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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup sparc64 |
29 | /** @addtogroup sparc64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief FireHose Controller (FHC) driver. |
34 | * @brief FireHose Controller (FHC) driver. |
35 | * |
35 | * |
36 | * Note that this driver is a result of reverse engineering |
36 | * Note that this driver is a result of reverse engineering |
37 | * rather than implementation of a specification. This |
37 | * rather than implementation of a specification. This |
38 | * is due to the fact that the FHC documentation is not |
38 | * is due to the fact that the FHC documentation is not |
39 | * publicly available. |
39 | * publicly available. |
40 | */ |
40 | */ |
41 | 41 | ||
42 | #include <arch/drivers/fhc.h> |
42 | #include <arch/drivers/fhc.h> |
43 | #include <arch/mm/page.h> |
43 | #include <arch/mm/page.h> |
- | 44 | #include <mm/slab.h> |
|
44 | #include <arch/types.h> |
45 | #include <arch/types.h> |
45 | #include <typedefs.h> |
46 | #include <typedefs.h> |
46 | - | ||
- | 47 | #include <genarch/ofw/ofw_tree.h> |
|
47 | #include <genarch/kbd/z8530.h> |
48 | #include <genarch/kbd/z8530.h> |
48 | 49 | ||
49 | volatile uint32_t *fhc = NULL; |
50 | fhc_t *central_fhc = NULL; |
50 | 51 | ||
- | 52 | /** |
|
51 | #define FHC_UART_ADDR 0x1fff8808000ULL /* hardcoded for Simics simulation */ |
53 | * I suspect this must be hardcoded in the FHC. |
- | 54 | * If it is not, than we can read all IMAP registers |
|
- | 55 | * and get the complete mapping. |
|
- | 56 | */ |
|
- | 57 | #define FHC_UART_INO 0x39 |
|
52 | 58 | ||
53 | #define FHC_UART_IMAP 0x0 |
59 | #define FHC_UART_IMAP 0x0 |
54 | #define FHC_UART_ICLR 0x4 |
60 | #define FHC_UART_ICLR 0x4 |
55 | 61 | ||
- | 62 | #define UART_IMAP_REG 4 |
|
- | 63 | ||
56 | void fhc_init(void) |
64 | fhc_t *fhc_init(ofw_tree_node_t *node) |
57 | { |
65 | { |
- | 66 | fhc_t *fhc; |
|
- | 67 | ofw_tree_property_t *prop; |
|
- | 68 | ||
- | 69 | prop = ofw_tree_getprop(node, "reg"); |
|
- | 70 | ||
- | 71 | if (!prop || !prop->value) |
|
- | 72 | return NULL; |
|
- | 73 | ||
- | 74 | count_t regs = prop->size / sizeof(ofw_central_reg_t); |
|
- | 75 | if (regs + 1 < UART_IMAP_REG) |
|
- | 76 | return NULL; |
|
- | 77 | ||
- | 78 | ofw_central_reg_t *reg = &((ofw_central_reg_t *) prop->value)[UART_IMAP_REG]; |
|
- | 79 | ||
- | 80 | uintptr_t paddr; |
|
- | 81 | if (!ofw_central_apply_ranges(node->parent, reg, &paddr)) |
|
- | 82 | return NULL; |
|
- | 83 | ||
58 | fhc = (void *) hw_map(FHC_UART_ADDR, PAGE_SIZE); |
84 | fhc = (fhc_t *) malloc(sizeof(fhc_t), FRAME_ATOMIC); |
- | 85 | if (!fhc) |
|
- | 86 | return NULL; |
|
- | 87 | ||
- | 88 | fhc->uart_imap = (uint32_t *) hw_map(paddr, reg->size); |
|
- | 89 | ||
- | 90 | return fhc; |
|
- | 91 | } |
|
59 | 92 | ||
- | 93 | void fhc_enable_interrupt(fhc_t *fhc, int ino) |
|
- | 94 | { |
|
- | 95 | switch (ino) { |
|
- | 96 | case FHC_UART_INO: |
|
60 | fhc[FHC_UART_ICLR] = 0; |
97 | fhc->uart_imap[FHC_UART_ICLR] = 0x0; |
61 | fhc[FHC_UART_IMAP] = 0x80000000; |
98 | fhc->uart_imap[FHC_UART_IMAP] = 0x80000000; |
- | 99 | break; |
|
- | 100 | default: |
|
- | 101 | panic("Unexpected INO (%d)\n", ino); |
|
- | 102 | break; |
|
- | 103 | } |
|
62 | } |
104 | } |
63 | 105 | ||
64 | void fhc_uart_reset(void) |
106 | void fhc_clear_interrupt(fhc_t *fhc, int ino) |
65 | { |
107 | { |
- | 108 | ASSERT(fhc->uart_imap); |
|
- | 109 | ||
- | 110 | switch (ino) { |
|
- | 111 | case FHC_UART_INO: |
|
66 | fhc[FHC_UART_ICLR] = 0; |
112 | fhc->uart_imap[FHC_UART_ICLR] = 0; |
- | 113 | break; |
|
- | 114 | default: |
|
- | 115 | panic("Unexpected INO (%d)\n", ino); |
|
- | 116 | break; |
|
- | 117 | } |
|
67 | } |
118 | } |
68 | 119 | ||
69 | /** @} |
120 | /** @} |
70 | */ |
121 | */ |
71 | 122 |