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cndm: Read config in driver

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-03-08 01:22:36 -08:00
parent 283ef97cec
commit 438c082f73
3 changed files with 243 additions and 29 deletions
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39
src/cndm/modules/cndm/cndm.h
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@@ -58,6 +58,45 @@ struct cndm_dev {
struct ptp_clock *ptp_clock;
struct ptp_clock_info ptp_clock_info;
u64 ptp_nom_period;
// config
u16 cfg_page_max;
u32 cmd_ver;
// FW ID
u32 fpga_id;
u32 fw_id;
u32 fw_ver;
u32 board_id;
u32 board_ver;
u32 build_date;
u32 git_hash;
u32 release_info;
char build_date_str[32];
// HW config
u16 sys_clk_per_ns_num;
u16 sys_clk_per_ns_den;
u16 ptp_clk_per_ns_num;
u16 ptp_clk_per_ns_den;
// Resources
u8 log_max_eq;
u8 log_max_eq_sz;
u8 eq_pool;
u8 eqe_ver;
u8 log_max_cq;
u8 log_max_cq_sz;
u8 cq_pool;
u8 cqe_ver;
u8 log_max_sq;
u8 log_max_sq_sz;
u8 sq_pool;
u8 sqe_ver;
u8 log_max_rq;
u8 log_max_rq_sz;
u8 rq_pool;
u8 rqe_ver;
};
struct cndm_tx_info {

107
src/cndm/modules/cndm/cndm_hw.h
View File

@@ -15,6 +15,8 @@ Authors:
#define CNDM_CMD_OP_NOP 0x0000
#define CNDM_CMD_OP_CFG 0x0100
#define CNDM_CMD_OP_ACCESS_REG 0x0180
#define CNDM_CMD_OP_PTP 0x0190
@@ -43,28 +45,68 @@ Authors:
#define CNDM_CMD_OP_QUERY_QP 0x0242
#define CNDM_CMD_OP_DESTROY_QP 0x0243
struct cndm_cmd_queue {
struct cndm_cmd_cfg {
__le16 rsvd;
union {
__le16 opcode;
__le16 status;
};
__le32 flags;
__le32 port;
__le32 qn;
struct {
__le16 cfg_page;
__le16 cfg_page_max;
};
__le32 cmd_ver;
__le32 qn2;
__le32 pd;
__le32 size;
__le32 dboffs;
__le32 fw_ver;
__u8 port_count;
__u8 rsvd2[3];
__le32 rsvd3[2];
__le64 ptr1;
__le64 ptr2;
__le32 dw12;
__le32 dw13;
__le32 dw14;
__le32 dw15;
union {
struct {
// Page 0: FW ID
__le32 fpga_id;
__le32 fw_id;
__le32 fw_ver;
__le32 board_id;
__le32 board_ver;
__le32 build_date;
__le32 git_hash;
__le32 release_info;
} p0;
struct {
// Page 1: HW config
__le16 port_count;
__le16 rsvd1;
__le32 rsvd2[3];
__le16 sys_clk_per_ns_den;
__le16 sys_clk_per_ns_num;
__le16 ptp_clk_per_ns_den;
__le16 ptp_clk_per_ns_num;
__le32 rsvd3[2];
} p1;
struct {
// Page 2: Resources
__u8 log_max_eq;
__u8 log_max_eq_sz;
__u8 eq_pool;
__u8 eqe_ver;
__u8 log_max_cq;
__u8 log_max_cq_sz;
__u8 cq_pool;
__u8 cqe_ver;
__u8 log_max_sq;
__u8 log_max_sq_sz;
__u8 sq_pool;
__u8 sqe_ver;
__u8 log_max_rq;
__u8 log_max_rq_sz;
__u8 rq_pool;
__u8 rqe_ver;
__le32 rsvd[4];
} p2;
};
};
#define CNDM_CMD_REG_FLG_WRITE 0x00000001
@@ -77,21 +119,11 @@ struct cndm_cmd_reg {
__le16 status;
};
__le32 flags;
__le32 dw2;
__le32 dw3;
__le32 dw4;
__le32 dw5;
__le32 dw6;
__le32 rsvd1[5];
__le32 reg_addr;
__le64 write_val;
__le64 read_val;
__le32 dw12;
__le32 dw13;
__le32 dw14;
__le32 dw15;
__le32 rsvd2[4];
};
#define CNDM_CMD_PTP_FLG_SET_TOD 0x00000001
@@ -118,6 +150,29 @@ struct cndm_cmd_ptp {
__le64 nom_period;
__le64 period;
__le32 rsvd2[2];
};
struct cndm_cmd_queue {
__le16 rsvd;
union {
__le16 opcode;
__le16 status;
};
__le32 flags;
__le32 port;
__le32 qn;
__le32 qn2;
__le32 pd;
__le32 size;
__le32 dboffs;
__le64 ptr1;
__le64 ptr2;
__le32 prod;
__le32 cons;
__le32 dw14;
__le32 dw15;
};

