root / hw / spapr_vio.c @ 5414dec6
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1 | 4040ab72 | David Gibson | /*
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2 | 4040ab72 | David Gibson | * QEMU sPAPR VIO code
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3 | 4040ab72 | David Gibson | *
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4 | 4040ab72 | David Gibson | * Copyright (c) 2010 David Gibson, IBM Corporation <dwg@au1.ibm.com>
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5 | 4040ab72 | David Gibson | * Based on the s390 virtio bus code:
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6 | 4040ab72 | David Gibson | * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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7 | 4040ab72 | David Gibson | *
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8 | 4040ab72 | David Gibson | * This library is free software; you can redistribute it and/or
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9 | 4040ab72 | David Gibson | * modify it under the terms of the GNU Lesser General Public
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10 | 4040ab72 | David Gibson | * License as published by the Free Software Foundation; either
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11 | 4040ab72 | David Gibson | * version 2 of the License, or (at your option) any later version.
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12 | 4040ab72 | David Gibson | *
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13 | 4040ab72 | David Gibson | * This library is distributed in the hope that it will be useful,
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14 | 4040ab72 | David Gibson | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | 4040ab72 | David Gibson | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 | 4040ab72 | David Gibson | * Lesser General Public License for more details.
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17 | 4040ab72 | David Gibson | *
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18 | 4040ab72 | David Gibson | * You should have received a copy of the GNU Lesser General Public
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19 | 4040ab72 | David Gibson | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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20 | 4040ab72 | David Gibson | */
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21 | 4040ab72 | David Gibson | |
22 | 4040ab72 | David Gibson | #include "hw.h" |
23 | 4040ab72 | David Gibson | #include "sysemu.h" |
24 | 4040ab72 | David Gibson | #include "boards.h" |
25 | 4040ab72 | David Gibson | #include "monitor.h" |
26 | 4040ab72 | David Gibson | #include "loader.h" |
27 | 4040ab72 | David Gibson | #include "elf.h" |
28 | 4040ab72 | David Gibson | #include "hw/sysbus.h" |
29 | 4040ab72 | David Gibson | #include "kvm.h" |
30 | 4040ab72 | David Gibson | #include "device_tree.h" |
31 | b45d63b6 | Ben Herrenschmidt | #include "kvm_ppc.h" |
32 | 4040ab72 | David Gibson | |
33 | 4040ab72 | David Gibson | #include "hw/spapr.h" |
34 | 4040ab72 | David Gibson | #include "hw/spapr_vio.h" |
35 | 277f9acf | Paolo Bonzini | #include "hw/xics.h" |
36 | 4040ab72 | David Gibson | |
37 | 4040ab72 | David Gibson | #ifdef CONFIG_FDT
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38 | 4040ab72 | David Gibson | #include <libfdt.h> |
39 | 4040ab72 | David Gibson | #endif /* CONFIG_FDT */ |
40 | 4040ab72 | David Gibson | |
41 | 4040ab72 | David Gibson | /* #define DEBUG_SPAPR */
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42 | ee86dfee | David Gibson | /* #define DEBUG_TCE */
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43 | 4040ab72 | David Gibson | |
44 | 4040ab72 | David Gibson | #ifdef DEBUG_SPAPR
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45 | 4040ab72 | David Gibson | #define dprintf(fmt, ...) \
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46 | 4040ab72 | David Gibson | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
47 | 4040ab72 | David Gibson | #else
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48 | 4040ab72 | David Gibson | #define dprintf(fmt, ...) \
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49 | 4040ab72 | David Gibson | do { } while (0) |
50 | 4040ab72 | David Gibson | #endif
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51 | 4040ab72 | David Gibson | |
52 | 4040ab72 | David Gibson | static struct BusInfo spapr_vio_bus_info = { |
53 | 4040ab72 | David Gibson | .name = "spapr-vio",
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54 | 4040ab72 | David Gibson | .size = sizeof(VIOsPAPRBus),
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55 | 416343b1 | Paolo Bonzini | .props = (Property[]) { |
56 | 416343b1 | Paolo Bonzini | DEFINE_PROP_UINT32("irq", VIOsPAPRDevice, vio_irq_num, 0), \ |
57 | 416343b1 | Paolo Bonzini | DEFINE_PROP_END_OF_LIST(), |
58 | 416343b1 | Paolo Bonzini | }, |
59 | 4040ab72 | David Gibson | }; |
60 | 4040ab72 | David Gibson | |
61 | 4040ab72 | David Gibson | VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg) |
62 | 4040ab72 | David Gibson | { |
63 | 4040ab72 | David Gibson | DeviceState *qdev; |
64 | 4040ab72 | David Gibson | VIOsPAPRDevice *dev = NULL;
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65 | 4040ab72 | David Gibson | |
66 | d8bb00d6 | Paolo Bonzini | QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
67 | 4040ab72 | David Gibson | dev = (VIOsPAPRDevice *)qdev; |
68 | 4040ab72 | David Gibson | if (dev->reg == reg) {
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69 | 5435352c | David Gibson | return dev;
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70 | 4040ab72 | David Gibson | } |
71 | 4040ab72 | David Gibson | } |
72 | 4040ab72 | David Gibson | |
73 | 5435352c | David Gibson | return NULL; |
74 | 4040ab72 | David Gibson | } |
75 | 4040ab72 | David Gibson | |
76 | 1e34d859 | Michael Ellerman | static char *vio_format_dev_name(VIOsPAPRDevice *dev) |
77 | 1e34d859 | Michael Ellerman | { |
78 | 3954d33a | Anthony Liguori | VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
79 | 1e34d859 | Michael Ellerman | char *name;
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80 | 1e34d859 | Michael Ellerman | |
81 | 1e34d859 | Michael Ellerman | /* Device tree style name device@reg */
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82 | 3954d33a | Anthony Liguori | if (asprintf(&name, "%s@%x", pc->dt_name, dev->reg) < 0) { |
83 | 1e34d859 | Michael Ellerman | return NULL; |
84 | 1e34d859 | Michael Ellerman | } |
85 | 1e34d859 | Michael Ellerman | |
86 | 1e34d859 | Michael Ellerman | return name;
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87 | 1e34d859 | Michael Ellerman | } |
88 | 1e34d859 | Michael Ellerman | |
89 | 4040ab72 | David Gibson | #ifdef CONFIG_FDT
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90 | 4040ab72 | David Gibson | static int vio_make_devnode(VIOsPAPRDevice *dev, |
91 | 4040ab72 | David Gibson | void *fdt)
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92 | 4040ab72 | David Gibson | { |
93 | 3954d33a | Anthony Liguori | VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
94 | 1e34d859 | Michael Ellerman | int vdevice_off, node_off, ret;
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95 | 1e34d859 | Michael Ellerman | char *dt_name;
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96 | 4040ab72 | David Gibson | |
97 | 4040ab72 | David Gibson | vdevice_off = fdt_path_offset(fdt, "/vdevice");
