Update Barefoot kdrv (#4355)

platform/barefoot/bfn-modules/modules/bf_ioctl.h

@@ -1,25 +1,28 @@
 /*******************************************************************************
- * BAREFOOT NETWORKS CONFIDENTIAL & PROPRIETARY
+ Barefoot Networks Switch ASIC Linux driver
- *
+ Copyright(c) 2015 - 2019 Barefoot Networks, Inc.
- * Copyright (c) 2018-2018 Barefoot Networks, Inc.
- *
- * NOTICE: All information contained herein is, and remains the property of
- * Barefoot Networks, Inc. and its suppliers, if any. The intellectual and
- * technical concepts contained herein are proprietary to Barefoot Networks,
- * Inc.
- * and its suppliers and may be covered by U.S. and Foreign Patents, patents in
- * process, and are protected by trade secret or copyright law.
- * Dissemination of this information or reproduction of this material is
- * strictly forbidden unless prior written permission is obtained from
- * Barefoot Networks, Inc.
- *
- * No warranty, explicit or implicit is provided, unless granted under a
- * written agreement with Barefoot Networks, Inc.
- *
- * $Id: $
- *
- ******************************************************************************/
 
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ info@barefootnetworks.com
+ Barefoot Networks, 4750 Patrick Henry Drive, Santa Clara CA 95054
+
+*******************************************************************************/
 #ifndef _BF_IOCTL_H_
 #define _BF_IOCTL_H_
 
@@ -35,6 +38,7 @@ typedef uint64_t phys_addr_t;
 #endif /* __KERNEL__ */
 
 #define BF_IOC_MAGIC 'b'
+#define BF_TBUS_MSIX_INDICES_MAX   3
 
 typedef struct bf_dma_bus_map_s
 {
@@ -43,7 +47,26 @@ typedef struct bf_dma_bus_map_s
   size_t size;
 } bf_dma_bus_map_t;
 
+typedef struct bf_tbus_msix_indices_s
+{
+  int cnt;
+  int indices[BF_TBUS_MSIX_INDICES_MAX];
+} bf_tbus_msix_indices_t;
+
+enum bf_intr_mode {
+  BF_INTR_MODE_NONE = 0,
+  BF_INTR_MODE_LEGACY,
+  BF_INTR_MODE_MSI,
+  BF_INTR_MODE_MSIX,
+};
+
+typedef struct bf_intr_mode_s {
+  enum bf_intr_mode intr_mode;
+} bf_intr_mode_t;
+
 #define BF_IOCMAPDMAADDR    _IOWR(BF_IOC_MAGIC, 0, bf_dma_bus_map_t)
-#define BF_IOCUNMAPDMAADDR  _IOW(BF_IOC_MAGIC, 0, bf_dma_bus_map_t)
+#define BF_IOCUNMAPDMAADDR  _IOW(BF_IOC_MAGIC, 1, bf_dma_bus_map_t)
+#define BF_TBUS_MSIX_INDEX  _IOW(BF_IOC_MAGIC, 2, bf_tbus_msix_indices_t)
+#define BF_GET_INTR_MODE    _IOR(BF_IOC_MAGIC, 3, bf_intr_mode_t)
 