126
src/cndm/modules/cndm/cndm_main.c
View File

@@ -9,9 +9,9 @@ Authors:
*/
#include "cndm.h"
#include "cndm_hw.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/version.h>
MODULE_DESCRIPTION("Corundum device driver");
@@ -44,9 +44,13 @@ static int cndm_common_probe(struct cndm_dev *cdev)
{
struct devlink *devlink = priv_to_devlink(cdev);
struct device *dev = cdev->dev;
struct rtc_time tm;
int ret = 0;
int k;
struct cndm_cmd_cfg cmd;
struct cndm_cmd_cfg rsp;
mutex_init(&cdev->mbox_lock);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
@@ -55,9 +59,125 @@ static int cndm_common_probe(struct cndm_dev *cdev)
devlink_register(devlink, dev);
#endif
cdev->port_count = ioread32(cdev->hw_addr + 0x0100);
// Read config page 0
cmd.opcode = CNDM_CMD_OP_CFG;
cmd.flags = 0x00000000;
cmd.cfg_page = 0;
cndm_exec_cmd(cdev, &cmd, &rsp);
cdev->cfg_page_max = rsp.cfg_page_max;
cdev->cmd_ver = rsp.cmd_ver;
dev_info(dev, "Config pages: %d", cdev->cfg_page_max+1);
dev_info(dev, "Command version: %d.%d.%d", cdev->cmd_ver >> 20,
(cdev->cmd_ver >> 12) & 0xff,
cdev->cmd_ver & 0xfff);
// FW ID
cdev->fpga_id = rsp.p0.fpga_id;
cdev->fw_id = rsp.p0.fw_id;
cdev->fw_ver = rsp.p0.fw_ver;
cdev->board_id = rsp.p0.board_id;
cdev->board_ver = rsp.p0.board_ver;
cdev->build_date = rsp.p0.build_date;
cdev->git_hash = rsp.p0.git_hash;
cdev->release_info = rsp.p0.release_info;
rtc_time64_to_tm(cdev->build_date, &tm);
dev_info(dev, "FPGA ID: 0x%08x", cdev->fpga_id);
dev_info(dev, "FW ID: 0x%08x", cdev->fw_id);
dev_info(dev, "FW version: %d.%d.%d", cdev->fw_ver >> 20,
(cdev->fw_ver >> 12) & 0xff,
cdev->fw_ver & 0xfff);
dev_info(dev, "Board ID: 0x%08x", cdev->board_id);
dev_info(dev, "Board version: %d.%d.%d", cdev->board_ver >> 20,
(cdev->board_ver >> 12) & 0xff,
cdev->board_ver & 0xfff);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
snprintf(cdev->build_date_str, sizeof(cdev->build_date_str), "%ptRd %ptRt", &tm, &tm);
#else
snprintf(cdev->build_date_str, sizeof(cdev->build_date_str), "%04d-%02d-%02d %02d:%02d:%02d",
tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
#endif
dev_info(dev, "Build date: %s UTC (raw: 0x%08x)", cdev->build_date_str, cdev->build_date);
dev_info(dev, "Git hash: %08x", cdev->git_hash);
dev_info(dev, "Release info: %08x", cdev->release_info);
// Read config page 1
cmd.opcode = CNDM_CMD_OP_CFG;
cmd.flags = 0x00000000;
cmd.cfg_page = 1;
cndm_exec_cmd(cdev, &cmd, &rsp);
// HW config
cdev->port_count = rsp.p1.port_count;
cdev->sys_clk_per_ns_num = rsp.p1.sys_clk_per_ns_num;
cdev->sys_clk_per_ns_den = rsp.p1.sys_clk_per_ns_den;
cdev->ptp_clk_per_ns_num = rsp.p1.ptp_clk_per_ns_num;
