diff mbox series

[RFC,08/29] net/qdma: qdma hardware initialization

Message ID 20220706075219.517046-9-aman.kumar@vvdntech.in (mailing list archive)
State New
Delegated to: Thomas Monjalon
Headers show
Series cover letter for net/qdma PMD | expand

Checks

Context Check Description
ci/checkpatch warning coding style issues

Commit Message

Aman Kumar July 6, 2022, 7:51 a.m. UTC
add hardware initialization as per qdma_access lib.
Fetch hardware version and other details and bind to
proper qdma layer.

Signed-off-by: Aman Kumar <aman.kumar@vvdntech.in>
---
 drivers/net/qdma/qdma.h        |  13 +-
 drivers/net/qdma/qdma_common.c |  52 +++++++-
 drivers/net/qdma/qdma_ethdev.c | 225 ++++++++++++++++++++++++++++++++-
 3 files changed, 286 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/qdma/qdma.h b/drivers/net/qdma/qdma.h
index 4bc61d2a08..db59cddd25 100644
--- a/drivers/net/qdma/qdma.h
+++ b/drivers/net/qdma/qdma.h
@@ -15,6 +15,8 @@ 
 #include <rte_byteorder.h>
 #include <rte_memzone.h>
 #include <linux/pci.h>
+
+#include "qdma_resource_mgmt.h"
 #include "qdma_log.h"
 
 #define QDMA_NUM_BARS          (6)
@@ -23,6 +25,8 @@ 
 
 #define QDMA_FUNC_ID_INVALID    0xFFFF
 
+#define DEFAULT_QUEUE_BASE	(0)
+
 #define DEFAULT_TIMER_CNT_TRIG_MODE_TIMER	(5)
 
 enum dma_data_direction {
@@ -186,6 +190,9 @@  struct qdma_pci_dev {
 	 */
 	uint32_t dma_device_index;
 
+	/* Device capabilities */
+	struct qdma_dev_attributes dev_cap;
+
 	uint8_t cmpt_desc_len;
 	uint8_t c2h_bypass_mode;
 	uint8_t h2c_bypass_mode;
@@ -210,6 +217,9 @@  struct qdma_pci_dev {
 	struct queue_info *q_info;
 	uint8_t init_q_range;
 
+	/* Pointer to QDMA access layer function pointers */
+	struct qdma_hw_access *hw_access;
+
 	struct qdma_vf_info *vfinfo;
 	uint8_t vf_online_count;
 
@@ -218,8 +228,9 @@  struct qdma_pci_dev {
 };
 
 int qdma_identify_bars(struct rte_eth_dev *dev);
+int qdma_get_hw_version(struct rte_eth_dev *dev);
 
 int qdma_check_kvargs(struct rte_devargs *devargs,
 			struct qdma_pci_dev *qdma_dev);
-
+void qdma_check_errors(void *arg);
 #endif /* ifndef __QDMA_H__ */
diff --git a/drivers/net/qdma/qdma_common.c b/drivers/net/qdma/qdma_common.c
index c0c5162f0f..0ea920f255 100644
--- a/drivers/net/qdma/qdma_common.c
+++ b/drivers/net/qdma/qdma_common.c
@@ -10,6 +10,7 @@ 
 #include <rte_cycles.h>
 #include <rte_kvargs.h>
 #include "qdma.h"
+#include "qdma_access_common.h"
 
 #include <fcntl.h>
 #include <unistd.h>
@@ -199,7 +200,8 @@  int qdma_check_kvargs(struct rte_devargs *devargs,
 
 int qdma_identify_bars(struct rte_eth_dev *dev)
 {
-	int bar_len, i;
+	int bar_len, i, ret;
+	uint8_t  usr_bar;
 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 	struct qdma_pci_dev *dma_priv;
 
@@ -213,6 +215,24 @@  int qdma_identify_bars(struct rte_eth_dev *dev)
 		return -1;
 	}
 
+	/* Find AXI Master Lite(user bar) */
+	ret = dma_priv->hw_access->qdma_get_user_bar(dev,
+			dma_priv->is_vf, dma_priv->func_id, &usr_bar);
+	if (ret != QDMA_SUCCESS ||
+	    pci_dev->mem_resource[usr_bar].len == 0) {
+		if (dma_priv->ip_type == QDMA_VERSAL_HARD_IP) {
+			if (pci_dev->mem_resource[1].len == 0)
+				dma_priv->user_bar_idx = 2;
+			else
+				dma_priv->user_bar_idx = 1;
+		} else {
+			dma_priv->user_bar_idx = -1;
+			PMD_DRV_LOG(INFO, "Cannot find AXI Master Lite BAR");
+		}
+	} else {
+		dma_priv->user_bar_idx = usr_bar;
+	}
+
 	/* Find AXI Bridge Master bar(bypass bar) */
 	for (i = 0; i < QDMA_NUM_BARS; i++) {
 		bar_len = pci_dev->mem_resource[i].len;
@@ -234,3 +254,33 @@  int qdma_identify_bars(struct rte_eth_dev *dev)
 
