root / hw / pci_host.c @ bfb811ad
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1 | 4f5e19e6 | Isaku Yamahata | /*
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2 | 4f5e19e6 | Isaku Yamahata | * pci_host.c
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3 | 4f5e19e6 | Isaku Yamahata | *
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4 | 4f5e19e6 | Isaku Yamahata | * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
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5 | 4f5e19e6 | Isaku Yamahata | * VA Linux Systems Japan K.K.
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6 | 4f5e19e6 | Isaku Yamahata | *
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7 | 4f5e19e6 | Isaku Yamahata | * This program is free software; you can redistribute it and/or modify
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8 | 4f5e19e6 | Isaku Yamahata | * it under the terms of the GNU General Public License as published by
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9 | 4f5e19e6 | Isaku Yamahata | * the Free Software Foundation; either version 2 of the License, or
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10 | 4f5e19e6 | Isaku Yamahata | * (at your option) any later version.
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11 | 4f5e19e6 | Isaku Yamahata | |
12 | 4f5e19e6 | Isaku Yamahata | * This program is distributed in the hope that it will be useful,
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13 | 4f5e19e6 | Isaku Yamahata | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | 4f5e19e6 | Isaku Yamahata | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | 4f5e19e6 | Isaku Yamahata | * GNU General Public License for more details.
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16 | 4f5e19e6 | Isaku Yamahata | |
17 | 4f5e19e6 | Isaku Yamahata | * You should have received a copy of the GNU General Public License along
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18 | 4f5e19e6 | Isaku Yamahata | * with this program; if not, write to the Free Software Foundation, Inc.,
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19 | 4f5e19e6 | Isaku Yamahata | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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20 | 4f5e19e6 | Isaku Yamahata | */
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21 | 4f5e19e6 | Isaku Yamahata | |
22 | 4f5e19e6 | Isaku Yamahata | #include "pci.h" |
23 | 4f5e19e6 | Isaku Yamahata | #include "pci_host.h" |
24 | 4f5e19e6 | Isaku Yamahata | |
25 | 4f5e19e6 | Isaku Yamahata | /* debug PCI */
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26 | 4f5e19e6 | Isaku Yamahata | //#define DEBUG_PCI
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27 | 4f5e19e6 | Isaku Yamahata | |
28 | 4f5e19e6 | Isaku Yamahata | #ifdef DEBUG_PCI
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29 | 4f5e19e6 | Isaku Yamahata | #define PCI_DPRINTF(fmt, ...) \
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30 | 4f5e19e6 | Isaku Yamahata | do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0) |
31 | 4f5e19e6 | Isaku Yamahata | #else
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32 | 4f5e19e6 | Isaku Yamahata | #define PCI_DPRINTF(fmt, ...)
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33 | 4f5e19e6 | Isaku Yamahata | #endif
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34 | 4f5e19e6 | Isaku Yamahata | |
35 | 766347cc | Isaku Yamahata | /*
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36 | 766347cc | Isaku Yamahata | * PCI address
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37 | 766347cc | Isaku Yamahata | * bit 16 - 24: bus number
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38 | 766347cc | Isaku Yamahata | * bit 8 - 15: devfun number
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39 | 766347cc | Isaku Yamahata | * bit 0 - 7: offset in configuration space of a given pci device
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40 | 766347cc | Isaku Yamahata | */
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41 | 766347cc | Isaku Yamahata | |
42 | 766347cc | Isaku Yamahata | /* the helper functio to get a PCIDeice* for a given pci address */
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43 | 8d6514f8 | Isaku Yamahata | static inline PCIDevice *pci_dev_find_by_addr(PCIBus *bus, uint32_t addr) |
