drivers/net/ethernet/ibm/ibmveth.h - linux - Git at Google

 /*
  * IBM Power Virtual Ethernet Device Driver
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
  *
  * Copyright (C) IBM Corporation, 2003, 2010
  *
  * Authors: Dave Larson <larson1@us.ibm.com>
  *	    Santiago Leon <santil@linux.vnet.ibm.com>
  *	    Brian King <brking@linux.vnet.ibm.com>
  *	    Robert Jennings <rcj@linux.vnet.ibm.com>
  *	    Anton Blanchard <anton@au.ibm.com>
  */

 #ifndef _IBMVETH_H
 #define _IBMVETH_H

 /* constants for H_MULTICAST_CTRL */
 #define IbmVethMcastReceptionModifyBit     0x80000UL
 #define IbmVethMcastReceptionEnableBit     0x20000UL
 #define IbmVethMcastFilterModifyBit        0x40000UL
 #define IbmVethMcastFilterEnableBit        0x10000UL

 #define IbmVethMcastEnableRecv       (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
 #define IbmVethMcastDisableRecv      (IbmVethMcastReceptionModifyBit)
 #define IbmVethMcastEnableFiltering  (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
 #define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
 #define IbmVethMcastAddFilter        0x1UL
 #define IbmVethMcastRemoveFilter     0x2UL
 #define IbmVethMcastClearFilterTable 0x3UL

 #define IBMVETH_ILLAN_LRG_SR_ENABLED	0x0000000000010000UL
 #define IBMVETH_ILLAN_LRG_SND_SUPPORT	0x0000000000008000UL
 #define IBMVETH_ILLAN_PADDED_PKT_CSUM	0x0000000000002000UL
 #define IBMVETH_ILLAN_TRUNK_PRI_MASK	0x0000000000000F00UL
 #define IBMVETH_ILLAN_IPV6_TCP_CSUM		0x0000000000000004UL
 #define IBMVETH_ILLAN_IPV4_TCP_CSUM		0x0000000000000002UL
 #define IBMVETH_ILLAN_ACTIVE_TRUNK		0x0000000000000001UL

 /* hcall macros */
 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
   plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)

 #define h_free_logical_lan(ua) \
   plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)

 #define h_add_logical_lan_buffer(ua, buf) \
   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)

 static inline long h_send_logical_lan(unsigned long unit_address,
 		unsigned long desc1, unsigned long desc2, unsigned long desc3,
 		unsigned long desc4, unsigned long desc5, unsigned long desc6,
 		unsigned long corellator_in, unsigned long *corellator_out,
 		unsigned long mss, unsigned long large_send_support)
 {
 	long rc;
 	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];

 	if (large_send_support)
 		rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
 				  desc1, desc2, desc3, desc4, desc5, desc6,
 				  corellator_in, mss);
 	else
 		rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
 				  desc1, desc2, desc3, desc4, desc5, desc6,
 				  corellator_in);

 	*corellator_out = retbuf[0];

 	return rc;
 }

 static inline long h_illan_attributes(unsigned long unit_address,
 				      unsigned long reset_mask, unsigned long set_mask,
 				      unsigned long *ret_attributes)
 {
 	long rc;
 	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

 	rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
 			 reset_mask, set_mask);

 	*ret_attributes = retbuf[0];

 	return rc;
 }

 #define h_multicast_ctrl(ua, cmd, mac) \
   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)

 #define h_change_logical_lan_mac(ua, mac) \
   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)

 #define IBMVETH_NUM_BUFF_POOLS 5
 #define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
 #define IBMVETH_MIN_MTU 68
 #define IBMVETH_MAX_POOL_COUNT 4096
 #define IBMVETH_BUFF_LIST_SIZE 4096
 #define IBMVETH_FILT_LIST_SIZE 4096
 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)

 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
 static int pool_count[] = { 256, 512, 256, 256, 256 };
 static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
 static int pool_active[] = { 1, 1, 0, 0, 1};

