mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Pull s390 updates from Heiko Carstens: "Since Martin is on vacation you get the s390 pull request for the v4.15 merge window this time from me. Besides a lot of cleanups and bug fixes these are the most important changes: - a new regset for runtime instrumentation registers - hardware accelerated AES-GCM support for the aes_s390 module - support for the new CEX6S crypto cards - support for FORTIFY_SOURCE - addition of missing z13 and new z14 instructions to the in-kernel disassembler - generate opcode tables for the in-kernel disassembler out of a simple text file instead of having to manually maintain those tables - fast memset16, memset32 and memset64 implementations - removal of named saved segment support - hardware counter support for z14 - queued spinlocks and queued rwlocks implementations for s390 - use the stack_depth tracking feature for s390 BPF JIT - a new s390_sthyi system call which emulates the sthyi (store hypervisor information) instruction - removal of the old KVM virtio transport - an s390 specific CPU alternatives implementation which is used in the new spinlock code" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (88 commits) MAINTAINERS: add virtio-ccw.h to virtio/s390 section s390/noexec: execute kexec datamover without DAT s390: fix transactional execution control register handling s390/bpf: take advantage of stack_depth tracking s390: simplify transactional execution elf hwcap handling s390/zcrypt: Rework struct ap_qact_ap_info. s390/virtio: remove unused header file kvm_virtio.h s390: avoid undefined behaviour s390/disassembler: generate opcode tables from text file s390/disassembler: remove insn_to_mnemonic() s390/dasd: avoid calling do_gettimeofday() s390: vfio-ccw: Do not attempt to free no-op, test and tic cda. s390: remove named saved segment support s390/archrandom: Reconsider s390 arch random implementation s390/pci: do not require AIS facility s390/qdio: sanitize put_indicator s390/qdio: use atomic_cmpxchg s390/nmi: avoid using long-displacement facility s390: pass endianness info to sparse s390/decompressor: remove informational messages ...
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef SCM_BLK_H
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#define SCM_BLK_H
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/blkdev.h>
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#include <linux/blk-mq.h>
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#include <linux/genhd.h>
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#include <linux/list.h>
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#include <asm/debug.h>
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#include <asm/eadm.h>
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#define SCM_NR_PARTS 8
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#define SCM_QUEUE_DELAY 5
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struct scm_blk_dev {
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struct request_queue *rq;
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struct gendisk *gendisk;
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struct blk_mq_tag_set tag_set;
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struct scm_device *scmdev;
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spinlock_t lock;
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atomic_t queued_reqs;
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enum {SCM_OPER, SCM_WR_PROHIBIT} state;
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struct list_head finished_requests;
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};
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struct scm_request {
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struct scm_blk_dev *bdev;
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struct aidaw *next_aidaw;
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struct request **request;
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struct aob *aob;
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struct list_head list;
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u8 retries;
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blk_status_t error;
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};
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#define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data)
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int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *);
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void scm_blk_dev_cleanup(struct scm_blk_dev *);
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void scm_blk_set_available(struct scm_blk_dev *);
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void scm_blk_irq(struct scm_device *, void *, blk_status_t);
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struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes);
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int scm_drv_init(void);
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void scm_drv_cleanup(void);
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extern debug_info_t *scm_debug;
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#define SCM_LOG(imp, txt) do { \
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debug_text_event(scm_debug, imp, txt); \
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} while (0)
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static inline void SCM_LOG_HEX(int level, void *data, int length)
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{
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debug_event(scm_debug, level, data, length);
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}
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static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev)
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{
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struct {
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u64 address;
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u8 oper_state;
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u8 rank;
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} __packed data = {
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.address = scmdev->address,
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.oper_state = scmdev->attrs.oper_state,
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.rank = scmdev->attrs.rank,
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};
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SCM_LOG_HEX(level, &data, sizeof(data));
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}
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#endif /* SCM_BLK_H */
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