diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-06 20:12:03 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-06 20:12:03 -0500 |
commit | 1197ab2942f920f261952de0c392ac749a35796b (patch) | |
tree | 4922ccc8a6061e5ece6ac7420001f3bf4524ea92 /Documentation/devicetree | |
parent | ec773e99ab4abce07b1ae23117179c2861831964 (diff) | |
parent | 96cc017c5b7ec095ef047d3c1952b6b6bbf98943 (diff) |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (106 commits)
powerpc/p3060qds: Add support for P3060QDS board
powerpc/83xx: Add shutdown request support to MCU handling on MPC8349 MITX
powerpc/85xx: Make kexec to interate over online cpus
powerpc/fsl_booke: Fix comment in head_fsl_booke.S
powerpc/85xx: issue 15 EOI after core reset for FSL CoreNet devices
powerpc/8xxx: Fix interrupt handling in MPC8xxx GPIO driver
powerpc/85xx: Add 'fsl,pq3-gpio' compatiable for GPIO driver
powerpc/86xx: Correct Gianfar support for GE boards
powerpc/cpm: Clear muram before it is in use.
drivers/virt: add ioctl for 32-bit compat on 64-bit to fsl-hv-manager
powerpc/fsl_msi: add support for "msi-address-64" property
powerpc/85xx: Setup secondary cores PIR with hard SMP id
powerpc/fsl-booke: Fix settlbcam for 64-bit
powerpc/85xx: Adding DCSR node to dtsi device trees
powerpc/85xx: clean up FPGA device tree nodes for Freecsale QorIQ boards
powerpc/85xx: fix PHYS_64BIT selection for P1022DS
powerpc/fsl-booke: Fix setup_initial_memory_limit to not blindly map
powerpc: respect mem= setting for early memory limit setup
powerpc: Update corenet64_smp_defconfig
powerpc: Update mpc85xx/corenet 32-bit defconfigs
...
Fix up trivial conflicts in:
- arch/powerpc/configs/40x/hcu4_defconfig
removed stale file, edited elsewhere
- arch/powerpc/include/asm/udbg.h, arch/powerpc/kernel/udbg.c:
added opal and gelic drivers vs added ePAPR driver
- drivers/tty/serial/8250.c
moved UPIO_TSI to powerpc vs removed UPIO_DWAPB support
Diffstat (limited to 'Documentation/devicetree')
3 files changed, 455 insertions, 12 deletions
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/board.txt b/Documentation/devicetree/bindings/powerpc/fsl/board.txt index 39e941515a36..380914e965e0 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/board.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/board.txt | |||
@@ -1,3 +1,8 @@ | |||
1 | Freescale Reference Board Bindings | ||
2 | |||
3 | This document describes device tree bindings for various devices that | ||
4 | exist on some Freescale reference boards. | ||
5 | |||
1 | * Board Control and Status (BCSR) | 6 | * Board Control and Status (BCSR) |
2 | 7 | ||
3 | Required properties: | 8 | Required properties: |
@@ -12,25 +17,26 @@ Example: | |||
12 | reg = <f8000000 8000>; | 17 | reg = <f8000000 8000>; |
13 | }; | 18 | }; |
14 | 19 | ||
15 | * Freescale on board FPGA | 20 | * Freescale on-board FPGA |
16 | 21 | ||
17 | This is the memory-mapped registers for on board FPGA. | 22 | This is the memory-mapped registers for on board FPGA. |
18 | 23 | ||
19 | Required properities: | 24 | Required properities: |
20 | - compatible : should be "fsl,fpga-pixis". | 25 | - compatible: should be a board-specific string followed by a string |
21 | - reg : should contain the address and the length of the FPPGA register | 26 | indicating the type of FPGA. Example: |
22 | set. | 27 | "fsl,<board>-fpga", "fsl,fpga-pixis" |
28 | - reg: should contain the address and the length of the FPGA register set. | ||
23 | - interrupt-parent: should specify phandle for the interrupt controller. | 29 | - interrupt-parent: should specify phandle for the interrupt controller. |
24 | - interrupts : should specify event (wakeup) IRQ. | 30 | - interrupts: should specify event (wakeup) IRQ. |
25 | 31 | ||
26 | Example (MPC8610HPCD): | 32 | Example (P1022DS): |
