| Vikram Kanigiri | fbb1301 | 2016-02-15 11:54:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <arch.h> |
| 32 | #include <cci.h> |
| 33 | #include <plat_arm.h> |
| 34 | #include <platform_def.h> |
| 35 | |
| 36 | static const int cci_map[] = { |
| 37 | PLAT_ARM_CCI_CLUSTER0_SL_IFACE_IX, |
| 38 | PLAT_ARM_CCI_CLUSTER1_SL_IFACE_IX |
| 39 | }; |
| 40 | |
| 41 | /****************************************************************************** |
| 42 | * The following functions are defined as weak to allow a platform to override |
| 43 | * the way ARM CCI driver is initialised and used. |
| 44 | *****************************************************************************/ |
| 45 | #pragma weak plat_arm_interconnect_init |
| 46 | #pragma weak plat_arm_interconnect_enter_coherency |
| 47 | #pragma weak plat_arm_interconnect_exit_coherency |
| 48 | |
| 49 | |
| 50 | /****************************************************************************** |
| 51 | * Helper function to initialize ARM CCI driver. |
| 52 | *****************************************************************************/ |
| 53 | void plat_arm_interconnect_init(void) |
| 54 | { |
| 55 | cci_init(PLAT_ARM_CCI_BASE, cci_map, ARRAY_SIZE(cci_map)); |
| 56 | } |
| 57 | |
| 58 | /****************************************************************************** |
| 59 | * Helper function to place current master into coherency |
| 60 | *****************************************************************************/ |
| 61 | void plat_arm_interconnect_enter_coherency(void) |
| 62 | { |
| 63 | cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); |
| 64 | } |
| 65 | |
| 66 | /****************************************************************************** |
| 67 | * Helper function to remove current master from coherency |
| 68 | *****************************************************************************/ |
| 69 | void plat_arm_interconnect_exit_coherency(void) |
| 70 | { |
| 71 | cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); |
| 72 | } |