[PATCH 3/4] habanalabs: expose server type in INFO IOCTL

Oded Gabbay
2021-07-19T16:17:21Z

Add the server type property to the hl_info_hw_ip_info structure
that is exposed to the user via the INFO IOCTL.

This is needed by the userspace s/w stack to know the connections map
of the internal links that connect the ASIC among themselves inside the
server.

The F/W will tell us, as part of the NIC information, the server type
that the GAUDI is located in.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
drivers/misc/habanalabs/common/firmware_if.c | 2 +-
drivers/misc/habanalabs/common/habanalabs.h | 3 ++
.../misc/habanalabs/common/habanalabs_ioctl.c | 2 +
drivers/misc/habanalabs/gaudi/gaudi.c | 2 +
drivers/misc/habanalabs/goya/goya.c | 2 +
.../misc/habanalabs/include/common/cpucp_if.h | 11 +++++
include/uapi/misc/habanalabs.h | 49 +++++++++++++++++--
7 files changed, 66 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/habanalabs/common/firmware_if.c b/drivers/misc/habanalabs/common/firmware_if.c
index 869c6057ae31..0be3f5414f0b 100644
--- a/drivers/misc/habanalabs/common/firmware_if.c
+++ b/drivers/misc/habanalabs/common/firmware_if.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0

/*
- * Copyright 2016-2019 HabanaLabs, Ltd.
+ * Copyright 2016-2021 HabanaLabs, Ltd.
* All Rights Reserved.
*/

diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
index 1ea8e70a5a34..6fc2234576de 100644
--- a/drivers/misc/habanalabs/common/habanalabs.h
+++ b/drivers/misc/habanalabs/common/habanalabs.h
@@ -489,6 +489,8 @@ struct hl_hints_range {
* reserved for the user
* @first_available_cq: first available CQ for the user.
* @user_interrupt_count: number of user interrupts.
+ * @server_type: Server type that the ASIC is currently installed in.
+ * The value is according to enum hl_server_type in uapi file.
* @tpc_enabled_mask: which TPCs are enabled.
* @completion_queues_count: number of completion queues.
* @fw_security_enabled: true if security measures are enabled in firmware,
@@ -570,6 +572,7 @@ struct asic_fixed_properties {
u16 first_available_user_msix_interrupt;
u16 first_available_cq[HL_MAX_DCORES];
u16 user_interrupt_count;
+ u16 server_type;
u8 tpc_enabled_mask;
u8 completion_queues_count;
u8 fw_security_enabled;
diff --git a/drivers/misc/habanalabs/common/habanalabs_ioctl.c b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
index f4dda7b4acdd..86c3257d9ae1 100644
--- a/drivers/misc/habanalabs/common/habanalabs_ioctl.c
+++ b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
@@ -94,6 +94,8 @@ static int hw_ip_info(struct hl_device *hdev, struct hl_info_args *args)

hw_ip.first_available_interrupt_id =
prop->first_available_user_msix_interrupt;
+ hw_ip.server_type = prop->server_type;
+
return copy_to_user(out, &hw_ip,
min((size_t) size, sizeof(hw_ip))) ? -EFAULT : 0;
}
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index f134cd7a6798..4bb9970db46a 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -645,6 +645,8 @@ static int gaudi_set_fixed_properties(struct hl_device *hdev)
prop->hard_reset_done_by_fw = false;
prop->gic_interrupts_enable = true;

+ prop->server_type = HL_SERVER_TYPE_UNKNOWN;
+
return 0;
}

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index c070cd14753e..8d890c7cce08 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -469,6 +469,8 @@ int goya_set_fixed_properties(struct hl_device *hdev)
prop->hard_reset_done_by_fw = false;
prop->gic_interrupts_enable = true;

+ prop->server_type = HL_SERVER_TYPE_UNKNOWN;
+
return 0;
}

diff --git a/drivers/misc/habanalabs/include/common/cpucp_if.h b/drivers/misc/habanalabs/include/common/cpucp_if.h
index 80b1d5a9d9f1..2d6f8ea35375 100644
--- a/drivers/misc/habanalabs/include/common/cpucp_if.h
+++ b/drivers/misc/habanalabs/include/common/cpucp_if.h
@@ -700,6 +700,15 @@ struct cpucp_mac_addr {
__u8 mac_addr[ETH_ALEN];
};