 	return 0;
 }
+int qdma_get_hw_version(struct rte_eth_dev *dev)
+{
+	int ret;
+	struct qdma_pci_dev *dma_priv;
+	struct qdma_hw_version_info version_info;
+
+	dma_priv = (struct qdma_pci_dev *)dev->data->dev_private;
+	ret = dma_priv->hw_access->qdma_get_version(dev,
+			dma_priv->is_vf, &version_info);
+	if (ret < 0)
+		return dma_priv->hw_access->qdma_get_error_code(ret);
+
+	dma_priv->rtl_version = version_info.rtl_version;
+	dma_priv->vivado_rel = version_info.vivado_release;
+	dma_priv->device_type = version_info.device_type;
+	dma_priv->ip_type = version_info.ip_type;
+
+	PMD_DRV_LOG(INFO, "QDMA RTL VERSION : %s\n",
+		version_info.qdma_rtl_version_str);
+	PMD_DRV_LOG(INFO, "QDMA DEVICE TYPE : %s\n",
+		version_info.qdma_device_type_str);
+	PMD_DRV_LOG(INFO, "QDMA VIVADO RELEASE ID : %s\n",
+		version_info.qdma_vivado_release_id_str);
+	if (version_info.ip_type == QDMA_VERSAL_HARD_IP) {
+		PMD_DRV_LOG(INFO, "QDMA VERSAL IP TYPE : %s\n",
+			version_info.qdma_ip_type_str);
+	}
+
+	return 0;
+}
diff --git a/drivers/net/qdma/qdma_ethdev.c b/drivers/net/qdma/qdma_ethdev.c
index c2ed6a52bb..bc902e607f 100644
--- a/drivers/net/qdma/qdma_ethdev.c
+++ b/drivers/net/qdma/qdma_ethdev.c
@@ -22,11 +22,27 @@ 
 #include <rte_cycles.h>
 
 #include "qdma.h"
+#include "qdma_version.h"
+#include "qdma_access_common.h"
+#include "qdma_access_export.h"
 
+/* Poll for QDMA errors every 1 second */
+#define QDMA_ERROR_POLL_FRQ (1000000)
 #define PCI_CONFIG_BRIDGE_DEVICE	(6)
 #define PCI_CONFIG_CLASS_CODE_SHIFT	(16)
 #define MAX_PCIE_CAPABILITY		(48)
 
+static void qdma_device_attributes_get(struct rte_eth_dev *dev);
+
+/* Poll for any QDMA errors */
+void qdma_check_errors(void *arg)
+{
+	struct qdma_pci_dev *qdma_dev;
+	qdma_dev = ((struct rte_eth_dev *)arg)->data->dev_private;
+	qdma_dev->hw_access->qdma_hw_error_process(arg);
+	rte_eal_alarm_set(QDMA_ERROR_POLL_FRQ, qdma_check_errors, arg);
+}
+
 /*
  * The set of PCI devices this driver supports
  */
@@ -43,6 +59,92 @@  static struct rte_pci_id qdma_pci_id_tbl[] = {
 	{ .vendor_id = 0, /* sentinel */ },
 };
 
