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path: root/drivers/scsi/bfa/bfa_ioc_cb.c
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Diffstat (limited to 'drivers/scsi/bfa/bfa_ioc_cb.c')
-rw-r--r--drivers/scsi/bfa/bfa_ioc_cb.c86
1 files changed, 79 insertions, 7 deletions
diff --git a/drivers/scsi/bfa/bfa_ioc_cb.c b/drivers/scsi/bfa/bfa_ioc_cb.c
index 30df8a284715..e3b928746674 100644
--- a/drivers/scsi/bfa/bfa_ioc_cb.c
+++ b/drivers/scsi/bfa/bfa_ioc_cb.c
@@ -22,6 +22,8 @@
BFA_TRC_FILE(CNA, IOC_CB);
+#define bfa_ioc_cb_join_pos(__ioc) ((u32) (1 << BFA_IOC_CB_JOIN_SH))
+
/*
* forward declarations
*/
@@ -37,6 +39,12 @@ static void bfa_ioc_cb_sync_join(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_sync_leave(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_sync_ack(struct bfa_ioc_s *ioc);
static bfa_boolean_t bfa_ioc_cb_sync_complete(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_set_cur_ioc_fwstate(
+ struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
+static enum bfi_ioc_state bfa_ioc_cb_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_set_alt_ioc_fwstate(
+ struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
+static enum bfi_ioc_state bfa_ioc_cb_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc);
static struct bfa_ioc_hwif_s hwif_cb;
@@ -59,6 +67,10 @@ bfa_ioc_set_cb_hwif(struct bfa_ioc_s *ioc)
hwif_cb.ioc_sync_leave = bfa_ioc_cb_sync_leave;
hwif_cb.ioc_sync_ack = bfa_ioc_cb_sync_ack;
hwif_cb.ioc_sync_complete = bfa_ioc_cb_sync_complete;
+ hwif_cb.ioc_set_fwstate = bfa_ioc_cb_set_cur_ioc_fwstate;
+ hwif_cb.ioc_get_fwstate = bfa_ioc_cb_get_cur_ioc_fwstate;
+ hwif_cb.ioc_set_alt_fwstate = bfa_ioc_cb_set_alt_ioc_fwstate;
+ hwif_cb.ioc_get_alt_fwstate = bfa_ioc_cb_get_alt_ioc_fwstate;
ioc->ioc_hwif = &hwif_cb;
}
@@ -187,6 +199,20 @@ bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
static bfa_boolean_t
bfa_ioc_cb_sync_start(struct bfa_ioc_s *ioc)
{
+ u32 ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
+
+ /**
+ * Driver load time. If the join bit is set,
+ * it is due to an unclean exit by the driver for this
+ * PCI fn in the previous incarnation. Whoever comes here first
+ * should clean it up, no matter which PCI fn.
+ */
+ if (ioc_fwstate & BFA_IOC_CB_JOIN_MASK) {
+ writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
+ writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
+ return BFA_TRUE;
+ }
+
return bfa_ioc_cb_sync_complete(ioc);
}
@@ -212,24 +238,66 @@ bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc)
static void
bfa_ioc_cb_sync_join(struct bfa_ioc_s *ioc)
{
+ u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);
+ u32 join_pos = bfa_ioc_cb_join_pos(ioc);
+
+ writel((r32 | join_pos), ioc->ioc_regs.ioc_fwstate);
}
static void
bfa_ioc_cb_sync_leave(struct bfa_ioc_s *ioc)
{
+ u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);
+ u32 join_pos = bfa_ioc_cb_join_pos(ioc);
+
+ writel((r32 & ~join_pos), ioc->ioc_regs.ioc_fwstate);
+}
+
+static void
+bfa_ioc_cb_set_cur_ioc_fwstate(struct bfa_ioc_s *ioc,
+ enum bfi_ioc_state fwstate)
+{
+ u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);
+
+ writel((fwstate | (r32 & BFA_IOC_CB_JOIN_MASK)),
+ ioc->ioc_regs.ioc_fwstate);
+}
+
+static enum bfi_ioc_state
+bfa_ioc_cb_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc)
+{
+ return (enum bfi_ioc_state)(readl(ioc->ioc_regs.ioc_fwstate) &
+ BFA_IOC_CB_FWSTATE_MASK);
+}
+
+static void
+bfa_ioc_cb_set_alt_ioc_fwstate(struct bfa_ioc_s *ioc,
+ enum bfi_ioc_state fwstate)
+{
+ u32 r32 = readl(ioc->ioc_regs.alt_ioc_fwstate);
+
+ writel((fwstate | (r32 & BFA_IOC_CB_JOIN_MASK)),
+ ioc->ioc_regs.alt_ioc_fwstate);
+}
+
+static enum bfi_ioc_state
+bfa_ioc_cb_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc)
+{
+ return (enum bfi_ioc_state)(readl(ioc->ioc_regs.alt_ioc_fwstate) &
+ BFA_IOC_CB_FWSTATE_MASK);
}
static void
bfa_ioc_cb_sync_ack(struct bfa_ioc_s *ioc)
{
- writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
+ bfa_ioc_cb_set_cur_ioc_fwstate(ioc, BFI_IOC_FAIL);
}
static bfa_boolean_t
bfa_ioc_cb_sync_complete(struct bfa_ioc_s *ioc)
{
- uint32_t fwstate, alt_fwstate;
- fwstate = readl(ioc->ioc_regs.ioc_fwstate);
+ u32 fwstate, alt_fwstate;
+ fwstate = bfa_ioc_cb_get_cur_ioc_fwstate(ioc);
/*
* At this point, this IOC is hoding the hw sem in the
@@ -257,7 +325,7 @@ bfa_ioc_cb_sync_complete(struct bfa_ioc_s *ioc)
fwstate == BFI_IOC_OP)
return BFA_TRUE;
else {
- alt_fwstate = readl(ioc->ioc_regs.alt_ioc_fwstate);
+ alt_fwstate = bfa_ioc_cb_get_alt_ioc_fwstate(ioc);
if (alt_fwstate == BFI_IOC_FAIL ||
alt_fwstate == BFI_IOC_DISABLED ||
alt_fwstate == BFI_IOC_UNINIT ||
@@ -272,7 +340,7 @@ bfa_ioc_cb_sync_complete(struct bfa_ioc_s *ioc)
bfa_status_t
bfa_ioc_cb_pll_init(void __iomem *rb, enum bfi_asic_mode fcmode)
{
- u32 pll_sclk, pll_fclk;
+ u32 pll_sclk, pll_fclk, join_bits;
pll_sclk = __APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN |
__APP_PLL_SCLK_P0_1(3U) |
@@ -282,8 +350,12 @@ bfa_ioc_cb_pll_init(void __iomem *rb, enum bfi_asic_mode fcmode)
__APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
__APP_PLL_LCLK_JITLMT0_1(3U) |
__APP_PLL_LCLK_CNTLMT0_1(3U);
- writel(BFI_IOC_UNINIT, (rb + BFA_IOC0_STATE_REG));
- writel(BFI_IOC_UNINIT, (rb + BFA_IOC1_STATE_REG));
+ join_bits = readl(rb + BFA_IOC0_STATE_REG) &
+ BFA_IOC_CB_JOIN_MASK;
+ writel((BFI_IOC_UNINIT | join_bits), (rb + BFA_IOC0_STATE_REG));
+ join_bits = readl(rb + BFA_IOC1_STATE_REG) &
+ BFA_IOC_CB_JOIN_MASK;
+ writel((BFI_IOC_UNINIT | join_bits), (rb + BFA_IOC1_STATE_REG));
writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));