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98 | 4040ab72 | David Gibson | if (vdevice_off < 0) { |
99 | 4040ab72 | David Gibson | return vdevice_off;
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100 | 4040ab72 | David Gibson | } |
101 | 4040ab72 | David Gibson | |
102 | 1e34d859 | Michael Ellerman | dt_name = vio_format_dev_name(dev); |
103 | 1e34d859 | Michael Ellerman | if (!dt_name) {
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104 | 1e34d859 | Michael Ellerman | return -ENOMEM;
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105 | 1e34d859 | Michael Ellerman | } |
106 | 1e34d859 | Michael Ellerman | |
107 | 1e34d859 | Michael Ellerman | node_off = fdt_add_subnode(fdt, vdevice_off, dt_name); |
108 | 1e34d859 | Michael Ellerman | free(dt_name); |
109 | 4040ab72 | David Gibson | if (node_off < 0) { |
110 | 4040ab72 | David Gibson | return node_off;
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111 | 4040ab72 | David Gibson | } |
112 | 4040ab72 | David Gibson | |
113 | 4040ab72 | David Gibson | ret = fdt_setprop_cell(fdt, node_off, "reg", dev->reg);
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114 | 4040ab72 | David Gibson | if (ret < 0) { |
115 | 4040ab72 | David Gibson | return ret;
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116 | 4040ab72 | David Gibson | } |
117 | 4040ab72 | David Gibson | |
118 | 3954d33a | Anthony Liguori | if (pc->dt_type) {
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119 | 4040ab72 | David Gibson | ret = fdt_setprop_string(fdt, node_off, "device_type",
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120 | 3954d33a | Anthony Liguori | pc->dt_type); |
121 | 4040ab72 | David Gibson | if (ret < 0) { |
122 | 4040ab72 | David Gibson | return ret;
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123 | 4040ab72 | David Gibson | } |
124 | 4040ab72 | David Gibson | } |
125 | 4040ab72 | David Gibson | |
126 | 3954d33a | Anthony Liguori | if (pc->dt_compatible) {
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127 | 4040ab72 | David Gibson | ret = fdt_setprop_string(fdt, node_off, "compatible",
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128 | 3954d33a | Anthony Liguori | pc->dt_compatible); |
129 | 4040ab72 | David Gibson | if (ret < 0) { |
130 | 4040ab72 | David Gibson | return ret;
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131 | 4040ab72 | David Gibson | } |
132 | 4040ab72 | David Gibson | } |
133 | 4040ab72 | David Gibson | |
134 | 00dc738d | David Gibson | if (dev->qirq) {
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135 | 00dc738d | David Gibson | uint32_t ints_prop[] = {cpu_to_be32(dev->vio_irq_num), 0};
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136 | 00dc738d | David Gibson | |
137 | 00dc738d | David Gibson | ret = fdt_setprop(fdt, node_off, "interrupts", ints_prop,
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138 | 00dc738d | David Gibson | sizeof(ints_prop));
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139 | 00dc738d | David Gibson | if (ret < 0) { |
140 | 00dc738d | David Gibson | return ret;
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141 | 00dc738d | David Gibson | } |
142 | 00dc738d | David Gibson | } |
143 | 00dc738d | David Gibson | |
144 | ee86dfee | David Gibson | if (dev->rtce_window_size) {
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145 | ee86dfee | David Gibson | uint32_t dma_prop[] = {cpu_to_be32(dev->reg), |
146 | ee86dfee | David Gibson | 0, 0, |
147 | ee86dfee | David Gibson | 0, cpu_to_be32(dev->rtce_window_size)};
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148 | ee86dfee | David Gibson | |
149 | ee86dfee | David Gibson | ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2); |
150 | ee86dfee | David Gibson | if (ret < 0) { |
151 | ee86dfee | David Gibson | return ret;
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152 | ee86dfee | David Gibson | } |
153 | ee86dfee | David Gibson | |
154 | ee86dfee | David Gibson | ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2); |
155 | ee86dfee | David Gibson | if (ret < 0) { |
156 | ee86dfee | David Gibson | return ret;
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157 | ee86dfee | David Gibson | } |
158 | ee86dfee | David Gibson | |
159 | ee86dfee | David Gibson | ret = fdt_setprop(fdt, node_off, "ibm,my-dma-window", dma_prop,
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160 | ee86dfee | David Gibson | sizeof(dma_prop));
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161 | ee86dfee | David Gibson | if (ret < 0) { |
162 | ee86dfee | David Gibson | return ret;
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163 | ee86dfee | David Gibson | } |
164 | ee86dfee | David Gibson | } |
165 | ee86dfee | David Gibson | |
166 | 3954d33a | Anthony Liguori | if (pc->devnode) {
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167 | 3954d33a | Anthony Liguori | ret = (pc->devnode)(dev, fdt, node_off); |
168 | 4040ab72 | David Gibson | if (ret < 0) { |
169 | 4040ab72 | David Gibson | return ret;
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170 | 4040ab72 | David Gibson | } |
171 | 4040ab72 | David Gibson | } |
172 | 4040ab72 | David Gibson | |
173 | 4040ab72 | David Gibson | return node_off;
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174 | 4040ab72 | David Gibson | } |
175 | 4040ab72 | David Gibson | #endif /* CONFIG_FDT */ |
176 | 4040ab72 | David Gibson | |
177 | ee86dfee | David Gibson | /*
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178 | ee86dfee | David Gibson | * RTCE handling
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179 | ee86dfee | David Gibson | */
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180 | ee86dfee | David Gibson | |
181 | ee86dfee | David Gibson | static void rtce_init(VIOsPAPRDevice *dev) |
182 | ee86dfee | David Gibson | { |
183 | ee86dfee | David Gibson | size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) |
184 | ee86dfee | David Gibson | * sizeof(VIOsPAPR_RTCE);
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185 | ee86dfee | David Gibson | |
186 | ee86dfee | David Gibson | if (size) {
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187 | 0f5cb298 | David Gibson | dev->rtce_table = kvmppc_create_spapr_tce(dev->reg, |
188 | 0f5cb298 | David Gibson | dev->rtce_window_size, |
189 | 0f5cb298 | David Gibson | &dev->kvmtce_fd); |
190 | 0f5cb298 | David Gibson | |
191 | 0f5cb298 | David Gibson | if (!dev->rtce_table) {
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192 | 0f5cb298 | David Gibson | dev->rtce_table = g_malloc0(size); |
193 | 0f5cb298 | David Gibson | } |
194 | ee86dfee | David Gibson | } |
195 | ee86dfee | David Gibson | } |
196 | ee86dfee | David Gibson | |
197 | e2684c0b | Andreas Färber | static target_ulong h_put_tce(CPUPPCState *env, sPAPREnvironment *spapr,
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198 | ee86dfee | David Gibson | target_ulong opcode, target_ulong *args) |
199 | ee86dfee | David Gibson | { |
200 | ee86dfee | David Gibson | target_ulong liobn = args[0];
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201 | ee86dfee | David Gibson | target_ulong ioba = args[1];
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202 | ee86dfee | David Gibson | target_ulong tce = args[2];
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203 | ee86dfee | David Gibson | VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, liobn); |
204 | ee86dfee | David Gibson | VIOsPAPR_RTCE *rtce; |