cdev->ptp_clk_per_ns_den = rsp.p1.ptp_clk_per_ns_den;
dev_info(dev, "Port count: %d", cdev->port_count);
if (cdev->sys_clk_per_ns_num != 0) {
u64 a, b, c;
a = (u64)cdev->sys_clk_per_ns_den * 1000;
b = a / cdev->sys_clk_per_ns_num;
c = a - (b * cdev->sys_clk_per_ns_num);
c = (c * 1000000000) / cdev->sys_clk_per_ns_num;
dev_info(dev, "Sys clock freq: %lld.%09lld MHz (raw %d/%d ns)", b, c, cdev->sys_clk_per_ns_num, cdev->sys_clk_per_ns_den);
}
if (cdev->ptp_clk_per_ns_num != 0) {
u64 a, b, c;
a = (u64)cdev->ptp_clk_per_ns_den * 1000;
b = a / cdev->ptp_clk_per_ns_num;
c = a - (b * cdev->ptp_clk_per_ns_num);
c = (c * 1000000000) / cdev->ptp_clk_per_ns_num;
dev_info(dev, "PTP clock freq: %lld.%09lld MHz (raw %d/%d ns)", b, c, cdev->ptp_clk_per_ns_num, cdev->ptp_clk_per_ns_den);
}
// Read config page 2
cmd.opcode = CNDM_CMD_OP_CFG;
cmd.flags = 0x00000000;
cmd.cfg_page = 2;
cndm_exec_cmd(cdev, &cmd, &rsp);
// Resources
cdev->log_max_eq = rsp.p2.log_max_eq;
cdev->log_max_eq_sz = rsp.p2.log_max_eq_sz;
cdev->eq_pool = rsp.p2.eq_pool;
cdev->eqe_ver = rsp.p2.eqe_ver;
cdev->log_max_cq = rsp.p2.log_max_cq;
cdev->log_max_cq_sz = rsp.p2.log_max_cq_sz;
cdev->cq_pool = rsp.p2.cq_pool;
cdev->cqe_ver = rsp.p2.cqe_ver;
cdev->log_max_sq = rsp.p2.log_max_sq;
cdev->log_max_sq_sz = rsp.p2.log_max_sq_sz;
cdev->sq_pool = rsp.p2.sq_pool;
cdev->sqe_ver = rsp.p2.sqe_ver;
cdev->log_max_rq = rsp.p2.log_max_rq;
cdev->log_max_rq_sz = rsp.p2.log_max_rq_sz;
cdev->rq_pool = rsp.p2.rq_pool;
cdev->rqe_ver = rsp.p2.rqe_ver;
dev_info(dev, "Max EQ count: %d (log %d)", 1 << cdev->log_max_eq, cdev->log_max_eq);
dev_info(dev, "Max EQ size: %d (log %d)", 1 << cdev->log_max_eq_sz, cdev->log_max_eq_sz);
dev_info(dev, "EQ pool: %d", cdev->eq_pool);
dev_info(dev, "EQE version: %d", cdev->eqe_ver);
dev_info(dev, "Max CQ count: %d (log %d)", 1 << cdev->log_max_cq, cdev->log_max_cq);
dev_info(dev, "Max CQ size: %d (log %d)", 1 << cdev->log_max_cq_sz, cdev->log_max_cq_sz);
dev_info(dev, "CQ pool: %d", cdev->cq_pool);
dev_info(dev, "CQE version: %d", cdev->cqe_ver);
dev_info(dev, "Max SQ count: %d (log %d)", 1 << cdev->log_max_sq, cdev->log_max_sq);
dev_info(dev, "Max SQ size: %d (log %d)", 1 << cdev->log_max_sq_sz, cdev->log_max_sq_sz);
dev_info(dev, "SQ pool: %d", cdev->sq_pool);
dev_info(dev, "SQE version: %d", cdev->sqe_ver);
dev_info(dev, "Max RQ count: %d (log %d)", 1 << cdev->log_max_rq, cdev->log_max_rq);
dev_info(dev, "Max RQ size: %d (log %d)", 1 << cdev->log_max_rq_sz, cdev->log_max_rq_sz);
dev_info(dev, "RQ pool: %d", cdev->rq_pool);
dev_info(dev, "RQE version: %d", cdev->rqe_ver);
if (cdev->port_count > ARRAY_SIZE(cdev->ndev))
cdev->port_count = ARRAY_SIZE(cdev->ndev);