56bf1a8e90
Current css code saves the operation request block (orb) in the subchannel structure for later consumption by the start function handler. This might make sense for asynchronous execution of the start function (which qemu doesn't support), but not in our case; it would even be wrong since orb contains a reference to a local variable in the base ssch handler. Let's just pass the orb through the start function call chain for ssch; for rsch, we can pass NULL as the backend function does not use any information passed via the orb there. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
102 lines
3 KiB
C
102 lines
3 KiB
C
/*
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* Channel subsystem structures and definitions.
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*
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* Copyright 2012 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef CSS_H
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#define CSS_H
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#include "ioinst.h"
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/* Channel subsystem constants. */
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#define MAX_SCHID 65535
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#define MAX_SSID 3
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#define MAX_CSSID 254 /* 255 is reserved */
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#define MAX_CHPID 255
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#define MAX_CIWS 62
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typedef struct CIW {
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uint8_t type;
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uint8_t command;
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uint16_t count;
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} QEMU_PACKED CIW;
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typedef struct SenseId {
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/* common part */
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uint8_t reserved; /* always 0x'FF' */
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uint16_t cu_type; /* control unit type */
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uint8_t cu_model; /* control unit model */
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uint16_t dev_type; /* device type */
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uint8_t dev_model; /* device model */
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uint8_t unused; /* padding byte */
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/* extended part */
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CIW ciw[MAX_CIWS]; /* variable # of CIWs */
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} QEMU_PACKED SenseId;
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/* Channel measurements, from linux/drivers/s390/cio/cmf.c. */
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typedef struct CMB {
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uint16_t ssch_rsch_count;
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uint16_t sample_count;
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uint32_t device_connect_time;
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uint32_t function_pending_time;
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uint32_t device_disconnect_time;
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uint32_t control_unit_queuing_time;
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uint32_t device_active_only_time;
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uint32_t reserved[2];
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} QEMU_PACKED CMB;
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typedef struct CMBE {
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uint32_t ssch_rsch_count;
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uint32_t sample_count;
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uint32_t device_connect_time;
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uint32_t function_pending_time;
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uint32_t device_disconnect_time;
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uint32_t control_unit_queuing_time;
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uint32_t device_active_only_time;
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uint32_t device_busy_time;
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uint32_t initial_command_response_time;
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uint32_t reserved[7];
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} QEMU_PACKED CMBE;
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struct SubchDev {
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/* channel-subsystem related things: */
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uint8_t cssid;
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uint8_t ssid;
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uint16_t schid;
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uint16_t devno;
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SCHIB curr_status;
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uint8_t sense_data[32];
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hwaddr channel_prog;
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CCW1 last_cmd;
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bool last_cmd_valid;
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bool thinint_active;
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/* transport-provided data: */
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int (*ccw_cb) (SubchDev *, CCW1);
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SenseId id;
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void *driver_data;
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};
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typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid,
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uint16_t schid);
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int css_create_css_image(uint8_t cssid, bool default_image);
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bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
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void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,
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uint16_t devno, SubchDev *sch);
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void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type);
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uint16_t css_build_subchannel_id(SubchDev *sch);
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void css_reset(void);
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void css_reset_sch(SubchDev *sch);
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void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid);
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void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid,
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int hotplugged, int add);
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void css_generate_chp_crws(uint8_t cssid, uint8_t chpid);
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void css_adapter_interrupt(uint8_t isc);
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#endif
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