 #define IBM_VETH_INVALID_MAP ((u16)0xffff)

 struct ibmveth_buff_pool {
     u32 size;
     u32 index;
     u32 buff_size;
     u32 threshold;
     atomic_t available;
     u32 consumer_index;
     u32 producer_index;
     u16 *free_map;
     dma_addr_t *dma_addr;
     struct sk_buff **skbuff;
     int active;
     struct kobject kobj;
 };

 struct ibmveth_rx_q {
     u64        index;
     u64        num_slots;
     u64        toggle;
     dma_addr_t queue_dma;
     u32        queue_len;
     struct ibmveth_rx_q_entry *queue_addr;
 };

 struct ibmveth_adapter {
     struct vio_dev *vdev;
     struct net_device *netdev;
     struct napi_struct napi;
     struct net_device_stats stats;
     unsigned int mcastFilterSize;
     void * buffer_list_addr;
     void * filter_list_addr;
     dma_addr_t buffer_list_dma;
     dma_addr_t filter_list_dma;
     struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
     struct ibmveth_rx_q rx_queue;
     int pool_config;
     int rx_csum;
     int large_send;
     void *bounce_buffer;
     dma_addr_t bounce_buffer_dma;

     u64 fw_ipv6_csum_support;
     u64 fw_ipv4_csum_support;
     u64 fw_large_send_support;
     /* adapter specific stats */
     u64 replenish_task_cycles;
     u64 replenish_no_mem;
     u64 replenish_add_buff_failure;
     u64 replenish_add_buff_success;
     u64 rx_invalid_buffer;
     u64 rx_no_buffer;
     u64 tx_map_failed;
     u64 tx_send_failed;
     u64 tx_large_packets;
     u64 rx_large_packets;
 };

 /*
  * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
  * so we don't need to byteswap the two elements. However since we use
  * a union (ibmveth_buf_desc) to convert from the struct to a u64 we
  * do end up with endian specific ordering of the elements and that
  * needs correcting.
  */
 struct ibmveth_buf_desc_fields {
 #ifdef __BIG_ENDIAN
 	u32 flags_len;
 	u32 address;
 #else
 	u32 address;
 	u32 flags_len;
 #endif
 #define IBMVETH_BUF_VALID	0x80000000
 #define IBMVETH_BUF_TOGGLE	0x40000000
 #define IBMVETH_BUF_LRG_SND     0x04000000
 #define IBMVETH_BUF_NO_CSUM	0x02000000
 #define IBMVETH_BUF_CSUM_GOOD	0x01000000
 #define IBMVETH_BUF_LEN_MASK	0x00FFFFFF
 };

 union ibmveth_buf_desc {
     u64 desc;
     struct ibmveth_buf_desc_fields fields;
 };

 struct ibmveth_rx_q_entry {
 	__be32 flags_off;
 #define IBMVETH_RXQ_TOGGLE		0x80000000
 #define IBMVETH_RXQ_TOGGLE_SHIFT	31
 #define IBMVETH_RXQ_VALID		0x40000000
 #define IBMVETH_RXQ_LRG_PKT		0x04000000
 #define IBMVETH_RXQ_NO_CSUM		0x02000000
 #define IBMVETH_RXQ_CSUM_GOOD		0x01000000
 #define IBMVETH_RXQ_OFF_MASK		0x0000FFFF

 	__be32 length;
 	/* correlator is only used by the OS, no need to byte swap */
 	u64 correlator;
 };

 #endif /* _IBMVETH_H */
	/*
	* IBM Power Virtual Ethernet Device Driver
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
	*
	* Copyright (C) IBM Corporation, 2003, 2010
	*
	* Authors: Dave Larson <larson1@us.ibm.com>
	* Santiago Leon <santil@linux.vnet.ibm.com>
	* Brian King <brking@linux.vnet.ibm.com>
	* Robert Jennings <rcj@linux.vnet.ibm.com>
	* Anton Blanchard <anton@au.ibm.com>
	*/

	#ifndef _IBMVETH_H
	#define _IBMVETH_H

	/* constants for H_MULTICAST_CTRL */
	#define IbmVethMcastReceptionModifyBit 0x80000UL
	#define IbmVethMcastReceptionEnableBit 0x20000UL
	#define IbmVethMcastFilterModifyBit 0x40000UL
	#define IbmVethMcastFilterEnableBit 0x10000UL

	#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit \| IbmVethMcastReceptionEnableBit)
	#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
	#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit \| IbmVethMcastFilterEnableBit)
	#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
	#define IbmVethMcastAddFilter 0x1UL
	#define IbmVethMcastRemoveFilter 0x2UL
	#define IbmVethMcastClearFilterTable 0x3UL

	#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL
	#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL
	#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL
	#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL
	#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL
	#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL
	#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL

	/* hcall macros */
	#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
	plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)

	#define h_free_logical_lan(ua) \
	plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)

	#define h_add_logical_lan_buffer(ua, buf) \
	plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)

	static inline long h_send_logical_lan(unsigned long unit_address,
	unsigned long desc1, unsigned long desc2, unsigned long desc3,
	unsigned long desc4, unsigned long desc5, unsigned long desc6,
	unsigned long corellator_in, unsigned long *corellator_out,
	unsigned long mss, unsigned long large_send_support)
	{
	long rc;
	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];

	if (large_send_support)
	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
	desc1, desc2, desc3, desc4, desc5, desc6,
	corellator_in, mss);
	else
	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
	desc1, desc2, desc3, desc4, desc5, desc6,
	corellator_in);