44 | 766347cc | Isaku Yamahata | { |
45 | 42331e9f | Isaku Yamahata | uint8_t bus_num = addr >> 16;
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46 | 42331e9f | Isaku Yamahata | uint8_t devfn = addr >> 8;
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47 | 42331e9f | Isaku Yamahata | |
48 | 766347cc | Isaku Yamahata | return pci_find_device(bus, bus_num, PCI_SLOT(devfn), PCI_FUNC(devfn));
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49 | 766347cc | Isaku Yamahata | } |
50 | 766347cc | Isaku Yamahata | |
51 | ce195fb5 | Isaku Yamahata | void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len) |
52 | 766347cc | Isaku Yamahata | { |
53 | 8d6514f8 | Isaku Yamahata | PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr); |
54 | 7ac901cd | Isaku Yamahata | uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1);
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55 | 766347cc | Isaku Yamahata | |
56 | 766347cc | Isaku Yamahata | if (!pci_dev)
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57 | 766347cc | Isaku Yamahata | return;
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58 | 766347cc | Isaku Yamahata | |
59 | 766347cc | Isaku Yamahata | PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRI32x" len=%d\n", |
60 | 766347cc | Isaku Yamahata | __func__, pci_dev->name, config_addr, val, len); |
61 | 766347cc | Isaku Yamahata | pci_dev->config_write(pci_dev, config_addr, val, len); |
62 | 766347cc | Isaku Yamahata | } |
63 | 766347cc | Isaku Yamahata | |
64 | ce195fb5 | Isaku Yamahata | uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len)
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65 | 766347cc | Isaku Yamahata | { |
66 | 8d6514f8 | Isaku Yamahata | PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr); |
67 | 7ac901cd | Isaku Yamahata | uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1);
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68 | 766347cc | Isaku Yamahata | uint32_t val; |
69 | 766347cc | Isaku Yamahata | |
70 | 4677d8ed | Michael S. Tsirkin | assert(len == 1 || len == 2 || len == 4); |
71 | 766347cc | Isaku Yamahata | if (!pci_dev) {
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72 | 4677d8ed | Michael S. Tsirkin | return ~0x0; |
73 | 766347cc | Isaku Yamahata | } |
74 | 766347cc | Isaku Yamahata | |
75 | 4677d8ed | Michael S. Tsirkin | val = pci_dev->config_read(pci_dev, config_addr, len); |
76 | 4677d8ed | Michael S. Tsirkin | PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRIx32" len=%d\n", |
77 | 4677d8ed | Michael S. Tsirkin | __func__, pci_dev->name, config_addr, val, len); |
78 | 4677d8ed | Michael S. Tsirkin | |
79 | 766347cc | Isaku Yamahata | return val;
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80 | 766347cc | Isaku Yamahata | } |
81 | 766347cc | Isaku Yamahata | |
82 | a455783b | Isaku Yamahata | static void pci_host_config_writel(void *opaque, target_phys_addr_t addr, |
83 | a455783b | Isaku Yamahata | uint32_t val) |
84 | a455783b | Isaku Yamahata | { |
85 | a455783b | Isaku Yamahata | PCIHostState *s = opaque; |
86 | a455783b | Isaku Yamahata | |
87 | a455783b | Isaku Yamahata | #ifdef TARGET_WORDS_BIGENDIAN
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88 | a455783b | Isaku Yamahata | val = bswap32(val); |
89 | a455783b | Isaku Yamahata | #endif
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90 | a455783b | Isaku Yamahata | PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n", |
91 | a455783b | Isaku Yamahata | __func__, addr, val); |
92 | a455783b | Isaku Yamahata | s->config_reg = val; |
93 | a455783b | Isaku Yamahata | } |
94 | a455783b | Isaku Yamahata | |
95 | a455783b | Isaku Yamahata | static uint32_t pci_host_config_readl(void *opaque, target_phys_addr_t addr) |
96 | a455783b | Isaku Yamahata | { |
97 | a455783b | Isaku Yamahata | PCIHostState *s = opaque; |
98 | a455783b | Isaku Yamahata | uint32_t val = s->config_reg; |
99 | a455783b | Isaku Yamahata | |
100 | a455783b | Isaku Yamahata | #ifdef TARGET_WORDS_BIGENDIAN
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101 | a455783b | Isaku Yamahata | val = bswap32(val); |
102 | a455783b | Isaku Yamahata | #endif
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103 | a455783b | Isaku Yamahata | PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n", |
