1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* $OpenBSD: nvme_pci.c,v 1.7 2018/01/10 15:45:46 jcs Exp $ */
/*
* Copyright (c) 2014 David Gwynne <dlg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/timeout.h>
#include <sys/queue.h>
#include <sys/mutex.h>
#include <sys/pool.h>
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <dev/ic/nvmereg.h>
#include <dev/ic/nvmevar.h>
#define NVME_PCI_BAR 0x10
#define NVME_PCI_INTERFACE 0x02
struct nvme_pci_softc {
struct nvme_softc psc_nvme;
pci_chipset_tag_t psc_pc;
};
int nvme_pci_match(struct device *, void *, void *);
void nvme_pci_attach(struct device *, struct device *, void *);
int nvme_pci_detach(struct device *, int);
int nvme_pci_activate(struct device *, int);
struct cfattach nvme_pci_ca = {
sizeof(struct nvme_pci_softc),
nvme_pci_match,
nvme_pci_attach,
nvme_pci_detach,
nvme_pci_activate
};
int
nvme_pci_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_NVM &&
PCI_INTERFACE(pa->pa_class) == NVME_PCI_INTERFACE)
return (1);
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE &&
(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_NVME1 ||
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_NVME2))
return (1);
return (0);
}
static const struct pci_matchid nvme_msi_blacklist[] = {
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_OPTANE },
};
void
nvme_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct nvme_pci_softc *psc = (struct nvme_pci_softc *)self;
struct nvme_softc *sc = &psc->psc_nvme;
struct pci_attach_args *pa = aux;
pcireg_t maptype;
pci_intr_handle_t ih;
int msi = 1;
psc->psc_pc = pa->pa_pc;
sc->sc_dmat = pa->pa_dmat;
if (pci_matchbyid(pa, nvme_msi_blacklist, nitems(nvme_msi_blacklist)))
CLR(pa->pa_flags, PCI_FLAGS_MSI_ENABLED);
maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, NVME_PCI_BAR);
if (pci_mapreg_map(pa, NVME_PCI_BAR, maptype, 0,
&sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios, 0) != 0) {
printf(": unable to map registers\n");
return;
}
if (pci_intr_map_msi(pa, &ih) != 0) {
if (pci_intr_map(pa, &ih) != 0) {
printf(": unable to map interrupt\n");
goto unmap;
}
msi = 0;
}
sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
msi ? nvme_intr : nvme_intr_intx, sc, DEVNAME(sc));
if (sc->sc_ih == NULL) {
printf(": unable to establish interrupt\n");
goto unmap;
}
printf(": %s", pci_intr_string(pa->pa_pc, ih));
if (nvme_attach(sc) != 0) {
/* error printed by nvme_attach() */
goto disestablish;
}
return;
disestablish:
pci_intr_disestablish(pa->pa_pc, sc->sc_ih);
sc->sc_ih = NULL;
unmap:
bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
sc->sc_ios = 0;
}
int
nvme_pci_detach(struct device *self, int flags)
{
return (0);
}
int
nvme_pci_activate(struct device *self, int act)
{
struct nvme_pci_softc *psc = (struct nvme_pci_softc *)self;
return (nvme_activate(&psc->psc_nvme, act));
}
|
