[linux-2.6-block.git] / drivers / net / ethernet / ibm / ibmveth.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * IBM Power Virtual Ethernet Device Driver
 *
 * 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;
    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;
    bool is_active_trunk;
    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 */
Commit	Line	Data
1ccea77e	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
9d348af4 SL	2	/*
	3	* IBM Power Virtual Ethernet Device Driver
	4	*
9d348af4 SL	5	* Copyright (C) IBM Corporation, 2003, 2010
	6	*
	7	* Authors: Dave Larson <larson1@us.ibm.com>
	8	* Santiago Leon <santil@linux.vnet.ibm.com>
	9	* Brian King <brking@linux.vnet.ibm.com>
	10	* Robert Jennings <rcj@linux.vnet.ibm.com>
	11	* Anton Blanchard <anton@au.ibm.com>
	12	*/
1da177e4 LT	13
	14	#ifndef _IBMVETH_H
	15	#define _IBMVETH_H
	16
1da177e4 LT	17	/* constants for H_MULTICAST_CTRL */
	18	#define IbmVethMcastReceptionModifyBit 0x80000UL
	19	#define IbmVethMcastReceptionEnableBit 0x20000UL
	20	#define IbmVethMcastFilterModifyBit 0x40000UL
	21	#define IbmVethMcastFilterEnableBit 0x10000UL
	22
	23	#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit \| IbmVethMcastReceptionEnableBit)
	24	#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
	25	#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit \| IbmVethMcastFilterEnableBit)
	26	#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
	27	#define IbmVethMcastAddFilter 0x1UL
	28	#define IbmVethMcastRemoveFilter 0x2UL
	29	#define IbmVethMcastClearFilterTable 0x3UL
	30
07e6a97d TF	31	#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL
07e6a97d TF	32	#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL
ff5bfc35 SR	33	#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL
	34	#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL
	35	#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL
	36	#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL
	37	#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL
79ef4a4d	38
1da177e4 LT	39	/* hcall macros */
	40	#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
	41	plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
	42
	43	#define h_free_logical_lan(ua) \
	44	plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
	45
	46	#define h_add_logical_lan_buffer(ua, buf) \
	47	plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
	48
b9377ffc AB	49	static inline long h_send_logical_lan(unsigned long unit_address,
	50	unsigned long desc1, unsigned long desc2, unsigned long desc3,
	51	unsigned long desc4, unsigned long desc5, unsigned long desc6,
07e6a97d TF	52	unsigned long corellator_in, unsigned long *corellator_out,
07e6a97d TF	53	unsigned long mss, unsigned long large_send_support)
b9377ffc AB	54	{
	55	long rc;
	56	unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
	57
07e6a97d TF	58	if (large_send_support)
	59	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
	60	desc1, desc2, desc3, desc4, desc5, desc6,
	61	corellator_in, mss);
	62	else
	63	rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
	64	desc1, desc2, desc3, desc4, desc5, desc6,
	65	corellator_in);
b9377ffc AB	66
	67	*corellator_out = retbuf[0];
	68
	69	return rc;
	70	}
1da177e4	71
f4ff2872 BK	72	static inline long h_illan_attributes(unsigned long unit_address,
	73	unsigned long reset_mask, unsigned long set_mask,
	74	unsigned long *ret_attributes)
	75	{
	76	long rc;
	77	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
	78
	79	rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
	80	reset_mask, set_mask);
	81
	82	*ret_attributes = retbuf[0];
	83
	84	return rc;
	85	}
	86
1da177e4 LT	87	#define h_multicast_ctrl(ua, cmd, mac) \
	88	plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
	89
	90	#define h_change_logical_lan_mac(ua, mac) \
	91	plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
	92
517e80e6	93	#define IBMVETH_NUM_BUFF_POOLS 5
1096d63d	94	#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
