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author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-06-05 16:59:22 (GMT) |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-06-26 19:10:15 (GMT) |
commit | ca4ba153f985d0c1478ccf05ac95314402bc08a7 (patch) | |
tree | 101cdcd952ae59fd42192aad4dd1b9bbfb08238e /drivers/s390 | |
parent | da5b6cb162b6bef39d76446a5e015d6a111459b1 (diff) | |
download | linux-ca4ba153f985d0c1478ccf05ac95314402bc08a7.tar.xz |
s390/qdio: cleanup chsc SADC usage
Move the code to issue the set adapter device controls command to
chsc.c and make it accessible for the qdio code via the wrapper
chsc_sadc.
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/cio/chsc.c | 37 | ||||
-rw-r--r-- | drivers/s390/cio/chsc.h | 22 | ||||
-rw-r--r-- | drivers/s390/cio/qdio.h | 20 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 48 |
4 files changed, 73 insertions, 54 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index d119d0d..13299f9 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -20,6 +20,7 @@ #include <asm/chpid.h> #include <asm/chsc.h> #include <asm/crw.h> +#include <asm/isc.h> #include "css.h" #include "cio.h" @@ -167,6 +168,42 @@ int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd) } EXPORT_SYMBOL_GPL(chsc_ssqd); +/** + * chsc_sadc() - set adapter device controls (SADC) + * @schid: id of the subchannel on which SADC is performed + * @scssc: request and response block for SADC + * @summary_indicator_addr: summary indicator address + * @subchannel_indicator_addr: subchannel indicator address + * + * Returns 0 on success. + */ +int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, + u64 summary_indicator_addr, u64 subchannel_indicator_addr) +{ + memset(scssc, 0, sizeof(*scssc)); + scssc->request.length = 0x0fe0; + scssc->request.code = 0x0021; + scssc->operation_code = 0; + + scssc->summary_indicator_addr = summary_indicator_addr; + scssc->subchannel_indicator_addr = subchannel_indicator_addr; + + scssc->ks = PAGE_DEFAULT_KEY >> 4; + scssc->kc = PAGE_DEFAULT_KEY >> 4; + scssc->isc = QDIO_AIRQ_ISC; + scssc->schid = schid; + + /* enable the time delay disablement facility */ + if (css_general_characteristics.aif_tdd) + scssc->word_with_d_bit = 0x10000000; + + if (chsc(scssc)) + return -EIO; + + return chsc_error_from_response(scssc->response.code); +} +EXPORT_SYMBOL_GPL(chsc_sadc); + static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data) { spin_lock_irq(sch->lock); diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index 2b88e74..23d072e 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -87,6 +87,26 @@ struct chsc_ssqd_area { struct qdio_ssqd_desc qdio_ssqd; } __packed; +struct chsc_scssc_area { + struct chsc_header request; + u16 operation_code; + u16:16; + u32:32; + u32:32; + u64 summary_indicator_addr; + u64 subchannel_indicator_addr; + u32 ks:4; + u32 kc:4; + u32:21; + u32 isc:3; + u32 word_with_d_bit; + u32:32; + struct subchannel_id schid; + u32 reserved[1004]; + struct chsc_header response; + u32:32; +} __packed; + struct chsc_scpd { struct chsc_header request; u32:2; @@ -127,6 +147,8 @@ void chsc_chp_online(struct chp_id chpid); void chsc_chp_offline(struct chp_id chpid); int chsc_get_channel_measurement_chars(struct channel_path *chp); int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd); +int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, + u64 summary_indicator_addr, u64 subchannel_indicator_addr); int chsc_error_from_response(int response); int chsc_siosl(struct subchannel_id schid); diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index b8bda21..8acaae1 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -140,26 +140,6 @@ struct siga_flag { u8:3; } __attribute__ ((packed)); -struct scssc_area { - struct chsc_header request; - u16 operation_code; - u16:16; - u32:32; - u32:32; - u64 summary_indicator_addr; - u64 subchannel_indicator_addr; - u32 ks:4; - u32 kc:4; - u32:21; - u32 isc:3; - u32 word_with_d_bit; - u32:32; - struct subchannel_id schid; - u32 reserved[1004]; - struct chsc_header response; - u32:32; -} __attribute__ ((packed)); - struct qdio_dev_perf_stat { unsigned int adapter_int; unsigned int qdio_int; diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index bde5255..417b255 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -208,51 +208,31 @@ static void tiqdio_thinint_handler(void *alsi, void *data) static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) { - struct scssc_area *scssc_area; + struct chsc_scssc_area *scssc = (void *)irq_ptr->chsc_page; + u64 summary_indicator_addr, subchannel_indicator_addr; int rc; - scssc_area = (struct scssc_area *)irq_ptr->chsc_page; - memset(scssc_area, 0, PAGE_SIZE); - if (reset) { - scssc_area->summary_indicator_addr = 0; - scssc_area->subchannel_indicator_addr = 0; + summary_indicator_addr = 0; + subchannel_indicator_addr = 0; } else { - scssc_area->summary_indicator_addr = virt_to_phys(tiqdio_alsi); - scssc_area->subchannel_indicator_addr = - virt_to_phys(irq_ptr->dsci); + summary_indicator_addr = virt_to_phys(tiqdio_alsi); + subchannel_indicator_addr = virt_to_phys(irq_ptr->dsci); } - scssc_area->request = (struct chsc_header) { - .length = 0x0fe0, - .code = 0x0021, - }; - scssc_area->operation_code = 0; - scssc_area->ks = PAGE_DEFAULT_KEY >> 4; - scssc_area->kc = PAGE_DEFAULT_KEY >> 4; - scssc_area->isc = QDIO_AIRQ_ISC; - scssc_area->schid = irq_ptr->schid; - - /* enable the time delay disablement facility */ - if (css_general_characteristics.aif_tdd) - scssc_area->word_with_d_bit = 0x10000000; - - rc = chsc(scssc_area); - if (rc) - return -EIO; - - rc = chsc_error_from_response(scssc_area->response.code); + rc = chsc_sadc(irq_ptr->schid, scssc, summary_indicator_addr, + subchannel_indicator_addr); if (rc) { DBF_ERROR("%4x SSI r:%4x", irq_ptr->schid.sch_no, - scssc_area->response.code); - DBF_ERROR_HEX(&scssc_area->response, sizeof(void *)); - return rc; + scssc->response.code); + goto out; } DBF_EVENT("setscind"); - DBF_HEX(&scssc_area->summary_indicator_addr, sizeof(unsigned long)); - DBF_HEX(&scssc_area->subchannel_indicator_addr, sizeof(unsigned long)); - return 0; + DBF_HEX(&summary_indicator_addr, sizeof(summary_indicator_addr)); + DBF_HEX(&subchannel_indicator_addr, sizeof(subchannel_indicator_addr)); +out: + return rc; } /* allocate non-shared indicators and shared indicator */ |