104 | a455783b | Isaku Yamahata | __func__, addr, val); |
105 | a455783b | Isaku Yamahata | return val;
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106 | a455783b | Isaku Yamahata | } |
107 | a455783b | Isaku Yamahata | |
108 | a455783b | Isaku Yamahata | static CPUWriteMemoryFunc * const pci_host_config_write[] = { |
109 | a455783b | Isaku Yamahata | &pci_host_config_writel, |
110 | a455783b | Isaku Yamahata | &pci_host_config_writel, |
111 | a455783b | Isaku Yamahata | &pci_host_config_writel, |
112 | a455783b | Isaku Yamahata | }; |
113 | a455783b | Isaku Yamahata | |
114 | a455783b | Isaku Yamahata | static CPUReadMemoryFunc * const pci_host_config_read[] = { |
115 | a455783b | Isaku Yamahata | &pci_host_config_readl, |
116 | a455783b | Isaku Yamahata | &pci_host_config_readl, |
117 | a455783b | Isaku Yamahata | &pci_host_config_readl, |
118 | a455783b | Isaku Yamahata | }; |
119 | a455783b | Isaku Yamahata | |
120 | f08b32fe | Isaku Yamahata | int pci_host_conf_register_mmio(PCIHostState *s)
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121 | a455783b | Isaku Yamahata | { |
122 | a455783b | Isaku Yamahata | return cpu_register_io_memory(pci_host_config_read,
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123 | a455783b | Isaku Yamahata | pci_host_config_write, s); |
124 | a455783b | Isaku Yamahata | } |
125 | a455783b | Isaku Yamahata | |
126 | a455783b | Isaku Yamahata | static void pci_host_config_writel_noswap(void *opaque, |
127 | a455783b | Isaku Yamahata | target_phys_addr_t addr, |
128 | a455783b | Isaku Yamahata | uint32_t val) |
129 | a455783b | Isaku Yamahata | { |
130 | a455783b | Isaku Yamahata | PCIHostState *s = opaque; |
131 | a455783b | Isaku Yamahata | |
132 | a455783b | Isaku Yamahata | PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n", |
133 | a455783b | Isaku Yamahata | __func__, addr, val); |
134 | a455783b | Isaku Yamahata | s->config_reg = val; |
135 | a455783b | Isaku Yamahata | } |
136 | a455783b | Isaku Yamahata | |
137 | a455783b | Isaku Yamahata | static uint32_t pci_host_config_readl_noswap(void *opaque, |
138 | a455783b | Isaku Yamahata | target_phys_addr_t addr) |
139 | a455783b | Isaku Yamahata | { |
140 | a455783b | Isaku Yamahata | PCIHostState *s = opaque; |
141 | a455783b | Isaku Yamahata | uint32_t val = s->config_reg; |
142 | a455783b | Isaku Yamahata | |
143 | a455783b | Isaku Yamahata | PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n", |
144 | a455783b | Isaku Yamahata | __func__, addr, val); |
145 | a455783b | Isaku Yamahata | return val;
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146 | a455783b | Isaku Yamahata | } |
147 | a455783b | Isaku Yamahata | |
148 | a455783b | Isaku Yamahata | static CPUWriteMemoryFunc * const pci_host_config_write_noswap[] = { |
149 | a455783b | Isaku Yamahata | &pci_host_config_writel_noswap, |
150 | a455783b | Isaku Yamahata | &pci_host_config_writel_noswap, |
151 | a455783b | Isaku Yamahata | &pci_host_config_writel_noswap, |
152 | a455783b | Isaku Yamahata | }; |
153 | a455783b | Isaku Yamahata | |
154 | a455783b | Isaku Yamahata | static CPUReadMemoryFunc * const pci_host_config_read_noswap[] = { |
155 | a455783b | Isaku Yamahata | &pci_host_config_readl_noswap, |
156 | a455783b | Isaku Yamahata | &pci_host_config_readl_noswap, |
157 | a455783b | Isaku Yamahata | &pci_host_config_readl_noswap, |
158 | a455783b | Isaku Yamahata | }; |
159 | a455783b | Isaku Yamahata | |
160 | f08b32fe | Isaku Yamahata | int pci_host_conf_register_mmio_noswap(PCIHostState *s)
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161 | a455783b | Isaku Yamahata | { |
162 | a455783b | Isaku Yamahata | return cpu_register_io_memory(pci_host_config_read_noswap,
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163 | a455783b | Isaku Yamahata | pci_host_config_write_noswap, s); |
164 | a455783b | Isaku Yamahata | } |
165 | a455783b | Isaku Yamahata | |
166 | a455783b | Isaku Yamahata | static void pci_host_config_writel_ioport(void *opaque, |
167 | a455783b | Isaku Yamahata | uint32_t addr, uint32_t val) |
168 | a455783b | Isaku Yamahata | { |
169 | a455783b | Isaku Yamahata | PCIHostState *s = opaque; |
170 | a455783b | Isaku Yamahata | |
171 | a455783b | Isaku Yamahata | PCI_DPRINTF("%s addr %"PRIx32 " val %"PRIx32"\n", __func__, addr, val); |
