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amd-xgbe: Re-issue interrupt if interrupt status not cleared

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Some of the device interrupts should function as level interrupts. For
some hardware configurations this requires setting some control bits
so that if the interrupt status has not been cleared the interrupt
should be reissued.

Additionally, when using MSI or MSI-X interrupts, run the interrupt
service routine as a tasklet so that the re-issuance of the interrupt
is handled properly.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lendacky, Thomas
2017-06-28 13:42:42 -05:00
committed by David S. Miller
parent 45a2005e93
commit 85b85c8534
6 changed files with 115 additions and 17 deletions
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11
drivers/net/ethernet/amd/xgbe/xgbe.h
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@@ -837,7 +837,7 @@ struct xgbe_phy_if {
bool (*phy_valid_speed)(struct xgbe_prv_data *, int);
/* For single interrupt support */
irqreturn_t (*an_isr)(int, struct xgbe_prv_data *);
irqreturn_t (*an_isr)(struct xgbe_prv_data *);
/* PHY implementation specific services */
struct xgbe_phy_impl_if phy_impl;
@@ -855,7 +855,7 @@ struct xgbe_i2c_if {
int (*i2c_xfer)(struct xgbe_prv_data *, struct xgbe_i2c_op *);
/* For single interrupt support */
irqreturn_t (*i2c_isr)(int, struct xgbe_prv_data *);
irqreturn_t (*i2c_isr)(struct xgbe_prv_data *);
};
struct xgbe_desc_if {
@@ -924,6 +924,7 @@ struct xgbe_version_data {
unsigned int tx_tstamp_workaround;
unsigned int ecc_support;
unsigned int i2c_support;
unsigned int irq_reissue_support;
};
struct xgbe_prv_data {
@@ -1159,6 +1160,12 @@ struct xgbe_prv_data {
unsigned int lpm_ctrl; /* CTRL1 for resume */
unsigned int isr_as_tasklet;
struct tasklet_struct tasklet_dev;
struct tasklet_struct tasklet_ecc;
struct tasklet_struct tasklet_i2c;
struct tasklet_struct tasklet_an;
#ifdef CONFIG_DEBUG_FS
struct dentry *xgbe_debugfs;