From f7917c009c28c941ba151ee66f04dc7f6a2e1e0b Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Thu, 7 Apr 2011 06:57:17 -0700 Subject: chelsio: Move the Chelsio drivers Moves the drivers for the Chelsio chipsets into drivers/net/ethernet/chelsio/ and the necessary Kconfig and Makefile changes. CC: Divy Le Ray CC: Dimitris Michailidis CC: Casey Leedom Signed-off-by: Jeff Kirsher --- drivers/net/cxgb4vf/adapter.h | 534 ------------------------------------------ 1 file changed, 534 deletions(-) delete mode 100644 drivers/net/cxgb4vf/adapter.h (limited to 'drivers/net/cxgb4vf/adapter.h') diff --git a/drivers/net/cxgb4vf/adapter.h b/drivers/net/cxgb4vf/adapter.h deleted file mode 100644 index 594334d5c71..00000000000 --- a/drivers/net/cxgb4vf/adapter.h +++ /dev/null @@ -1,534 +0,0 @@ -/* - * 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. - */ - -/* - * This file should not be included directly. Include t4vf_common.h instead. - */ - -#ifndef __CXGB4VF_ADAPTER_H__ -#define __CXGB4VF_ADAPTER_H__ - -#include -#include -#include -#include -#include -#include - -#include "../cxgb4/t4_hw.h" - -/* - * Constants of the implementation. - */ -enum { - MAX_NPORTS = 1, /* max # of "ports" */ - MAX_PORT_QSETS = 8, /* max # of Queue Sets / "port" */ - MAX_ETH_QSETS = MAX_NPORTS*MAX_PORT_QSETS, - - /* - * MSI-X interrupt index usage. - */ - MSIX_FW = 0, /* MSI-X index for firmware Q */ - MSIX_IQFLINT = 1, /* MSI-X index base for Ingress Qs */ - MSIX_EXTRAS = 1, - MSIX_ENTRIES = MAX_ETH_QSETS + MSIX_EXTRAS, - - /* - * The maximum number of Ingress and Egress Queues is determined by - * the maximum number of "Queue Sets" which we support plus any - * ancillary queues. Each "Queue Set" requires one Ingress Queue - * for RX Packet Ingress Event notifications and two Egress Queues for - * a Free List and an Ethernet TX list. - */ - INGQ_EXTRAS = 2, /* firmware event queue and */ - /* forwarded interrupts */ - MAX_INGQ = MAX_ETH_QSETS+INGQ_EXTRAS, - MAX_EGRQ = MAX_ETH_QSETS*2, -}; - -/* - * Forward structure definition references. - */ -struct adapter; -struct sge_eth_rxq; -struct sge_rspq; - -/* - * Per-"port" information. This is really per-Virtual Interface information - * but the use of the "port" nomanclature makes it easier to go back and forth - * between the PF and VF drivers ... - */ -struct port_info { - struct adapter *adapter; /* our adapter */ - u16 viid; /* virtual interface ID */ - s16 xact_addr_filt; /* index of our MAC address filter */ - u16 rss_size; /* size of VI's RSS table slice */ - u8 pidx; /* index into adapter port[] */ - u8 port_id; /* physical port ID */ - u8 nqsets; /* # of "Queue Sets" */ - u8 first_qset; /* index of first "Queue Set" */ - struct link_config link_cfg; /* physical port configuration */ -}; - -/* - * Scatter Gather Engine resources for the "adapter". Our ingress and egress - * queues are organized into "Queue Sets" with one ingress and one egress - * queue per Queue Set. These Queue Sets are aportionable between the "ports" - * (Virtual Interfaces). One extra ingress queue is used to receive - * asynchronous messages from the firmware. Note that the "Queue IDs" that we - * use here are really "Relative Queue IDs" which are returned as part of the - * firmware command to allocate queues. These queue IDs are relative to the - * absolute Queue ID base of the section of the Queue ID space allocated to - * the PF/VF. - */ - -/* - * SGE free-list queue state. - */ -struct rx_sw_desc; -struct sge_fl { - unsigned int avail; /* # of available RX buffers */ - unsigned int pend_cred; /* new buffers since last FL DB ring */ - unsigned int cidx; /* consumer index */ - unsigned int pidx; /* producer index */ - unsigned long alloc_failed; /* # of buffer allocation failures */ - unsigned long large_alloc_failed; - unsigned long starving; /* # of times FL was found starving */ - - /* - * Write-once/infrequently fields. - * ------------------------------- - */ - - unsigned int cntxt_id; /* SGE