From: Shannon Nelson <snelson@pensando.io>
Date: Tue, 3 Sep 2019 15:28:06 -0700
Subject: ionic: Add port management commands
Patch-mainline: v5.4-rc1
Git-commit: 04436595c435060a1735759645b1417513124c1f
References: bsc#1167773

The port management commands apply to the physical port
associated with the PCI device, which might be shared among
several logical interfaces.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/pensando/ionic/ionic.h         |    4 
 drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c |   16 +++
 drivers/net/ethernet/pensando/ionic/ionic_dev.c     |   92 ++++++++++++++++++++
 drivers/net/ethernet/pensando/ionic/ionic_dev.h     |   13 ++
 drivers/net/ethernet/pensando/ionic/ionic_main.c    |   88 +++++++++++++++++++
 5 files changed, 213 insertions(+)

--- a/drivers/net/ethernet/pensando/ionic/ionic.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic.h
@@ -42,4 +42,8 @@ int ionic_identify(struct ionic *ionic);
 int ionic_init(struct ionic *ionic);
 int ionic_reset(struct ionic *ionic);
 
+int ionic_port_identify(struct ionic *ionic);
+int ionic_port_init(struct ionic *ionic);
+int ionic_port_reset(struct ionic *ionic);
+
 #endif /* _IONIC_H_ */
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
@@ -138,12 +138,27 @@ static int ionic_probe(struct pci_dev *p
 		goto err_out_teardown;
 	}
 
+	/* Configure the ports */
+	err = ionic_port_identify(ionic);
+	if (err) {
+		dev_err(dev, "Cannot identify port: %d, aborting\n", err);
+		goto err_out_reset;
+	}
+
+	err = ionic_port_init(ionic);
+	if (err) {
+		dev_err(dev, "Cannot init port: %d, aborting\n", err);
+		goto err_out_reset;
+	}
+
 	err = ionic_devlink_register(ionic);
 	if (err)
 		dev_err(dev, "Cannot register devlink: %d\n", err);
 
 	return 0;
 
+err_out_reset:
+	ionic_reset(ionic);
 err_out_teardown:
 	ionic_dev_teardown(ionic);
 err_out_unmap_bars:
@@ -170,6 +185,7 @@ static void ionic_remove(struct pci_dev
 		return;
 
 	ionic_devlink_unregister(ionic);
+	ionic_port_reset(ionic);
 	ionic_reset(ionic);
 	ionic_dev_teardown(ionic);
 	ionic_unmap_bars(ionic);
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -134,3 +134,95 @@ void ionic_dev_cmd_reset(struct ionic_de
 
 	ionic_dev_cmd_go(idev, &cmd);
 }
+
+/* Port commands */
+void ionic_dev_cmd_port_identify(struct ionic_dev *idev)
+{
+	union ionic_dev_cmd cmd = {
+		.port_init.opcode = IONIC_CMD_PORT_IDENTIFY,
+		.port_init.index = 0,
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_init(struct ionic_dev *idev)
+{
+	union ionic_dev_cmd cmd = {
+		.port_init.opcode = IONIC_CMD_PORT_INIT,
+		.port_init.index = 0,
+		.port_init.info_pa = cpu_to_le64(idev->port_info_pa),
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_reset(struct ionic_dev *idev)
+{
+	union ionic_dev_cmd cmd = {
+		.port_reset.opcode = IONIC_CMD_PORT_RESET,
+		.port_reset.index = 0,
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state)
+{
+	union ionic_dev_cmd cmd = {
+		.port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
+		.port_setattr.index = 0,
+		.port_setattr.attr = IONIC_PORT_ATTR_STATE,
+		.port_setattr.state = state,
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed)
+{
+	union ionic_dev_cmd cmd = {
+		.port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
+		.port_setattr.index = 0,
+		.port_setattr.attr = IONIC_PORT_ATTR_SPEED,
+		.port_setattr.speed = cpu_to_le32(speed),
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable)
+{
+	union ionic_dev_cmd cmd = {
+		.port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
+		.port_setattr.index = 0,
+		.port_setattr.attr = IONIC_PORT_ATTR_AUTONEG,
+		.port_setattr.an_enable = an_enable,
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type)
+{
+	union ionic_dev_cmd cmd = {
+		.port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
+		.port_setattr.index = 0,
+		.port_setattr.attr = IONIC_PORT_ATTR_FEC,
+		.port_setattr.fec_type = fec_type,
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type)
+{
+	union ionic_dev_cmd cmd = {
+		.port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
+		.port_setattr.index = 0,
+		.port_setattr.attr = IONIC_PORT_ATTR_PAUSE,
+		.port_setattr.pause_type = pause_type,
+	};
+
+	ionic_dev_cmd_go(idev, &cmd);
+}
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -117,6 +117,10 @@ struct ionic_dev {
 	struct ionic_intr __iomem *intr_ctrl;
 	u64 __iomem *intr_status;
 
