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cxgb4vf: Add core T4 PCI-E SR-IOV Virtual Function hardware definitio…
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…ns and device communication code

Add core T4 PCI-E SR-IOV Virtual Function hardware definitions and device
communication code.

Signed-off-by: Casey Leedom
Signed-off-by: David S. Miller <davem@davemloft.net>
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Casey Leedom authored and David S. Miller committed Jun 29, 2010
1 parent 7ee9ff9 commit 16f8bd4
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273 changes: 273 additions & 0 deletions drivers/net/cxgb4vf/t4vf_common.h
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/*
* This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
* driver for Linux.
*
* Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* 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 notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/

#ifndef __T4VF_COMMON_H__
#define __T4VF_COMMON_H__

#include "../cxgb4/t4fw_api.h"

/*
* The "len16" field of a Firmware Command Structure ...
*/
#define FW_LEN16(fw_struct) FW_CMD_LEN16(sizeof(fw_struct) / 16)

/*
* Per-VF statistics.
*/
struct t4vf_port_stats {
/*
* TX statistics.
*/
u64 tx_bcast_bytes; /* broadcast */
u64 tx_bcast_frames;
u64 tx_mcast_bytes; /* multicast */
u64 tx_mcast_frames;
u64 tx_ucast_bytes; /* unicast */
u64 tx_ucast_frames;
u64 tx_drop_frames; /* TX dropped frames */
u64 tx_offload_bytes; /* offload */
u64 tx_offload_frames;

/*
* RX statistics.
*/
u64 rx_bcast_bytes; /* broadcast */
u64 rx_bcast_frames;
u64 rx_mcast_bytes; /* multicast */
u64 rx_mcast_frames;
u64 rx_ucast_bytes;
u64 rx_ucast_frames; /* unicast */

u64 rx_err_frames; /* RX error frames */
};

/*
* Per-"port" (Virtual Interface) link configuration ...
*/
struct link_config {
unsigned int supported; /* link capabilities */
unsigned int advertising; /* advertised capabilities */
unsigned short requested_speed; /* speed user has requested */
unsigned short speed; /* actual link speed */
unsigned char requested_fc; /* flow control user has requested */
unsigned char fc; /* actual link flow control */
unsigned char autoneg; /* autonegotiating? */
unsigned char link_ok; /* link up? */
};

enum {
PAUSE_RX = 1 << 0,
PAUSE_TX = 1 << 1,
PAUSE_AUTONEG = 1 << 2
};

/*
* General device parameters ...
*/
struct dev_params {
u32 fwrev; /* firmware version */
u32 tprev; /* TP Microcode Version */
};

/*
* Scatter Gather Engine parameters. These are almost all determined by the
* Physical Function Driver. We just need to grab them to see within which
* environment we're playing ...
*/
struct sge_params {
u32 sge_control; /* padding, boundaries, lengths, etc. */
u32 sge_host_page_size; /* RDMA page sizes */
u32 sge_queues_per_page; /* RDMA queues/page */
u32 sge_user_mode_limits; /* limits for BAR2 user mode accesses */
u32 sge_fl_buffer_size[16]; /* free list buffer sizes */
u32 sge_ingress_rx_threshold; /* RX counter interrupt threshold[4] */
u32 sge_timer_value_0_and_1; /* interrupt coalescing timer values */
u32 sge_timer_value_2_and_3;
u32 sge_timer_value_4_and_5;
};

/*
* Vital Product Data parameters.
*/
struct vpd_params {
u32 cclk; /* Core Clock (KHz) */
};

/*
* Global Receive Side Scaling (RSS) parameters in host-native format.
*/
struct rss_params {
unsigned int mode; /* RSS mode */
union {
struct {
int synmapen:1; /* SYN Map Enable */
int syn4tupenipv6:1; /* enable hashing 4-tuple IPv6 SYNs */
int syn2tupenipv6:1; /* enable hashing 2-tuple IPv6 SYNs */
int syn4tupenipv4:1; /* enable hashing 4-tuple IPv4 SYNs */
int syn2tupenipv4:1; /* enable hashing 2-tuple IPv4 SYNs */
int ofdmapen:1; /* Offload Map Enable */
int tnlmapen:1; /* Tunnel Map Enable */
int tnlalllookup:1; /* Tunnel All Lookup */
int hashtoeplitz:1; /* use Toeplitz hash */
} basicvirtual;
} u;
};