relative QID for the free list */ - unsigned int abs_id; /* SGE absolute QID for the free list */ - unsigned int size; /* capacity of free list */ - struct rx_sw_desc *sdesc; /* address of SW RX descriptor ring */ - __be64 *desc; /* address of HW RX descriptor ring */ - dma_addr_t addr; /* PCI bus address of hardware ring */ -}; - -/* - * An ingress packet gather list. - */ -struct pkt_gl { - skb_frag_t frags[MAX_SKB_FRAGS]; - void *va; /* virtual address of first byte */ - unsigned int nfrags; /* # of fragments */ - unsigned int tot_len; /* total length of fragments */ -}; - -typedef int (*rspq_handler_t)(struct sge_rspq *, const __be64 *, - const struct pkt_gl *); - -/* - * State for an SGE Response Queue. - */ -struct sge_rspq { - struct napi_struct napi; /* NAPI scheduling control */ - const __be64 *cur_desc; /* current descriptor in queue */ - unsigned int cidx; /* consumer index */ - u8 gen; /* current generation bit */ - u8 next_intr_params; /* holdoff params for next interrupt */ - int offset; /* offset into current FL buffer */ - - unsigned int unhandled_irqs; /* bogus interrupts */ - - /* - * Write-once/infrequently fields. - * ------------------------------- - */ - - u8 intr_params; /* interrupt holdoff parameters */ - u8 pktcnt_idx; /* interrupt packet threshold */ - u8 idx; /* queue index within its group */ - u16 cntxt_id; /* SGE rel QID for the response Q */ - u16 abs_id; /* SGE abs QID for the response Q */ - __be64 *desc; /* address of hardware response ring */ - dma_addr_t phys_addr; /* PCI bus address of ring */ - unsigned int iqe_len; /* entry size */ - unsigned int size; /* capcity of response Q */ - struct adapter *adapter; /* our adapter */ - struct net_device *netdev; /* associated net device */ - rspq_handler_t handler; /* the handler for this response Q */ -}; - -/* - * Ethernet queue statistics - */ -struct sge_eth_stats { - unsigned long pkts; /* # of ethernet packets */ - unsigned long lro_pkts; /* # of LRO super packets */ - unsigned long lro_merged; /* # of wire packets merged by LRO */ - unsigned long rx_cso; /* # of Rx checksum offloads */ - unsigned long vlan_ex; /* # of Rx VLAN extractions */ - unsigned long rx_drops; /* # of packets dropped due to no mem */ -}; - -/* - * State for an Ethernet Receive Queue. - */ -struct sge_eth_rxq { - struct sge_rspq rspq; /* Response Queue */ - struct sge_fl fl; /* Free List */ - struct sge_eth_stats stats; /* receive statistics */ -}; - -/* - * SGE Transmit Queue state. This contains all of the resources associated - * with the hardware status of a TX Queue which is a circular ring of hardware - * TX Descriptors. For convenience, it also contains a pointer to a parallel - * "Software Descriptor" array but we don't know anything about it here other - * than its type name. - */ -struct tx_desc { - /* - * Egress Queues are measured in units of SGE_EQ_IDXSIZE by the - * hardware: Sizes, Producer and Consumer indices, etc. - */ - __be64 flit[SGE_EQ_IDXSIZE/sizeof(__be64)]; -}; -struct tx_sw_desc; -struct sge_txq { - unsigned int in_use; /* # of in-use TX descriptors */ - unsigned int size; /* # of descriptors */ - unsigned int cidx; /* SW consumer index */ - unsigned int pidx; /* producer index */ - unsigned long stops; /* # of times queue has been stopped */ - unsigned long restarts; /* # of queue restarts */ - - /* - * Write-once/infrequently fields. - * ------------------------------- - */ - - unsigned int cntxt_id; /* SGE relative QID for the TX Q */ - unsigned int abs_id; /* SGE absolute QID for the TX Q */ - struct tx_desc *desc; /* address of HW TX descriptor ring */ - struct tx_sw_desc *sdesc; /* address of SW TX descriptor ring */ - struct sge_qstat *stat; /* queue status entry */ - dma_addr_t phys_addr; /* PCI bus address of hardware ring */ -}; - -/* - * State for an Ethernet Transmit Queue. - */ -struct sge_eth_txq { - struct sge_txq q; /* SGE TX Queue */ - struct netdev_queue *txq; /* associated netdev TX queue */ - unsigned