205 | ee86dfee | David Gibson | |
206 | ee86dfee | David Gibson | if (!dev) {
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207 | d9599c92 | David Gibson | hcall_dprintf("LIOBN 0x" TARGET_FMT_lx " does not exist\n", liobn); |
208 | ee86dfee | David Gibson | return H_PARAMETER;
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209 | ee86dfee | David Gibson | } |
210 | ee86dfee | David Gibson | |
211 | ee86dfee | David Gibson | ioba &= ~(SPAPR_VIO_TCE_PAGE_SIZE - 1);
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212 | ee86dfee | David Gibson | |
213 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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214 | ee86dfee | David Gibson | fprintf(stderr, "spapr_vio_put_tce on %s ioba 0x" TARGET_FMT_lx
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215 | ee86dfee | David Gibson | " TCE 0x" TARGET_FMT_lx "\n", dev->qdev.id, ioba, tce); |
216 | ee86dfee | David Gibson | #endif
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217 | ee86dfee | David Gibson | |
218 | ee86dfee | David Gibson | if (ioba >= dev->rtce_window_size) {
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219 | d9599c92 | David Gibson | hcall_dprintf("Out-of-bounds IOBA 0x" TARGET_FMT_lx "\n", ioba); |
220 | ee86dfee | David Gibson | return H_PARAMETER;
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221 | ee86dfee | David Gibson | } |
222 | ee86dfee | David Gibson | |
223 | ee86dfee | David Gibson | rtce = dev->rtce_table + (ioba >> SPAPR_VIO_TCE_PAGE_SHIFT); |
224 | ee86dfee | David Gibson | rtce->tce = tce; |
225 | ee86dfee | David Gibson | |
226 | ee86dfee | David Gibson | return H_SUCCESS;
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227 | ee86dfee | David Gibson | } |
228 | ee86dfee | David Gibson | |
229 | ee86dfee | David Gibson | int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba,
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230 | ee86dfee | David Gibson | target_ulong len, enum VIOsPAPR_TCEAccess access)
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231 | ee86dfee | David Gibson | { |
232 | ee86dfee | David Gibson | int start, end, i;
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233 | ee86dfee | David Gibson | |
234 | ee86dfee | David Gibson | start = ioba >> SPAPR_VIO_TCE_PAGE_SHIFT; |
235 | ee86dfee | David Gibson | end = (ioba + len - 1) >> SPAPR_VIO_TCE_PAGE_SHIFT;
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236 | ee86dfee | David Gibson | |
237 | ee86dfee | David Gibson | for (i = start; i <= end; i++) {
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238 | ee86dfee | David Gibson | if ((dev->rtce_table[i].tce & access) != access) {
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239 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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240 | ee86dfee | David Gibson | fprintf(stderr, "FAIL on %d\n", i);
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241 | ee86dfee | David Gibson | #endif
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242 | ee86dfee | David Gibson | return -1; |
243 | ee86dfee | David Gibson | } |
244 | ee86dfee | David Gibson | } |
245 | ee86dfee | David Gibson | |
246 | ee86dfee | David Gibson | return 0; |
247 | ee86dfee | David Gibson | } |
248 | ee86dfee | David Gibson | |
249 | ee86dfee | David Gibson | int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, const void *buf, |
250 | ee86dfee | David Gibson | uint32_t size) |
251 | ee86dfee | David Gibson | { |
252 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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253 | ee86dfee | David Gibson | fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n",
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254 | ee86dfee | David Gibson | (unsigned long long)taddr, size); |
255 | ee86dfee | David Gibson | #endif
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256 | ee86dfee | David Gibson | |
257 | 08942ac1 | Ben Herrenschmidt | /* Check for bypass */
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258 | 08942ac1 | Ben Herrenschmidt | if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) {
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259 | 08942ac1 | Ben Herrenschmidt | cpu_physical_memory_write(taddr, buf, size); |
260 | 08942ac1 | Ben Herrenschmidt | return 0; |
261 | 08942ac1 | Ben Herrenschmidt | } |
262 | 08942ac1 | Ben Herrenschmidt | |
263 | ee86dfee | David Gibson | while (size) {
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264 | ee86dfee | David Gibson | uint64_t tce; |
265 | ee86dfee | David Gibson | uint32_t lsize; |
266 | ee86dfee | David Gibson | uint64_t txaddr; |
267 | ee86dfee | David Gibson | |
268 | ee86dfee | David Gibson | /* Check if we are in bound */
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269 | ee86dfee | David Gibson | if (taddr >= dev->rtce_window_size) {
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270 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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271 | ee86dfee | David Gibson | fprintf(stderr, "spapr_tce_dma_write out of bounds\n");
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272 | ee86dfee | David Gibson | #endif
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273 | ee86dfee | David Gibson | return H_DEST_PARM;
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274 | ee86dfee | David Gibson | } |
275 | ee86dfee | David Gibson | tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; |
276 | ee86dfee | David Gibson | |
277 | ee86dfee | David Gibson | /* How much til end of page ? */
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278 | ee86dfee | David Gibson | lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1);
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279 | ee86dfee | David Gibson | |
280 | ee86dfee | David Gibson | /* Check TCE */
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281 | ee86dfee | David Gibson | if (!(tce & 2)) { |
282 | ee86dfee | David Gibson | return H_DEST_PARM;
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283 | ee86dfee | David Gibson | } |
284 | ee86dfee | David Gibson | |
285 | ee86dfee | David Gibson | /* Translate */
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286 | ee86dfee | David Gibson | txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | |
287 | ee86dfee | David Gibson | (taddr & SPAPR_VIO_TCE_PAGE_MASK); |
288 | ee86dfee | David Gibson | |
289 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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290 | ee86dfee | David Gibson | fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n",
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291 | ee86dfee | David Gibson | (unsigned long long)txaddr, lsize); |
292 | ee86dfee | David Gibson | #endif
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293 | ee86dfee | David Gibson | |
294 | ee86dfee | David Gibson | /* Do it */
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295 | ee86dfee | David Gibson | cpu_physical_memory_write(txaddr, buf, lsize); |
296 | ee86dfee | David Gibson | buf += lsize; |
297 | ee86dfee | David Gibson | taddr += lsize; |
298 | ee86dfee | David Gibson | size -= lsize; |
299 | ee86dfee | David Gibson | } |
300 | ee86dfee | David Gibson | return 0; |
301 | ee86dfee | David Gibson | } |
302 | ee86dfee | David Gibson | |
303 | ee86dfee | David Gibson | int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size)
