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[SCSI] bfa: Add support to store driver configuration in flash. 

- Added dconf (Driver Config) BFA sub-module.
- The dconf sub-module provides interfaces and manages flash writes
  to the flash DRV parition.
- dconf sub-module also ensures that the whole 64K DRV partition is updated
  on a flash write.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati 2011-07-20 17:03:46 -07:00 committed by James Bottomley
parent c0350bf574
commit 45c5dc1d3f
7 changed files with 481 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/scsi/bfa/bfa.h
View File

@ -412,6 +412,7 @@ bfa_status_t bfa_iocfc_israttr_set(struct bfa_s *bfa,
void bfa_iocfc_enable(struct bfa_s *bfa);
void bfa_iocfc_disable(struct bfa_s *bfa);
void bfa_iocfc_cb_dconf_modinit(struct bfa_s *bfa, bfa_status_t status);
#define bfa_timer_start(_bfa, _timer, _timercb, _arg, _timeout) \
bfa_timer_begin(&(_bfa)->timer_mod, _timer, _timercb, _arg, _timeout)

25
drivers/scsi/bfa/bfa_core.c
View File

@ -33,6 +33,7 @@ static struct bfa_module_s *hal_mods[] = {
&hal_mod_uf,
&hal_mod_rport,
&hal_mod_fcp,
&hal_mod_dconf,
NULL
};
@ -702,7 +703,7 @@ bfa_iocfc_init_cb(void *bfa_arg, bfa_boolean_t complete)
struct bfa_s *bfa = bfa_arg;
if (complete) {
if (bfa->iocfc.cfgdone)
if (bfa->iocfc.cfgdone && BFA_DCONF_MOD(bfa)->flashdone)
bfa_cb_init(bfa->bfad, BFA_STATUS_OK);
else
bfa_cb_init(bfa->bfad, BFA_STATUS_FAILED);
@ -815,9 +816,11 @@ bfa_iocfc_cfgrsp(struct bfa_s *bfa)
*/
bfa_fcport_init(bfa);
if (iocfc->action == BFA_IOCFC_ACT_INIT)
bfa_cb_queue(bfa, &iocfc->init_hcb_qe, bfa_iocfc_init_cb, bfa);
else {
if (iocfc->action == BFA_IOCFC_ACT_INIT) {
if (BFA_DCONF_MOD(bfa)->flashdone == BFA_TRUE)
bfa_cb_queue(bfa, &iocfc->init_hcb_qe,
bfa_iocfc_init_cb, bfa);
} else {
if (bfa->iocfc.action == BFA_IOCFC_ACT_ENABLE)
bfa_cb_queue(bfa, &bfa->iocfc.en_hcb_qe,
bfa_iocfc_enable_cb, bfa);
@ -1038,6 +1041,7 @@ bfa_iocfc_enable_cbfn(void *bfa_arg, enum bfa_status status)
}
bfa_iocfc_send_cfg(bfa);
bfa_dconf_modinit(bfa);
}
/*
@ -1200,7 +1204,9 @@ bfa_iocfc_stop(struct bfa_s *bfa)
bfa->iocfc.action = BFA_IOCFC_ACT_STOP;
bfa->queue_process = BFA_FALSE;
bfa_ioc_disable(&bfa->ioc);
bfa_dconf_modexit(bfa);
if (BFA_DCONF_MOD(bfa)->flashdone == BFA_TRUE)
bfa_ioc_disable(&bfa->ioc);
}
void
@ -1561,6 +1567,15 @@ bfa_comp_free(struct bfa_s *bfa, struct list_head *comp_q)
}
}
void
bfa_iocfc_cb_dconf_modinit(struct bfa_s *bfa, bfa_status_t status)
{
if (bfa->iocfc.action == BFA_IOCFC_ACT_INIT) {
if (bfa->iocfc.cfgdone == BFA_TRUE)
bfa_cb_queue(bfa, &bfa->iocfc.init_hcb_qe,
bfa_iocfc_init_cb, bfa);
}
}
/*
* Return the list of PCI vendor/device id lists supported by this