 #endif /* _BF_IOCTL_H_ */

platform/barefoot/bfn-modules/modules/bf_kdrv.h

@@ -0,0 +1,146 @@
+/*******************************************************************************
+ Barefoot Networks Switch ASIC Linux driver
+ Copyright(c) 2015 - 2019 Barefoot Networks, Inc.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ info@barefootnetworks.com
+ Barefoot Networks, 4750 Patrick Henry Drive, Santa Clara CA 95054
+
+*******************************************************************************/
+#ifndef _BF_KDRV_H_
+#define _BF_KDRV_H_
+
+#include <linux/pci.h>
+#include <linux/msi.h>
+#include <linux/version.h>
+
+#ifndef phys_addr_t
+typedef uint64_t phys_addr_t;
+#endif
+
+#define PCI_VENDOR_ID_BF 0x1d1c
+#define TOFINO_DEV_ID_A0 0x01
+#define TOFINO_DEV_ID_B0 0x10
+#define TOFINO2_DEV_ID_A0 0x0100
+#define TOFINO2_DEV_ID_A00 0x0000
+#define TOFINO2_DEV_ID_B0 0x0110
+
+#ifndef PCI_MSIX_ENTRY_SIZE
+#define PCI_MSIX_ENTRY_SIZE 16
+#define PCI_MSIX_ENTRY_LOWER_ADDR 0
+#define PCI_MSIX_ENTRY_UPPER_ADDR 4
+#define PCI_MSIX_ENTRY_DATA 8
+#define PCI_MSIX_ENTRY_VECTOR_CTRL 12
+#define PCI_MSIX_ENTRY_CTRL_MASKBIT 1
+#endif
+
+#define BF_CLASS_NAME "bf"
+#define BF_MAX_DEVICE_CNT 256
+#define BF_INTR_MODE_NONE_NAME "none"
+#define BF_INTR_MODE_LEGACY_NAME "legacy"
+#define BF_INTR_MODE_MSI_NAME "msi"
+#define BF_INTR_MODE_MSIX_NAME "msix"
+#define BF_MAX_BAR_MAPS 6
+#define BF_MSIX_ENTRY_CNT 32 /* 512  for tofino-1 */
+#define BF_MSI_ENTRY_CNT 2
+#define BF_MSI_INT_TBUS 1
+
+#define BF_TBUS_MSIX_INDEX_INVALID (0)
+#define BF_TBUS_MSIX_BASE_INDEX_TOF1 (32)
+
+/* Tofino generation type */
+typedef enum {
+  BF_TOFINO_NONE = 0,
+  BF_TOFINO_1,
+  BF_TOFINO_2,
+} bf_tof_type;
+
+/* device memory */
+struct bf_dev_mem {
+  const char *name;
+  phys_addr_t addr;
+  resource_size_t size;
+  void __iomem *internal_addr;
+};
+
+struct bf_listener {
+  struct bf_pci_dev *bfdev;
+  s32 event_count[BF_MSIX_ENTRY_CNT];
+  int minor;
+  struct bf_listener *next;
+};
+
+/* device information */
+struct bf_dev_info {
+  struct module *owner;
+  struct device *dev;
+  int minor;
+  atomic_t event[BF_MSIX_ENTRY_CNT];
+  wait_queue_head_t wait;
+  const char *version;
+  struct bf_dev_mem mem[BF_MAX_BAR_MAPS];
+  struct msix_entry *msix_entries;
+  long irq;                /* first irq vector */
+  int num_irq;             /* number of irq vectors */
+  unsigned long irq_flags; /* sharable ?? */
+  uint16_t pci_dev_id;     /* generation type of BF ASIC */
+  bf_tof_type tof_type;    /* Tofino generation type */
+  /* msix index assigned to tbus MSIX for Tofino-2 only */
+  int tbus_msix_ind[BF_TBUS_MSIX_INDICES_MAX];
+  int tbus_msix_map_enable;
+  int pci_error_state;     /* was there a pci bus error */
+};
+
+/* cookie to be passed to IRQ handler, useful especially with MSIX */
+struct bf_int_vector {
+  struct bf_pci_dev *bf_dev;
+  int int_vec_offset;
+};
+
+/**
+ * A structure describing the private information for a BF pcie device.
+ */
+struct bf_pci_dev {
+  struct bf_dev_info info;
+  struct pci_dev *pdev;
+  enum bf_intr_mode mode;
+  u8 instance;
+  char name[16];
+  struct bf_int_vector bf_int_vec[BF_MSIX_ENTRY_CNT];
+  struct bf_listener *
+      listener_head; /* head of a singly linked list of listeners */
+  void *adapter_ptr; /* pkt processing adapter */
+};
+
+/* TBD: Need to build with CONFIG_PCI_MSI */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)
+#if defined(RHEL_RELEASE_CODE)
+#else
+extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
+#endif /* defined(RHEL_RELEASE_CODE) */
+extern int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec);
+#else
+extern int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec);
+extern int pci_enable_msix_range(struct pci_dev *dev,
+                                 struct msix_entry *entries,
+                                 int minvec,
+                                 int maxvec);
+#endif
+
+#endif /* _BF_KDRV_H_ */