cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 1 | /* |
| 2 | * TI OMAP L4 interconnect emulation. |
| 3 | * |
| 4 | * Copyright (C) 2007-2009 Nokia Corporation |
| 5 | * Written by Andrzej Zaborowski <andrew@openedhand.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 or |
| 10 | * (at your option) any later version of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
| 20 | #include "hw.h" |
| 21 | #include "omap.h" |
| 22 | |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 23 | struct omap_l4_s { |
Avi Kivity | f322614 | 2011-11-23 15:17:36 +0200 | [diff] [blame] | 24 | MemoryRegion *address_space; |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 25 | target_phys_addr_t base; |
| 26 | int ta_num; |
| 27 | struct omap_target_agent_s ta[0]; |
| 28 | }; |
| 29 | |
Avi Kivity | f322614 | 2011-11-23 15:17:36 +0200 | [diff] [blame] | 30 | struct omap_l4_s *omap_l4_init(MemoryRegion *address_space, |
| 31 | target_phys_addr_t base, int ta_num) |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 32 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 33 | struct omap_l4_s *bus = g_malloc0( |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 34 | sizeof(*bus) + ta_num * sizeof(*bus->ta)); |
| 35 | |
Avi Kivity | f322614 | 2011-11-23 15:17:36 +0200 | [diff] [blame] | 36 | bus->address_space = address_space; |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 37 | bus->ta_num = ta_num; |
| 38 | bus->base = base; |
| 39 | |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 40 | return bus; |
| 41 | } |
| 42 | |
Juha Riihimäki | f904920 | 2011-07-29 16:35:14 +0100 | [diff] [blame] | 43 | target_phys_addr_t omap_l4_region_base(struct omap_target_agent_s *ta, |
| 44 | int region) |
| 45 | { |
| 46 | return ta->bus->base + ta->start[region].offset; |
| 47 | } |
| 48 | |
Avi Kivity | f322614 | 2011-11-23 15:17:36 +0200 | [diff] [blame] | 49 | target_phys_addr_t omap_l4_region_size(struct omap_target_agent_s *ta, |
| 50 | int region) |
| 51 | { |
| 52 | return ta->start[region].size; |
| 53 | } |
| 54 | |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 55 | static uint64_t omap_l4ta_read(void *opaque, target_phys_addr_t addr, |
| 56 | unsigned size) |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 57 | { |
| 58 | struct omap_target_agent_s *s = (struct omap_target_agent_s *) opaque; |
| 59 | |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 60 | if (size != 2) { |
| 61 | return omap_badwidth_read16(opaque, addr); |
| 62 | } |
| 63 | |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 64 | switch (addr) { |
| 65 | case 0x00: /* COMPONENT */ |
| 66 | return s->component; |
| 67 | |
| 68 | case 0x20: /* AGENT_CONTROL */ |
| 69 | return s->control; |
| 70 | |
| 71 | case 0x28: /* AGENT_STATUS */ |
| 72 | return s->status; |
| 73 | } |
| 74 | |
| 75 | OMAP_BAD_REG(addr); |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | static void omap_l4ta_write(void *opaque, target_phys_addr_t addr, |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 80 | uint64_t value, unsigned size) |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 81 | { |
| 82 | struct omap_target_agent_s *s = (struct omap_target_agent_s *) opaque; |
| 83 | |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 84 | if (size != 4) { |
| 85 | return omap_badwidth_write32(opaque, addr, value); |
| 86 | } |
| 87 | |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 88 | switch (addr) { |
| 89 | case 0x00: /* COMPONENT */ |
| 90 | case 0x28: /* AGENT_STATUS */ |
| 91 | OMAP_RO_REG(addr); |
| 92 | break; |
| 93 | |
| 94 | case 0x20: /* AGENT_CONTROL */ |
| 95 | s->control = value & 0x01000700; |
| 96 | if (value & 1) /* OCP_RESET */ |
| 97 | s->status &= ~1; /* REQ_TIMEOUT */ |
| 98 | break; |
| 99 | |
| 100 | default: |
| 101 | OMAP_BAD_REG(addr); |
| 102 | } |
| 103 | } |
| 104 | |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 105 | static const MemoryRegionOps omap_l4ta_ops = { |
| 106 | .read = omap_l4ta_read, |
| 107 | .write = omap_l4ta_write, |
| 108 | .endianness = DEVICE_NATIVE_ENDIAN, |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 109 | }; |
| 110 | |
| 111 | struct omap_target_agent_s *omap_l4ta_get(struct omap_l4_s *bus, |
| 112 | const struct omap_l4_region_s *regions, |
| 113 | const struct omap_l4_agent_info_s *agents, |
| 114 | int cs) |
| 115 | { |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 116 | int i; |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 117 | struct omap_target_agent_s *ta = NULL; |
| 118 | const struct omap_l4_agent_info_s *info = NULL; |
| 119 | |
| 120 | for (i = 0; i < bus->ta_num; i ++) |
| 121 | if (agents[i].ta == cs) { |
| 122 | ta = &bus->ta[i]; |
| 123 | info = &agents[i]; |
| 124 | break; |
| 125 | } |
| 126 | if (!ta) { |
| 127 | fprintf(stderr, "%s: bad target agent (%i)\n", __FUNCTION__, cs); |
| 128 | exit(-1); |
| 129 | } |
| 130 | |
| 131 | ta->bus = bus; |
| 132 | ta->start = ®ions[info->region]; |
| 133 | ta->regions = info->regions; |
| 134 | |
| 135 | ta->component = ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0); |
| 136 | ta->status = 0x00000000; |
| 137 | ta->control = 0x00000200; /* XXX 01000200 for L4TAO */ |
| 138 | |
Benoît Canet | 3892f84 | 2011-11-25 15:21:36 +0100 | [diff] [blame] | 139 | memory_region_init_io(&ta->iomem, &omap_l4ta_ops, ta, "omap.l4ta", |
| 140 | omap_l4_region_size(ta, info->ta_region)); |
Avi Kivity | f44336c | 2011-11-28 15:40:49 +0200 | [diff] [blame] | 141 | omap_l4_attach(ta, info->ta_region, &ta->iomem); |
cmchao | 2c1d9ec | 2010-05-31 23:54:22 +0800 | [diff] [blame] | 142 | |
| 143 | return ta; |
| 144 | } |
| 145 | |
Avi Kivity | f44336c | 2011-11-28 15:40:49 +0200 | [diff] [blame] | 146 | target_phys_addr_t omap_l4_attach(struct omap_target_agent_s *ta, |
Avi Kivity | f322614 | 2011-11-23 15:17:36 +0200 | [diff] [blame] | 147 | int region, MemoryRegion *mr) |
| 148 | { |
| 149 | target_phys_addr_t base; |
| 150 | |
| 151 | if (region < 0 || region >= ta->regions) { |
| 152 | fprintf(stderr, "%s: bad io region (%i)\n", __FUNCTION__, region); |
| 153 | exit(-1); |
| 154 | } |
| 155 | |
| 156 | base = ta->bus->base + ta->start[region].offset; |
| 157 | if (mr) { |
| 158 | memory_region_add_subregion(ta->bus->address_space, base, mr); |
| 159 | } |
| 160 | |
| 161 | return base; |
| 162 | } |