On 3/18/21 2:26 PM, Pierre Morel wrote:
> Checking error response on various eroneous SSCH instructions:
> - ORB alignment
> - ORB above 2G
> - CCW above 2G
> - bad ORB flags
>
> Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
> ---
> s390x/css.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 102 insertions(+)
>
> diff --git a/s390x/css.c b/s390x/css.c
> index a6a9773..1c891f8 100644
> --- a/s390x/css.c
> +++ b/s390x/css.c
> @@ -51,6 +51,107 @@ static void test_enable(void)
> report(cc == 0, "Enable subchannel %08x", test_device_sid);
> }
>
> +static void test_ssch(void)
> +{
> + struct orb orb = {
> + .intparm = test_device_sid,
> + .ctrl = ORB_CTRL_ISIC | ORB_CTRL_FMT | ORB_LPM_DFLT,
> + };
> + int i;
> + phys_addr_t base, top;
> +
> + assert(css_enable(test_device_sid, IO_SCH_ISC) == 0);
> + assert(register_io_int_func(css_irq_io) == 0);
> +
> + /* ORB address should be aligned on 32 bits */
> + report_prefix_push("ORB alignment");
> + expect_pgm_int();
> + ssch(test_device_sid, (void *)0x110002);
> + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION);
> + report_prefix_pop();
> +
> + /* ORB address should be lower than 2G */
> + report_prefix_push("ORB Address above 2G");
> + expect_pgm_int();
> + ssch(test_device_sid, (void *)0x80000000);
> + check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
> + report_prefix_pop();
> +
> + phys_alloc_get_unused(&base, &top);
> + report_info("base %08lx, top %08lx", base, top);
Please use this function from lib/s390x/sclp.c
uint64_t get_ram_size(void)
{
return ram_size;
}
> +
> + /* ORB address should be available we check 1G*/
> + report_prefix_push("ORB Address must be available");
> + if (top < 0x40000000) {
> + expect_pgm_int();
> + ssch(test_device_sid, (void *)0x40000000);
> + check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
> + } else {
> + report_skip("guest started with more than 1G memory");
> + }
> + report_prefix_pop();
> +
> + report_prefix_push("CCW address above 2G");
> + orb.cpa = 0x80000000;
> + expect_pgm_int();
> + ssch(test_device_sid, &orb);
> + check_pgm_int_code(PGM_INT_CODE_OPERAND);
> + report_prefix_pop();
> +
> + senseid = alloc_io_mem(sizeof(*senseid), 0);
> + assert(senseid);
> + orb.cpa = (uint64_t)ccw_alloc(CCW_CMD_SENSE_ID, senseid,
> + sizeof(*senseid), CCW_F_SLI);
> + assert(orb.cpa);
> +
> + report_prefix_push("Disabled subchannel");
> + assert(css_disable(test_device_sid) == 0);
> + report(ssch(test_device_sid, &orb) == 3, "CC = 3");
> + assert(css_enable(test_device_sid, IO_SCH_ISC) == 0);
> + report_prefix_pop();
> +
> + /*
> + * Check sending a second SSCH before clearing the status with TSCH
> + * the subchannel is left disabled.
If a second SSCH is sent before clearing via TSCH the subchannel is
disabled by firmware? Did I get that right?
> + */
> + report_prefix_push("SSCH on channel with status pending");
> + assert(css_enable(test_device_sid, IO_SCH_ISC) == 0);
> + assert(ssch(test_device_sid, &orb) == 0);
> + report(ssch(test_device_sid, &orb) == 1, "CC = 1");
> + /* now we clear the status */
> + assert(wait_and_check_io_completion(test_device_sid, SCSW_FC_START) == 0);
> + assert(css_disable(test_device_sid) == 0);
> + report_prefix_pop();
> +
> + report_prefix_push("ORB MIDAW unsupported");
> + assert(css_enable(test_device_sid, IO_SCH_ISC) == 0);
> + orb.ctrl |= ORB_CTRL_MIDAW;
> + expect_pgm_int();
> + ssch(test_device_sid, &orb);
> + check_pgm_int_code(PGM_INT_CODE_OPERAND);
> + report_prefix_pop();
> + orb.ctrl = 0;
> +
> + for (i = 0; i < 5; i++) {
> + char buffer[30];
> +
> + orb.ctrl = (0x02 << i);
> + snprintf(buffer, 30, "ORB reserved ctrl flags %02x", orb.ctrl);
> + report_prefix_push(buffer);
> + expect_pgm_int();
> + ssch(test_device_sid, &orb);
> + check_pgm_int_code(PGM_INT_CODE_OPERAND);
> + report_prefix_pop();
> + }
> +
> + report_prefix_push("ORB wrong ctrl flags");
> + orb.ctrl |= 0x040000;
> + expect_pgm_int();
> + ssch(test_device_sid, &orb);
> + check_pgm_int_code(PGM_INT_CODE_OPERAND);
> + report_prefix_pop();
> +}
> +
> /*
> * test_sense
> * Pre-requisites:
> @@ -339,6 +440,7 @@ static struct {
> { "initialize CSS (chsc)", css_init },
> { "enumerate (stsch)", test_enumerate },
> { "enable (msch)", test_enable },
> + { "start subchannel", test_ssch },
> { "sense (ssch/tsch)", test_sense },
> { "measurement block (schm)", test_schm },
> { "measurement block format0", test_schm_fmt0 },
>