+enum cpucp_serdes_type {
+ TYPE_1_SERDES_TYPE,
+ TYPE_2_SERDES_TYPE,
+ HLS1_SERDES_TYPE,
+ HLS1H_SERDES_TYPE,
+ UNKNOWN_SERDES_TYPE,
+ MAX_NUM_SERDES_TYPE = UNKNOWN_SERDES_TYPE
+};
+
struct cpucp_nic_info {
struct cpucp_mac_addr mac_addrs[CPUCP_MAX_NICS];
__le64 link_mask[CPUCP_NIC_MASK_ARR_LEN];
@@ -708,6 +717,8 @@ struct cpucp_nic_info {
__le64 link_ext_mask[CPUCP_NIC_MASK_ARR_LEN];
__u8 qsfp_eeprom[CPUCP_NIC_QSFP_EEPROM_MAX_LEN];
__le64 auto_neg_mask[CPUCP_NIC_MASK_ARR_LEN];
+ __le16 serdes_type; /* enum cpucp_serdes_type */
+ __u8 reserved[6];
};

#endif /* CPUCP_IF_H */
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index eca86c545916..b877a5b7ee74 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -279,6 +279,14 @@ enum hl_device_status {
HL_DEVICE_STATUS_NEEDS_RESET
};

+enum hl_server_type {
+ HL_SERVER_TYPE_UNKNOWN = 0,
+ HL_SERVER_GAUDI_HLS1 = 1,
+ HL_SERVER_GAUDI_HLS1H = 2,
+ HL_SERVER_GAUDI_TYPE1 = 3,
+ HL_SERVER_GAUDI_TYPE2 = 4
+};
+
/* Opcode for management ioctl
*
* HW_IP_INFO - Receive information about different IP blocks in the
@@ -337,17 +345,50 @@ enum hl_device_status {
#define HL_INFO_VERSION_MAX_LEN 128
#define HL_INFO_CARD_NAME_MAX_LEN 16

+/**
+ * struct hl_info_hw_ip_info - hardware information on various IPs in the ASIC
+ * @sram_base_address: The first SRAM physical base address that is free to be
+ * used by the user.
+ * @dram_base_address: The first DRAM virtual or physical base address that is
+ * free to be used by the user.
+ * @dram_size: The DRAM size that is available to the user.
+ * @sram_size: The SRAM size that is available to the user.
+ * @num_of_events: The number of events that can be received from the f/w. This
+ * is needed so the user can what is the size of the h/w events
+ * array he needs to pass to the kernel when he wants to fetch
+ * the event counters.
+ * @device_id: PCI device ID of the ASIC.
+ * @module_id: Module ID of the ASIC for mezzanine cards in servers
+ * (From OCP spec).
+ * @first_available_interrupt_id: The first available interrupt ID for the user
+ * to be used when it works with user interrupts.
+ * Relevant for Gaudi2 and later.
+ * @server_type: Server type that the Gaudi ASIC is currently installed in.
+ * The value is according to enum hl_server_type
+ * @cpld_version: CPLD version on the board.
+ * @psoc_pci_pll_nr: PCI PLL NR value. Needed by the profiler in some ASICs.
+ * @psoc_pci_pll_nf: PCI PLL NF value. Needed by the profiler in some ASICs.
+ * @psoc_pci_pll_od: PCI PLL OD value. Needed by the profiler in some ASICs.
+ * @psoc_pci_pll_div_factor: PCI PLL DIV factor value. Needed by the profiler
+ * in some ASICs.
+ * @tpc_enabled_mask: Bit-mask that represents which TPCs are enabled. Relevant
+ * for Goya/Gaudi only.
+ * @dram_enabled: Whether the DRAM is enabled.
+ * @cpucp_version: The CPUCP f/w version.
+ * @card_name: The card name as passed by the f/w.
+ * @dram_page_size: The DRAM physical page size.
+ */
struct hl_info_hw_ip_info {
__u64 sram_base_address;
__u64 dram_base_address;
__u64 dram_size;
__u32 sram_size;
__u32 num_of_events;
- __u32 device_id; /* PCI Device ID */
- __u32 module_id; /* For mezzanine cards in servers (From OCP spec.) */
+ __u32 device_id;
+ __u32 module_id;
__u32 reserved;
__u16 first_available_interrupt_id;
- __u16 reserved2;
+ __u16 server_type;
__u32 cpld_version;
__u32 psoc_pci_pll_nr;
__u32 psoc_pci_pll_nf;
@@ -358,7 +399,7 @@ struct hl_info_hw_ip_info {
__u8 pad[2];
__u8 cpucp_version[HL_INFO_VERSION_MAX_LEN];
__u8 card_name[HL_INFO_CARD_NAME_MAX_LEN];
- __u64 reserved3;
+ __u64 reserved2;
__u64 dram_page_size;
};

--
2.25.1