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304 | ee86dfee | David Gibson | { |
305 | ee86dfee | David Gibson | /* FIXME: allocating a temp buffer is nasty, but just stepping
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306 | ee86dfee | David Gibson | * through writing zeroes is awkward. This will do for now. */
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307 | ee86dfee | David Gibson | uint8_t zeroes[size]; |
308 | ee86dfee | David Gibson | |
309 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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310 | ee86dfee | David Gibson | fprintf(stderr, "spapr_tce_dma_zero taddr=0x%llx size=0x%x\n",
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311 | ee86dfee | David Gibson | (unsigned long long)taddr, size); |
312 | ee86dfee | David Gibson | #endif
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313 | ee86dfee | David Gibson | |
314 | ee86dfee | David Gibson | memset(zeroes, 0, size);
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315 | ee86dfee | David Gibson | return spapr_tce_dma_write(dev, taddr, zeroes, size);
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316 | ee86dfee | David Gibson | } |
317 | ee86dfee | David Gibson | |
318 | ee86dfee | David Gibson | void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val)
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319 | ee86dfee | David Gibson | { |
320 | ee86dfee | David Gibson | spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
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321 | ee86dfee | David Gibson | } |
322 | ee86dfee | David Gibson | |
323 | ee86dfee | David Gibson | void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val)
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324 | ee86dfee | David Gibson | { |
325 | ee86dfee | David Gibson | val = tswap16(val); |
326 | ee86dfee | David Gibson | spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
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327 | ee86dfee | David Gibson | } |
328 | ee86dfee | David Gibson | |
329 | ee86dfee | David Gibson | |
330 | ee86dfee | David Gibson | void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val)
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331 | ee86dfee | David Gibson | { |
332 | ee86dfee | David Gibson | val = tswap32(val); |
333 | ee86dfee | David Gibson | spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
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334 | ee86dfee | David Gibson | } |
335 | ee86dfee | David Gibson | |
336 | ee86dfee | David Gibson | void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val)
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337 | ee86dfee | David Gibson | { |
338 | ee86dfee | David Gibson | val = tswap64(val); |
339 | ee86dfee | David Gibson | spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
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340 | ee86dfee | David Gibson | } |
341 | ee86dfee | David Gibson | |
342 | ee86dfee | David Gibson | int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, void *buf, |
343 | ee86dfee | David Gibson | uint32_t size) |
344 | ee86dfee | David Gibson | { |
345 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
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346 | ee86dfee | David Gibson | fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n",
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347 | ee86dfee | David Gibson | (unsigned long long)taddr, size); |
348 | ee86dfee | David Gibson | #endif
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349 | ee86dfee | David Gibson | |
350 | 08942ac1 | Ben Herrenschmidt | /* Check for bypass */
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351 | 08942ac1 | Ben Herrenschmidt | if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) {
|
352 | 08942ac1 | Ben Herrenschmidt | cpu_physical_memory_read(taddr, buf, size); |
353 | 08942ac1 | Ben Herrenschmidt | return 0; |
354 | 08942ac1 | Ben Herrenschmidt | } |
355 | 08942ac1 | Ben Herrenschmidt | |
356 | ee86dfee | David Gibson | while (size) {
|
357 | ee86dfee | David Gibson | uint64_t tce; |
358 | ee86dfee | David Gibson | uint32_t lsize; |
359 | ee86dfee | David Gibson | uint64_t txaddr; |
360 | ee86dfee | David Gibson | |
361 | ee86dfee | David Gibson | /* Check if we are in bound */
|
362 | ee86dfee | David Gibson | if (taddr >= dev->rtce_window_size) {
|
363 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
|
364 | ee86dfee | David Gibson | fprintf(stderr, "spapr_tce_dma_read out of bounds\n");
|
365 | ee86dfee | David Gibson | #endif
|
366 | ee86dfee | David Gibson | return H_DEST_PARM;
|
367 | ee86dfee | David Gibson | } |
368 | ee86dfee | David Gibson | tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; |
369 | ee86dfee | David Gibson | |
370 | ee86dfee | David Gibson | /* How much til end of page ? */
|
371 | ee86dfee | David Gibson | lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1);
|
372 | ee86dfee | David Gibson | |
373 | ee86dfee | David Gibson | /* Check TCE */
|
374 | ee86dfee | David Gibson | if (!(tce & 1)) { |
375 | ee86dfee | David Gibson | return H_DEST_PARM;
|
376 | ee86dfee | David Gibson | } |
377 | ee86dfee | David Gibson | |
378 | ee86dfee | David Gibson | /* Translate */
|
379 | ee86dfee | David Gibson | txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | |
380 | ee86dfee | David Gibson | (taddr & SPAPR_VIO_TCE_PAGE_MASK); |
381 | ee86dfee | David Gibson | |
382 | ee86dfee | David Gibson | #ifdef DEBUG_TCE
|
383 | ee86dfee | David Gibson | fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n",
|
384 | ee86dfee | David Gibson | (unsigned long long)txaddr, lsize); |
385 | ee86dfee | David Gibson | #endif
|
386 | ee86dfee | David Gibson | /* Do it */
|
387 | ee86dfee | David Gibson | cpu_physical_memory_read(txaddr, buf, lsize); |
388 | ee86dfee | David Gibson | buf += lsize; |
389 | ee86dfee | David Gibson | taddr += lsize; |
390 | ee86dfee | David Gibson | size -= lsize; |
391 | ee86dfee | David Gibson | } |
392 | ee86dfee | David Gibson | return H_SUCCESS;
|
393 | ee86dfee | David Gibson | } |
394 | ee86dfee | David Gibson | |
395 | ee86dfee | David Gibson | uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr) |
396 | ee86dfee | David Gibson | { |
397 | ee86dfee | David Gibson | uint64_t val; |
398 | ee86dfee | David Gibson | |
399 | ee86dfee | David Gibson | spapr_tce_dma_read(dev, taddr, &val, sizeof(val));
|
400 | ee86dfee | David Gibson | return tswap64(val);
|
401 | ee86dfee | David Gibson | } |
402 | ee86dfee | David Gibson | |
403 | b45d63b6 | Ben Herrenschmidt | /*
|
404 | b45d63b6 | Ben Herrenschmidt | * CRQ handling
|
405 | b45d63b6 | Ben Herrenschmidt | */
|
406 | e2684c0b | Andreas Färber | static target_ulong h_reg_crq(CPUPPCState *env, sPAPREnvironment *spapr,
|
407 | b45d63b6 | Ben Herrenschmidt | target_ulong opcode, target_ulong *args) |
408 | b45d63b6 | Ben Herrenschmidt | { |
409 | b45d63b6 | Ben Herrenschmidt | target_ulong reg = args[0];
|
410 | b45d63b6 | Ben Herrenschmidt | target_ulong queue_addr = args[1];
|
411 | b45d63b6 | Ben Herrenschmidt | target_ulong queue_len = args[2];
|
412 | b45d63b6 | Ben Herrenschmidt | VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
413 | b45d63b6 | Ben Herrenschmidt | |
414 | b45d63b6 | Ben Herrenschmidt | if (!dev) {
|
415 | d9599c92 | David Gibson | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n", reg); |
416 | b45d63b6 | Ben Herrenschmidt | return H_PARAMETER;
|