long tso; /* # of TSO requests */ - unsigned long tx_cso; /* # of TX checksum offloads */ - unsigned long vlan_ins; /* # of TX VLAN insertions */ - unsigned long mapping_err; /* # of I/O MMU packet mapping errors */ -}; - -/* - * The complete set of Scatter/Gather Engine resources. - */ -struct sge { - /* - * Our "Queue Sets" ... - */ - struct sge_eth_txq ethtxq[MAX_ETH_QSETS]; - struct sge_eth_rxq ethrxq[MAX_ETH_QSETS]; - - /* - * Extra ingress queues for asynchronous firmware events and - * forwarded interrupts (when in MSI mode). - */ - struct sge_rspq fw_evtq ____cacheline_aligned_in_smp; - - struct sge_rspq intrq ____cacheline_aligned_in_smp; - spinlock_t intrq_lock; - - /* - * State for managing "starving Free Lists" -- Free Lists which have - * fallen below a certain threshold of buffers available to the - * hardware and attempts to refill them up to that threshold have - * failed. We have a regular "slow tick" timer process which will - * make periodic attempts to refill these starving Free Lists ... - */ - DECLARE_BITMAP(starving_fl, MAX_EGRQ); - struct timer_list rx_timer; - - /* - * State for cleaning up completed TX descriptors. - */ - struct timer_list tx_timer; - - /* - * Write-once/infrequently fields. - * ------------------------------- - */ - - u16 max_ethqsets; /* # of available Ethernet queue sets */ - u16 ethqsets; /* # of active Ethernet queue sets */ - u16 ethtxq_rover; /* Tx queue to clean up next */ - u16 timer_val[SGE_NTIMERS]; /* interrupt holdoff timer array */ - u8 counter_val[SGE_NCOUNTERS]; /* interrupt RX threshold array */ - - /* - * Reverse maps from Absolute Queue IDs to associated queue pointers. - * The absolute Queue IDs are in a compact range which start at a - * [potentially large] Base Queue ID. We perform the reverse map by - * first converting the Absolute Queue ID into a Relative Queue ID by - * subtracting off the Base Queue ID and then use a Relative Queue ID - * indexed table to get the pointer to the corresponding software - * queue structure. - */ - unsigned int egr_base; - unsigned int ingr_base; - void *egr_map[MAX_EGRQ]; - struct sge_rspq *ingr_map[MAX_INGQ]; -}; - -/* - * Utility macros to convert Absolute- to Relative-Queue indices and Egress- - * and Ingress-Queues. The EQ_MAP() and IQ_MAP() macros which provide - * pointers to Ingress- and Egress-Queues can be used as both L- and R-values - */ -#define EQ_IDX(s, abs_id) ((unsigned int)((abs_id) - (s)->egr_base)) -#define IQ_IDX(s, abs_id) ((unsigned int)((abs_id) - (s)->ingr_base)) - -#define EQ_MAP(s, abs_id) ((s)->egr_map[EQ_IDX(s, abs_id)]) -#define IQ_MAP(s, abs_id) ((s)->ingr_map[IQ_IDX(s, abs_id)]) - -/* - * Macro to iterate across Queue Sets ("rxq" is a historic misnomer). - */ -#define for_each_ethrxq(sge, iter) \ - for (iter = 0; iter < (sge)->ethqsets; iter++) - -/* - * Per-"adapter" (Virtual Function) information. - */ -struct adapter { - /* PCI resources */ - void __iomem *regs; - struct pci_dev *pdev; - struct device *pdev_dev; - - /* "adapter" resources */ - unsigned long registered_device_map; - unsigned long open_device_map; - unsigned long flags; - struct adapter_params params; - - /* queue and interrupt resources */ - struct { - unsigned short vec; - char desc[22]; - } msix_info[MSIX_ENTRIES]; - struct sge sge; - - /* Linux network device resources */ - struct net_device *port[MAX_NPORTS]; - const char *name; - unsigned int msg_enable; - - /* debugfs resources */ - struct dentry *debugfs_root; - - /* various locks */ - spinlock_t stats_lock; -}; - -enum { /* adapter flags */ - FULL_INIT_DONE = (1UL << 0), - USING_MSI = (1UL << 1), - USING_MSIX = (1UL << 2), - QUEUES_BOUND = (1UL << 3), -}; - -/* - * The following register read/write routine definitions are required by - * the common code. - */ - -/** - * t4_read_reg - read a HW register - * @adapter: the adapter - * @reg_addr: the register address - * - * Returns the 32-bit value of the given HW register. - */ -static inline u32 