Merge branch 'support-octeon-cn98-devices'

Shinas Rasheed says:

====================
support OCTEON CN98 devices

Implement device unload control net API required for CN98
devices and add support in driver for the same.

V1: https://lore.kernel.org/all/[e-mail]/
====================

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

Documentation/networking/device_drivers/ethernet/marvell/octeon_ep.rst

···
 Supported Devices
 =================
 Currently, this driver support following devices:
+ * Network controller: Cavium, Inc. Device b100
  * Network controller: Cavium, Inc. Device b200
  * Network controller: Cavium, Inc. Device b400
  * Network controller: Cavium, Inc. Device b900

drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c

···
 	conf->sriov_cfg.vf_srn = CN93_SDP_EPF_RINFO_SRN(val);
 
 	val = octep_read_csr64(oct, CN93_SDP_MAC_PF_RING_CTL(oct->pcie_port));
-	conf->pf_ring_cfg.srn =  CN93_SDP_MAC_PF_RING_CTL_SRN(val);
-	conf->pf_ring_cfg.max_io_rings = CN93_SDP_MAC_PF_RING_CTL_RPPF(val);
-	conf->pf_ring_cfg.active_io_rings = conf->pf_ring_cfg.max_io_rings;
+	if (oct->chip_id == OCTEP_PCI_DEVICE_ID_CN98_PF) {
+		conf->pf_ring_cfg.srn =  CN98_SDP_MAC_PF_RING_CTL_SRN(val);
+		conf->pf_ring_cfg.max_io_rings = CN98_SDP_MAC_PF_RING_CTL_RPPF(val);
+		conf->pf_ring_cfg.active_io_rings = conf->pf_ring_cfg.max_io_rings;
+	} else {
+		conf->pf_ring_cfg.srn =  CN93_SDP_MAC_PF_RING_CTL_SRN(val);
+		conf->pf_ring_cfg.max_io_rings = CN93_SDP_MAC_PF_RING_CTL_RPPF(val);
+		conf->pf_ring_cfg.active_io_rings = conf->pf_ring_cfg.max_io_rings;
+	}
 	dev_info(&pdev->dev, "pf_srn=%u rpvf=%u nvfs=%u rppf=%u\n",
 		 conf->pf_ring_cfg.srn, conf->sriov_cfg.active_rings_per_vf,
 		 conf->sriov_cfg.active_vfs, conf->pf_ring_cfg.active_io_rings);
···
 	return IRQ_HANDLED;
 }
 
+/* soft reset of 98xx */
+static int octep_soft_reset_cn98_pf(struct octep_device *oct)
+{
+	dev_info(&oct->pdev->dev, "CN98XX: skip soft reset\n");
+	return 0;
+}
+
 /* soft reset of 93xx */
 static int octep_soft_reset_cn93_pf(struct octep_device *oct)
 {
···
 	oct->hw_ops.misc_intr_handler = octep_misc_intr_handler_cn93_pf;
 	oct->hw_ops.rsvd_intr_handler = octep_rsvd_intr_handler_cn93_pf;
 	oct->hw_ops.ioq_intr_handler = octep_ioq_intr_handler_cn93_pf;
-	oct->hw_ops.soft_reset = octep_soft_reset_cn93_pf;
+	if (oct->chip_id == OCTEP_PCI_DEVICE_ID_CN98_PF)
+		oct->hw_ops.soft_reset = octep_soft_reset_cn98_pf;
+	else
+		oct->hw_ops.soft_reset = octep_soft_reset_cn93_pf;
 	oct->hw_ops.reinit_regs = octep_reinit_regs_cn93_pf;
 
 	oct->hw_ops.enable_interrupts = octep_enable_interrupts_cn93_pf;

drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c

···
 
 /* Control plane version in which OCTEP_CTRL_NET_H2F_CMD was added */
 static const u32 octep_ctrl_net_h2f_cmd_versions[OCTEP_CTRL_NET_H2F_CMD_MAX] = {
-	[OCTEP_CTRL_NET_H2F_CMD_INVALID ... OCTEP_CTRL_NET_H2F_CMD_GET_INFO] =
+	[OCTEP_CTRL_NET_H2F_CMD_INVALID ... OCTEP_CTRL_NET_H2F_CMD_DEV_REMOVE] =
 	 OCTEP_CP_VERSION(1, 0, 0)
 };
 
