Merge branch 'sfc-Siena-subdir'

Martin Habets says:

====================
sfc: Move Siena into a separate subdirectory

The Siena NICs (SFN5000 and SFN6000 series) went EOL in November 2021.
Most of these adapters have been remove from our test labs, and testing
has been reduced to a minimum.

This patch series creates a separate kernel module for the Siena architecture,
analogous to what was done for Falcon some years ago.
This reduces our maintenance for the sfc.ko module, and allows us to
enhance the EF10 and EF100 drivers without the risk of breaking Siena NICs.

After this series further enhancements are needed to differentiate the
new kernel module from sfc.ko, and the Siena code can be removed from sfc.ko.
Thes will be posted as a small follow-up series.
The Siena module is not built by default, but can be enabled
using Kconfig option SFC_SIENA. This will create module sfc-siena.ko.

	Patches

Patch 1 disables the Siena code in the sfc.ko module.
Patches 2-6 establish the code base for the Siena driver.
Patches 7-12 ensure the allyesconfig build succeeds.
Patch 13 adds the basic Siena module.

I do not expect patch 2 through 5 to be reviewed, they are FYI only.
No checkpatch issues were resolved as part of these, but they
were fixed in the subsequent patches.

	Testing

Various build tests were done such as allyesconfig, W=1 and sparse.
The new sfc-siena.ko and sfc.ko modules were tested on a machine with both
these NICs in them, and several tests were run on both drivers.

Martin
---

v3:
- Fix build errors after rebase.

v2:
- Split up patch that copies existing files.
- Only copy a subset of mcdi_pcol.h.
- Use --find-copies-harder as suggested by Benjamin Poirier.
- Merge several patches for the allyesconfig build into larger ones.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/Kconfig

@@ -17,14 +17,14 @@ config NET_VENDOR_SOLARFLARE
 if NET_VENDOR_SOLARFLARE
 
 config SFC
-	tristate "Solarflare SFC9000/SFC9100/EF100-family support"
+	tristate "Solarflare SFC9100/EF100-family support"
 	depends on PCI
 	depends on PTP_1588_CLOCK_OPTIONAL
 	select MDIO
 	select CRC32
 	help
 	  This driver supports 10/40-gigabit Ethernet cards based on
-	  the Solarflare SFC9000-family and SFC9100-family controllers.
+	  the Solarflare SFC9100-family controllers.
 
 	  It also supports 10/25/40/100-gigabit Ethernet cards based
 	  on the Solarflare EF100 networking IP in Xilinx FPGAs.
@@ -47,11 +47,11 @@ config SFC_MCDI_MON
 	  This exposes the on-board firmware-managed sensors as a
 	  hardware monitor device.
 config SFC_SRIOV
-	bool "Solarflare SFC9000-family SR-IOV support"
+	bool "Solarflare SFC9000/SFC9100-family SR-IOV support"
 	depends on SFC && PCI_IOV
 	default y
 	help
-	  This enables support for the SFC9000 I/O Virtualization
+	  This enables support for the Single Root I/O Virtualization
 	  features, allowing accelerated network performance in
 	  virtualized environments.
 config SFC_MCDI_LOGGING

drivers/net/ethernet/sfc/Makefile

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 sfc-y			+= efx.o efx_common.o efx_channels.o nic.o \
-			   farch.o siena.o ef10.o \
+			   ef10.o \
 			   tx.o tx_common.o tx_tso.o rx.o rx_common.o \
 			   selftest.o ethtool.o ethtool_common.o ptp.o \
 			   mcdi.o mcdi_port.o mcdi_port_common.o \
@@ -8,7 +8,7 @@ sfc-y			+= efx.o efx_common.o efx_channels.o nic.o \
 			   ef100.o ef100_nic.o ef100_netdev.o \
 			   ef100_ethtool.o ef100_rx.o ef100_tx.o
 sfc-$(CONFIG_SFC_MTD)	+= mtd.o
-sfc-$(CONFIG_SFC_SRIOV)	+= sriov.o siena_sriov.o ef10_sriov.o ef100_sriov.o
+sfc-$(CONFIG_SFC_SRIOV)	+= sriov.o ef10_sriov.o ef100_sriov.o
 
 obj-$(CONFIG_SFC)	+= sfc.o
 

drivers/net/ethernet/sfc/efx.c

@@ -795,10 +795,6 @@ static void efx_unregister_netdev(struct efx_nic *efx)
 
 /* PCI device ID table */
 static const struct pci_device_id efx_pci_table[] = {
-	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0803),	/* SFC9020 */
-	 .driver_data = (unsigned long) &siena_a0_nic_type},
-	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0813),	/* SFL9021 */
-	 .driver_data = (unsigned long) &siena_a0_nic_type},
 	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0903),  /* SFC9120 PF */
 	 .driver_data = (unsigned long) &efx_hunt_a0_nic_type},
 	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1903),  /* SFC9120 VF */
@@ -1294,12 +1290,6 @@ static int __init efx_init_module(void)
 	if (rc)
 		goto err_notifier;
 
-#ifdef CONFIG_SFC_SRIOV
-	rc = efx_init_sriov();
-	if (rc)
-		goto err_sriov;
-#endif
-
 	rc = efx_create_reset_workqueue();
 	if (rc)
 		goto err_reset;
@@ -1319,10 +1309,6 @@ static int __init efx_init_module(void)
  err_pci:
 	efx_destroy_reset_workqueue();
  err_reset:
-#ifdef CONFIG_SFC_SRIOV
-	efx_fini_sriov();
- err_sriov:
-#endif
 	unregister_netdevice_notifier(&efx_netdev_notifier);
  err_notifier:
 	return rc;
@@ -1335,9 +1321,6 @@ static void __exit efx_exit_module(void)
 	pci_unregister_driver(&ef100_pci_driver);
 	pci_unregister_driver(&efx_pci_driver);
 	efx_destroy_reset_workqueue();
-#ifdef CONFIG_SFC_SRIOV
-	efx_fini_sriov();
-#endif
 	unregister_netdevice_notifier(&efx_netdev_notifier);
 
 }

drivers/net/ethernet/sfc/nic.h

@@ -301,10 +301,6 @@ struct efx_ef10_nic_data {
 int efx_ef10_tx_tso_desc(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
 			 bool *data_mapped);
 
-int efx_init_sriov(void);
-void efx_fini_sriov(void);
-
-extern const struct efx_nic_type siena_a0_nic_type;
 extern const struct efx_nic_type efx_hunt_a0_nic_type;
 extern const struct efx_nic_type efx_hunt_a0_vf_nic_type;