1/*
  2 * IBM Power Virtual Ethernet Device Driver
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License as published by
  6 * the Free Software Foundation; either version 2 of the License, or
  7 * (at your option) any later version.
  8 *
  9 * This program is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 * GNU General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU General Public License
 15 * along with this program; if not, write to the Free Software
 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 17 *
 18 * Copyright (C) IBM Corporation, 2003, 2010
 19 *
 20 * Authors: Dave Larson <larson1@us.ibm.com>
 21 *	    Santiago Leon <santil@linux.vnet.ibm.com>
 22 *	    Brian King <brking@linux.vnet.ibm.com>
 23 *	    Robert Jennings <rcj@linux.vnet.ibm.com>
 24 *	    Anton Blanchard <anton@au.ibm.com>
 25 */
 26
 27#ifndef _IBMVETH_H
 28#define _IBMVETH_H
 29
 30/* constants for H_MULTICAST_CTRL */
 31#define IbmVethMcastReceptionModifyBit     0x80000UL
 32#define IbmVethMcastReceptionEnableBit     0x20000UL
 33#define IbmVethMcastFilterModifyBit        0x40000UL
 34#define IbmVethMcastFilterEnableBit        0x10000UL
 35
 36#define IbmVethMcastEnableRecv       (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
 37#define IbmVethMcastDisableRecv      (IbmVethMcastReceptionModifyBit)
 38#define IbmVethMcastEnableFiltering  (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
 39#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
 40#define IbmVethMcastAddFilter        0x1UL
 41#define IbmVethMcastRemoveFilter     0x2UL
 42#define IbmVethMcastClearFilterTable 0x3UL
 43
 44#define IBMVETH_ILLAN_PADDED_PKT_CSUM	0x0000000000002000UL
 45#define IBMVETH_ILLAN_TRUNK_PRI_MASK	0x0000000000000F00UL
 46#define IBMVETH_ILLAN_IPV6_TCP_CSUM		0x0000000000000004UL
 47#define IBMVETH_ILLAN_IPV4_TCP_CSUM		0x0000000000000002UL
 48#define IBMVETH_ILLAN_ACTIVE_TRUNK		0x0000000000000001UL
 49
 50/* hcall macros */
 51#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
 52  plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
 53
 54#define h_free_logical_lan(ua) \
 55  plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
 56
 57#define h_add_logical_lan_buffer(ua, buf) \
 58  plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
 59
 60static inline long h_send_logical_lan(unsigned long unit_address,
 61		unsigned long desc1, unsigned long desc2, unsigned long desc3,
 62		unsigned long desc4, unsigned long desc5, unsigned long desc6,
 63		unsigned long corellator_in, unsigned long *corellator_out)
 64{
 65	long rc;
 66	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
 67
 68	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
 69			desc2, desc3, desc4, desc5, desc6, corellator_in);
 70
 71	*corellator_out = retbuf[0];
 72
 73	return rc;
 74}
 75
 76static inline long h_illan_attributes(unsigned long unit_address,
 77				      unsigned long reset_mask, unsigned long set_mask,
 78				      unsigned long *ret_attributes)
 79{
 80	long rc;
 81	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 82
 83	rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
 84			 reset_mask, set_mask);
 85
 86	*ret_attributes = retbuf[0];
 87
 88	return rc;
 89}
 90
 91#define h_multicast_ctrl(ua, cmd, mac) \
 92  plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
 93
 94#define h_change_logical_lan_mac(ua, mac) \
 95  plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
 96
 97#define IBMVETH_NUM_BUFF_POOLS 5
 98#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
 99#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
100#define IBMVETH_MIN_MTU 68
101#define IBMVETH_MAX_POOL_COUNT 4096
102#define IBMVETH_BUFF_LIST_SIZE 4096
103#define IBMVETH_FILT_LIST_SIZE 4096
104#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
105
106static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
107static int pool_count[] = { 256, 512, 256, 256, 256 };
108static int pool_active[] = { 1, 1, 0, 0, 0};
109
110#define IBM_VETH_INVALID_MAP ((u16)0xffff)
111
112struct ibmveth_buff_pool {
113    u32 size;
114    u32 index;
115    u32 buff_size;
116    u32 threshold;
117    atomic_t available;
118    u32 consumer_index;
119    u32 producer_index;
120    u16 *free_map;
121    dma_addr_t *dma_addr;
122    struct sk_buff **skbuff;
123    int active;
124    struct kobject kobj;
125};
126
127struct ibmveth_rx_q {
128    u64        index;
129    u64        num_slots;
130    u64        toggle;
131    dma_addr_t queue_dma;
132    u32        queue_len;
133    struct ibmveth_rx_q_entry *queue_addr;
134};
135
136struct ibmveth_adapter {
137    struct vio_dev *vdev;
138    struct net_device *netdev;
139    struct napi_struct napi;
140    struct net_device_stats stats;
141    unsigned int mcastFilterSize;
142    unsigned long mac_addr;
143    void * buffer_list_addr;
144    void * filter_list_addr;
145    dma_addr_t buffer_list_dma;
146    dma_addr_t filter_list_dma;
147    struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
148    struct ibmveth_rx_q rx_queue;
149    int pool_config;
150    int rx_csum;
151    void *bounce_buffer;
152    dma_addr_t bounce_buffer_dma;
153
154    u64 fw_ipv6_csum_support;
155    u64 fw_ipv4_csum_support;
156    /* adapter specific stats */
157    u64 replenish_task_cycles;
158    u64 replenish_no_mem;
159    u64 replenish_add_buff_failure;
160    u64 replenish_add_buff_success;
161    u64 rx_invalid_buffer;
162    u64 rx_no_buffer;
163    u64 tx_map_failed;
164    u64 tx_send_failed;
165};
166
167struct ibmveth_buf_desc_fields {
168	u32 flags_len;
169#define IBMVETH_BUF_VALID	0x80000000
170#define IBMVETH_BUF_TOGGLE	0x40000000
171#define IBMVETH_BUF_NO_CSUM	0x02000000
172#define IBMVETH_BUF_CSUM_GOOD	0x01000000
173#define IBMVETH_BUF_LEN_MASK	0x00FFFFFF
174	u32 address;
175};
176
177union ibmveth_buf_desc {
178    u64 desc;
179    struct ibmveth_buf_desc_fields fields;
180};
181
182struct ibmveth_rx_q_entry {
183	u32 flags_off;
184#define IBMVETH_RXQ_TOGGLE		0x80000000
185#define IBMVETH_RXQ_TOGGLE_SHIFT	31
186#define IBMVETH_RXQ_VALID		0x40000000
187#define IBMVETH_RXQ_NO_CSUM		0x02000000
188#define IBMVETH_RXQ_CSUM_GOOD		0x01000000
189#define IBMVETH_RXQ_OFF_MASK		0x0000FFFF
190
191	u32 length;
192	u64 correlator;
193};
194
195#endif /* _IBMVETH_H */