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![Heiko Carstens](/assets/img/avatar_default.png)
In order to be able to setup the cpu to node mappings early it is a prerequisite to know which cpus are present. Therefore cpus must be detected much earlier than before. For sclp based cpu detection this requires yet another early sclp call, since the system is not ready to use the regular interrupt and memory allocations. Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
264 lines
7.7 KiB
C
264 lines
7.7 KiB
C
/*
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* Copyright IBM Corp. 1999,2012
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*
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* Author(s): Martin Peschke <mpeschke@de.ibm.com>
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef __SCLP_H__
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#define __SCLP_H__
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#include <linux/types.h>
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#include <linux/list.h>
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#include <asm/sclp.h>
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#include <asm/ebcdic.h>
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/* maximum number of pages concerning our own memory management */
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#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
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#define SCLP_CONSOLE_PAGES 6
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#define SCLP_EVTYP_MASK(T) (1U << (32 - (T)))
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#define EVTYP_OPCMD 0x01
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#define EVTYP_MSG 0x02
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#define EVTYP_CONFMGMDATA 0x04
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#define EVTYP_DIAG_TEST 0x07
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#define EVTYP_STATECHANGE 0x08
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#define EVTYP_PMSGCMD 0x09
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#define EVTYP_ASYNC 0x0A
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#define EVTYP_CTLPROGIDENT 0x0B
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#define EVTYP_ERRNOTIFY 0x18
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#define EVTYP_VT220MSG 0x1A
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#define EVTYP_SDIAS 0x1C
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#define EVTYP_SIGQUIESCE 0x1D
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#define EVTYP_OCF 0x1E
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#define EVTYP_OPCMD_MASK SCLP_EVTYP_MASK(EVTYP_OPCMD)
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#define EVTYP_MSG_MASK SCLP_EVTYP_MASK(EVTYP_MSG)
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#define EVTYP_CONFMGMDATA_MASK SCLP_EVTYP_MASK(EVTYP_CONFMGMDATA)
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#define EVTYP_DIAG_TEST_MASK SCLP_EVTYP_MASK(EVTYP_DIAG_TEST)
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#define EVTYP_STATECHANGE_MASK SCLP_EVTYP_MASK(EVTYP_STATECHANGE)
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#define EVTYP_PMSGCMD_MASK SCLP_EVTYP_MASK(EVTYP_PMSGCMD)
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#define EVTYP_ASYNC_MASK SCLP_EVTYP_MASK(EVTYP_ASYNC)
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#define EVTYP_CTLPROGIDENT_MASK SCLP_EVTYP_MASK(EVTYP_CTLPROGIDENT)
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#define EVTYP_ERRNOTIFY_MASK SCLP_EVTYP_MASK(EVTYP_ERRNOTIFY)
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#define EVTYP_VT220MSG_MASK SCLP_EVTYP_MASK(EVTYP_VT220MSG)
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#define EVTYP_SDIAS_MASK SCLP_EVTYP_MASK(EVTYP_SDIAS)
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#define EVTYP_SIGQUIESCE_MASK SCLP_EVTYP_MASK(EVTYP_SIGQUIESCE)
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#define EVTYP_OCF_MASK SCLP_EVTYP_MASK(EVTYP_OCF)
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#define GNRLMSGFLGS_DOM 0x8000
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#define GNRLMSGFLGS_SNDALRM 0x4000
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#define GNRLMSGFLGS_HOLDMSG 0x2000
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#define LNTPFLGS_CNTLTEXT 0x8000
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#define LNTPFLGS_LABELTEXT 0x4000
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#define LNTPFLGS_DATATEXT 0x2000
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#define LNTPFLGS_ENDTEXT 0x1000
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#define LNTPFLGS_PROMPTTEXT 0x0800
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typedef unsigned int sclp_cmdw_t;
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#define SCLP_CMDW_READ_CPU_INFO 0x00010001
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#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
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#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
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#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
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#define GDS_ID_MDSMU 0x1310
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#define GDS_ID_MDSROUTEINFO 0x1311
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#define GDS_ID_AGUNWRKCORR 0x1549
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#define GDS_ID_SNACONDREPORT 0x1532
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#define GDS_ID_CPMSU 0x1212
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#define GDS_ID_ROUTTARGINSTR 0x154D
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#define GDS_ID_OPREQ 0x8070
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#define GDS_ID_TEXTCMD 0x1320
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#define GDS_KEY_SELFDEFTEXTMSG 0x31
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enum sclp_pm_event {
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SCLP_PM_EVENT_FREEZE,
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SCLP_PM_EVENT_THAW,
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SCLP_PM_EVENT_RESTORE,
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};
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#define SCLP_PANIC_PRIO 1
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#define SCLP_PANIC_PRIO_CLIENT 0
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typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
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struct sccb_header {
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u16 length;
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u8 function_code;
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u8 control_mask[3];
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u16 response_code;
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} __attribute__((packed));
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struct init_sccb {
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struct sccb_header header;
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u16 _reserved;
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u16 mask_length;
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sccb_mask_t receive_mask;
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sccb_mask_t send_mask;
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sccb_mask_t sclp_receive_mask;
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sccb_mask_t sclp_send_mask;
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} __attribute__((packed));
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struct read_cpu_info_sccb {
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struct sccb_header header;
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u16 nr_configured;
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u16 offset_configured;
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u16 nr_standby;
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u16 offset_standby;
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u8 reserved[4096 - 16];
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} __attribute__((packed, aligned(PAGE_SIZE)));
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static inline void sclp_fill_core_info(struct sclp_core_info *info,
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struct read_cpu_info_sccb *sccb)
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{
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char *page = (char *) sccb;
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memset(info, 0, sizeof(*info));
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info->configured = sccb->nr_configured;
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info->standby = sccb->nr_standby;
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info->combined = sccb->nr_configured + sccb->nr_standby;
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memcpy(&info->core, page + sccb->offset_configured,
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info->combined * sizeof(struct sclp_core_entry));
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}
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#define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL)
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#define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL)
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#define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL)
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#define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL)
