1 // Copyright 2018 The Fuchsia Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #pragma once
6
7 #include <ddk/io-buffer.h>
8 #include <ddk/mmio-buffer.h>
9 #include <ddk/protocol/platform/device.h>
10 #include <zircon/compiler.h>
11 #include <zircon/types.h>
12
13 __BEGIN_CDECLS;
14
15
pdev_map_mmio2(const pdev_protocol_t * pdev,uint32_t index,uint32_t cache_policy,void ** out_vaddr,size_t * out_size,zx_paddr_t * out_paddr,zx_handle_t * out_handle)16 static inline zx_status_t pdev_map_mmio2(const pdev_protocol_t* pdev, uint32_t index,
17 uint32_t cache_policy, void** out_vaddr, size_t* out_size,
18 zx_paddr_t* out_paddr, zx_handle_t* out_handle) {
19 return pdev->ops->map_mmio(pdev->ctx, index, cache_policy, out_vaddr, out_size, out_paddr,
20 out_handle);
21 }
22
23 // Returns an interrupt handle. "index" is relative to the list of IRQs for the device.
pdev_map_interrupt(const pdev_protocol_t * pdev,uint32_t index,zx_handle_t * out_handle)24 static inline zx_status_t pdev_map_interrupt(const pdev_protocol_t* pdev, uint32_t index,
25 zx_handle_t* out_handle) {
26 return pdev->ops->get_interrupt(pdev->ctx, index, 0, out_handle);
27 }
28
29 // MMIO mapping helper.
pdev_map_mmio_buffer(const pdev_protocol_t * pdev,uint32_t index,uint32_t cache_policy,io_buffer_t * buffer)30 static inline zx_status_t pdev_map_mmio_buffer(const pdev_protocol_t* pdev,
31 uint32_t index, uint32_t cache_policy,
32 io_buffer_t* buffer) {
33 void* vaddr;
34 size_t size;
35 zx_paddr_t paddr;
36 zx_handle_t vmo_handle;
37
38 zx_status_t status = pdev_map_mmio2(pdev, index, cache_policy, &vaddr, &size, &paddr,
39 &vmo_handle);
40 if (status != ZX_OK) {
41 return status;
42 }
43 zx_off_t offset = (uintptr_t)vaddr & (PAGE_SIZE - 1);
44 vaddr = (void *)((uintptr_t)vaddr - offset);
45 status = io_buffer_init_mmio(buffer, vmo_handle, vaddr, offset, size);
46 if (status == ZX_OK) {
47 buffer->phys = paddr;
48 }
49 zx_handle_close(vmo_handle);
50 return status;
51 }
52
pdev_map_mmio_buffer2(const pdev_protocol_t * pdev,uint32_t index,uint32_t cache_policy,mmio_buffer_t * buffer)53 static inline zx_status_t pdev_map_mmio_buffer2(const pdev_protocol_t* pdev,
54 uint32_t index, uint32_t cache_policy,
55 mmio_buffer_t* buffer) {
56 pdev_mmio_t mmio;
57
58 zx_status_t status = pdev_get_mmio(pdev, index, &mmio);
59 if (status != ZX_OK) {
60 return status;
61 }
62 return mmio_buffer_init(buffer, mmio.offset, mmio.size, mmio.vmo, cache_policy);
63 }
64
65 __END_CDECLS;
66