27 | 33 | ||
28 | board-control@e8000000 { | 34 | board-control@3,0 { |
29 | compatible = "fsl,fpga-pixis"; | 35 | compatible = "fsl,p1022ds-fpga", "fsl,fpga-ngpixis"; |
30 | reg = <0xe8000000 32>; | 36 | reg = <3 0 0x30>; |
31 | interrupt-parent = <&mpic>; | 37 | interrupt-parent = <&mpic>; |
32 | interrupts = <8 8>; | 38 | interrupts = <8 8 0 0>; |
33 | }; | 39 | }; |
34 | 40 | ||
35 | * Freescale BCSR GPIO banks | 41 | * Freescale BCSR GPIO banks |
36 | 42 | ||
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dcsr.txt b/Documentation/devicetree/bindings/powerpc/fsl/dcsr.txt new file mode 100644 index 000000000000..9d54eb5a295f --- /dev/null +++ b/Documentation/devicetree/bindings/powerpc/fsl/dcsr.txt | |||
@@ -0,0 +1,395 @@ | |||
1 | =================================================================== | ||
2 | Debug Control and Status Register (DCSR) Binding | ||
3 | Copyright 2011 Freescale Semiconductor Inc. | ||
4 | |||
5 | NOTE: The bindings described in this document are preliminary and subject | ||
6 | to change. Some of the compatible strings that contain only generic names | ||
7 | may turn out to be inappropriate, or need additional properties to describe | ||
8 | the integration of the block with the rest of the chip. | ||
9 | |||
10 | ===================================================================== | ||
11 | Debug Control and Status Register Memory Map | ||
12 | |||
13 | Description | ||
14 | |||
15 | This node defines the base address and range for the | ||
16 | defined DCSR Memory Map. Child nodes will describe the individual | ||
17 | debug blocks defined within this memory space. | ||
18 | |||
19 | PROPERTIES | ||
20 | |||
21 | - compatible | ||
22 | Usage: required | ||
23 | Value type: <string> | ||
24 | Definition: Must include "fsl,dcsr" and "simple-bus". | ||
25 | The DCSR space exists in the memory-mapped bus. | ||
26 | |||
27 | - #address-cells | ||
28 | Usage: required | ||
29 | Value type: <u32> | ||
30 | Definition: A standard property. Defines the number of cells | ||
31 | or representing physical addresses in child nodes. | ||
32 | |||
33 | - #size-cells | ||
34 | Usage: required | ||
35 | Value type: <u32> | ||
36 | Definition: A standard property. Defines the number of cells | ||
37 | or representing the size of physical addresses in | ||
38 | child nodes. | ||
39 | |||
40 | - ranges | ||
41 | Usage: required | ||
42 | Value type: <prop-encoded-array> | ||
43 | Definition: A standard property. Specifies the physical address | ||
44 | range of the DCSR space. | ||
45 | |||
46 | EXAMPLE | ||
47 | dcsr: dcsr@f00000000 { | ||
48 | #address-cells = <1>; | ||
49 | #size-cells = <1>; | ||
50 | compatible = "fsl,dcsr", "simple-bus"; | ||
51 | ranges = <0x00000000 0xf 0x00000000 0x01008000>; | ||
52 | }; | ||
53 | |||
54 | ===================================================================== | ||
55 | Event Processing Unit | ||
56 | |||
57 | This node represents the region of DCSR space allocated to the EPU | ||
58 | |||
59 | PROPERTIES | ||
60 | |||
61 | - compatible | ||
62 | Usage: required | ||
63 | Value type: <string> | ||
64 | Definition: Must include "fsl,dcsr-epu" | ||
65 | |||
66 | - interrupts | ||
67 | Usage: required | ||
68 | Value type: <prop_encoded-array> | ||
69 | Definition: Specifies the interrupts generated by the EPU. | ||
70 | The value of the interrupts property consists of three | ||
71 | interrupt specifiers. The format of the specifier is defined | ||
72 | by the binding document describing the node's interrupt parent. | ||
73 | |||
74 | The EPU counters can be configured to assert the performance | ||
75 | monitor interrupt signal based on either counter overflow or value | ||
76 | match. Which counter asserted the interrupt is captured in an EPU | ||