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#define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL)
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struct gds_subvector {
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u8 length;
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u8 key;
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} __attribute__((packed));
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struct gds_vector {
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u16 length;
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u16 gds_id;
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} __attribute__((packed));
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struct evbuf_header {
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u16 length;
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u8 type;
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u8 flags;
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u16 _reserved;
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} __attribute__((packed));
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struct sclp_req {
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struct list_head list; /* list_head for request queueing. */
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sclp_cmdw_t command; /* sclp command to execute */
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void *sccb; /* pointer to the sccb to execute */
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char status; /* status of this request */
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int start_count; /* number of SVCs done for this req */
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/* Callback that is called after reaching final status. */
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void (*callback)(struct sclp_req *, void *data);
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void *callback_data;
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int queue_timeout; /* request queue timeout (sec), set by
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caller of sclp_add_request(), if
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needed */
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/* Internal fields */
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unsigned long queue_expires; /* request queue timeout (jiffies) */
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};
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#define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
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#define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */
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#define SCLP_REQ_RUNNING 0x02 /* request is currently running */
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#define SCLP_REQ_DONE 0x03 /* request is completed successfully */
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#define SCLP_REQ_FAILED 0x05 /* request is finally failed */
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#define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */
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#define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */
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/* function pointers that a high level driver has to use for registration */
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/* of some routines it wants to be called from the low level driver */
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struct sclp_register {
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struct list_head list;
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/* User wants to receive: */
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sccb_mask_t receive_mask;
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/* User wants to send: */
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sccb_mask_t send_mask;
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/* H/W can receive: */
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sccb_mask_t sclp_receive_mask;
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/* H/W can send: */
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sccb_mask_t sclp_send_mask;
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/* called if event type availability changes */
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void (*state_change_fn)(struct sclp_register *);
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/* called for events in cp_receive_mask/sclp_receive_mask */
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void (*receiver_fn)(struct evbuf_header *);
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/* called for power management events */
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void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
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/* pm event posted flag */
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int pm_event_posted;
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};
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/* externals from sclp.c */
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int sclp_add_request(struct sclp_req *req);
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void sclp_sync_wait(void);
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int sclp_register(struct sclp_register *reg);
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void sclp_unregister(struct sclp_register *reg);
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int sclp_remove_processed(struct sccb_header *sccb);
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int sclp_deactivate(void);
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int sclp_reactivate(void);
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int sclp_service_call(sclp_cmdw_t command, void *sccb);
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int sclp_sync_request(sclp_cmdw_t command, void *sccb);
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int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
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int sclp_sdias_init(void);
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void sclp_sdias_exit(void);
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extern int sclp_console_pages;
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extern int sclp_console_drop;
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extern unsigned long sclp_console_full;
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/* useful inlines */
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/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
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/* translate single character from ASCII to EBCDIC */
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static inline unsigned char
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sclp_ascebc(unsigned char ch)
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{
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return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
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}
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/* translate string from EBCDIC to ASCII */
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static inline void
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sclp_ebcasc_str(unsigned char *str, int nr)
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{
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(MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
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}
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/* translate string from ASCII to EBCDIC */
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static inline void
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sclp_ascebc_str(unsigned char *str, int nr)
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{
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(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
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}
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static inline struct gds_vector *
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sclp_find_gds_vector(void *start, void *end, u16 id)
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{
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struct gds_vector *v;
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for (v = start; (void *) v < end; v = (void *) v + v->length)
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if (v->gds_id == id)
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return v;
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return NULL;
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}
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static inline struct gds_subvector *
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sclp_find_gds_subvector(void *start, void *end, u8 key)
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{
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struct gds_subvector *sv;
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for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
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if (sv->key == key)
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return sv;
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return NULL;
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}
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#endif /* __SCLP_H__ */
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