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Differential D11634

fix the installation failure of FreeBSD on Hyper-V GEN2
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Authored by honzhan_microsoft.com on Jul 18 2017, 2:55 AM.
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Reviewers
decui_microsoft.com
sepherosa_gmail.com
howard0su_gmail.com
hrs
Commits
rS321286: hyperv/storvsc: Force SPC3 for CDROM attached.
Summary

Fail to install FreeBSD 11.1 beta or 12-current on Hyper-V GEN2 mode, because the CD/DVD device was detached.

This issue occurs if CD/DVD was attached on 2nd SCSI controller or if there is no HDD attached before the CD/DVD slot.
The root cause is Hyper-V CD/DVD simulation set a unknown version number (0) for INQUIRY cmd.
The fix here manually sets the version number to SPC-3 in order to let SCSI CAM continue to probe the device with "REPORTLUN" commands.

See the bug https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220790

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Build Status
Buildable 10542
Build 10949: arc lint + arc unit

Revision Contents
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PathSize
sys/
dev/
hyperv/
storvsc/
19 lines

Diff 30894

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sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c

Show First 20 Lines • Show All 251 Lines • ▼ Show 20 Lines
} }
#define _ATOMIC_CMPSET(bar, a, l) \ #define _ATOMIC_CMPSET(bar, a, l) \
_ATOMIC_CMPSET_IMPL(8, w, b, bar, a, l) \ _ATOMIC_CMPSET_IMPL(8, w, b, bar, a, l) \
_ATOMIC_CMPSET_IMPL(16, w, h, bar, a, l) \ _ATOMIC_CMPSET_IMPL(16, w, h, bar, a, l) \
_ATOMIC_CMPSET_IMPL(32, w, , bar, a, l) \ _ATOMIC_CMPSET_IMPL(32, w, , bar, a, l) \
_ATOMIC_CMPSET_IMPL(64, , , bar, a, l) _ATOMIC_CMPSET_IMPL(64, , , bar, a, l)
#define atomic_cmpset_8 atomic_cmpset_8
#define atomic_fcmpset_8 atomic_fcmpset_8
#define atomic_cmpset_16 atomic_cmpset_16
#define atomic_fcmpset_16 atomic_fcmpset_16
_ATOMIC_CMPSET( , , ) _ATOMIC_CMPSET( , , )
_ATOMIC_CMPSET(acq_, a, ) _ATOMIC_CMPSET(acq_, a, )
_ATOMIC_CMPSET(rel_, ,l) _ATOMIC_CMPSET(rel_, ,l)
#define _ATOMIC_FETCHADD_PROTO(t, flav) \ #define _ATOMIC_FETCHADD_PROTO(t, flav) \
static __inline uint##t##_t \ static __inline uint##t##_t \
atomic_fetchadd_##t##flav(volatile uint##t##_t *p, uint##t##_t val) atomic_fetchadd_##t##flav(volatile uint##t##_t *p, uint##t##_t val)
▲ Show 20 Lines • Show All 192 Lines • ▼ Show 20 Lines __asm __volatile( \
"ldar"#s" %"#w"0, [%1]\n" \ "ldar"#s" %"#w"0, [%1]\n" \
: "=&r" (ret) \ : "=&r" (ret) \
: "r" (p) \ : "r" (p) \
: "memory"); \ : "memory"); \
\ \
return (ret); \ return (ret); \
} }
#define atomic_load_acq_8 atomic_load_acq_8
#define atomic_load_acq_16 atomic_load_acq_16
_ATOMIC_LOAD_ACQ_IMPL(8, w, b) _ATOMIC_LOAD_ACQ_IMPL(8, w, b)
_ATOMIC_LOAD_ACQ_IMPL(16, w, h) _ATOMIC_LOAD_ACQ_IMPL(16, w, h)
_ATOMIC_LOAD_ACQ_IMPL(32, w, ) _ATOMIC_LOAD_ACQ_IMPL(32, w, )
_ATOMIC_LOAD_ACQ_IMPL(64, , ) _ATOMIC_LOAD_ACQ_IMPL(64, , )
#define _ATOMIC_STORE_REL_IMPL(t, w, s) \ #define _ATOMIC_STORE_REL_IMPL(t, w, s) \
static __inline void \ static __inline void \
atomic_store_rel_##t(volatile uint##t##_t *p, uint##t##_t val) \ atomic_store_rel_##t(volatile uint##t##_t *p, uint##t##_t val) \
▲ Show 20 Lines • Show All 114 Lines • ▼ Show 20 Lines
} }
static __inline void static __inline void
atomic_thread_fence_seq_cst(void) atomic_thread_fence_seq_cst(void)
{ {
dmb(sy); dmb(sy);
} }
#include <sys/_atomic_subword.h>
#endif /* KCSAN && !KCSAN_RUNTIME */ #endif /* KCSAN && !KCSAN_RUNTIME */
#endif /* _MACHINE_ATOMIC_H_ */ #endif /* _MACHINE_ATOMIC_H_ */