+	u32 port_info_sz;
+	struct ionic_port_info *port_info;
+	dma_addr_t port_info_pa;
+
 	struct ionic_devinfo dev_info;
 };
 
@@ -135,4 +139,13 @@ void ionic_dev_cmd_identify(struct ionic
 void ionic_dev_cmd_init(struct ionic_dev *idev);
 void ionic_dev_cmd_reset(struct ionic_dev *idev);
 
+void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
+void ionic_dev_cmd_port_init(struct ionic_dev *idev);
+void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
+void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
+void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
+void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
+void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
+void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
+
 #endif /* _IONIC_DEV_H_ */
--- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
@@ -303,6 +303,94 @@ int ionic_reset(struct ionic *ionic)
 	return err;
 }
 
+int ionic_port_identify(struct ionic *ionic)
+{
+	struct ionic_identity *ident = &ionic->ident;
+	struct ionic_dev *idev = &ionic->idev;
+	size_t sz;
+	int err;
+
+	mutex_lock(&ionic->dev_cmd_lock);
+
+	ionic_dev_cmd_port_identify(idev);
+	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
+	if (!err) {
+		sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data));
+		memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz);
+	}
+
+	mutex_unlock(&ionic->dev_cmd_lock);
+
+	return err;
+}
+
+int ionic_port_init(struct ionic *ionic)
+{
+	struct ionic_identity *ident = &ionic->ident;
+	struct ionic_dev *idev = &ionic->idev;
+	size_t sz;
+	int err;
+
+	if (idev->port_info)
+		return 0;
+
+	idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
+	idev->port_info = dma_alloc_coherent(ionic->dev, idev->port_info_sz,
+					     &idev->port_info_pa,
+					     GFP_KERNEL);
+	if (!idev->port_info) {
+		dev_err(ionic->dev, "Failed to allocate port info, aborting\n");
+		return -ENOMEM;
+	}
+
+	sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));
+
+	mutex_lock(&ionic->dev_cmd_lock);
+
+	memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz);
+	ionic_dev_cmd_port_init(idev);
+	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
+
+	ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
+	(void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
+
+	mutex_unlock(&ionic->dev_cmd_lock);
+	if (err) {
+		dev_err(ionic->dev, "Failed to init port\n");
+		dma_free_coherent(ionic->dev, idev->port_info_sz,
+				  idev->port_info, idev->port_info_pa);
+		idev->port_info = NULL;
+		idev->port_info_pa = 0;
+	}
+
+	return err;
+}
+
+int ionic_port_reset(struct ionic *ionic)
+{
+	struct ionic_dev *idev = &ionic->idev;
+	int err;
+
+	if (!idev->port_info)
+		return 0;
+
+	mutex_lock(&ionic->dev_cmd_lock);
+	ionic_dev_cmd_port_reset(idev);
+	err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
+	mutex_unlock(&ionic->dev_cmd_lock);
+
+	dma_free_coherent(ionic->dev, idev->port_info_sz,
+			  idev->port_info, idev->port_info_pa);
+
+	idev->port_info = NULL;
+	idev->port_info_pa = 0;
+
+	if (err)
+		dev_err(ionic->dev, "Failed to reset port\n");
+
+	return err;
+}
+
 static int __init ionic_init_module(void)
 {
 	pr_info("%s %s, ver %s\n",