21
drivers/scsi/bfa/bfa_defs_svc.h
View File

@ -788,6 +788,27 @@ enum bfa_port_linkstate_rsn {
CEE_ISCSI_PRI_OVERLAP_FCOE_PRI = 43
};
#pragma pack(1)
/*
* LUN mask configuration
*/
struct bfa_lun_mask_s {
wwn_t lp_wwn;
wwn_t rp_wwn;
lun_t lun;
u8 ua;
u8 rsvd[3];
u16 rp_tag;
u8 lp_tag;
u8 state;
};
#define MAX_LUN_MASK_CFG 16
struct bfa_lunmask_cfg_s {
u32 status;
u32 rsvd;
struct bfa_lun_mask_s lun_list[MAX_LUN_MASK_CFG];
};
/*
* Physical port configuration
*/

1
drivers/scsi/bfa/bfa_fc.h
View File

@ -21,6 +21,7 @@
#include "bfad_drv.h"
typedef u64 wwn_t;
typedef u64 lun_t;
#define WWN_NULL (0)
#define FC_SYMNAME_MAX 256 /* max name server symbolic name size */

393
drivers/scsi/bfa/bfa_ioc.c
View File

@ -5588,3 +5588,396 @@ bfa_phy_intr(void *phyarg, struct bfi_mbmsg_s *msg)
WARN_ON(1);
}
}
/*
* DCONF module specific
*/
BFA_MODULE(dconf);
/*
* DCONF state machine events
*/
enum bfa_dconf_event {
BFA_DCONF_SM_INIT = 1, /* dconf Init */
BFA_DCONF_SM_FLASH_COMP = 2, /* read/write to flash */
BFA_DCONF_SM_WR = 3, /* binding change, map */
BFA_DCONF_SM_TIMEOUT = 4, /* Start timer */
BFA_DCONF_SM_EXIT = 5, /* exit dconf module */
BFA_DCONF_SM_IOCDISABLE = 6, /* IOC disable event */
};
/* forward declaration of DCONF state machine */
static void bfa_dconf_sm_uninit(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_sm_flash_read(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_sm_ready(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_sm_dirty(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_sm_sync(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_sm_final_sync(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_sm_iocdown_dirty(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event);
static void bfa_dconf_cbfn(void *dconf, bfa_status_t status);
static void bfa_dconf_timer(void *cbarg);
static bfa_status_t bfa_dconf_flash_write(struct bfa_dconf_mod_s *dconf);
static void bfa_dconf_init_cb(void *arg, bfa_status_t status);
/*
* Begining state of dconf module. Waiting for an event to start.
*/
static void
bfa_dconf_sm_uninit(struct bfa_dconf_mod_s *dconf, enum bfa_dconf_event event)
{
bfa_status_t bfa_status;
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_INIT:
if (dconf->min_cfg) {
bfa_trc(dconf->bfa, dconf->min_cfg);
return;
}
bfa_sm_set_state(dconf, bfa_dconf_sm_flash_read);
dconf->flashdone = BFA_FALSE;
bfa_trc(dconf->bfa, dconf->flashdone);
bfa_status = bfa_flash_read_part(BFA_FLASH(dconf->bfa),
BFA_FLASH_PART_DRV, dconf->instance,
dconf->dconf,
sizeof(struct bfa_dconf_s), 0,
bfa_dconf_init_cb, dconf->bfa);
if (bfa_status != BFA_STATUS_OK) {
bfa_dconf_init_cb(dconf->bfa, BFA_STATUS_FAILED);
bfa_sm_set_state(dconf, bfa_dconf_sm_uninit);
return;
}
break;
case BFA_DCONF_SM_EXIT:
dconf->flashdone = BFA_TRUE;
case BFA_DCONF_SM_IOCDISABLE:
case BFA_DCONF_SM_WR:
case BFA_DCONF_SM_FLASH_COMP:
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
/*
* Read flash for dconf entries and make a call back to the driver once done.
*/
static void
bfa_dconf_sm_flash_read(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event)
{
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_FLASH_COMP:
bfa_sm_set_state(dconf, bfa_dconf_sm_ready);
break;
case BFA_DCONF_SM_TIMEOUT:
bfa_sm_set_state(dconf, bfa_dconf_sm_ready);
break;
case BFA_DCONF_SM_EXIT:
dconf->flashdone = BFA_TRUE;
bfa_trc(dconf->bfa, dconf->flashdone);