+static void qdma_device_attributes_get(struct rte_eth_dev *dev)
+{
+	struct qdma_pci_dev *qdma_dev;
+
+	qdma_dev = (struct qdma_pci_dev *)dev->data->dev_private;
+	qdma_dev->hw_access->qdma_get_device_attributes(dev,
+			&qdma_dev->dev_cap);
+
+	/* Check DPDK configured queues per port */
+	if (qdma_dev->dev_cap.num_qs > RTE_MAX_QUEUES_PER_PORT)
+		qdma_dev->dev_cap.num_qs = RTE_MAX_QUEUES_PER_PORT;
+
+	PMD_DRV_LOG(INFO, "qmax = %d, mm %d, st %d.\n",
+	qdma_dev->dev_cap.num_qs, qdma_dev->dev_cap.mm_en,
+	qdma_dev->dev_cap.st_en);
+}
+
+static inline uint8_t pcie_find_cap(const struct rte_pci_device *pci_dev,
+					uint8_t cap)
+{
+	uint8_t pcie_cap_pos = 0;
+	uint8_t pcie_cap_id = 0;
+	int ttl = MAX_PCIE_CAPABILITY;
+	int ret;
+
+	ret = rte_pci_read_config(pci_dev, &pcie_cap_pos, sizeof(uint8_t),
+		PCI_CAPABILITY_LIST);
+	if (ret < 0) {
+		PMD_DRV_LOG(ERR, "PCIe config space read failed..\n");
+		return 0;
+	}
+
+	while (ttl-- && pcie_cap_pos >= PCI_STD_HEADER_SIZEOF) {
+		pcie_cap_pos &= ~3;
+
+		ret = rte_pci_read_config(pci_dev,
+			&pcie_cap_id, sizeof(uint8_t),
+			(pcie_cap_pos + PCI_CAP_LIST_ID));
+		if (ret < 0) {
+			PMD_DRV_LOG(ERR, "PCIe config space read failed..\n");
+			return 0;
+		}
+
+		if (pcie_cap_id == 0xff)
+			break;
+
+		if (pcie_cap_id == cap)
+			return pcie_cap_pos;
+
+		ret = rte_pci_read_config(pci_dev,
+			&pcie_cap_pos, sizeof(uint8_t),
+			(pcie_cap_pos + PCI_CAP_LIST_NEXT));
+		if (ret < 0) {
+			PMD_DRV_LOG(ERR, "PCIe config space read failed..\n");
+			return 0;
+		}
+	}
+
+	return 0;
+}
+
+static void pcie_perf_enable(const struct rte_pci_device *pci_dev)
+{
+	uint16_t value;
+	uint8_t pcie_cap_pos = pcie_find_cap(pci_dev, PCI_CAP_ID_EXP);
+
+	if (!pcie_cap_pos)
+		return;
+
+	if (pcie_cap_pos > 0) {
+		if (rte_pci_read_config(pci_dev, &value, sizeof(uint16_t),
+					 pcie_cap_pos + PCI_EXP_DEVCTL) < 0) {
+			PMD_DRV_LOG(ERR, "PCIe config space read failed..\n");
+			return;
+		}
+
+		value |= (PCI_EXP_DEVCTL_EXT_TAG | PCI_EXP_DEVCTL_RELAX_EN);
+
+		if (rte_pci_write_config(pci_dev, &value, sizeof(uint16_t),
+					   pcie_cap_pos + PCI_EXP_DEVCTL) < 0) {
+			PMD_DRV_LOG(ERR, "PCIe config space write failed..\n");
+			return;
+		}
+	}
+}
+
 /* parse a sysfs file containing one integer value */
 static int parse_sysfs_value(const char *filename, uint32_t *val)
 {
@@ -234,7 +336,7 @@  static int qdma_eth_dev_init(struct rte_eth_dev *dev)
 {
 	struct qdma_pci_dev *dma_priv;
 	uint8_t *baseaddr;
-	int i, idx, ret;
+	int i, idx, ret, qbase;
 	struct rte_pci_device *pci_dev;
 	uint16_t num_vfs;
 	uint8_t max_pci_bus = 0;
@@ -297,8 +399,30 @@  static int qdma_eth_dev_init(struct rte_eth_dev *dev)
 			pci_dev->mem_resource[dma_priv->config_bar_idx].addr;
 	dma_priv->bar_addr[dma_priv->config_bar_idx] = baseaddr;
 
+	/* Assigning QDMA access layer function pointers based on the HW design */
+	dma_priv->hw_access = rte_zmalloc("hwaccess",
+					sizeof(struct qdma_hw_access), 0);
+	if (dma_priv->hw_access == NULL) {
+		rte_free(dev->data->mac_addrs);
+		return -ENOMEM;
+	}
+	idx = qdma_hw_access_init(dev, dma_priv->is_vf, dma_priv->hw_access);
+	if (idx < 0) {
+		rte_free(dma_priv->hw_access);
+		rte_free(dev->data->mac_addrs);
+		return -EINVAL;
+	}
+
+	idx = qdma_get_hw_version(dev);
+	if (idx < 0) {
+		rte_free(dma_priv->hw_access);
+		rte_free(dev->data->mac_addrs);
+		return -EINVAL;
+	}
+
 	idx = qdma_identify_bars(dev);
 	if (idx < 0) {
+		rte_free(dma_priv->hw_access);
 		rte_free(dev->data->mac_addrs);
 		return -EINVAL;
 	}
@@ -312,14 +436,99 @@  static int qdma_eth_dev_init(struct rte_eth_dev *dev)
 
 	PMD_DRV_LOG(INFO, "QDMA device driver probe:");
 
+	/* Getting the device attributes from the Hardware */
+	qdma_device_attributes_get(dev);
+
+	/* Create master resource node for queue management on the given
+	 * bus number. Node will be created only once per bus number.
+	 */
+	qbase = DEFAULT_QUEUE_BASE;
+
 	ret = get_max_pci_bus_num(pci_dev->addr.bus, &max_pci_bus);
-	if (ret != 0 && !max_pci_bus) {
+	if (ret != QDMA_SUCCESS && !max_pci_bus) {
 		PMD_DRV_LOG(ERR, "Failed to get max pci bus number\n");
+		rte_free(dma_priv->hw_access);
 		rte_free(dev->data->mac_addrs);
 		return -EINVAL;
 	}
 	PMD_DRV_LOG(INFO, "PCI max bus number : 0x%x", max_pci_bus);
 
