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linux/drivers/net/bna/bfa_ioc.h
Rasesh Mody 79ea6c8966 bna: fix for clean fw re-initialization 
During a kernel crash, bna control path state machine and firmware do not
get a notification and hence are not cleanly shutdown. The registers
holding driver/IOC state information are not reset back to valid
disabled/parking values. This causes subsequent driver initialization
to hang during kdump kernel boot. This patch, during the initialization
of first PCI function, resets corresponding register when unclean shutown
is detect by reading chip registers. This will make sure that ioc/fw
gets clean re-initialization.

Signed-off-by: Debashis Dutt <ddutt@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-14 13:39:44 -07:00

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/*
* Linux network driver for Brocade Converged Network Adapter.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License (GPL) Version 2 as
* published by the Free Software Foundation
*
* 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.
*/
/*
* Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
* All rights reserved
* www.brocade.com
*/
#ifndef __BFA_IOC_H__
#define __BFA_IOC_H__
#include "bfa_sm.h"
#include "bfi.h"
#include "cna.h"
#define BFA_IOC_TOV 3000 /* msecs */
#define BFA_IOC_HWSEM_TOV 500 /* msecs */
#define BFA_IOC_HB_TOV 500 /* msecs */
#define BFA_IOC_HWINIT_MAX 5
/**
* PCI device information required by IOC
*/
struct bfa_pcidev {
int pci_slot;
u8 pci_func;
u16 device_id;
void __iomem *pci_bar_kva;
};
/**
* Structure used to remember the DMA-able memory block's KVA and Physical
* Address
*/
struct bfa_dma {
void *kva; /* ! Kernel virtual address */
u64 pa; /* ! Physical address */
};
#define BFA_DMA_ALIGN_SZ 256
/**
* smem size for Crossbow and Catapult
*/
#define BFI_SMEM_CB_SIZE 0x200000U /* ! 2MB for crossbow */
#define BFI_SMEM_CT_SIZE 0x280000U /* ! 2.5MB for catapult */
/**
* @brief BFA dma address assignment macro. (big endian format)
*/
#define bfa_dma_be_addr_set(dma_addr, pa) \
__bfa_dma_be_addr_set(&dma_addr, (u64)pa)
static inline void
__bfa_dma_be_addr_set(union bfi_addr_u *dma_addr, u64 pa)
{
dma_addr->a32.addr_lo = (u32) htonl(pa);
dma_addr->a32.addr_hi = (u32) htonl(upper_32_bits(pa));
}
struct bfa_ioc_regs {
void __iomem *hfn_mbox_cmd;
void __iomem *hfn_mbox;
void __iomem *lpu_mbox_cmd;
void __iomem *lpu_mbox;
void __iomem *pss_ctl_reg;
void __iomem *pss_err_status_reg;
void __iomem *app_pll_fast_ctl_reg;
void __iomem *app_pll_slow_ctl_reg;
void __iomem *ioc_sem_reg;
void __iomem *ioc_usage_sem_reg;
void __iomem *ioc_init_sem_reg;
void __iomem *ioc_usage_reg;
void __iomem *host_page_num_fn;
void __iomem *heartbeat;
void __iomem *ioc_fwstate;
void __iomem *alt_ioc_fwstate;
void __iomem *ll_halt;
void __iomem *alt_ll_halt;
void __iomem *err_set;
void __iomem *ioc_fail_sync;
void __iomem *shirq_isr_next;
void __iomem *shirq_msk_next;
void __iomem *smem_page_start;
u32 smem_pg0;
};
/**
* IOC Mailbox structures
*/
struct bfa_mbox_cmd {
struct list_head qe;
u32 msg[BFI_IOC_MSGSZ];
};
/**
* IOC mailbox module
*/
typedef void (*bfa_ioc_mbox_mcfunc_t)(void *cbarg, struct bfi_mbmsg *m);
struct bfa_ioc_mbox_mod {
struct list_head cmd_q; /*!< pending mbox queue */
int nmclass; /*!< number of handlers */
struct {
bfa_ioc_mbox_mcfunc_t cbfn; /*!< message handlers */
void *cbarg;
} mbhdlr[BFI_MC_MAX];
};
/**
* IOC callback function interfaces
*/
typedef void (*bfa_ioc_enable_cbfn_t)(void *bfa, enum bfa_status status);
typedef void (*bfa_ioc_disable_cbfn_t)(void *bfa);
typedef void (*bfa_ioc_hbfail_cbfn_t)(void *bfa);
typedef void (*bfa_ioc_reset_cbfn_t)(void *bfa);
struct bfa_ioc_cbfn {
bfa_ioc_enable_cbfn_t enable_cbfn;
bfa_ioc_disable_cbfn_t disable_cbfn;
bfa_ioc_hbfail_cbfn_t hbfail_cbfn;
bfa_ioc_reset_cbfn_t reset_cbfn;
};
/**
* Heartbeat failure notification queue element.