77 | Counter Interrupt Status Register (EPCPUISR). | ||
78 | |||
79 | The EPU unit can also be configured to assert either or both of | ||
80 | two interrupt signals based on debug event sources within the SoC. | ||
81 | The interrupt signals are epu_xt_int0 and epu_xt_int1. | ||
82 | Which event source asserted the interrupt is captured in an EPU | ||
83 | Interrupt Status Register (EPISR0,EPISR1). | ||
84 | |||
85 | Interrupt numbers are lised in order (perfmon, event0, event1). | ||
86 | |||
87 | - interrupt-parent | ||
88 | Usage: required | ||
89 | Value type: <phandle> | ||
90 | Definition: A single <phandle> value that points | ||
91 | to the interrupt parent to which the child domain | ||
92 | is being mapped. Value must be "&mpic" | ||
93 | |||
94 | - reg | ||
95 | Usage: required | ||
96 | Value type: <prop-encoded-array> | ||
97 | Definition: A standard property. Specifies the physical address | ||
98 | offset and length of the DCSR space registers of the device | ||
99 | configuration block. | ||
100 | |||
101 | EXAMPLE | ||
102 | dcsr-epu@0 { | ||
103 | compatible = "fsl,dcsr-epu"; | ||
104 | interrupts = <52 2 0 0 | ||
105 | 84 2 0 0 | ||
106 | 85 2 0 0>; | ||
107 | interrupt-parent = <&mpic>; | ||
108 | reg = <0x0 0x1000>; | ||
109 | }; | ||
110 | |||
111 | ======================================================================= | ||
112 | Nexus Port Controller | ||
113 | |||
114 | This node represents the region of DCSR space allocated to the NPC | ||
115 | |||
116 | PROPERTIES | ||
117 | |||
118 | - compatible | ||
119 | Usage: required | ||
120 | Value type: <string> | ||
121 | Definition: Must include "fsl,dcsr-npc" | ||
122 | |||
123 | - reg | ||
124 | Usage: required | ||
125 | Value type: <prop-encoded-array> | ||
126 | Definition: A standard property. Specifies the physical address | ||
127 | offset and length of the DCSR space registers of the device | ||
128 | configuration block. | ||
129 | The Nexus Port controller occupies two regions in the DCSR space | ||
130 | with distinct functionality. | ||
131 | |||
132 | The first register range describes the Nexus Port Controller | ||
133 | control and status registers. | ||
134 | |||
135 | The second register range describes the Nexus Port Controller | ||
136 | internal trace buffer. The NPC trace buffer is a small memory buffer | ||
137 | which stages the nexus trace data for transmission via the Aurora port | ||
138 | or to a DDR based trace buffer. In some configurations the NPC trace | ||
139 | buffer can be the only trace buffer used. | ||
140 | |||
141 | |||
142 | EXAMPLE | ||
143 | dcsr-npc { | ||
144 | compatible = "fsl,dcsr-npc"; | ||
145 | reg = <0x1000 0x1000 0x1000000 0x8000>; | ||
146 | }; | ||
147 | |||
148 | ======================================================================= | ||
149 | Nexus Concentrator | ||
150 | |||
151 | This node represents the region of DCSR space allocated to the NXC | ||
152 | |||
153 | PROPERTIES | ||
154 | |||
155 | - compatible | ||
156 | Usage: required | ||
157 | Value type: <string> | ||
158 | Definition: Must include "fsl,dcsr-nxc" | ||
159 | |||
160 | - reg | ||
161 | Usage: required | ||
162 | Value type: <prop-encoded-array> | ||
163 | Definition: A standard property. Specifies the physical address | ||
164 | offset and length of the DCSR space registers of the device | ||
165 | configuration block. | ||
166 | |||
167 | EXAMPLE | ||
168 | dcsr-nxc@2000 { | ||
169 | compatible = "fsl,dcsr-nxc"; | ||
170 | reg = <0x2000 0x1000>; | ||
171 | }; | ||
172 | ======================================================================= | ||
173 | CoreNet Debug Controller | ||
174 | |||
175 | This node represents the region of DCSR space allocated to | ||
176 | the CoreNet Debug controller. | ||
177 | |||