+	ret = qdma_master_resource_create(pci_dev->addr.bus, max_pci_bus,
+				qbase, dma_priv->dev_cap.num_qs,
+				&dma_priv->dma_device_index);
+	if (ret == -QDMA_ERR_NO_MEM) {
+		rte_free(dma_priv->hw_access);
+		rte_free(dev->data->mac_addrs);
+		return -ENOMEM;
+	}
+
+	dma_priv->hw_access->qdma_get_function_number(dev,
+			&dma_priv->func_id);
+	PMD_DRV_LOG(INFO, "PF function ID: %d", dma_priv->func_id);
+
+	/* CSR programming is done once per given board or bus number,
+	 * done by the master PF
+	 */
+	if (ret == QDMA_SUCCESS) {
+		RTE_LOG(INFO, PMD, "QDMA PMD VERSION: %s\n", QDMA_PMD_VERSION);
+		dma_priv->hw_access->qdma_set_default_global_csr(dev);
+		for (i = 0; i < dma_priv->dev_cap.mm_channel_max; i++) {
+			if (dma_priv->dev_cap.mm_en) {
+				/* Enable MM C2H Channel */
+				dma_priv->hw_access->qdma_mm_channel_conf(dev,
+							i, 1, 1);
+				/* Enable MM H2C Channel */
+				dma_priv->hw_access->qdma_mm_channel_conf(dev,
+							i, 0, 1);
+			} else {
+				/* Disable MM C2H Channel */
+				dma_priv->hw_access->qdma_mm_channel_conf(dev,
+							i, 1, 0);
+				/* Disable MM H2C Channel */
+				dma_priv->hw_access->qdma_mm_channel_conf(dev,
+							i, 0, 0);
+			}
+		}
+
+		ret = dma_priv->hw_access->qdma_init_ctxt_memory(dev);
+		if (ret < 0) {
+			PMD_DRV_LOG(ERR,
+				"%s: Failed to initialize ctxt memory, err = %d\n",
+				__func__, ret);
+			return -EINVAL;
+		}
+
+		dma_priv->hw_access->qdma_hw_error_enable(dev,
+				dma_priv->hw_access->qdma_max_errors);
+		if (ret < 0) {
+			PMD_DRV_LOG(ERR,
+				"%s: Failed to enable hw errors, err = %d\n",
+				__func__, ret);
+			return -EINVAL;
+		}
+
+		rte_eal_alarm_set(QDMA_ERROR_POLL_FRQ, qdma_check_errors,
+							(void *)dev);
+		dma_priv->is_master = 1;
+	}
+
+	/*
+	 * Create an entry for the device in board list if not already
+	 * created
+	 */
+	ret = qdma_dev_entry_create(dma_priv->dma_device_index,
+				dma_priv->func_id);
+	if (ret != QDMA_SUCCESS &&
+	    ret != -QDMA_ERR_RM_DEV_EXISTS) {
+		PMD_DRV_LOG(ERR, "PF-%d(DEVFN) qdma_dev_entry_create failed: %d\n",
+			    dma_priv->func_id, ret);
+		rte_free(dma_priv->hw_access);
+		rte_free(dev->data->mac_addrs);
+		return -ENOMEM;
+	}
+
+	pcie_perf_enable(pci_dev);
+
 	if (!dma_priv->reset_in_progress) {
 		num_vfs = pci_dev->max_vfs;
 		if (num_vfs) {
@@ -358,6 +567,14 @@  static int qdma_eth_dev_uninit(struct rte_eth_dev *dev)
 	/* only uninitialize in the primary process */
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return -EPERM;
+	/* cancel pending polls */
+	if (qdma_dev->is_master)
+		rte_eal_alarm_cancel(qdma_check_errors, (void *)dev);
+
+	/* Remove the device node from the board list */
+	qdma_dev_entry_destroy(qdma_dev->dma_device_index,
+			qdma_dev->func_id);
+	qdma_master_resource_destroy(qdma_dev->dma_device_index);
 
 	dev->dev_ops = NULL;
 	dev->rx_pkt_burst = NULL;
@@ -381,6 +598,10 @@  static int qdma_eth_dev_uninit(struct rte_eth_dev *dev)
 		qdma_dev->q_info = NULL;
 	}
 
+	if (qdma_dev->hw_access != NULL) {
+		rte_free(qdma_dev->hw_access);
+		qdma_dev->hw_access = NULL;
+	}
 	return 0;
 }