b6d35182	95	#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
517e80e6	96	#define IBMVETH_MIN_MTU 68
860f242e	97	#define IBMVETH_MAX_POOL_COUNT 4096
1096d63d RJ	98	#define IBMVETH_BUFF_LIST_SIZE 4096
1096d63d RJ	99	#define IBMVETH_FILT_LIST_SIZE 4096
860f242e	100	#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
b6d35182	101
b6d35182	102	static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
c033a6d1	103	static int pool_count[] = { 256, 512, 256, 256, 256 };
cd7c7ec3 TF	104	static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
cd7c7ec3 TF	105	static int pool_active[] = { 1, 1, 0, 0, 1};
1da177e4 LT	106
	107	#define IBM_VETH_INVALID_MAP ((u16)0xffff)
	108
	109	struct ibmveth_buff_pool {
	110	u32 size;
	111	u32 index;
	112	u32 buff_size;
	113	u32 threshold;
	114	atomic_t available;
	115	u32 consumer_index;
	116	u32 producer_index;
	117	u16 *free_map;
	118	dma_addr_t *dma_addr;
	119	struct sk_buff **skbuff;
b6d35182	120	int active;
860f242e	121	struct kobject kobj;
1da177e4 LT	122	};
	123
	124	struct ibmveth_rx_q {
	125	u64 index;
	126	u64 num_slots;
	127	u64 toggle;
	128	dma_addr_t queue_dma;
	129	u32 queue_len;
	130	struct ibmveth_rx_q_entry *queue_addr;
	131	};
	132
	133	struct ibmveth_adapter {
	134	struct vio_dev *vdev;
	135	struct net_device *netdev;
bea3348e	136	struct napi_struct napi;
1da177e4	137	unsigned int mcastFilterSize;
1da177e4 LT	138	void * buffer_list_addr;
	139	void * filter_list_addr;
	140	dma_addr_t buffer_list_dma;
	141	dma_addr_t filter_list_dma;
517e80e6	142	struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
1da177e4	143	struct ibmveth_rx_q rx_queue;
860f242e	144	int pool_config;
5fc7e01c	145	int rx_csum;
07e6a97d	146	int large_send;
66aa0678	147	bool is_active_trunk;
1096d63d RJ	148	void *bounce_buffer;
1096d63d RJ	149	dma_addr_t bounce_buffer_dma;
1da177e4	150
ab78df75 SL	151	u64 fw_ipv6_csum_support;
ab78df75 SL	152	u64 fw_ipv4_csum_support;
07e6a97d	153	u64 fw_large_send_support;
1da177e4 LT	154	/* adapter specific stats */
	155	u64 replenish_task_cycles;
	156	u64 replenish_no_mem;
	157	u64 replenish_add_buff_failure;
	158	u64 replenish_add_buff_success;
	159	u64 rx_invalid_buffer;
	160	u64 rx_no_buffer;
1da177e4 LT	161	u64 tx_map_failed;
1da177e4 LT	162	u64 tx_send_failed;
8641dd85	163	u64 tx_large_packets;
9c7e8bc5	164	u64 rx_large_packets;
1da177e4 LT	165	};
1da177e4 LT	166
0b536be7 AB	167	/*
	168	* We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
	169	* so we don't need to byteswap the two elements. However since we use
	170	* a union (ibmveth_buf_desc) to convert from the struct to a u64 we
	171	* do end up with endian specific ordering of the elements and that
	172	* needs correcting.
	173	*/
d7fbeba6	174	struct ibmveth_buf_desc_fields {
0b536be7 AB	175	#ifdef __BIG_ENDIAN
	176	u32 flags_len;
	177	u32 address;
	178	#else
	179	u32 address;
79ef4a4d	180	u32 flags_len;
0b536be7	181	#endif
79ef4a4d BK	182	#define IBMVETH_BUF_VALID 0x80000000
79ef4a4d BK	183	#define IBMVETH_BUF_TOGGLE 0x40000000
07e6a97d	184	#define IBMVETH_BUF_LRG_SND 0x04000000
79ef4a4d BK	185	#define IBMVETH_BUF_NO_CSUM 0x02000000
	186	#define IBMVETH_BUF_CSUM_GOOD 0x01000000
	187	#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
1da177e4 LT	188	};
	189
	190	union ibmveth_buf_desc {
d7fbeba6	191	u64 desc;
1da177e4 LT	192	struct ibmveth_buf_desc_fields fields;
	193	};
	194
	195	struct ibmveth_rx_q_entry {
0b536be7	196	__be32 flags_off;
79ef4a4d BK	197	#define IBMVETH_RXQ_TOGGLE 0x80000000
	198	#define IBMVETH_RXQ_TOGGLE_SHIFT 31
	199	#define IBMVETH_RXQ_VALID 0x40000000
7b596738	200	#define IBMVETH_RXQ_LRG_PKT 0x04000000
79ef4a4d BK	201	#define IBMVETH_RXQ_NO_CSUM 0x02000000
	202	#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
	203	#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
	204
0b536be7 AB	205	__be32 length;
0b536be7 AB	206	/* correlator is only used by the OS, no need to byte swap */
79ef4a4d	207	u64 correlator;
1da177e4 LT	208	};
	209
	210	#endif /* _IBMVETH_H */