	*corellator_out = retbuf[0];

	return rc;
	}

	static inline long h_illan_attributes(unsigned long unit_address,
	unsigned long reset_mask, unsigned long set_mask,
	unsigned long *ret_attributes)
	{
	long rc;
	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];

	rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
	reset_mask, set_mask);

	*ret_attributes = retbuf[0];

	return rc;
	}

	#define h_multicast_ctrl(ua, cmd, mac) \
	plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)

	#define h_change_logical_lan_mac(ua, mac) \
	plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)

	#define IBMVETH_NUM_BUFF_POOLS 5
	#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
	#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
	#define IBMVETH_MIN_MTU 68
	#define IBMVETH_MAX_POOL_COUNT 4096
	#define IBMVETH_BUFF_LIST_SIZE 4096
	#define IBMVETH_FILT_LIST_SIZE 4096
	#define IBMVETH_MAX_BUF_SIZE (1024 * 128)

	static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
	static int pool_count[] = { 256, 512, 256, 256, 256 };
	static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
	static int pool_active[] = { 1, 1, 0, 0, 1};

	#define IBM_VETH_INVALID_MAP ((u16)0xffff)

	struct ibmveth_buff_pool {
	u32 size;
	u32 index;
	u32 buff_size;
	u32 threshold;
	atomic_t available;
	u32 consumer_index;
	u32 producer_index;
	u16 *free_map;
	dma_addr_t *dma_addr;
	struct sk_buff **skbuff;
	int active;
	struct kobject kobj;
	};

	struct ibmveth_rx_q {
	u64 index;
	u64 num_slots;
	u64 toggle;
	dma_addr_t queue_dma;
	u32 queue_len;
	struct ibmveth_rx_q_entry *queue_addr;
	};

	struct ibmveth_adapter {
	struct vio_dev *vdev;
	struct net_device *netdev;
	struct napi_struct napi;
	struct net_device_stats stats;
	unsigned int mcastFilterSize;
	void * buffer_list_addr;
	void * filter_list_addr;
	dma_addr_t buffer_list_dma;
	dma_addr_t filter_list_dma;
	struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
	struct ibmveth_rx_q rx_queue;
	int pool_config;
	int rx_csum;
	int large_send;
	void *bounce_buffer;
	dma_addr_t bounce_buffer_dma;

	u64 fw_ipv6_csum_support;
	u64 fw_ipv4_csum_support;
	u64 fw_large_send_support;
	/* adapter specific stats */
	u64 replenish_task_cycles;
	u64 replenish_no_mem;
	u64 replenish_add_buff_failure;
	u64 replenish_add_buff_success;
	u64 rx_invalid_buffer;
	u64 rx_no_buffer;
	u64 tx_map_failed;
	u64 tx_send_failed;
	u64 tx_large_packets;
	u64 rx_large_packets;
	};

	/*
	* We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
	* so we don't need to byteswap the two elements. However since we use
	* a union (ibmveth_buf_desc) to convert from the struct to a u64 we
	* do end up with endian specific ordering of the elements and that
	* needs correcting.
	*/
	struct ibmveth_buf_desc_fields {
	#ifdef __BIG_ENDIAN
	u32 flags_len;
	u32 address;
	#else
	u32 address;
	u32 flags_len;
	#endif
	#define IBMVETH_BUF_VALID 0x80000000
	#define IBMVETH_BUF_TOGGLE 0x40000000
	#define IBMVETH_BUF_LRG_SND 0x04000000
	#define IBMVETH_BUF_NO_CSUM 0x02000000
	#define IBMVETH_BUF_CSUM_GOOD 0x01000000
	#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
	};

	union ibmveth_buf_desc {
	u64 desc;
	struct ibmveth_buf_desc_fields fields;
	};

	struct ibmveth_rx_q_entry {
	__be32 flags_off;
	#define IBMVETH_RXQ_TOGGLE 0x80000000
	#define IBMVETH_RXQ_TOGGLE_SHIFT 31
	#define IBMVETH_RXQ_VALID 0x40000000
	#define IBMVETH_RXQ_LRG_PKT 0x04000000
	#define IBMVETH_RXQ_NO_CSUM 0x02000000
	#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
	#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF

	__be32 length;
	/* correlator is only used by the OS, no need to byte swap */
	u64 correlator;
	};

	#endif /* _IBMVETH_H */