178 | PROPERTIES | ||
179 | |||
180 | - compatible | ||
181 | Usage: required | ||
182 | Value type: <string> | ||
183 | Definition: Must include "fsl,dcsr-corenet" | ||
184 | |||
185 | - reg | ||
186 | Usage: required | ||
187 | Value type: <prop-encoded-array> | ||
188 | Definition: A standard property. Specifies the physical address | ||
189 | offset and length of the DCSR space registers of the device | ||
190 | configuration block. | ||
191 | The CoreNet Debug controller occupies two regions in the DCSR space | ||
192 | with distinct functionality. | ||
193 | |||
194 | The first register range describes the CoreNet Debug Controller | ||
195 | functionalty to perform transaction and transaction attribute matches. | ||
196 | |||
197 | The second register range describes the CoreNet Debug Controller | ||
198 | functionalty to trigger event notifications and debug traces. | ||
199 | |||
200 | EXAMPLE | ||
201 | dcsr-corenet { | ||
202 | compatible = "fsl,dcsr-corenet"; | ||
203 | reg = <0x8000 0x1000 0xB0000 0x1000>; | ||
204 | }; | ||
205 | |||
206 | ======================================================================= | ||
207 | Data Path Debug controller | ||
208 | |||
209 | This node represents the region of DCSR space allocated to | ||
210 | the DPAA Debug Controller. This controller controls debug configuration | ||
211 | for the QMAN and FMAN blocks. | ||
212 | |||
213 | PROPERTIES | ||
214 | |||
215 | - compatible | ||
216 | Usage: required | ||
217 | Value type: <string> | ||
218 | Definition: Must include both an identifier specific to the SoC | ||
219 | or Debug IP of the form "fsl,<soc>-dcsr-dpaa" in addition to the | ||
220 | generic compatible string "fsl,dcsr-dpaa". | ||
221 | |||
222 | - reg | ||
223 | Usage: required | ||
224 | Value type: <prop-encoded-array> | ||
225 | Definition: A standard property. Specifies the physical address | ||
226 | offset and length of the DCSR space registers of the device | ||
227 | configuration block. | ||
228 | |||
229 | EXAMPLE | ||
230 | dcsr-dpaa@9000 { | ||
231 | compatible = "fsl,p4080-dcsr-dpaa", "fsl,dcsr-dpaa"; | ||
232 | reg = <0x9000 0x1000>; | ||
233 | }; | ||
234 | |||
235 | ======================================================================= | ||
236 | OCeaN Debug controller | ||
237 | |||
238 | This node represents the region of DCSR space allocated to | ||
239 | the OCN Debug Controller. | ||
240 | |||
241 | PROPERTIES | ||
242 | |||
243 | - compatible | ||
244 | Usage: required | ||
245 | Value type: <string> | ||
246 | Definition: Must include both an identifier specific to the SoC | ||
247 | or Debug IP of the form "fsl,<soc>-dcsr-ocn" in addition to the | ||
248 | generic compatible string "fsl,dcsr-ocn". | ||
249 | |||
250 | - reg | ||
251 | Usage: required | ||
252 | Value type: <prop-encoded-array> | ||
253 | Definition: A standard property. Specifies the physical address | ||
254 | offset and length of the DCSR space registers of the device | ||
255 | configuration block. | ||
256 | |||
257 | EXAMPLE | ||
258 | dcsr-ocn@11000 { | ||
259 | compatible = "fsl,p4080-dcsr-ocn", "fsl,dcsr-ocn"; | ||
260 | reg = <0x11000 0x1000>; | ||
261 | }; | ||
262 | |||
263 | ======================================================================= | ||
264 | DDR Controller Debug controller | ||
265 | |||
266 | This node represents the region of DCSR space allocated to | ||
267 | the OCN Debug Controller. | ||
268 | |||
269 | PROPERTIES | ||
270 | |||
271 | - compatible | ||
272 | Usage: required | ||
273 | Value type: <string> | ||
274 | Definition: Must include "fsl,dcsr-ddr" | ||
275 | |||
276 | - dev-handle | ||
277 | Usage: required | ||
278 | Definition: A phandle to associate this debug node with its | ||
279 | component controller. | ||
280 | |||
