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bna: Serialize smem access during adapter initialization

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Use init semaphore to serialize execution of the "unlock IOC semaphore"
code. Added bfa_ioc_fwver_clear() function to clear the firmware header if
last firmwar boot is not from driver.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jing Huang 2012-04-04 05:42:08 +00:00 committed by David S. Miller
parent 695e00789a
commit e491c77ed3
1 changed files with 42 additions and 8 deletions
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50
drivers/net/ethernet/brocade/bna/bfa_ioc.c
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@ -1207,27 +1207,62 @@ bfa_nw_ioc_sem_release(void __iomem *sem_reg)
writel(1, sem_reg);
}
/* Clear fwver hdr */
static void
bfa_ioc_fwver_clear(struct bfa_ioc *ioc)
{
u32 pgnum, pgoff, loff = 0;
int i;
pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, loff);
pgoff = PSS_SMEM_PGOFF(loff);
writel(pgnum, ioc->ioc_regs.host_page_num_fn);
for (i = 0; i < (sizeof(struct bfi_ioc_image_hdr) / sizeof(u32)); i++) {
writel(0, ioc->ioc_regs.smem_page_start + loff);
loff += sizeof(u32);
}
}
static void
bfa_ioc_hw_sem_init(struct bfa_ioc *ioc)
{
struct bfi_ioc_image_hdr fwhdr;
u32 fwstate = readl(ioc->ioc_regs.ioc_fwstate);
u32 fwstate, r32;
if (fwstate == BFI_IOC_UNINIT)
/* Spin on init semaphore to serialize. */
r32 = readl(ioc->ioc_regs.ioc_init_sem_reg);
while (r32 & 0x1) {
udelay(20);
r32 = readl(ioc->ioc_regs.ioc_init_sem_reg);
}
fwstate = readl(ioc->ioc_regs.ioc_fwstate);
if (fwstate == BFI_IOC_UNINIT) {
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
return;
}
bfa_nw_ioc_fwver_get(ioc, &fwhdr);
if (swab32(fwhdr.exec) == BFI_FWBOOT_TYPE_NORMAL)
if (swab32(fwhdr.exec) == BFI_FWBOOT_TYPE_NORMAL) {
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
return;
}
bfa_ioc_fwver_clear(ioc);
writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
/*
* Try to lock and then unlock the semaphore.
*/
readl(ioc->ioc_regs.ioc_sem_reg);
writel(1, ioc->ioc_regs.ioc_sem_reg);
/* Unlock init semaphore */
writel(1, ioc->ioc_regs.ioc_init_sem_reg);
}
static void
@ -1585,11 +1620,6 @@ bfa_ioc_download_fw(struct bfa_ioc *ioc, u32 boot_type,
u32 i;
u32 asicmode;
/**
* Initialize LMEM first before code download
*/
bfa_ioc_lmem_init(ioc);
fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), chunkno);
pgnum = bfa_ioc_smem_pgnum(ioc, loff);
@ -1914,6 +1944,10 @@ bfa_ioc_pll_init(struct bfa_ioc *ioc)
bfa_ioc_pll_init_asic(ioc);
ioc->pllinit = true;
/* Initialize LMEM */
bfa_ioc_lmem_init(ioc);
/*
* release semaphore.
*/