417 | b45d63b6 | Ben Herrenschmidt | } |
418 | b45d63b6 | Ben Herrenschmidt | |
419 | b45d63b6 | Ben Herrenschmidt | /* We can't grok a queue size bigger than 256M for now */
|
420 | b45d63b6 | Ben Herrenschmidt | if (queue_len < 0x1000 || queue_len > 0x10000000) { |
421 | d9599c92 | David Gibson | hcall_dprintf("Queue size too small or too big (0x" TARGET_FMT_lx
|
422 | d9599c92 | David Gibson | ")\n", queue_len);
|
423 | b45d63b6 | Ben Herrenschmidt | return H_PARAMETER;
|
424 | b45d63b6 | Ben Herrenschmidt | } |
425 | b45d63b6 | Ben Herrenschmidt | |
426 | b45d63b6 | Ben Herrenschmidt | /* Check queue alignment */
|
427 | b45d63b6 | Ben Herrenschmidt | if (queue_addr & 0xfff) { |
428 | d9599c92 | David Gibson | hcall_dprintf("Queue not aligned (0x" TARGET_FMT_lx ")\n", queue_addr); |
429 | b45d63b6 | Ben Herrenschmidt | return H_PARAMETER;
|
430 | b45d63b6 | Ben Herrenschmidt | } |
431 | b45d63b6 | Ben Herrenschmidt | |
432 | b45d63b6 | Ben Herrenschmidt | /* Check if device supports CRQs */
|
433 | b45d63b6 | Ben Herrenschmidt | if (!dev->crq.SendFunc) {
|
434 | 8e01f355 | David Gibson | hcall_dprintf("Device does not support CRQ\n");
|
435 | b45d63b6 | Ben Herrenschmidt | return H_NOT_FOUND;
|
436 | b45d63b6 | Ben Herrenschmidt | } |
437 | b45d63b6 | Ben Herrenschmidt | |
438 | b45d63b6 | Ben Herrenschmidt | /* Already a queue ? */
|
439 | b45d63b6 | Ben Herrenschmidt | if (dev->crq.qsize) {
|
440 | 8e01f355 | David Gibson | hcall_dprintf("CRQ already registered\n");
|
441 | b45d63b6 | Ben Herrenschmidt | return H_RESOURCE;
|
442 | b45d63b6 | Ben Herrenschmidt | } |
443 | b45d63b6 | Ben Herrenschmidt | dev->crq.qladdr = queue_addr; |
444 | b45d63b6 | Ben Herrenschmidt | dev->crq.qsize = queue_len; |
445 | b45d63b6 | Ben Herrenschmidt | dev->crq.qnext = 0;
|
446 | b45d63b6 | Ben Herrenschmidt | |
447 | b45d63b6 | Ben Herrenschmidt | dprintf("CRQ for dev 0x" TARGET_FMT_lx " registered at 0x" |
448 | b45d63b6 | Ben Herrenschmidt | TARGET_FMT_lx "/0x" TARGET_FMT_lx "\n", |
449 | b45d63b6 | Ben Herrenschmidt | reg, queue_addr, queue_len); |
450 | b45d63b6 | Ben Herrenschmidt | return H_SUCCESS;
|
451 | b45d63b6 | Ben Herrenschmidt | } |
452 | b45d63b6 | Ben Herrenschmidt | |
453 | 8e01f355 | David Gibson | static target_ulong free_crq(VIOsPAPRDevice *dev)
|
454 | 8e01f355 | David Gibson | { |
455 | 8e01f355 | David Gibson | dev->crq.qladdr = 0;
|
456 | 8e01f355 | David Gibson | dev->crq.qsize = 0;
|
457 | 8e01f355 | David Gibson | dev->crq.qnext = 0;
|
458 | 8e01f355 | David Gibson | |
459 | 8e01f355 | David Gibson | dprintf("CRQ for dev 0x%" PRIx32 " freed\n", dev->reg); |
460 | 8e01f355 | David Gibson | |
461 | 8e01f355 | David Gibson | return H_SUCCESS;
|
462 | 8e01f355 | David Gibson | } |
463 | 8e01f355 | David Gibson | |
464 | e2684c0b | Andreas Färber | static target_ulong h_free_crq(CPUPPCState *env, sPAPREnvironment *spapr,
|
465 | b45d63b6 | Ben Herrenschmidt | target_ulong opcode, target_ulong *args) |
466 | b45d63b6 | Ben Herrenschmidt | { |
467 | b45d63b6 | Ben Herrenschmidt | target_ulong reg = args[0];
|
468 | b45d63b6 | Ben Herrenschmidt | VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
469 | b45d63b6 | Ben Herrenschmidt | |
470 | b45d63b6 | Ben Herrenschmidt | if (!dev) {
|
471 | d9599c92 | David Gibson | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n", reg); |
472 | b45d63b6 | Ben Herrenschmidt | return H_PARAMETER;
|
473 | b45d63b6 | Ben Herrenschmidt | } |
474 | b45d63b6 | Ben Herrenschmidt | |
475 | 8e01f355 | David Gibson | return free_crq(dev);
|
476 | b45d63b6 | Ben Herrenschmidt | } |
477 | b45d63b6 | Ben Herrenschmidt | |
478 | e2684c0b | Andreas Färber | static target_ulong h_send_crq(CPUPPCState *env, sPAPREnvironment *spapr,
|
479 | b45d63b6 | Ben Herrenschmidt | target_ulong opcode, target_ulong *args) |
480 | b45d63b6 | Ben Herrenschmidt | { |
481 | b45d63b6 | Ben Herrenschmidt | target_ulong reg = args[0];
|
482 | b45d63b6 | Ben Herrenschmidt | target_ulong msg_hi = args[1];
|
483 | b45d63b6 | Ben Herrenschmidt | target_ulong msg_lo = args[2];
|
484 | b45d63b6 | Ben Herrenschmidt | VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
485 | b45d63b6 | Ben Herrenschmidt | uint64_t crq_mangle[2];
|
486 | b45d63b6 | Ben Herrenschmidt | |
487 | b45d63b6 | Ben Herrenschmidt | if (!dev) {
|
488 | d9599c92 | David Gibson | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n", reg); |
489 | b45d63b6 | Ben Herrenschmidt | return H_PARAMETER;
|
490 | b45d63b6 | Ben Herrenschmidt | } |
491 | b45d63b6 | Ben Herrenschmidt | crq_mangle[0] = cpu_to_be64(msg_hi);
|
492 | b45d63b6 | Ben Herrenschmidt | crq_mangle[1] = cpu_to_be64(msg_lo);
|
493 | b45d63b6 | Ben Herrenschmidt | |
494 | b45d63b6 | Ben Herrenschmidt | if (dev->crq.SendFunc) {
|
495 | b45d63b6 | Ben Herrenschmidt | return dev->crq.SendFunc(dev, (uint8_t *)crq_mangle);
|
496 | b45d63b6 | Ben Herrenschmidt | } |
497 | b45d63b6 | Ben Herrenschmidt | |
498 | b45d63b6 | Ben Herrenschmidt | return H_HARDWARE;
|
499 | b45d63b6 | Ben Herrenschmidt | } |
500 | b45d63b6 | Ben Herrenschmidt | |
501 | e2684c0b | Andreas Färber | static target_ulong h_enable_crq(CPUPPCState *env, sPAPREnvironment *spapr,
|
502 | b45d63b6 | Ben Herrenschmidt | target_ulong opcode, target_ulong *args) |
503 | b45d63b6 | Ben Herrenschmidt | { |
504 | b45d63b6 | Ben Herrenschmidt | target_ulong reg = args[0];
|
505 | b45d63b6 | Ben Herrenschmidt | VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
506 | b45d63b6 | Ben Herrenschmidt | |
507 | b45d63b6 | Ben Herrenschmidt | if (!dev) {
|
508 | d9599c92 | David Gibson | hcall_dprintf("Unit 0x" TARGET_FMT_lx " does not exist\n", reg); |
509 | b45d63b6 | Ben Herrenschmidt | return H_PARAMETER;
|
510 | b45d63b6 | Ben Herrenschmidt | } |
511 | b45d63b6 | Ben Herrenschmidt | |
512 | b45d63b6 | Ben Herrenschmidt | return 0; |
513 | b45d63b6 | Ben Herrenschmidt | } |
514 | b45d63b6 | Ben Herrenschmidt | |
515 | b45d63b6 | Ben Herrenschmidt | /* Returns negative error, 0 success, or positive: queue full */
|
516 | b45d63b6 | Ben Herrenschmidt | int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
|
517 | b45d63b6 | Ben Herrenschmidt | { |
518 | b45d63b6 | Ben Herrenschmidt | int rc;
|
519 | b45d63b6 | Ben Herrenschmidt | uint8_t byte; |
520 | b45d63b6 | Ben Herrenschmidt | |
521 | b45d63b6 | Ben Herrenschmidt | if (!dev->crq.qsize) {
|
522 | b45d63b6 | Ben Herrenschmidt | fprintf(stderr, "spapr_vio_send_creq on uninitialized queue\n");
|
523 | b45d63b6 | Ben Herrenschmidt | return -1; |
524 | b45d63b6 | Ben Herrenschmidt | } |
525 | b45d63b6 | Ben Herrenschmidt | |
526 | b45d63b6 | Ben Herrenschmidt | /* Maybe do a fast path for KVM just writing to the pages */
|
527 | b45d63b6 | Ben Herrenschmidt | rc = spapr_tce_dma_read(dev, dev->crq.qladdr + dev->crq.qnext, &byte, 1);
|
528 | b45d63b6 | Ben Herrenschmidt | if (rc) {
|
529 | b45d63b6 | Ben Herrenschmidt | return rc;
|
530 | b45d63b6 | Ben Herrenschmidt | } |
531 | b45d63b6 | Ben Herrenschmidt | if (byte != 0) { |
532 | b45d63b6 | Ben Herrenschmidt | return 1; |
533 | b45d63b6 | Ben Herrenschmidt | } |
534 | b45d63b6 | Ben Herrenschmidt | |
535 | b45d63b6 | Ben Herrenschmidt | rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext + 8,
|
536 | b45d63b6 | Ben Herrenschmidt | &crq[8], 8); |
537 | b45d63b6 | Ben Herrenschmidt | if (rc) {
|
538 | b45d63b6 | Ben Herrenschmidt | return rc;
|
539 | b45d63b6 | Ben Herrenschmidt | } |
540 | b45d63b6 | Ben Herrenschmidt | |
541 | b45d63b6 | Ben Herrenschmidt | kvmppc_eieio(); |
