[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / ibm / 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_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 */
Commit	Line	Data
9d348af4 SL	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
0ab75ae8	15	* along with this program; if not, see <http://www.gnu.org/licenses/>.
9d348af4 SL	16	*
	17	* Copyright (C) IBM Corporation, 2003, 2010
	18	*
	19	* Authors: Dave Larson <larson1@us.ibm.com>
	20	* Santiago Leon <santil@linux.vnet.ibm.com>
	21	* Brian King <brking@linux.vnet.ibm.com>
	22	* Robert Jennings <rcj@linux.vnet.ibm.com>
	23	* Anton Blanchard <anton@au.ibm.com>
	24	*/
1da177e4 LT	25
	26	#ifndef _IBMVETH_H
	27	#define _IBMVETH_H
	28
1da177e4 LT	29	/* constants for H_MULTICAST_CTRL */
	30	#define IbmVethMcastReceptionModifyBit 0x80000UL
	31	#define IbmVethMcastReceptionEnableBit 0x20000UL
	32	#define IbmVethMcastFilterModifyBit 0x40000UL
	33	#define IbmVethMcastFilterEnableBit 0x10000UL
	34
	35	#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit \| IbmVethMcastReceptionEnableBit)
	36	#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
	37	#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit \| IbmVethMcastFilterEnableBit)
	38	#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
	39	#define IbmVethMcastAddFilter 0x1UL
	40	#define IbmVethMcastRemoveFilter 0x2UL
	41	#define IbmVethMcastClearFilterTable 0x3UL
	42
07e6a97d TF	43	#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL
07e6a97d TF	44	#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL
ff5bfc35 SR	45	#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL
	46	#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL
	47	#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL
	48	#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL
	49	#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL
79ef4a4d	50
1da177e4 LT	51	/* hcall macros */
	52	#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
	53	plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
	54
	55	#define h_free_logical_lan(ua) \
	56	plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
	57
	58	#define h_add_logical_lan_buffer(ua, buf) \
	59	plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
	60
b9377ffc AB	61	static inline long h_send_logical_lan(unsigned long unit_address,
	62	unsigned long desc1, unsigned long desc2, unsigned long desc3,
	63	unsigned long desc4, unsigned long desc5, unsigned long desc6,
07e6a97d TF	64	unsigned long corellator_in, unsigned long *corellator_out,
07e6a97d TF	65	unsigned long mss, unsigned long large_send_support)
b9377ffc AB	66	{
	67	long rc;
	68	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
	69
07e6a97d TF	70	if (large_send_support)
	71	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
	72	desc1, desc2, desc3, desc4, desc5, desc6,
	73	corellator_in, mss);
	74	else
	75	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
	76	desc1, desc2, desc3, desc4, desc5, desc6,
	77	corellator_in);
b9377ffc AB	78
	79	*corellator_out = retbuf[0];
	80
	81	return rc;
	82	}
1da177e4	83
f4ff2872 BK	84	static inline long h_illan_attributes(unsigned long unit_address,
	85	unsigned long reset_mask, unsigned long set_mask,
	86	unsigned long *ret_attributes)
	87	{
	88	long rc;
	89	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	90
	91	rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
	92	reset_mask, set_mask);
	93
	94	*ret_attributes = retbuf[0];
	95
	96	return rc;
	97	}
	98
1da177e4 LT	99	#define h_multicast_ctrl(ua, cmd, mac) \
	100	plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
	101
	102	#define h_change_logical_lan_mac(ua, mac) \
	103	plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
	104
517e80e6	105	#define IBMVETH_NUM_BUFF_POOLS 5
1096d63d	106	#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
b6d35182	107	#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
