORB];
> static struct irb irb;
> -static char buffer[0x1000] __attribute__ ((aligned(8)));
> +#define BUF_SZ 0x1000
> +static char buffer[BUF_SZ] __attribute__ ((aligned(8)));
Merge this with the introduction of this variable?
> static struct senseid senseid;
>
> static const char *Channel_type[3] = {
> @@ -224,6 +229,44 @@ static void test_sense(void)
> report("cu_type: expect c0ca, got %04x", 0, senseid.cu_type);
> }
>
> +static void test_ping(void)
> +{
> + int success, result;
> + int cnt = 0, max = 4;
> +
> + if (senseid.cu_type != PONG_CU) {
> + report_skip("No PONG, no ping-pong");
:D
> + return;
> + }
> +
> + enable_io_irq();
Hasn't that been enabled already for doing SenseID?
> +
> + while (cnt++ < max) {
> +report_info("cnt..: %08x", cnt);
Wrong indentation?
> + snprintf(buffer, BUF_SZ, "%08x\n", cnt);
> + success = start_subchannel(PONG_WRITE, buffer, 8);
> + if (!success) {
> + report("start_subchannel failed", 0);
> + return;
> + }
> + delay(100);
> + success = start_subchannel(PONG_READ, buffer, 8);
> + if (!success) {
> + report("start_subchannel failed", 0);
> + return;
> + }
> + result = atol(buffer);
> + if (result != (cnt + 1)) {
> + report("Bad answer from pong: %08x - %08x", 0, cnt, result);
> + return;
> + } else
> + report_info("%08x - %08x", cnt, result);
> +
> + delay(100);
> + }
> + report("ping-pong count 0x%08x", 1, cnt);
> +}
> +
> static struct {
> const char *name;
> void (*func)(void);
> @@ -231,6 +274,7 @@ static struct {
> { "enumerate (stsch)", test_enumerate },
> { "enable (msch)", test_enable },
> { "sense (ssch/tsch)", test_sense },
> + { "ping-pong (ssch/tsch)", test_ping },
> { NULL, NULL }
> };
>
next prev parent reply other threads:[~2019-12-02 15:03 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 12:45 [kvm-unit-tests PATCH v2 0/9] s390x: Testing the Channel Subsystem I/O Pierre Morel
2019-11-28 12:45 ` [kvm-unit-tests PATCH v2 1/9] s390x: saving regs for interrupts Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 2/9] s390x: Define the PSW bits Pierre Morel
2019-11-28 14:36 ` David Hildenbrand
2019-11-28 19:16 ` Pierre Morel
2019-11-28 19:48 ` David Hildenbrand
2019-11-29 13:04 ` Pierre Morel
2019-12-02 11:11 ` Janosch Frank
2019-12-02 11:17 ` David Hildenbrand
2019-12-02 16:52 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 3/9] s390x: irq: make IRQ handler weak Pierre Morel
2019-11-29 12:01 ` David Hildenbrand
2019-12-02 10:41 ` Thomas Huth
2019-12-02 16:55 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 4/9] s390x: export the clock get_clock_ms() utility Pierre Morel
2019-11-29 12:03 ` David Hildenbrand
2019-11-29 13:04 ` Pierre Morel
2019-12-02 11:13 ` Janosch Frank
2019-12-02 17:03 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 5/9] s390x: Library resources for CSS tests Pierre Morel
2019-12-02 14:06 ` Cornelia Huck
2019-12-02 17:33 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 6/9] s390x: css: stsch, enumeration test Pierre Morel
2019-12-02 14:22 ` Cornelia Huck
2019-12-02 17:53 ` Pierre Morel
2019-12-02 18:15 ` Cornelia Huck
2019-12-02 18:33 ` Pierre Morel
2019-12-02 19:49 ` Cornelia Huck
2019-12-03 8:43 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 7/9] s390x: css: msch, enable test Pierre Morel
2019-12-02 14:30 ` Cornelia Huck
2019-12-02 17:55 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 8/9] s390x: css: ssch/tsch with sense and interrupt Pierre Morel
2019-12-02 14:55 ` Cornelia Huck
2019-12-02 18:18 ` Pierre Morel
2019-12-02 19:54 ` Cornelia Huck
2019-12-03 8:58 ` Pierre Morel
2019-11-28 12:46 ` [kvm-unit-tests PATCH v2 9/9] s390x: css: ping pong Pierre Morel
2019-12-02 15:03 ` Cornelia Huck [this message]
2019-12-02 18:25 ` Pierre Morel
2019-12-06 14:18 ` Pierre Morel
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