281 | - reg | ||
282 | Usage: required | ||
283 | Value type: <prop-encoded-array> | ||
284 | Definition: A standard property. Specifies the physical address | ||
285 | offset and length of the DCSR space registers of the device | ||
286 | configuration block. | ||
287 | |||
288 | EXAMPLE | ||
289 | dcsr-ddr@12000 { | ||
290 | compatible = "fsl,dcsr-ddr"; | ||
291 | dev-handle = <&ddr1>; | ||
292 | reg = <0x12000 0x1000>; | ||
293 | }; | ||
294 | |||
295 | ======================================================================= | ||
296 | Nexus Aurora Link Controller | ||
297 | |||
298 | This node represents the region of DCSR space allocated to | ||
299 | the NAL Controller. | ||
300 | |||
301 | PROPERTIES | ||
302 | |||
303 | - compatible | ||
304 | Usage: required | ||
305 | Value type: <string> | ||
306 | Definition: Must include both an identifier specific to the SoC | ||
307 | or Debug IP of the form "fsl,<soc>-dcsr-nal" in addition to the | ||
308 | generic compatible string "fsl,dcsr-nal". | ||
309 | |||
310 | - reg | ||
311 | Usage: required | ||
312 | Value type: <prop-encoded-array> | ||
313 | Definition: A standard property. Specifies the physical address | ||
314 | offset and length of the DCSR space registers of the device | ||
315 | configuration block. | ||
316 | |||
317 | EXAMPLE | ||
318 | dcsr-nal@18000 { | ||
319 | compatible = "fsl,p4080-dcsr-nal", "fsl,dcsr-nal"; | ||
320 | reg = <0x18000 0x1000>; | ||
321 | }; | ||
322 | |||
323 | |||
324 | ======================================================================= | ||
325 | Run Control and Power Management | ||
326 | |||
327 | This node represents the region of DCSR space allocated to | ||
328 | the RCPM Debug Controller. This functionlity is limited to the | ||
329 | control the debug operations of the SoC and cores. | ||
330 | |||
331 | PROPERTIES | ||
332 | |||
333 | - compatible | ||
334 | Usage: required | ||
335 | Value type: <string> | ||
336 | Definition: Must include both an identifier specific to the SoC | ||
337 | or Debug IP of the form "fsl,<soc>-dcsr-rcpm" in addition to the | ||
338 | generic compatible string "fsl,dcsr-rcpm". | ||
339 | |||
340 | - reg | ||
341 | Usage: required | ||
342 | Value type: <prop-encoded-array> | ||
343 | Definition: A standard property. Specifies the physical address | ||
344 | offset and length of the DCSR space registers of the device | ||
345 | configuration block. | ||
346 | |||
347 | EXAMPLE | ||
348 | dcsr-rcpm@22000 { | ||
349 | compatible = "fsl,p4080-dcsr-rcpm", "fsl,dcsr-rcpm"; | ||
350 | reg = <0x22000 0x1000>; | ||
351 | }; | ||
352 | |||
353 | ======================================================================= | ||
354 | Core Service Bridge Proxy | ||
355 | |||
356 | This node represents the region of DCSR space allocated to | ||
357 | the Core Service Bridge Proxies. | ||
358 | There is one Core Service Bridge Proxy device for each CPU in the system. | ||
359 | This functionlity provides access to the debug operations of the CPU. | ||
360 | |||
361 | PROPERTIES | ||
362 | |||
363 | - compatible | ||
364 | Usage: required | ||
365 | Value type: <string> | ||
366 | Definition: Must include both an identifier specific to the cpu | ||
367 | of the form "fsl,dcsr-<cpu>-sb-proxy" in addition to the | ||
368 | generic compatible string "fsl,dcsr-cpu-sb-proxy". | ||
369 | |||
370 | - cpu-handle | ||
371 | Usage: required | ||
372 | Definition: A phandle to associate this debug node with its cpu. | ||
373 | |||
374 | - reg | ||
375 | Usage: required | ||
376 | Value type: <prop-encoded-array> | ||
377 | Definition: A standard property. Specifies the physical address | ||
378 | offset and length of the DCSR space registers of the device | ||
379 | configuration block. | ||
380 | |||
381 | EXAMPLE | ||