*/
struct bfa_ioc_hbfail_notify {
struct list_head qe;
bfa_ioc_hbfail_cbfn_t cbfn;
void *cbarg;
};
/**
* Initialize a heartbeat failure notification structure
*/
#define bfa_ioc_hbfail_init(__notify, __cbfn, __cbarg) do { \
(__notify)->cbfn = (__cbfn); \
(__notify)->cbarg = (__cbarg); \
} while (0)
struct bfa_iocpf {
bfa_fsm_t fsm;
struct bfa_ioc *ioc;
u32 retry_count;
bool auto_recover;
};
struct bfa_ioc {
bfa_fsm_t fsm;
struct bfa *bfa;
struct bfa_pcidev pcidev;
struct timer_list ioc_timer;
struct timer_list iocpf_timer;
struct timer_list sem_timer;
struct timer_list hb_timer;
u32 hb_count;
struct list_head hb_notify_q;
void *dbg_fwsave;
int dbg_fwsave_len;
bool dbg_fwsave_once;
enum bfi_mclass ioc_mc;
struct bfa_ioc_regs ioc_regs;
struct bfa_ioc_drv_stats stats;
bool fcmode;
bool ctdev;
bool cna;
bool pllinit;
bool stats_busy; /*!< outstanding stats */
u8 port_id;
struct bfa_dma attr_dma;
struct bfi_ioc_attr *attr;
struct bfa_ioc_cbfn *cbfn;
struct bfa_ioc_mbox_mod mbox_mod;
struct bfa_ioc_hwif *ioc_hwif;
struct bfa_iocpf iocpf;
};
struct bfa_ioc_hwif {
enum bfa_status (*ioc_pll_init) (void __iomem *rb, bool fcmode);
bool (*ioc_firmware_lock) (struct bfa_ioc *ioc);
void (*ioc_firmware_unlock) (struct bfa_ioc *ioc);
void (*ioc_reg_init) (struct bfa_ioc *ioc);
void (*ioc_map_port) (struct bfa_ioc *ioc);
void (*ioc_isr_mode_set) (struct bfa_ioc *ioc,
bool msix);
void (*ioc_notify_fail) (struct bfa_ioc *ioc);
void (*ioc_ownership_reset) (struct bfa_ioc *ioc);
bool (*ioc_sync_start) (struct bfa_ioc *ioc);
void (*ioc_sync_join) (struct bfa_ioc *ioc);
void (*ioc_sync_leave) (struct bfa_ioc *ioc);
void (*ioc_sync_ack) (struct bfa_ioc *ioc);
bool (*ioc_sync_complete) (struct bfa_ioc *ioc);
};
#define bfa_ioc_pcifn(__ioc) ((__ioc)->pcidev.pci_func)
#define bfa_ioc_devid(__ioc) ((__ioc)->pcidev.device_id)
#define bfa_ioc_bar0(__ioc) ((__ioc)->pcidev.pci_bar_kva)
#define bfa_ioc_portid(__ioc) ((__ioc)->port_id)
#define bfa_ioc_fetch_stats(__ioc, __stats) \
(((__stats)->drv_stats) = (__ioc)->stats)
#define bfa_ioc_clr_stats(__ioc) \
memset(&(__ioc)->stats, 0, sizeof((__ioc)->stats))
#define bfa_ioc_maxfrsize(__ioc) ((__ioc)->attr->maxfrsize)
#define bfa_ioc_rx_bbcredit(__ioc) ((__ioc)->attr->rx_bbcredit)
#define bfa_ioc_speed_sup(__ioc) \
BFI_ADAPTER_GETP(SPEED, (__ioc)->attr->adapter_prop)
#define bfa_ioc_get_nports(__ioc) \
BFI_ADAPTER_GETP(NPORTS, (__ioc)->attr->adapter_prop)
#define bfa_ioc_stats(_ioc, _stats) ((_ioc)->stats._stats++)
#define BFA_IOC_FWIMG_MINSZ (16 * 1024)