case BFA_DCONF_SM_IOCDISABLE:
bfa_sm_set_state(dconf, bfa_dconf_sm_uninit);
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
/*
* DCONF Module is in ready state. Has completed the initialization.
*/
static void
bfa_dconf_sm_ready(struct bfa_dconf_mod_s *dconf, enum bfa_dconf_event event)
{
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_WR:
bfa_timer_start(dconf->bfa, &dconf->timer,
bfa_dconf_timer, dconf, BFA_DCONF_UPDATE_TOV);
bfa_sm_set_state(dconf, bfa_dconf_sm_dirty);
break;
case BFA_DCONF_SM_EXIT:
dconf->flashdone = BFA_TRUE;
bfa_trc(dconf->bfa, dconf->flashdone);
bfa_sm_set_state(dconf, bfa_dconf_sm_uninit);
break;
case BFA_DCONF_SM_INIT:
case BFA_DCONF_SM_IOCDISABLE:
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
/*
* entries are dirty, write back to the flash.
*/
static void
bfa_dconf_sm_dirty(struct bfa_dconf_mod_s *dconf, enum bfa_dconf_event event)
{
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_TIMEOUT:
bfa_sm_set_state(dconf, bfa_dconf_sm_sync);
bfa_dconf_flash_write(dconf);
break;
case BFA_DCONF_SM_WR:
bfa_timer_stop(&dconf->timer);
bfa_timer_start(dconf->bfa, &dconf->timer,
bfa_dconf_timer, dconf, BFA_DCONF_UPDATE_TOV);
break;
case BFA_DCONF_SM_EXIT:
bfa_timer_stop(&dconf->timer);
bfa_timer_start(dconf->bfa, &dconf->timer,
bfa_dconf_timer, dconf, BFA_DCONF_UPDATE_TOV);
bfa_sm_set_state(dconf, bfa_dconf_sm_final_sync);
bfa_dconf_flash_write(dconf);
break;
case BFA_DCONF_SM_FLASH_COMP:
break;
case BFA_DCONF_SM_IOCDISABLE:
bfa_timer_stop(&dconf->timer);
bfa_sm_set_state(dconf, bfa_dconf_sm_iocdown_dirty);
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
/*
* Sync the dconf entries to the flash.
*/
static void
bfa_dconf_sm_final_sync(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event)
{
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_IOCDISABLE:
case BFA_DCONF_SM_FLASH_COMP:
bfa_timer_stop(&dconf->timer);
case BFA_DCONF_SM_TIMEOUT:
bfa_sm_set_state(dconf, bfa_dconf_sm_uninit);
dconf->flashdone = BFA_TRUE;
bfa_trc(dconf->bfa, dconf->flashdone);
bfa_ioc_disable(&dconf->bfa->ioc);
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
static void
bfa_dconf_sm_sync(struct bfa_dconf_mod_s *dconf, enum bfa_dconf_event event)
{
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_FLASH_COMP:
bfa_sm_set_state(dconf, bfa_dconf_sm_ready);
break;
case BFA_DCONF_SM_WR:
bfa_timer_start(dconf->bfa, &dconf->timer,
bfa_dconf_timer, dconf, BFA_DCONF_UPDATE_TOV);
bfa_sm_set_state(dconf, bfa_dconf_sm_dirty);
break;
case BFA_DCONF_SM_EXIT:
bfa_timer_start(dconf->bfa, &dconf->timer,
bfa_dconf_timer, dconf, BFA_DCONF_UPDATE_TOV);
bfa_sm_set_state(dconf, bfa_dconf_sm_final_sync);
break;
case BFA_DCONF_SM_IOCDISABLE:
bfa_sm_set_state(dconf, bfa_dconf_sm_iocdown_dirty);
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
static void
bfa_dconf_sm_iocdown_dirty(struct bfa_dconf_mod_s *dconf,
enum bfa_dconf_event event)
{
bfa_trc(dconf->bfa, event);
switch (event) {
case BFA_DCONF_SM_INIT:
bfa_timer_start(dconf->bfa, &dconf->timer,
bfa_dconf_timer, dconf, BFA_DCONF_UPDATE_TOV);
bfa_sm_set_state(dconf, bfa_dconf_sm_dirty);
break;
case BFA_DCONF_SM_EXIT:
dconf->flashdone = BFA_TRUE;
bfa_sm_set_state(dconf, bfa_dconf_sm_uninit);
break;
case BFA_DCONF_SM_IOCDISABLE:
break;
default:
bfa_sm_fault(dconf->bfa, event);
}
}
/*
* Compute and return memory needed by DRV_CFG module.
*/
static void
