diff options
Diffstat (limited to 'drivers/s390/cio/chsc.h')
| -rw-r--r-- | drivers/s390/cio/chsc.h | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h new file mode 100644 index 000000000..32fa7faa5 --- /dev/null +++ b/drivers/s390/cio/chsc.h @@ -0,0 +1,223 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef S390_CHSC_H +#define S390_CHSC_H + +#include <linux/types.h> +#include <linux/device.h> +#include <asm/css_chars.h> +#include <asm/chpid.h> +#include <asm/chsc.h> +#include <asm/schid.h> +#include <asm/qdio.h> + +#define CHSC_SDA_OC_MSS 0x2 + +#define NR_MEASUREMENT_CHARS 5 +struct cmg_chars { + u32 values[NR_MEASUREMENT_CHARS]; +}; + +#define NR_MEASUREMENT_ENTRIES 8 +struct cmg_entry { + u32 values[NR_MEASUREMENT_ENTRIES]; +}; + +struct channel_path_desc_fmt1 { + u8 flags; + u8 lsn; + u8 desc; + u8 chpid; + u32:16; + u8 esc; + u8 chpp; + u32 unused[2]; + u16 chid; + u32:16; + u16 mdc; + u16:13; + u8 r:1; + u8 s:1; + u8 f:1; + u32 zeros[2]; +}; + +struct channel_path_desc_fmt3 { + struct channel_path_desc_fmt1 fmt1_desc; + u8 util_str[64]; +}; + +struct channel_path; + +struct css_chsc_char { + u64 res; + u64 : 20; + u32 secm : 1; /* bit 84 */ + u32 : 1; + u32 scmc : 1; /* bit 86 */ + u32 : 20; + u32 scssc : 1; /* bit 107 */ + u32 scsscf : 1; /* bit 108 */ + u32:7; + u32 pnso:1; /* bit 116 */ + u32:11; +} __packed; + +extern struct css_chsc_char css_chsc_characteristics; + +struct chsc_ssd_info { + u8 path_mask; + u8 fla_valid_mask; + struct chp_id chpid[8]; + u16 fla[8]; +}; + +struct chsc_ssqd_area { + struct chsc_header request; + u16:10; + u8 ssid:2; + u8 fmt:4; + u16 first_sch; + u16:16; + u16 last_sch; + u32:32; + struct chsc_header response; + u32:32; + struct qdio_ssqd_desc qdio_ssqd; +} __packed __aligned(PAGE_SIZE); + +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 __aligned(PAGE_SIZE); + +struct chsc_scpd { + struct chsc_header request; + u32:2; + u32 m:1; + u32 c:1; + u32 fmt:4; + u32 cssid:8; + u32:4; + u32 rfmt:4; + u32 first_chpid:8; + u32:24; + u32 last_chpid:8; + u32 zeroes1; + struct chsc_header response; + u32:32; + u8 data[0]; +} __packed __aligned(PAGE_SIZE); + +struct chsc_sda_area { + struct chsc_header request; + u8 :4; + u8 format:4; + u8 :8; + u16 operation_code; + u32 :32; + u32 :32; + u32 operation_data_area[252]; + struct chsc_header response; + u32 :4; + u32 format2:4; + u32 :24; +} __packed __aligned(PAGE_SIZE); + +extern int chsc_get_ssd_info(struct subchannel_id schid, + struct chsc_ssd_info *ssd); +extern int chsc_determine_css_characteristics(void); +extern int chsc_init(void); +extern void chsc_init_cleanup(void); + +int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code); +extern int chsc_enable_facility(int); +struct channel_subsystem; +extern int chsc_secm(struct channel_subsystem *, int); +int __chsc_do_secm(struct channel_subsystem *css, int enable); + +int chsc_chp_vary(struct chp_id chpid, int on); +int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, + int c, int m, void *page); +int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid, + struct channel_path_desc_fmt0 *desc); +int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, + struct channel_path_desc_fmt1 *desc); +int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid, + struct channel_path_desc_fmt3 *desc); +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, + u8 isc); +int chsc_sgib(u32 origin); +int chsc_error_from_response(int response); + +int chsc_siosl(struct subchannel_id schid); + +/* Functions and definitions to query storage-class memory. */ +struct sale { + u64 sa; + u32 p:4; + u32 op_state:4; + u32 data_state:4; + u32 rank:4; + u32 r:1; + u32:7; + u32 rid:8; + u32:32; +} __packed; + +struct chsc_scm_info { + struct chsc_header request; + u32:32; + u64 reqtok; + u32 reserved1[4]; + struct chsc_header response; + u64:56; + u8 rq; + u32 mbc; + u64 msa; + u16 is; + u16 mmc; + u32 mci; + u64 nr_scm_ini; + u64 nr_scm_unini; + u32 reserved2[10]; + u64 restok; + struct sale scmal[248]; +} __packed __aligned(PAGE_SIZE); + +int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); + +int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area, + u8 oc, struct chsc_pnso_resume_token resume_token, int cnc); + +int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid); + +#ifdef CONFIG_SCM_BUS +int scm_update_information(void); +int scm_process_availability_information(void); +#else /* CONFIG_SCM_BUS */ +static inline int scm_update_information(void) { return 0; } +static inline int scm_process_availability_information(void) { return 0; } +#endif /* CONFIG_SCM_BUS */ + + +#endif |