···
 	return 0;
 }
 
+int octep_ctrl_net_dev_remove(struct octep_device *oct, int vfid)
+{
+	struct octep_ctrl_net_wait_data d = {};
+	struct octep_ctrl_net_h2f_req *req;
+
+	req = &d.data.req;
+	dev_dbg(&oct->pdev->dev, "Sending dev_unload msg to fw\n");
+	init_send_req(&d.msg, req, sizeof(int), vfid);
+	req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_DEV_REMOVE;
+
+	return octep_send_mbox_req(oct, &d, false);
+}
 int octep_ctrl_net_uninit(struct octep_device *oct)
 {
 	struct octep_ctrl_net_wait_data *pos, *n;
+
+	octep_ctrl_net_dev_remove(oct, OCTEP_CTRL_NET_INVALID_VFID);
 
 	list_for_each_entry_safe(pos, n, &oct->ctrl_req_wait_list, list)
 		pos->done = 1;

drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h

···
 	OCTEP_CTRL_NET_H2F_CMD_RX_STATE,
 	OCTEP_CTRL_NET_H2F_CMD_LINK_INFO,
 	OCTEP_CTRL_NET_H2F_CMD_GET_INFO,
+	OCTEP_CTRL_NET_H2F_CMD_DEV_REMOVE,
 	OCTEP_CTRL_NET_H2F_CMD_MAX
 };
 
···
  */
 int octep_ctrl_net_get_info(struct octep_device *oct, int vfid,
 			    struct octep_fw_info *info);
+
+/**
+ * octep_ctrl_net_dev_remove() - Indicate to firmware that a device unload has happened.
+ *
+ * @oct: non-null pointer to struct octep_device.
+ * @vfid: Index of virtual function.
+ *
+ * return value: 0 on success, -errno on failure.
+ */
+int octep_ctrl_net_dev_remove(struct octep_device *oct, int vfid);
 
 /**
  * octep_ctrl_net_uninit() - Uninitialize data for ctrl net.

drivers/net/ethernet/marvell/octeon_ep/octep_main.c

···
 
 /* Supported Devices */
 static const struct pci_device_id octep_pci_id_tbl[] = {
+	{PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, OCTEP_PCI_DEVICE_ID_CN98_PF)},
 	{PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, OCTEP_PCI_DEVICE_ID_CN93_PF)},
 	{PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, OCTEP_PCI_DEVICE_ID_CNF95N_PF)},
 	{PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, OCTEP_PCI_DEVICE_ID_CN10KA_PF)},
···
 static const char *octep_devid_to_str(struct octep_device *oct)
 {
 	switch (oct->chip_id) {
+	case OCTEP_PCI_DEVICE_ID_CN98_PF:
+		return "CN98XX";
 	case OCTEP_PCI_DEVICE_ID_CN93_PF:
 		return "CN93XX";
 	case OCTEP_PCI_DEVICE_ID_CNF95N_PF:
···
 	dev_info(&pdev->dev, "chip_id = 0x%x\n", pdev->device);
 
 	switch (oct->chip_id) {
+	case OCTEP_PCI_DEVICE_ID_CN98_PF:
 	case OCTEP_PCI_DEVICE_ID_CN93_PF:
 	case OCTEP_PCI_DEVICE_ID_CNF95N_PF:
 		dev_info(&pdev->dev, "Setting up OCTEON %s PF PASS%d.%d\n",

drivers/net/ethernet/marvell/octeon_ep/octep_main.h

···
 #define  OCTEP_PCIID_CN93_PF  0xB200177d
 #define  OCTEP_PCIID_CN93_VF  0xB203177d
 
+#define  OCTEP_PCI_DEVICE_ID_CN98_PF 0xB100
 #define  OCTEP_PCI_DEVICE_ID_CN93_PF 0xB200
 #define  OCTEP_PCI_DEVICE_ID_CN93_VF 0xB203
 

drivers/net/ethernet/marvell/octeon_ep/octep_regs_cn9k_pf.h

···
 #define    CN93_SDP_MAC_PF_RING_CTL_SRN(val)   (((val) >> 8) & 0xFF)
 #define    CN93_SDP_MAC_PF_RING_CTL_RPPF(val)  (((val) >> 16) & 0x3F)
 
+#define    CN98_SDP_MAC_PF_RING_CTL_NPFS(val)  (((val) >> 48) & 0xF)
+#define    CN98_SDP_MAC_PF_RING_CTL_SRN(val)   ((val) & 0xFF)
+#define    CN98_SDP_MAC_PF_RING_CTL_RPPF(val)  (((val) >> 32) & 0x3F)
+
 /* Number of non-queue interrupts in CN93xx */
 #define    CN93_NUM_NON_IOQ_INTR    16