bfa_dconf_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
struct bfa_s *bfa)
{
struct bfa_mem_kva_s *dconf_kva = BFA_MEM_DCONF_KVA(bfa);
if (cfg->drvcfg.min_cfg)
bfa_mem_kva_setup(meminfo, dconf_kva,
sizeof(struct bfa_dconf_hdr_s));
else
bfa_mem_kva_setup(meminfo, dconf_kva,
sizeof(struct bfa_dconf_s));
}
static void
bfa_dconf_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
struct bfa_pcidev_s *pcidev)
{
struct bfa_dconf_mod_s *dconf = BFA_DCONF_MOD(bfa);
dconf->bfad = bfad;
dconf->bfa = bfa;
dconf->instance = bfa->ioc.port_id;
bfa_trc(bfa, dconf->instance);
dconf->dconf = (struct bfa_dconf_s *) bfa_mem_kva_curp(dconf);
if (cfg->drvcfg.min_cfg) {
bfa_mem_kva_curp(dconf) += sizeof(struct bfa_dconf_hdr_s);
dconf->min_cfg = BFA_TRUE;
/*
* Set the flashdone flag to TRUE explicitly as no flash
* write will happen in min_cfg mode.
*/
dconf->flashdone = BFA_TRUE;
} else {
dconf->min_cfg = BFA_FALSE;
bfa_mem_kva_curp(dconf) += sizeof(struct bfa_dconf_s);
}
bfa_dconf_read_data_valid(bfa) = BFA_FALSE;
bfa_sm_set_state(dconf, bfa_dconf_sm_uninit);
}
static void
bfa_dconf_init_cb(void *arg, bfa_status_t status)
{
struct bfa_s *bfa = arg;
struct bfa_dconf_mod_s *dconf = BFA_DCONF_MOD(bfa);
dconf->flashdone = BFA_TRUE;
bfa_trc(bfa, dconf->flashdone);
bfa_iocfc_cb_dconf_modinit(bfa, status);
if (status == BFA_STATUS_OK) {
bfa_dconf_read_data_valid(bfa) = BFA_TRUE;
if (dconf->dconf->hdr.signature != BFI_DCONF_SIGNATURE)
dconf->dconf->hdr.signature = BFI_DCONF_SIGNATURE;
if (dconf->dconf->hdr.version != BFI_DCONF_VERSION)
dconf->dconf->hdr.version = BFI_DCONF_VERSION;
}
bfa_sm_send_event(dconf, BFA_DCONF_SM_FLASH_COMP);
}
void
bfa_dconf_modinit(struct bfa_s *bfa)
{
struct bfa_dconf_mod_s *dconf = BFA_DCONF_MOD(bfa);
bfa_sm_send_event(dconf, BFA_DCONF_SM_INIT);
}
static void
bfa_dconf_start(struct bfa_s *bfa)
{
}
static void
bfa_dconf_stop(struct bfa_s *bfa)
{
}
static void bfa_dconf_timer(void *cbarg)
{
struct bfa_dconf_mod_s *dconf = cbarg;
bfa_sm_send_event(dconf, BFA_DCONF_SM_TIMEOUT);
}
static void
bfa_dconf_iocdisable(struct bfa_s *bfa)
{
struct bfa_dconf_mod_s *dconf = BFA_DCONF_MOD(bfa);
bfa_sm_send_event(dconf, BFA_DCONF_SM_IOCDISABLE);
}
static void
bfa_dconf_detach(struct bfa_s *bfa)
{
}
static bfa_status_t
bfa_dconf_flash_write(struct bfa_dconf_mod_s *dconf)
{
bfa_status_t bfa_status;
bfa_trc(dconf->bfa, 0);
bfa_status = bfa_flash_update_part(BFA_FLASH(dconf->bfa),
BFA_FLASH_PART_DRV, dconf->instance,
dconf->dconf, sizeof(struct bfa_dconf_s), 0,
bfa_dconf_cbfn, dconf);
if (bfa_status != BFA_STATUS_OK)
WARN_ON(bfa_status);
bfa_trc(dconf->bfa, bfa_status);
return bfa_status;
}
bfa_status_t
bfa_dconf_update(struct bfa_s *bfa)
{
struct bfa_dconf_mod_s *dconf = BFA_DCONF_MOD(bfa);
bfa_trc(dconf->bfa, 0);
if (bfa_sm_cmp_state(dconf, bfa_dconf_sm_iocdown_dirty))
return BFA_STATUS_FAILED;
if (dconf->min_cfg) {
bfa_trc(dconf->bfa, dconf->min_cfg);
return BFA_STATUS_FAILED;
}
bfa_sm_send_event(dconf, BFA_DCONF_SM_WR);
return BFA_STATUS_OK;
}
static void
bfa_dconf_cbfn(void *arg, bfa_status_t status)
{
struct bfa_dconf_mod_s *dconf = arg;
WARN_ON(status);
bfa_sm_send_event(dconf, BFA_DCONF_SM_FLASH_COMP);
}
void
bfa_dconf_modexit(struct bfa_s *bfa)
{
struct bfa_dconf_mod_s *dconf = BFA_DCONF_MOD(bfa);
BFA_DCONF_MOD(bfa)->flashdone = BFA_FALSE;
bfa_trc(bfa, BFA_DCONF_MOD(bfa)->flashdone);
bfa_sm_send_event(dconf, BFA_DCONF_SM_EXIT);
}