172 | a455783b | Isaku Yamahata | s->config_reg = val; |
173 | a455783b | Isaku Yamahata | } |
174 | a455783b | Isaku Yamahata | |
175 | a455783b | Isaku Yamahata | static uint32_t pci_host_config_readl_ioport(void *opaque, uint32_t addr) |
176 | a455783b | Isaku Yamahata | { |
177 | a455783b | Isaku Yamahata | PCIHostState *s = opaque; |
178 | a455783b | Isaku Yamahata | uint32_t val = s->config_reg; |
179 | a455783b | Isaku Yamahata | |
180 | a455783b | Isaku Yamahata | PCI_DPRINTF("%s addr %"PRIx32" val %"PRIx32"\n", __func__, addr, val); |
181 | a455783b | Isaku Yamahata | return val;
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182 | a455783b | Isaku Yamahata | } |
183 | a455783b | Isaku Yamahata | |
184 | f08b32fe | Isaku Yamahata | void pci_host_conf_register_ioport(pio_addr_t ioport, PCIHostState *s)
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185 | a455783b | Isaku Yamahata | { |
186 | a455783b | Isaku Yamahata | register_ioport_write(ioport, 4, 4, pci_host_config_writel_ioport, s); |
187 | a455783b | Isaku Yamahata | register_ioport_read(ioport, 4, 4, pci_host_config_readl_ioport, s); |
188 | a455783b | Isaku Yamahata | } |
189 | a455783b | Isaku Yamahata | |
190 | 4f5e19e6 | Isaku Yamahata | #define PCI_ADDR_T target_phys_addr_t
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191 | 4f5e19e6 | Isaku Yamahata | #define PCI_HOST_SUFFIX _mmio
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192 | 4f5e19e6 | Isaku Yamahata | |
193 | 4f5e19e6 | Isaku Yamahata | #include "pci_host_template.h" |
194 | 4f5e19e6 | Isaku Yamahata | |
195 | 4f5e19e6 | Isaku Yamahata | static CPUWriteMemoryFunc * const pci_host_data_write_mmio[] = { |
196 | 4f5e19e6 | Isaku Yamahata | pci_host_data_writeb_mmio, |
197 | 4f5e19e6 | Isaku Yamahata | pci_host_data_writew_mmio, |
198 | 4f5e19e6 | Isaku Yamahata | pci_host_data_writel_mmio, |
199 | 4f5e19e6 | Isaku Yamahata | }; |
200 | 4f5e19e6 | Isaku Yamahata | |
201 | 4f5e19e6 | Isaku Yamahata | static CPUReadMemoryFunc * const pci_host_data_read_mmio[] = { |
202 | 4f5e19e6 | Isaku Yamahata | pci_host_data_readb_mmio, |
203 | 4f5e19e6 | Isaku Yamahata | pci_host_data_readw_mmio, |
204 | 4f5e19e6 | Isaku Yamahata | pci_host_data_readl_mmio, |
205 | 4f5e19e6 | Isaku Yamahata | }; |
206 | 4f5e19e6 | Isaku Yamahata | |
207 | f08b32fe | Isaku Yamahata | int pci_host_data_register_mmio(PCIHostState *s)
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208 | 4f5e19e6 | Isaku Yamahata | { |
209 | 4f5e19e6 | Isaku Yamahata | return cpu_register_io_memory(pci_host_data_read_mmio,
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210 | 4f5e19e6 | Isaku Yamahata | pci_host_data_write_mmio, |
211 | 4f5e19e6 | Isaku Yamahata | s); |
212 | 4f5e19e6 | Isaku Yamahata | } |
213 | 4f5e19e6 | Isaku Yamahata | |
214 | 4f5e19e6 | Isaku Yamahata | #undef PCI_ADDR_T
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215 | 4f5e19e6 | Isaku Yamahata | #undef PCI_HOST_SUFFIX
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216 | 4f5e19e6 | Isaku Yamahata | |
217 | 4f5e19e6 | Isaku Yamahata | #define PCI_ADDR_T uint32_t
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218 | 4f5e19e6 | Isaku Yamahata | #define PCI_HOST_SUFFIX _ioport
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219 | 4f5e19e6 | Isaku Yamahata | |
220 | 4f5e19e6 | Isaku Yamahata | #include "pci_host_template.h" |
221 | 4f5e19e6 | Isaku Yamahata | |
222 | 4f5e19e6 | Isaku Yamahata | void pci_host_data_register_ioport(pio_addr_t ioport, PCIHostState *s)
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223 | 4f5e19e6 | Isaku Yamahata | { |
224 | 4f5e19e6 | Isaku Yamahata | register_ioport_write(ioport, 4, 1, pci_host_data_writeb_ioport, s); |
225 | 4f5e19e6 | Isaku Yamahata | register_ioport_write(ioport, 4, 2, pci_host_data_writew_ioport, s); |
226 | 4f5e19e6 | Isaku Yamahata | register_ioport_write(ioport, 4, 4, pci_host_data_writel_ioport, s); |
227 | 4f5e19e6 | Isaku Yamahata | register_ioport_read(ioport, 4, 1, pci_host_data_readb_ioport, s); |
228 | 4f5e19e6 | Isaku Yamahata | register_ioport_read(ioport, 4, 2, pci_host_data_readw_ioport, s); |
229 | 4f5e19e6 | Isaku Yamahata | register_ioport_read(ioport, 4, 4, pci_host_data_readl_ioport, s); |
230 | 4f5e19e6 | Isaku Yamahata | } |