517e80e6	108	#define IBMVETH_MIN_MTU 68
860f242e	109	#define IBMVETH_MAX_POOL_COUNT 4096
1096d63d RJ	110	#define IBMVETH_BUFF_LIST_SIZE 4096
1096d63d RJ	111	#define IBMVETH_FILT_LIST_SIZE 4096
860f242e	112	#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
b6d35182	113
b6d35182	114	static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
c033a6d1	115	static int pool_count[] = { 256, 512, 256, 256, 256 };
cd7c7ec3 TF	116	static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
cd7c7ec3 TF	117	static int pool_active[] = { 1, 1, 0, 0, 1};
1da177e4 LT	118
	119	#define IBM_VETH_INVALID_MAP ((u16)0xffff)
	120
	121	struct ibmveth_buff_pool {
	122	u32 size;
	123	u32 index;
	124	u32 buff_size;
	125	u32 threshold;
	126	atomic_t available;
	127	u32 consumer_index;
	128	u32 producer_index;
	129	u16 *free_map;
	130	dma_addr_t *dma_addr;
	131	struct sk_buff **skbuff;
b6d35182	132	int active;
860f242e	133	struct kobject kobj;
1da177e4 LT	134	};
	135
	136	struct ibmveth_rx_q {
	137	u64 index;
	138	u64 num_slots;
	139	u64 toggle;
	140	dma_addr_t queue_dma;
	141	u32 queue_len;
	142	struct ibmveth_rx_q_entry *queue_addr;
	143	};
	144
	145	struct ibmveth_adapter {
	146	struct vio_dev *vdev;
	147	struct net_device *netdev;
bea3348e	148	struct napi_struct napi;
1da177e4 LT	149	struct net_device_stats stats;
1da177e4 LT	150	unsigned int mcastFilterSize;
1da177e4 LT	151	void * buffer_list_addr;
	152	void * filter_list_addr;
	153	dma_addr_t buffer_list_dma;
	154	dma_addr_t filter_list_dma;
517e80e6	155	struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
1da177e4	156	struct ibmveth_rx_q rx_queue;
860f242e	157	int pool_config;
5fc7e01c	158	int rx_csum;
07e6a97d	159	int large_send;
1096d63d RJ	160	void *bounce_buffer;
1096d63d RJ	161	dma_addr_t bounce_buffer_dma;
1da177e4	162
ab78df75 SL	163	u64 fw_ipv6_csum_support;
ab78df75 SL	164	u64 fw_ipv4_csum_support;
07e6a97d	165	u64 fw_large_send_support;
1da177e4 LT	166	/* adapter specific stats */
	167	u64 replenish_task_cycles;
	168	u64 replenish_no_mem;
	169	u64 replenish_add_buff_failure;
	170	u64 replenish_add_buff_success;
	171	u64 rx_invalid_buffer;
	172	u64 rx_no_buffer;
1da177e4 LT	173	u64 tx_map_failed;
1da177e4 LT	174	u64 tx_send_failed;
8641dd85	175	u64 tx_large_packets;
9c7e8bc5	176	u64 rx_large_packets;
1da177e4 LT	177	};
1da177e4 LT	178
0b536be7 AB	179	/*
	180	* We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
	181	* so we don't need to byteswap the two elements. However since we use
	182	* a union (ibmveth_buf_desc) to convert from the struct to a u64 we
	183	* do end up with endian specific ordering of the elements and that
	184	* needs correcting.
	185	*/
d7fbeba6	186	struct ibmveth_buf_desc_fields {
0b536be7 AB	187	#ifdef __BIG_ENDIAN
	188	u32 flags_len;
	189	u32 address;
	190	#else
	191	u32 address;
79ef4a4d	192	u32 flags_len;
0b536be7	193	#endif
79ef4a4d BK	194	#define IBMVETH_BUF_VALID 0x80000000
79ef4a4d BK	195	#define IBMVETH_BUF_TOGGLE 0x40000000
07e6a97d	196	#define IBMVETH_BUF_LRG_SND 0x04000000
79ef4a4d BK	197	#define IBMVETH_BUF_NO_CSUM 0x02000000
	198	#define IBMVETH_BUF_CSUM_GOOD 0x01000000
	199	#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
1da177e4 LT	200	};
	201
	202	union ibmveth_buf_desc {
d7fbeba6	203	u64 desc;
1da177e4 LT	204	struct ibmveth_buf_desc_fields fields;
	205	};
	206
	207	struct ibmveth_rx_q_entry {
0b536be7	208	__be32 flags_off;
79ef4a4d BK	209	#define IBMVETH_RXQ_TOGGLE 0x80000000
	210	#define IBMVETH_RXQ_TOGGLE_SHIFT 31
	211	#define IBMVETH_RXQ_VALID 0x40000000
	212	#define IBMVETH_RXQ_NO_CSUM 0x02000000
	213	#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
	214	#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
	215
0b536be7 AB	216	__be32 length;
0b536be7 AB	217	/* correlator is only used by the OS, no need to byte swap */
79ef4a4d	218	u64 correlator;
1da177e4 LT	219	};
	220
	221	#endif /* _IBMVETH_H */