/*
* Virtual Interface RSS Configuration in host-native format.
*/
union rss_vi_config {
struct {
u16 defaultq; /* Ingress Queue ID for !tnlalllookup */
int ip6fourtupen:1; /* hash 4-tuple IPv6 ingress packets */
int ip6twotupen:1; /* hash 2-tuple IPv6 ingress packets */
int ip4fourtupen:1; /* hash 4-tuple IPv4 ingress packets */
int ip4twotupen:1; /* hash 2-tuple IPv4 ingress packets */
int udpen; /* hash 4-tuple UDP ingress packets */
} basicvirtual;
};

/*
* Maximum resources provisioned for a PCI VF.
*/
struct vf_resources {
unsigned int nvi; /* N virtual interfaces */
unsigned int neq; /* N egress Qs */
unsigned int nethctrl; /* N egress ETH or CTRL Qs */
unsigned int niqflint; /* N ingress Qs/w free list(s) & intr */
unsigned int niq; /* N ingress Qs */
unsigned int tc; /* PCI-E traffic class */
unsigned int pmask; /* port access rights mask */
unsigned int nexactf; /* N exact MPS filters */
unsigned int r_caps; /* read capabilities */
unsigned int wx_caps; /* write/execute capabilities */
};

/*
* Per-"adapter" (Virtual Function) parameters.
*/
struct adapter_params {
struct dev_params dev; /* general device parameters */
struct sge_params sge; /* Scatter Gather Engine */
struct vpd_params vpd; /* Vital Product Data */
struct rss_params rss; /* Receive Side Scaling */
struct vf_resources vfres; /* Virtual Function Resource limits */
u8 nports; /* # of Ethernet "ports" */
};

#include "adapter.h"

#ifndef PCI_VENDOR_ID_CHELSIO
# define PCI_VENDOR_ID_CHELSIO 0x1425
#endif

#define for_each_port(adapter, iter) \
for (iter = 0; iter < (adapter)->params.nports; iter++)

static inline bool is_10g_port(const struct link_config *lc)
{
return (lc->supported & SUPPORTED_10000baseT_Full) != 0;
}

static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
{
return adapter->params.vpd.cclk / 1000;
}

static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
unsigned int us)
{
return (us * adapter->params.vpd.cclk) / 1000;
}

static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
unsigned int ticks)
{
return (ticks * 1000) / adapter->params.vpd.cclk;
}

int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);

static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
int size, void *rpl)
{
return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
}

static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
int size, void *rpl)
{
return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
}

int __devinit t4vf_wait_dev_ready(struct adapter *);
int __devinit t4vf_port_init(struct adapter *, int);

int t4vf_query_params(struct adapter *, unsigned int, const u32 *, u32 *);
int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);

int t4vf_get_sge_params(struct adapter *);
int t4vf_get_vpd_params(struct adapter *);
int t4vf_get_dev_params(struct adapter *);
int t4vf_get_rss_glb_config(struct adapter *);
int t4vf_get_vfres(struct adapter *);

int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
union rss_vi_config *);
int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
union rss_vi_config *);
int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
const u16 *, int);

int t4vf_alloc_vi(struct adapter *, int);
int t4vf_free_vi(struct adapter *, int);
int t4vf_enable_vi(struct adapter *, unsigned int, bool, bool);
int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);

int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
bool);
int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
const u8 **, u16 *, u64 *, bool);
int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);

int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
unsigned int);
int t4vf_eth_eq_free(struct adapter *, unsigned int);

int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);

#endif /* __T4VF_COMMON_H__ */
121 changes: 121 additions & 0 deletions drivers/net/cxgb4vf/t4vf_defs.h
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/*
* This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
* driver for Linux.
*
* Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* 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 notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/

#ifndef __T4VF_DEFS_H__
#define __T4VF_DEFS_H__

#include "../cxgb4/t4_regs.h"