382 | dcsr-cpu-sb-proxy@40000 { | ||
383 | compatible = "fsl,dcsr-e500mc-sb-proxy", | ||
384 | "fsl,dcsr-cpu-sb-proxy"; | ||
385 | cpu-handle = <&cpu0>; | ||
386 | reg = <0x40000 0x1000>; | ||
387 | }; | ||
388 | dcsr-cpu-sb-proxy@41000 { | ||
389 | compatible = "fsl,dcsr-e500mc-sb-proxy", | ||
390 | "fsl,dcsr-cpu-sb-proxy"; | ||
391 | cpu-handle = <&cpu1>; | ||
392 | reg = <0x41000 0x1000>; | ||
393 | }; | ||
394 | |||
395 | ======================================================================= | ||
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt index 70558c3f3682..5d586e1ccaf5 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt | |||
@@ -25,6 +25,16 @@ Required properties: | |||
25 | are routed to IPIC, and for 85xx/86xx cpu the interrupts are routed | 25 | are routed to IPIC, and for 85xx/86xx cpu the interrupts are routed |
26 | to MPIC. | 26 | to MPIC. |
27 | 27 | ||
28 | Optional properties: | ||
29 | - msi-address-64: 64-bit PCI address of the MSIIR register. The MSIIR register | ||
30 | is used for MSI messaging. The address of MSIIR in PCI address space is | ||
31 | the MSI message address. | ||
32 | |||
33 | This property may be used in virtualized environments where the hypervisor | ||
34 | has created an alternate mapping for the MSIR block. See below for an | ||
35 | explanation. | ||
36 | |||
37 | |||
28 | Example: | 38 | Example: |
29 | msi@41600 { | 39 | msi@41600 { |
30 | compatible = "fsl,mpc8610-msi", "fsl,mpic-msi"; | 40 | compatible = "fsl,mpc8610-msi", "fsl,mpic-msi"; |
@@ -41,3 +51,35 @@ Example: | |||
41 | 0xe7 0>; | 51 | 0xe7 0>; |
42 | interrupt-parent = <&mpic>; | 52 | interrupt-parent = <&mpic>; |
43 | }; | 53 | }; |
54 | |||
55 | The Freescale hypervisor and msi-address-64 | ||
56 | ------------------------------------------- | ||
57 | Normally, PCI devices have access to all of CCSR via an ATMU mapping. The | ||
58 | Freescale MSI driver calculates the address of MSIIR (in the MSI register | ||
59 | block) and sets that address as the MSI message address. | ||
60 | |||
61 | In a virtualized environment, the hypervisor may need to create an IOMMU | ||
62 | mapping for MSIIR. The Freescale ePAPR hypervisor has this requirement | ||
63 | because of hardware limitations of the Peripheral Access Management Unit | ||
64 | (PAMU), which is currently the only IOMMU that the hypervisor supports. | ||
65 | The ATMU is programmed with the guest physical address, and the PAMU | ||
66 | intercepts transactions and reroutes them to the true physical address. | ||
67 | |||
68 | In the PAMU, each PCI controller is given only one primary window. The | ||
69 | PAMU restricts DMA operations so that they can only occur within a window. | ||
70 | Because PCI devices must be able to DMA to memory, the primary window must | ||
71 | be used to cover all of the guest's memory space. | ||
72 | |||
73 | PAMU primary windows can be divided into 256 subwindows, and each | ||
74 | subwindow can have its own address mapping ("guest physical" to "true | ||
75 | physical"). However, each subwindow has to have the same alignment, which | ||
76 | means they cannot be located at just any address. Because of these | ||
77 | restrictions, it is usually impossible to create a 4KB subwindow that | ||
78 | covers MSIIR where it's normally located. | ||
79 | |||
80 | Therefore, the hypervisor has to create a subwindow inside the same | ||
81 | primary window used for memory, but mapped to the MSIR block (where MSIIR | ||
82 | lives). The first subwindow after the end of guest memory is used for | ||
83 | this. The address specified in the msi-address-64 property is the PCI | ||
84 | address of MSIIR. The hypervisor configures the PAMU to map that address to | ||
85 | the true physical address of MSIIR. | ||