t4_read_reg(struct adapter *adapter, u32 reg_addr) -{ - return readl(adapter->regs + reg_addr); -} - -/** - * t4_write_reg - write a HW register - * @adapter: the adapter - * @reg_addr: the register address - * @val: the value to write - * - * Write a 32-bit value into the given HW register. - */ -static inline void t4_write_reg(struct adapter *adapter, u32 reg_addr, u32 val) -{ - writel(val, adapter->regs + reg_addr); -} - -#ifndef readq -static inline u64 readq(const volatile void __iomem *addr) -{ - return readl(addr) + ((u64)readl(addr + 4) << 32); -} - -static inline void writeq(u64 val, volatile void __iomem *addr) -{ - writel(val, addr); - writel(val >> 32, addr + 4); -} -#endif - -/** - * t4_read_reg64 - read a 64-bit HW register - * @adapter: the adapter - * @reg_addr: the register address - * - * Returns the 64-bit value of the given HW register. - */ -static inline u64 t4_read_reg64(struct adapter *adapter, u32 reg_addr) -{ - return readq(adapter->regs + reg_addr); -} - -/** - * t4_write_reg64 - write a 64-bit HW register - * @adapter: the adapter - * @reg_addr: the register address - * @val: the value to write - * - * Write a 64-bit value into the given HW register. - */ -static inline void t4_write_reg64(struct adapter *adapter, u32 reg_addr, - u64 val) -{ - writeq(val, adapter->regs + reg_addr); -} - -/** - * port_name - return the string name of a port - * @adapter: the adapter - * @pidx: the port index - * - * Return the string name of the selected port. - */ -static inline const char *port_name(struct adapter *adapter, int pidx) -{ - return adapter->port[pidx]->name; -} - -/** - * t4_os_set_hw_addr - store a port's MAC address in SW - * @adapter: the adapter - * @pidx: the port index - * @hw_addr: the Ethernet address - * - * Store the Ethernet address of the given port in SW. Called by the common - * code when it retrieves a port's Ethernet address from EEPROM. - */ -static inline void t4_os_set_hw_addr(struct adapter *adapter, int pidx, - u8 hw_addr[]) -{ - memcpy(adapter->port[pidx]->dev_addr, hw_addr, ETH_ALEN); - memcpy(adapter->port[pidx]->perm_addr, hw_addr, ETH_ALEN); -} - -/** - * netdev2pinfo - return the port_info structure associated with a net_device - * @dev: the netdev - * - * Return the struct port_info associated with a net_device - */ -static inline struct port_info *netdev2pinfo(const struct net_device *dev) -{ - return netdev_priv(dev); -} - -/** - * adap2pinfo - return the port_info of a port - * @adap: the adapter - * @pidx: the port index - * - * Return the port_info structure for the adapter. - */ -static inline struct port_info *adap2pinfo(struct adapter *adapter, int pidx) -{ - return netdev_priv(adapter->port[pidx]); -} - -/** - * netdev2adap - return the adapter structure associated with a net_device - * @dev: the netdev - * - * Return the struct adapter associated with a net_device - */ -static inline struct adapter *netdev2adap(const struct net_device *dev) -{ - return netdev2pinfo(dev)->adapter; -} - -/* - * OS "Callback" function declarations. These are functions that the OS code - * is "contracted" to provide for the common code. - */ -void t4vf_os_link_changed(struct adapter *, int, int); - -/* - * SGE function prototype declarations. - */ -int t4vf_sge_alloc_rxq(struct adapter *, struct sge_rspq *, bool, - struct net_device *, int, - struct sge_fl *, rspq_handler_t); -int t4vf_sge_alloc_eth_txq(struct adapter *, struct sge_eth_txq *, - struct net_device *, struct netdev_queue *, - unsigned int); -void t4vf_free_sge_resources(struct adapter *); - -int t4vf_eth_xmit(struct sk_buff *, struct net_device *); -int t4vf_ethrx_handler(struct sge_rspq *, const __be64 *, - const struct pkt_gl *); - -irq_handler_t t4vf_intr_handler(struct adapter *); -irqreturn_t t4vf_sge_intr_msix(int, void *); - -int t4vf_sge_init(struct adapter *); -void t4vf_sge_start(struct adapter *); -void t4vf_sge_stop(struct adapter *); - -#endif /* __CXGB4VF_ADAPTER_H__ */ -- cgit v1.2.3