542 | b45d63b6 | Ben Herrenschmidt | |
543 | b45d63b6 | Ben Herrenschmidt | rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext, crq, 8);
|
544 | b45d63b6 | Ben Herrenschmidt | if (rc) {
|
545 | b45d63b6 | Ben Herrenschmidt | return rc;
|
546 | b45d63b6 | Ben Herrenschmidt | } |
547 | b45d63b6 | Ben Herrenschmidt | |
548 | b45d63b6 | Ben Herrenschmidt | dev->crq.qnext = (dev->crq.qnext + 16) % dev->crq.qsize;
|
549 | b45d63b6 | Ben Herrenschmidt | |
550 | b45d63b6 | Ben Herrenschmidt | if (dev->signal_state & 1) { |
551 | b45d63b6 | Ben Herrenschmidt | qemu_irq_pulse(dev->qirq); |
552 | b45d63b6 | Ben Herrenschmidt | } |
553 | b45d63b6 | Ben Herrenschmidt | |
554 | b45d63b6 | Ben Herrenschmidt | return 0; |
555 | b45d63b6 | Ben Herrenschmidt | } |
556 | b45d63b6 | Ben Herrenschmidt | |
557 | 08942ac1 | Ben Herrenschmidt | /* "quiesce" handling */
|
558 | 08942ac1 | Ben Herrenschmidt | |
559 | 08942ac1 | Ben Herrenschmidt | static void spapr_vio_quiesce_one(VIOsPAPRDevice *dev) |
560 | 08942ac1 | Ben Herrenschmidt | { |
561 | 08942ac1 | Ben Herrenschmidt | dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS; |
562 | 08942ac1 | Ben Herrenschmidt | |
563 | 08942ac1 | Ben Herrenschmidt | if (dev->rtce_table) {
|
564 | 08942ac1 | Ben Herrenschmidt | size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) |
565 | 08942ac1 | Ben Herrenschmidt | * sizeof(VIOsPAPR_RTCE);
|
566 | 08942ac1 | Ben Herrenschmidt | memset(dev->rtce_table, 0, size);
|
567 | 08942ac1 | Ben Herrenschmidt | } |
568 | 08942ac1 | Ben Herrenschmidt | |
569 | 08942ac1 | Ben Herrenschmidt | dev->crq.qladdr = 0;
|
570 | 08942ac1 | Ben Herrenschmidt | dev->crq.qsize = 0;
|
571 | 08942ac1 | Ben Herrenschmidt | dev->crq.qnext = 0;
|
572 | 08942ac1 | Ben Herrenschmidt | } |
573 | 08942ac1 | Ben Herrenschmidt | |
574 | 08942ac1 | Ben Herrenschmidt | static void rtas_set_tce_bypass(sPAPREnvironment *spapr, uint32_t token, |
575 | 08942ac1 | Ben Herrenschmidt | uint32_t nargs, target_ulong args, |
576 | 08942ac1 | Ben Herrenschmidt | uint32_t nret, target_ulong rets) |
577 | 08942ac1 | Ben Herrenschmidt | { |
578 | 08942ac1 | Ben Herrenschmidt | VIOsPAPRBus *bus = spapr->vio_bus; |
579 | 08942ac1 | Ben Herrenschmidt | VIOsPAPRDevice *dev; |
580 | 08942ac1 | Ben Herrenschmidt | uint32_t unit, enable; |
581 | 08942ac1 | Ben Herrenschmidt | |
582 | 08942ac1 | Ben Herrenschmidt | if (nargs != 2) { |
583 | 08942ac1 | Ben Herrenschmidt | rtas_st(rets, 0, -3); |
584 | 08942ac1 | Ben Herrenschmidt | return;
|
585 | 08942ac1 | Ben Herrenschmidt | } |
586 | 08942ac1 | Ben Herrenschmidt | unit = rtas_ld(args, 0);
|
587 | 08942ac1 | Ben Herrenschmidt | enable = rtas_ld(args, 1);
|
588 | 08942ac1 | Ben Herrenschmidt | dev = spapr_vio_find_by_reg(bus, unit); |
589 | 08942ac1 | Ben Herrenschmidt | if (!dev) {
|
590 | 08942ac1 | Ben Herrenschmidt | rtas_st(rets, 0, -3); |
591 | 08942ac1 | Ben Herrenschmidt | return;
|
592 | 08942ac1 | Ben Herrenschmidt | } |
593 | 08942ac1 | Ben Herrenschmidt | if (enable) {
|
594 | 08942ac1 | Ben Herrenschmidt | dev->flags |= VIO_PAPR_FLAG_DMA_BYPASS; |
595 | 08942ac1 | Ben Herrenschmidt | } else {
|
596 | 08942ac1 | Ben Herrenschmidt | dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS; |
597 | 08942ac1 | Ben Herrenschmidt | } |
598 | 08942ac1 | Ben Herrenschmidt | |
599 | 08942ac1 | Ben Herrenschmidt | rtas_st(rets, 0, 0); |
600 | 08942ac1 | Ben Herrenschmidt | } |
601 | 08942ac1 | Ben Herrenschmidt | |
602 | 08942ac1 | Ben Herrenschmidt | static void rtas_quiesce(sPAPREnvironment *spapr, uint32_t token, |
603 | 08942ac1 | Ben Herrenschmidt | uint32_t nargs, target_ulong args, |
604 | 08942ac1 | Ben Herrenschmidt | uint32_t nret, target_ulong rets) |
605 | 08942ac1 | Ben Herrenschmidt | { |
606 | 08942ac1 | Ben Herrenschmidt | VIOsPAPRBus *bus = spapr->vio_bus; |
607 | 08942ac1 | Ben Herrenschmidt | DeviceState *qdev; |
608 | 08942ac1 | Ben Herrenschmidt | VIOsPAPRDevice *dev = NULL;
|
609 | 08942ac1 | Ben Herrenschmidt | |
610 | 08942ac1 | Ben Herrenschmidt | if (nargs != 0) { |
611 | 08942ac1 | Ben Herrenschmidt | rtas_st(rets, 0, -3); |
612 | 08942ac1 | Ben Herrenschmidt | return;
|
613 | 08942ac1 | Ben Herrenschmidt | } |
614 | 08942ac1 | Ben Herrenschmidt | |
615 | d8bb00d6 | Paolo Bonzini | QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
616 | 08942ac1 | Ben Herrenschmidt | dev = (VIOsPAPRDevice *)qdev; |
617 | 08942ac1 | Ben Herrenschmidt | spapr_vio_quiesce_one(dev); |
618 | 08942ac1 | Ben Herrenschmidt | } |
619 | 08942ac1 | Ben Herrenschmidt | |
620 | 08942ac1 | Ben Herrenschmidt | rtas_st(rets, 0, 0); |
621 | 08942ac1 | Ben Herrenschmidt | } |
622 | 08942ac1 | Ben Herrenschmidt | |
623 | d601fac4 | David Gibson | static VIOsPAPRDevice *reg_conflict(VIOsPAPRDevice *dev)
|
624 | 9fc380d3 | Michael Ellerman | { |
625 | d601fac4 | David Gibson | VIOsPAPRBus *bus = DO_UPCAST(VIOsPAPRBus, bus, dev->qdev.parent_bus); |
626 | 9fc380d3 | Michael Ellerman | DeviceState *qdev; |
627 | d601fac4 | David Gibson | VIOsPAPRDevice *other; |
628 | 9fc380d3 | Michael Ellerman | |
629 | 9fc380d3 | Michael Ellerman | /*
|
630 | d601fac4 | David Gibson | * Check for a device other than the given one which is already
|
631 | d601fac4 | David Gibson | * using the requested address. We have to open code this because
|
632 | d601fac4 | David Gibson | * the given dev might already be in the list.
|
633 | 9fc380d3 | Michael Ellerman | */
|
634 | d601fac4 | David Gibson | QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
635 | d601fac4 | David Gibson | other = DO_UPCAST(VIOsPAPRDevice, qdev, qdev); |
636 | 9fc380d3 | Michael Ellerman | |
637 | d601fac4 | David Gibson | if (other != dev && other->reg == dev->reg) {
|
638 | d601fac4 | David Gibson | return other;
|
639 | 9fc380d3 | Michael Ellerman | } |
640 | 9fc380d3 | Michael Ellerman | } |
641 | 9fc380d3 | Michael Ellerman | |
642 | 9fc380d3 | Michael Ellerman | return 0; |
643 | 9fc380d3 | Michael Ellerman | } |
644 | 9fc380d3 | Michael Ellerman | |
645 | b1c7f725 | David Gibson | static void spapr_vio_busdev_reset(DeviceState *qdev) |
646 | 8e01f355 | David Gibson | { |
647 | b1c7f725 | David Gibson | VIOsPAPRDevice *dev = DO_UPCAST(VIOsPAPRDevice, qdev, qdev); |
648 | b1c7f725 | David Gibson | VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
649 | 8e01f355 | David Gibson | |
650 | 8e01f355 | David Gibson | if (dev->crq.qsize) {
|
651 | 8e01f355 | David Gibson | free_crq(dev); |
652 | 8e01f355 | David Gibson | } |
653 | b1c7f725 | David Gibson | |
654 | b1c7f725 | David Gibson | if (pc->reset) {
|
655 | b1c7f725 | David Gibson | pc->reset(dev); |
656 | b1c7f725 | David Gibson | } |
657 | 8e01f355 | David Gibson | } |
658 | 8e01f355 | David Gibson | |
659 | d307af79 | Anthony Liguori | static int spapr_vio_busdev_init(DeviceState *qdev) |
660 | 4040ab72 | David Gibson | { |
661 | 4040ab72 | David Gibson | VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev; |
662 | 3954d33a | Anthony Liguori | VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
663 | 4040ab72 | David Gibson | char *id;
|
664 | 9fc380d3 | Michael Ellerman | |
665 | d601fac4 | David Gibson | if (dev->reg != -1) { |
666 | d601fac4 | David Gibson | /*
|
667 | d601fac4 | David Gibson | * Explicitly assigned address, just verify that no-one else
|
668 | d601fac4 | David Gibson | * is using it. other mechanism). We have to open code this
|
669 | d601fac4 | David Gibson | * rather than using spapr_vio_find_by_reg() because sdev
|
670 | d601fac4 | David Gibson | * itself is already in the list.