/*
* The VF Register Map.
*
* The Scatter Gather Engine (SGE), Multiport Support module (MPS), PIO Local
* bus module (PL) and CPU Interface Module (CIM) components are mapped via
* the Slice to Module Map Table (see below) in the Physical Function Register
* Map. The Mail Box Data (MBDATA) range is mapped via the PCI-E Mailbox Base
* and Offset registers in the PF Register Map. The MBDATA base address is
* quite constrained as it determines the Mailbox Data addresses for both PFs
* and VFs, and therefore must fit in both the VF and PF Register Maps without
* overlapping other registers.
*/
#define T4VF_SGE_BASE_ADDR 0x0000
#define T4VF_MPS_BASE_ADDR 0x0100
#define T4VF_PL_BASE_ADDR 0x0200
#define T4VF_MBDATA_BASE_ADDR 0x0240
#define T4VF_CIM_BASE_ADDR 0x0300

#define T4VF_REGMAP_START 0x0000
#define T4VF_REGMAP_SIZE 0x0400

/*
* There's no hardware limitation which requires that the addresses of the
* Mailbox Data in the fixed CIM PF map and the programmable VF map must
* match. However, it's a useful convention ...
*/
#if T4VF_MBDATA_BASE_ADDR != CIM_PF_MAILBOX_DATA
#error T4VF_MBDATA_BASE_ADDR must match CIM_PF_MAILBOX_DATA!
#endif

/*
* Virtual Function "Slice to Module Map Table" definitions.
*
* This table allows us to map subsets of the various module register sets
* into the T4VF Register Map. Each table entry identifies the index of the
* module whose registers are being mapped, the offset within the module's
* register set that the mapping should start at, the limit of the mapping,
* and the offset within the T4VF Register Map to which the module's registers
* are being mapped. All addresses and qualtities are in terms of 32-bit
* words. The "limit" value is also in terms of 32-bit words and is equal to
* the last address mapped in the T4VF Register Map 1 (i.e. it's a "<="
* relation rather than a "<").
*/
#define T4VF_MOD_MAP(module, index, first, last) \
T4VF_MOD_MAP_##module##_INDEX = (index), \
T4VF_MOD_MAP_##module##_FIRST = (first), \
T4VF_MOD_MAP_##module##_LAST = (last), \
T4VF_MOD_MAP_##module##_OFFSET = ((first)/4), \
T4VF_MOD_MAP_##module##_BASE = \
(T4VF_##module##_BASE_ADDR/4 + (first)/4), \
T4VF_MOD_MAP_##module##_LIMIT = \
(T4VF_##module##_BASE_ADDR/4 + (last)/4),

#define SGE_VF_KDOORBELL 0x0
#define SGE_VF_GTS 0x4
#define MPS_VF_CTL 0x0
#define MPS_VF_STAT_RX_VF_ERR_FRAMES_H 0xfc
#define PL_VF_WHOAMI 0x0
#define CIM_VF_EXT_MAILBOX_CTRL 0x0
#define CIM_VF_EXT_MAILBOX_STATUS 0x4

enum {
T4VF_MOD_MAP(SGE, 2, SGE_VF_KDOORBELL, SGE_VF_GTS)
T4VF_MOD_MAP(MPS, 0, MPS_VF_CTL, MPS_VF_STAT_RX_VF_ERR_FRAMES_H)
T4VF_MOD_MAP(PL, 3, PL_VF_WHOAMI, PL_VF_WHOAMI)
T4VF_MOD_MAP(CIM, 1, CIM_VF_EXT_MAILBOX_CTRL, CIM_VF_EXT_MAILBOX_STATUS)
};

/*
* There isn't a Slice to Module Map Table entry for the Mailbox Data
* registers, but it's convenient to use similar names as above. There are 8
* little-endian 64-bit Mailbox Data registers. Note that the "instances"
* value below is in terms of 32-bit words which matches the "word" addressing
* space we use above for the Slice to Module Map Space.
*/
#define NUM_CIM_VF_MAILBOX_DATA_INSTANCES 16

#define T4VF_MBDATA_FIRST 0
#define T4VF_MBDATA_LAST ((NUM_CIM_VF_MAILBOX_DATA_INSTANCES-1)*4)

#endif /* __T4T4VF_DEFS_H__ */
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