2 * Copyright (c) 2011 NetApp, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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32 #include <sys/types.h>
33 #include <sys/queue.h>
34 #include <sys/kernel.h>
36 #include <dev/pci/pcireg.h>
40 #define PCI_BARMAX PCIR_MAX_BAR_0 /* BAR registers in a Type 0 header */
41 #define PCIY_RESERVED 0x00
48 char *pe_emu; /* Name of device emulation */
50 /* instance creation */
51 int (*pe_init)(struct vmctx *, struct pci_devinst *,
54 /* ACPI DSDT enumeration */
55 void (*pe_write_dsdt)(struct pci_devinst *);
57 /* config space read/write callbacks */
58 int (*pe_cfgwrite)(struct vmctx *ctx, int vcpu,
59 struct pci_devinst *pi, int offset,
60 int bytes, uint32_t val);
61 int (*pe_cfgread)(struct vmctx *ctx, int vcpu,
62 struct pci_devinst *pi, int offset,
63 int bytes, uint32_t *retval);
65 /* BAR read/write callbacks */
66 void (*pe_barwrite)(struct vmctx *ctx, int vcpu,
67 struct pci_devinst *pi, int baridx,
68 uint64_t offset, int size, uint64_t value);
69 uint64_t (*pe_barread)(struct vmctx *ctx, int vcpu,
70 struct pci_devinst *pi, int baridx,
71 uint64_t offset, int size);
73 #define PCI_EMUL_SET(x) DATA_SET(pci_devemu_set, x);
84 enum pcibar_type type; /* io or memory */
91 struct msix_table_entry {
94 uint32_t vector_control;
98 * In case the structure is modified to hold extra information, use a define
99 * for the size that should be emulated.
101 #define MSIX_TABLE_ENTRY_SIZE 16
102 #define MAX_MSIX_TABLE_ENTRIES 2048
103 #define PBA_TABLE_ENTRY_SIZE 8
106 struct pci_devemu *pi_d;
107 struct vmctx *pi_vmctx;
108 uint8_t pi_bus, pi_slot, pi_func;
110 int8_t pi_lintr_state;
111 char pi_name[PI_NAMESZ];
130 struct msix_table_entry *table; /* allocated at runtime */
133 void *pi_arg; /* devemu-private data */
135 u_char pi_cfgdata[PCI_REGMAX + 1];
136 struct pcibar pi_bar[PCI_BARMAX + 1];
152 uint32_t table_info; /* bar index and offset within it */
153 uint32_t pba_info; /* bar index and offset within it */
159 uint16_t pcie_capabilities;
161 uint32_t dev_capabilities; /* all devices */
162 uint16_t dev_control;
165 uint32_t link_capabilities; /* devices with links */
166 uint16_t link_control;
167 uint16_t link_status;
169 uint32_t slot_capabilities; /* ports with slots */
170 uint16_t slot_control;
171 uint16_t slot_status;
173 uint16_t root_control; /* root ports */
174 uint16_t root_capabilities;
175 uint32_t root_status;
177 uint32_t dev_capabilities2; /* all devices */
178 uint16_t dev_control2;
179 uint16_t dev_status2;
181 uint32_t link_capabilities2; /* devices with links */
182 uint16_t link_control2;
183 uint16_t link_status2;
185 uint32_t slot_capabilities2; /* ports with slots */
186 uint16_t slot_control2;
187 uint16_t slot_status2;
190 int init_pci(struct vmctx *ctx);
191 void msicap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
192 int bytes, uint32_t val);
193 void msixcap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
194 int bytes, uint32_t val);
195 void pci_callback(void);
196 int pci_emul_alloc_bar(struct pci_devinst *pdi, int idx,
197 enum pcibar_type type, uint64_t size);
198 int pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx,
199 uint64_t hostbase, enum pcibar_type type, uint64_t size);
200 int pci_emul_add_msicap(struct pci_devinst *pi, int msgnum);
201 int pci_emul_add_pciecap(struct pci_devinst *pi, int pcie_device_type);
202 int pci_is_legacy(struct pci_devinst *pi);
203 void pci_generate_msi(struct pci_devinst *pi, int msgnum);
204 void pci_generate_msix(struct pci_devinst *pi, int msgnum);
205 void pci_lintr_assert(struct pci_devinst *pi);
206 void pci_lintr_deassert(struct pci_devinst *pi);
207 int pci_lintr_request(struct pci_devinst *pi, int ivec);
208 int pci_msi_enabled(struct pci_devinst *pi);
209 int pci_msix_enabled(struct pci_devinst *pi);
210 int pci_msix_table_bar(struct pci_devinst *pi);
211 int pci_msix_pba_bar(struct pci_devinst *pi);
212 int pci_msi_msgnum(struct pci_devinst *pi);
213 int pci_parse_slot(char *opt, int legacy);
214 void pci_populate_msicap(struct msicap *cap, int msgs, int nextptr);
215 int pci_emul_add_msixcap(struct pci_devinst *pi, int msgnum, int barnum);
216 int pci_emul_msix_twrite(struct pci_devinst *pi, uint64_t offset, int size,
218 uint64_t pci_emul_msix_tread(struct pci_devinst *pi, uint64_t offset, int size);
219 void pci_write_dsdt(void);
222 pci_set_cfgdata8(struct pci_devinst *pi, int offset, uint8_t val)
224 assert(offset <= PCI_REGMAX);
225 *(uint8_t *)(pi->pi_cfgdata + offset) = val;
229 pci_set_cfgdata16(struct pci_devinst *pi, int offset, uint16_t val)
231 assert(offset <= (PCI_REGMAX - 1) && (offset & 1) == 0);
232 *(uint16_t *)(pi->pi_cfgdata + offset) = val;
236 pci_set_cfgdata32(struct pci_devinst *pi, int offset, uint32_t val)
238 assert(offset <= (PCI_REGMAX - 3) && (offset & 3) == 0);
239 *(uint32_t *)(pi->pi_cfgdata + offset) = val;
242 static __inline uint8_t
243 pci_get_cfgdata8(struct pci_devinst *pi, int offset)
245 assert(offset <= PCI_REGMAX);
246 return (*(uint8_t *)(pi->pi_cfgdata + offset));
249 static __inline uint16_t
250 pci_get_cfgdata16(struct pci_devinst *pi, int offset)
252 assert(offset <= (PCI_REGMAX - 1) && (offset & 1) == 0);
253 return (*(uint16_t *)(pi->pi_cfgdata + offset));
256 static __inline uint32_t
257 pci_get_cfgdata32(struct pci_devinst *pi, int offset)
259 assert(offset <= (PCI_REGMAX - 3) && (offset & 3) == 0);
260 return (*(uint32_t *)(pi->pi_cfgdata + offset));
263 #endif /* _PCI_EMUL_H_ */