|
671 | d601fac4 | David Gibson | */
|
672 | d601fac4 | David Gibson | VIOsPAPRDevice *other = reg_conflict(dev); |
673 | d601fac4 | David Gibson | |
674 | d601fac4 | David Gibson | if (other) {
|
675 | d601fac4 | David Gibson | fprintf(stderr, "vio: %s and %s devices conflict at address %#x\n",
|
676 | d601fac4 | David Gibson | object_get_typename(OBJECT(qdev)), |
677 | d601fac4 | David Gibson | object_get_typename(OBJECT(&other->qdev)), |
678 | d601fac4 | David Gibson | dev->reg); |
679 | d601fac4 | David Gibson | return -1; |
680 | d601fac4 | David Gibson | } |
681 | d601fac4 | David Gibson | } else {
|
682 | d601fac4 | David Gibson | /* Need to assign an address */
|
683 | d601fac4 | David Gibson | VIOsPAPRBus *bus = DO_UPCAST(VIOsPAPRBus, bus, dev->qdev.parent_bus); |
684 | d601fac4 | David Gibson | |
685 | d601fac4 | David Gibson | do {
|
686 | d601fac4 | David Gibson | dev->reg = bus->next_reg++; |
687 | d601fac4 | David Gibson | } while (reg_conflict(dev));
|
688 | 9fc380d3 | Michael Ellerman | } |
689 | 4040ab72 | David Gibson | |
690 | 1e34d859 | Michael Ellerman | /* Don't overwrite ids assigned on the command line */
|
691 | 1e34d859 | Michael Ellerman | if (!dev->qdev.id) {
|
692 | 1e34d859 | Michael Ellerman | id = vio_format_dev_name(dev); |
693 | 1e34d859 | Michael Ellerman | if (!id) {
|
694 | 1e34d859 | Michael Ellerman | return -1; |
695 | 1e34d859 | Michael Ellerman | } |
696 | 1e34d859 | Michael Ellerman | dev->qdev.id = id; |
697 | 4040ab72 | David Gibson | } |
698 | 4040ab72 | David Gibson | |
699 | d07fee7e | David Gibson | dev->qirq = spapr_allocate_msi(dev->vio_irq_num, &dev->vio_irq_num); |
700 | e6c866d4 | David Gibson | if (!dev->qirq) {
|
701 | e6c866d4 | David Gibson | return -1; |
702 | 416343b1 | Paolo Bonzini | } |
703 | 4040ab72 | David Gibson | |
704 | ee86dfee | David Gibson | rtce_init(dev); |
705 | ee86dfee | David Gibson | |
706 | 3954d33a | Anthony Liguori | return pc->init(dev);
|
707 | 4040ab72 | David Gibson | } |
708 | 4040ab72 | David Gibson | |
709 | e2684c0b | Andreas Färber | static target_ulong h_vio_signal(CPUPPCState *env, sPAPREnvironment *spapr,
|
710 | 00dc738d | David Gibson | target_ulong opcode, |
711 | 00dc738d | David Gibson | target_ulong *args) |
712 | 00dc738d | David Gibson | { |
713 | 00dc738d | David Gibson | target_ulong reg = args[0];
|
714 | 00dc738d | David Gibson | target_ulong mode = args[1];
|
715 | 00dc738d | David Gibson | VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
716 | 3954d33a | Anthony Liguori | VIOsPAPRDeviceClass *pc; |
717 | 00dc738d | David Gibson | |
718 | 00dc738d | David Gibson | if (!dev) {
|
719 | 00dc738d | David Gibson | return H_PARAMETER;
|
720 | 00dc738d | David Gibson | } |
721 | 00dc738d | David Gibson | |
722 | 3954d33a | Anthony Liguori | pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
723 | 00dc738d | David Gibson | |
724 | 3954d33a | Anthony Liguori | if (mode & ~pc->signal_mask) {
|
725 | 00dc738d | David Gibson | return H_PARAMETER;
|
726 | 00dc738d | David Gibson | } |
727 | 00dc738d | David Gibson | |
728 | 00dc738d | David Gibson | dev->signal_state = mode; |
729 | 00dc738d | David Gibson | |
730 | 00dc738d | David Gibson | return H_SUCCESS;
|
731 | 00dc738d | David Gibson | } |
732 | 00dc738d | David Gibson | |
733 | 4040ab72 | David Gibson | VIOsPAPRBus *spapr_vio_bus_init(void)
|
734 | 4040ab72 | David Gibson | { |
735 | 4040ab72 | David Gibson | VIOsPAPRBus *bus; |
736 | 4040ab72 | David Gibson | BusState *qbus; |
737 | 4040ab72 | David Gibson | DeviceState *dev; |
738 | 4040ab72 | David Gibson | |
739 | 4040ab72 | David Gibson | /* Create bridge device */
|
740 | 4040ab72 | David Gibson | dev = qdev_create(NULL, "spapr-vio-bridge"); |
741 | 4040ab72 | David Gibson | qdev_init_nofail(dev); |
742 | 4040ab72 | David Gibson | |
743 | 4040ab72 | David Gibson | /* Create bus on bridge device */
|
744 | 4040ab72 | David Gibson | |
745 | 4040ab72 | David Gibson | qbus = qbus_create(&spapr_vio_bus_info, dev, "spapr-vio");
|
746 | 4040ab72 | David Gibson | bus = DO_UPCAST(VIOsPAPRBus, bus, qbus); |
747 | d601fac4 | David Gibson | bus->next_reg = 0x1000;
|
748 | 4040ab72 | David Gibson | |
749 | 00dc738d | David Gibson | /* hcall-vio */
|
750 | 00dc738d | David Gibson | spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); |
751 | 00dc738d | David Gibson | |
752 | ee86dfee | David Gibson | /* hcall-tce */
|
753 | ee86dfee | David Gibson | spapr_register_hypercall(H_PUT_TCE, h_put_tce); |
754 | ee86dfee | David Gibson | |
755 | b45d63b6 | Ben Herrenschmidt | /* hcall-crq */
|
756 | b45d63b6 | Ben Herrenschmidt | spapr_register_hypercall(H_REG_CRQ, h_reg_crq); |
757 | b45d63b6 | Ben Herrenschmidt | spapr_register_hypercall(H_FREE_CRQ, h_free_crq); |
758 | b45d63b6 | Ben Herrenschmidt | spapr_register_hypercall(H_SEND_CRQ, h_send_crq); |
759 | b45d63b6 | Ben Herrenschmidt | spapr_register_hypercall(H_ENABLE_CRQ, h_enable_crq); |
760 | b45d63b6 | Ben Herrenschmidt | |
761 | 08942ac1 | Ben Herrenschmidt | /* RTAS calls */
|
762 | 08942ac1 | Ben Herrenschmidt | spapr_rtas_register("ibm,set-tce-bypass", rtas_set_tce_bypass);
|
763 | 08942ac1 | Ben Herrenschmidt | spapr_rtas_register("quiesce", rtas_quiesce);
|
764 | 08942ac1 | Ben Herrenschmidt | |
765 | 4040ab72 | David Gibson | return bus;
|
766 | 4040ab72 | David Gibson | } |
767 | 4040ab72 | David Gibson | |
768 | 4040ab72 | David Gibson | /* Represents sPAPR hcall VIO devices */
|
769 | 4040ab72 | David Gibson | |
770 | 4040ab72 | David Gibson | static int spapr_vio_bridge_init(SysBusDevice *dev) |
771 | 4040ab72 | David Gibson | { |
772 | 4040ab72 | David Gibson | /* nothing */
|
773 | 4040ab72 | David Gibson | return 0; |
774 | 4040ab72 | David Gibson | } |
775 | 4040ab72 | David Gibson | |
776 | 999e12bb | Anthony Liguori | static void spapr_vio_bridge_class_init(ObjectClass *klass, void *data) |
777 | 999e12bb | Anthony Liguori | { |
778 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
779 | 39bffca2 | Anthony Liguori | SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
780 | 999e12bb | Anthony Liguori | |
781 | 39bffca2 | Anthony Liguori | k->init = spapr_vio_bridge_init; |
782 | 39bffca2 | Anthony Liguori | dc->no_user = 1;
|
783 | 999e12bb | Anthony Liguori | } |
784 | 999e12bb | Anthony Liguori | |
785 | 39bffca2 | Anthony Liguori | static TypeInfo spapr_vio_bridge_info = {
|
786 | 39bffca2 | Anthony Liguori | .name = "spapr-vio-bridge",
|
787 | 39bffca2 | Anthony Liguori | .parent = TYPE_SYS_BUS_DEVICE, |