44
drivers/scsi/bfa/bfa_ioc.h
View File

@ -661,7 +661,6 @@ struct bfa_phy_s {
struct bfa_ioc_notify_s ioc_notify; /* ioc event notify */
struct bfa_mem_dma_s phy_dma;
};
#define BFA_PHY(__bfa) (&(__bfa)->modules.phy)
#define BFA_MEM_PHY_DMA(__bfa) (&(BFA_PHY(__bfa)->phy_dma))
@ -686,6 +685,49 @@ void bfa_phy_memclaim(struct bfa_phy_s *phy,
u8 *dm_kva, u64 dm_pa, bfa_boolean_t mincfg);
void bfa_phy_intr(void *phyarg, struct bfi_mbmsg_s *msg);
/*
* Driver Config( dconf) specific
*/
#define BFI_DCONF_SIGNATURE 0xabcdabcd
#define BFI_DCONF_VERSION 1
#pragma pack(1)
struct bfa_dconf_hdr_s {
u32 signature;
u32 version;
};
struct bfa_dconf_s {
struct bfa_dconf_hdr_s hdr;
struct bfa_lunmask_cfg_s lun_mask;
};
#pragma pack()
struct bfa_dconf_mod_s {
bfa_sm_t sm;
u8 instance;
bfa_boolean_t flashdone;
bfa_boolean_t read_data_valid;
bfa_boolean_t min_cfg;
struct bfa_timer_s timer;
struct bfa_s *bfa;
void *bfad;
void *trcmod;
struct bfa_dconf_s *dconf;
struct bfa_mem_kva_s kva_seg;
};
#define BFA_DCONF_MOD(__bfa) \
(&(__bfa)->modules.dconf_mod)
#define BFA_MEM_DCONF_KVA(__bfa) (&(BFA_DCONF_MOD(__bfa)->kva_seg))
#define bfa_dconf_read_data_valid(__bfa) \
(BFA_DCONF_MOD(__bfa)->read_data_valid)
#define BFA_DCONF_UPDATE_TOV 5000 /* memtest timeout in msec */
void bfa_dconf_modinit(struct bfa_s *bfa);
void bfa_dconf_modexit(struct bfa_s *bfa);
bfa_status_t bfa_dconf_update(struct bfa_s *bfa);
/*
* IOC specfic macros
*/

2
drivers/scsi/bfa/bfa_modules.h
View File

@ -44,6 +44,7 @@ struct bfa_modules_s {
struct bfa_flash_s flash; /* flash module */
struct bfa_diag_s diag_mod; /* diagnostics module */
struct bfa_phy_s phy; /* phy module */
struct bfa_dconf_mod_s dconf_mod; /* DCONF common module */
};
/*
@ -131,5 +132,6 @@ extern struct bfa_module_s hal_mod_lps;
extern struct bfa_module_s hal_mod_uf;
extern struct bfa_module_s hal_mod_rport;
extern struct bfa_module_s hal_mod_fcp;
extern struct bfa_module_s hal_mod_dconf;
#endif /* __BFA_MODULES_H__ */