eal: fix check for power of 2 in 0 case

[dpdk.git] / lib / librte_pmd_virtio / virtio_pci.h

diff --git a/lib/librte_pmd_virtio/virtio_pci.h b/lib/librte_pmd_virtio/virtio_pci.h
index 04fc156..373f9dc 100644 (file)
--- a/lib/librte_pmd_virtio/virtio_pci.h
+++ b/lib/librte_pmd_virtio/virtio_pci.h
@@ -1,13 +1,13 @@
 /*-
  *   BSD LICENSE
- * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   All rights reserved.
- * 
+ *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
  *   are met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above copyright
@@ -17,7 +17,7 @@
  *     * Neither the name of Intel Corporation nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
- * 
+ *
  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -35,7 +35,13 @@
 #define _VIRTIO_PCI_H_
 
 #include <stdint.h>
+
+#ifdef __FreeBSD__
+#include <sys/types.h>
+#include <machine/cpufunc.h>
+#else
 #include <sys/io.h>
+#endif
 
 #include <rte_ethdev.h>
 
@@ -59,12 +65,12 @@ struct virtqueue;
 #define VIRTIO_PCI_QUEUE_SEL      14 /* current VQ selection (16, RW) */
 #define VIRTIO_PCI_QUEUE_NOTIFY   16 /* notify host regarding VQ (16, RW) */
 #define VIRTIO_PCI_STATUS         18 /* device status register (8, RW) */
-#define VIRTIO_PCI_ISR            19 /* interrupt status register, reading
-                                      * also clears the register (8, RO) */
+#define VIRTIO_PCI_ISR           19 /* interrupt status register, reading
+                                     * also clears the register (8, RO) */
 /* Only if MSIX is enabled: */
 #define VIRTIO_MSI_CONFIG_VECTOR  20 /* configuration change vector (16, RW) */
-#define VIRTIO_MSI_QUEUE_VECTOR   22 /* vector for selected VQ notifications
-                                      (16, RW) */
+#define VIRTIO_MSI_QUEUE_VECTOR          22 /* vector for selected VQ notifications
+                                     (16, RW) */
 
 /* The bit of the ISR which indicates a device has an interrupt. */
 #define VIRTIO_PCI_ISR_INTR   0x1
@@ -156,24 +162,14 @@ struct virtqueue;
 #define VIRTIO_MAX_VIRTQUEUES 8
 
 struct virtio_hw {
+       struct virtqueue *cvq;
        uint32_t    io_base;
-       uint32_t    host_features;
        uint32_t    guest_features;
-       
-       struct virtqueue *cvq;
-
-       uint16_t    vtnet_hdr_size;
-
        uint32_t    max_tx_queues;
        uint32_t    max_rx_queues;
-       uint16_t    device_id;
-       uint16_t    vendor_id;
-       uint16_t    subsystem_device_id;
-       uint16_t    subsystem_vendor_id;
-       uint8_t     revision_id;
+       uint16_t    vtnet_hdr_size;
+       uint8_t     use_msix;
        uint8_t     mac_addr[ETHER_ADDR_LEN];
-       int         adapter_stopped;
-       struct      rte_eth_stats eth_stats;
 };
 
 /*
@@ -186,14 +182,14 @@ struct virtio_net_config {
        uint8_t    mac[ETHER_ADDR_LEN];
        /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
        uint16_t   status;
-};
-/* Value indicated in device config */
-#define VIRTIO_PCI_FLAG_MSIX  0x0020
+       uint16_t   max_virtqueue_pairs;
+} __attribute__((packed));
+
 /*
  * The remaining space is defined by each driver as the per-driver
  * configuration space.
  */
-#define VIRTIO_PCI_CONFIG(hw) (((hw)->guest_features & VIRTIO_PCI_FLAG_MSIX) ? 24 : 20)
+#define VIRTIO_PCI_CONFIG(hw) (((hw)->use_msix) ? 24 : 20)
 
 /*
  * How many bits to shift physical queue address written to QUEUE_PFN.
@@ -204,6 +200,28 @@ struct virtio_net_config {
 /* The alignment to use between consumer and producer parts of vring. */
 #define VIRTIO_PCI_VRING_ALIGN 4096
 
+#ifdef __FreeBSD__
+
+static inline void
+outb_p(unsigned char data, unsigned int port)
+{
+
+       outb(port, (u_char)data);
+}
+
+static inline void
+outw_p(unsigned short data, unsigned int port)
+{
+       outw(port, (u_short)data);
+}
+
+static inline void
+outl_p(unsigned int data, unsigned int port)
+{
+       outl(port, (u_int)data);
+}
+#endif
+
 #define VIRTIO_PCI_REG_ADDR(hw, reg) \
        (unsigned short)((hw)->io_base + (reg))
 
@@ -223,9 +241,9 @@ struct virtio_net_config {
        outl_p((unsigned int)(value), (VIRTIO_PCI_REG_ADDR((hw), (reg))))
 
 static inline int
-vtpci_with_feature(struct virtio_hw *hw, uint64_t feature)
+vtpci_with_feature(struct virtio_hw *hw, uint32_t feature)
 {
-       return ((hw->guest_features & feature) != 0);
+       return (hw->guest_features & feature) != 0;
 }
 
 /*
@@ -239,9 +257,7 @@ uint8_t vtpci_get_status(struct virtio_hw *);
 
 void vtpci_set_status(struct virtio_hw *, uint8_t);
 
-int vtpci_with_feature(struct virtio_hw *, uint64_t);
-
-uint64_t vtpci_negotiate_features(struct virtio_hw *, uint64_t);
+uint32_t vtpci_negotiate_features(struct virtio_hw *, uint32_t);
 
 void vtpci_write_dev_config(struct virtio_hw *, uint64_t, void *, int);