788 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(SysBusDevice),
|
789 | 39bffca2 | Anthony Liguori | .class_init = spapr_vio_bridge_class_init, |
790 | 4040ab72 | David Gibson | }; |
791 | 4040ab72 | David Gibson | |
792 | 39bffca2 | Anthony Liguori | static void vio_spapr_device_class_init(ObjectClass *klass, void *data) |
793 | 39bffca2 | Anthony Liguori | { |
794 | 39bffca2 | Anthony Liguori | DeviceClass *k = DEVICE_CLASS(klass); |
795 | 39bffca2 | Anthony Liguori | k->init = spapr_vio_busdev_init; |
796 | b1c7f725 | David Gibson | k->reset = spapr_vio_busdev_reset; |
797 | 39bffca2 | Anthony Liguori | k->bus_info = &spapr_vio_bus_info; |
798 | 39bffca2 | Anthony Liguori | } |
799 | 39bffca2 | Anthony Liguori | |
800 | 3954d33a | Anthony Liguori | static TypeInfo spapr_vio_type_info = {
|
801 | 3954d33a | Anthony Liguori | .name = TYPE_VIO_SPAPR_DEVICE, |
802 | 3954d33a | Anthony Liguori | .parent = TYPE_DEVICE, |
803 | 3954d33a | Anthony Liguori | .instance_size = sizeof(VIOsPAPRDevice),
|
804 | 3954d33a | Anthony Liguori | .abstract = true,
|
805 | 3954d33a | Anthony Liguori | .class_size = sizeof(VIOsPAPRDeviceClass),
|
806 | 39bffca2 | Anthony Liguori | .class_init = vio_spapr_device_class_init, |
807 | 3954d33a | Anthony Liguori | }; |
808 | 3954d33a | Anthony Liguori | |
809 | 83f7d43a | Andreas Färber | static void spapr_vio_register_types(void) |
810 | 4040ab72 | David Gibson | { |
811 | 39bffca2 | Anthony Liguori | type_register_static(&spapr_vio_bridge_info); |
812 | 3954d33a | Anthony Liguori | type_register_static(&spapr_vio_type_info); |
813 | 4040ab72 | David Gibson | } |
814 | 4040ab72 | David Gibson | |
815 | 83f7d43a | Andreas Färber | type_init(spapr_vio_register_types) |
816 | 4040ab72 | David Gibson | |
817 | 4040ab72 | David Gibson | #ifdef CONFIG_FDT
|
818 | 05c19438 | David Gibson | static int compare_reg(const void *p1, const void *p2) |
819 | 05c19438 | David Gibson | { |
820 | 05c19438 | David Gibson | VIOsPAPRDevice const *dev1, *dev2;
|
821 | 05c19438 | David Gibson | |
822 | 05c19438 | David Gibson | dev1 = (VIOsPAPRDevice *)*(DeviceState **)p1; |
823 | 05c19438 | David Gibson | dev2 = (VIOsPAPRDevice *)*(DeviceState **)p2; |
824 | 05c19438 | David Gibson | |
825 | 05c19438 | David Gibson | if (dev1->reg < dev2->reg) {
|
826 | 05c19438 | David Gibson | return -1; |
827 | 05c19438 | David Gibson | } |
828 | 05c19438 | David Gibson | if (dev1->reg == dev2->reg) {
|
829 | 05c19438 | David Gibson | return 0; |
830 | 05c19438 | David Gibson | } |
831 | 05c19438 | David Gibson | |
832 | 05c19438 | David Gibson | /* dev1->reg > dev2->reg */
|
833 | 05c19438 | David Gibson | return 1; |
834 | 05c19438 | David Gibson | } |
835 | 05c19438 | David Gibson | |
836 | 4040ab72 | David Gibson | int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt) |
837 | 4040ab72 | David Gibson | { |
838 | 05c19438 | David Gibson | DeviceState *qdev, **qdevs; |
839 | 05c19438 | David Gibson | int i, num, ret = 0; |
840 | 4040ab72 | David Gibson | |
841 | 05c19438 | David Gibson | /* Count qdevs on the bus list */
|
842 | 05c19438 | David Gibson | num = 0;
|
843 | d8bb00d6 | Paolo Bonzini | QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
844 | 05c19438 | David Gibson | num++; |
845 | 05c19438 | David Gibson | } |
846 | 05c19438 | David Gibson | |
847 | 05c19438 | David Gibson | /* Copy out into an array of pointers */
|
848 | 05c19438 | David Gibson | qdevs = g_malloc(sizeof(qdev) * num);
|
849 | 05c19438 | David Gibson | num = 0;
|
850 | 05c19438 | David Gibson | QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
851 | 05c19438 | David Gibson | qdevs[num++] = qdev; |
852 | 05c19438 | David Gibson | } |
853 | 05c19438 | David Gibson | |
854 | 05c19438 | David Gibson | /* Sort the array */
|
855 | 05c19438 | David Gibson | qsort(qdevs, num, sizeof(qdev), compare_reg);
|
856 | 05c19438 | David Gibson | |
857 | 05c19438 | David Gibson | /* Hack alert. Give the devices to libfdt in reverse order, we happen
|
858 | 05c19438 | David Gibson | * to know that will mean they are in forward order in the tree. */
|
859 | 05c19438 | David Gibson | for (i = num - 1; i >= 0; i--) { |
860 | 05c19438 | David Gibson | VIOsPAPRDevice *dev = (VIOsPAPRDevice *)(qdevs[i]); |
861 | 4040ab72 | David Gibson | |
862 | 4040ab72 | David Gibson | ret = vio_make_devnode(dev, fdt); |
863 | 4040ab72 | David Gibson | |
864 | 4040ab72 | David Gibson | if (ret < 0) { |
865 | 05c19438 | David Gibson | goto out;
|
866 | 4040ab72 | David Gibson | } |
867 | 4040ab72 | David Gibson | } |
868 | 4040ab72 | David Gibson | |
869 | 05c19438 | David Gibson | ret = 0;
|
870 | 05c19438 | David Gibson | out:
|
871 | 05c19438 | David Gibson | free(qdevs); |
872 | 05c19438 | David Gibson | |
873 | 05c19438 | David Gibson | return ret;
|
874 | 4040ab72 | David Gibson | } |
875 | 68f3a94c | David Gibson | |
876 | 68f3a94c | David Gibson | int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus) |
877 | 68f3a94c | David Gibson | { |
878 | 68f3a94c | David Gibson | VIOsPAPRDevice *dev; |
879 | 68f3a94c | David Gibson | char *name, *path;
|
880 | 68f3a94c | David Gibson | int ret, offset;
|
881 | 68f3a94c | David Gibson | |
882 | 68f3a94c | David Gibson | dev = spapr_vty_get_default(bus); |
883 | 68f3a94c | David Gibson | if (!dev)
|
884 | 68f3a94c | David Gibson | return 0; |
885 | 68f3a94c | David Gibson | |
886 | 68f3a94c | David Gibson | offset = fdt_path_offset(fdt, "/chosen");
|
887 | 68f3a94c | David Gibson | if (offset < 0) { |
888 | 68f3a94c | David Gibson | return offset;
|
889 | 68f3a94c | David Gibson | } |
890 | 68f3a94c | David Gibson | |
891 | 68f3a94c | David Gibson | name = vio_format_dev_name(dev); |
892 | 68f3a94c | David Gibson | if (!name) {
|
893 | 68f3a94c | David Gibson | return -ENOMEM;
|
894 | 68f3a94c | David Gibson | } |
895 | 68f3a94c | David Gibson | |
896 | 68f3a94c | David Gibson | if (asprintf(&path, "/vdevice/%s", name) < 0) { |
897 | 68f3a94c | David Gibson | path = NULL;
|
898 | 68f3a94c | David Gibson | ret = -ENOMEM; |
899 | 68f3a94c | David Gibson | goto out;
|
900 | 68f3a94c | David Gibson | } |
901 | 68f3a94c | David Gibson | |
902 | 68f3a94c | David Gibson | ret = fdt_setprop_string(fdt, offset, "linux,stdout-path", path);
|
903 | 68f3a94c | David Gibson | out:
|
904 | 68f3a94c | David Gibson | free(name); |
905 | 68f3a94c | David Gibson | free(path); |
906 | 68f3a94c | David Gibson | |
907 | 68f3a94c | David Gibson | return ret;
|
908 | 68f3a94c | David Gibson | } |
909 | 4040ab72 | David Gibson | #endif /* CONFIG_FDT */ |