#define BFA_IOC_FWIMG_TYPE(__ioc) \
(((__ioc)->ctdev) ? \
(((__ioc)->fcmode) ? BFI_IMAGE_CT_FC : BFI_IMAGE_CT_CNA) : \
BFI_IMAGE_CB_FC)
#define BFA_IOC_FW_SMEM_SIZE(__ioc) \
(((__ioc)->ctdev) ? BFI_SMEM_CT_SIZE : BFI_SMEM_CB_SIZE)
#define BFA_IOC_FLASH_CHUNK_NO(off) (off / BFI_FLASH_CHUNK_SZ_WORDS)
#define BFA_IOC_FLASH_OFFSET_IN_CHUNK(off) (off % BFI_FLASH_CHUNK_SZ_WORDS)
#define BFA_IOC_FLASH_CHUNK_ADDR(chunkno) (chunkno * BFI_FLASH_CHUNK_SZ_WORDS)
/**
* IOC mailbox interface
*/
void bfa_nw_ioc_mbox_queue(struct bfa_ioc *ioc, struct bfa_mbox_cmd *cmd);
void bfa_nw_ioc_mbox_isr(struct bfa_ioc *ioc);
void bfa_nw_ioc_mbox_regisr(struct bfa_ioc *ioc, enum bfi_mclass mc,
bfa_ioc_mbox_mcfunc_t cbfn, void *cbarg);
/**
* IOC interfaces
*/
#define bfa_ioc_pll_init_asic(__ioc) \
((__ioc)->ioc_hwif->ioc_pll_init((__ioc)->pcidev.pci_bar_kva, \
(__ioc)->fcmode))
#define bfa_ioc_isr_mode_set(__ioc, __msix) \
((__ioc)->ioc_hwif->ioc_isr_mode_set(__ioc, __msix))
#define bfa_ioc_ownership_reset(__ioc) \
((__ioc)->ioc_hwif->ioc_ownership_reset(__ioc))
void bfa_nw_ioc_set_ct_hwif(struct bfa_ioc *ioc);
void bfa_nw_ioc_attach(struct bfa_ioc *ioc, void *bfa,
struct bfa_ioc_cbfn *cbfn);
void bfa_nw_ioc_auto_recover(bool auto_recover);
void bfa_nw_ioc_detach(struct bfa_ioc *ioc);
void bfa_nw_ioc_pci_init(struct bfa_ioc *ioc, struct bfa_pcidev *pcidev,
enum bfi_mclass mc);
u32 bfa_nw_ioc_meminfo(void);
void bfa_nw_ioc_mem_claim(struct bfa_ioc *ioc, u8 *dm_kva, u64 dm_pa);
void bfa_nw_ioc_enable(struct bfa_ioc *ioc);
void bfa_nw_ioc_disable(struct bfa_ioc *ioc);
void bfa_nw_ioc_error_isr(struct bfa_ioc *ioc);
void bfa_nw_ioc_get_attr(struct bfa_ioc *ioc, struct bfa_ioc_attr *ioc_attr);
void bfa_nw_ioc_hbfail_register(struct bfa_ioc *ioc,
struct bfa_ioc_hbfail_notify *notify);
bool bfa_nw_ioc_sem_get(void __iomem *sem_reg);
void bfa_nw_ioc_sem_release(void __iomem *sem_reg);
void bfa_nw_ioc_hw_sem_release(struct bfa_ioc *ioc);
void bfa_nw_ioc_fwver_get(struct bfa_ioc *ioc,
struct bfi_ioc_image_hdr *fwhdr);
bool bfa_nw_ioc_fwver_cmp(struct bfa_ioc *ioc,
struct bfi_ioc_image_hdr *fwhdr);
mac_t bfa_nw_ioc_get_mac(struct bfa_ioc *ioc);
/*
* Timeout APIs
*/
void bfa_nw_ioc_timeout(void *ioc);
void bfa_nw_ioc_hb_check(void *ioc);
void bfa_nw_iocpf_timeout(void *ioc);
void bfa_nw_iocpf_sem_timeout(void *ioc);
/*
* F/W Image Size & Chunk
*/
u32 *bfa_cb_image_get_chunk(int type, u32 off);
u32 bfa_cb_image_get_size(int type);
#endif /* __BFA_IOC_H__ */
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