diff options
author | Soby Mathew <soby.mathew@arm.com> | 2019-03-13 15:24:11 +0000 |
---|---|---|
committer | GitHub <noreply@github.com> | 2019-03-13 15:24:11 +0000 |
commit | eb9da9e182e0499b2c684f3829df687bee4782c8 (patch) | |
tree | 23f7b4059d48792ef798dba92d314fd75d6ad835 /drivers | |
parent | e082009e05a395094ce24104b67a5df06d5f94a8 (diff) | |
parent | cf6c30e08ba54a22a0ce8abd6eac8b1d1ccad324 (diff) |
Merge pull request #1856 from masahisak/synquacer-scmi-support
plat/synquacer: enable SCMI support
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/arm/css/scmi/scmi_private.h | 5 | ||||
-rw-r--r-- | drivers/arm/css/scmi/vendor/scmi_sq.c | 60 | ||||
-rw-r--r-- | drivers/arm/css/scmi/vendor/scmi_sq.h | 25 |
3 files changed, 90 insertions, 0 deletions
diff --git a/drivers/arm/css/scmi/scmi_private.h b/drivers/arm/css/scmi/scmi_private.h index 65305736..61437f6d 100644 --- a/drivers/arm/css/scmi/scmi_private.h +++ b/drivers/arm/css/scmi/scmi_private.h @@ -152,4 +152,9 @@ static inline void validate_scmi_channel(scmi_channel_t *ch) assert(ch->info && ch->info->scmi_mbx_mem); } +/* + * SCMI vendor specific protocol + */ +#define SCMI_SYS_VENDOR_EXT_PROTO_ID 0x80 + #endif /* SCMI_PRIVATE_H */ diff --git a/drivers/arm/css/scmi/vendor/scmi_sq.c b/drivers/arm/css/scmi/vendor/scmi_sq.c new file mode 100644 index 00000000..2ae7ca15 --- /dev/null +++ b/drivers/arm/css/scmi/vendor/scmi_sq.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> + +#include <arch_helpers.h> +#include <common/debug.h> +#include <drivers/arm/css/scmi.h> + +#include "scmi_private.h" +#include "scmi_sq.h" + +#include <sq_common.h> + +/* SCMI messge ID to get the available DRAM region */ +#define SCMI_VENDOR_EXT_MEMINFO_GET_MSG 0x3 + +/* + * API to get the available DRAM region + */ +int scmi_get_draminfo(void *p, struct draminfo *info) +{ + mailbox_mem_t *mbx_mem; + int token = 0, ret; + scmi_channel_t *ch = (scmi_channel_t *)p; + struct dram_info_resp response; + + validate_scmi_channel(ch); + + scmi_get_channel(ch); + + mbx_mem = (mailbox_mem_t *)(ch->info->scmi_mbx_mem); + mbx_mem->msg_header = SCMI_MSG_CREATE(SCMI_SYS_VENDOR_EXT_PROTO_ID, + SCMI_VENDOR_EXT_MEMINFO_GET_MSG, token); + mbx_mem->len = 8; + mbx_mem->flags = SCMI_FLAG_RESP_POLL; + + scmi_send_sync_command(ch); + + /* + * Ensure that any read to the SCPI payload area is done after reading + * the MHU register. If these 2 reads were reordered then the CPU would + * read invalid payload data + */ + dmbld(); + + /* Get the return values */ + SCMI_PAYLOAD_RET_VAL1(mbx_mem->payload, ret); + + memcpy(&response, (void *)mbx_mem->payload, sizeof(response)); + + scmi_put_channel(ch); + + *info = response.info; + + return ret; +} diff --git a/drivers/arm/css/scmi/vendor/scmi_sq.h b/drivers/arm/css/scmi/vendor/scmi_sq.h new file mode 100644 index 00000000..aee1a3a9 --- /dev/null +++ b/drivers/arm/css/scmi/vendor/scmi_sq.h @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef SCMI_SQ_H +#define SCMI_SQ_H + +#include <stddef.h> +#include <stdint.h> + +#include <sq_common.h> + +/* Structure to represent available DRAM region */ +struct dram_info_resp { + int status; + int reserved; + struct draminfo info; +}; + +/* API to get the available DRAM region */ +int scmi_get_draminfo(void *p, struct draminfo *info); + +#endif /* SCMI_SQ_H */ |