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qed: Correct BAR sizes for older MFW

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Driver learns the inner bar sized from a register configured by management
firmware, but older versions are not setting this register.
But since we know which values were configured back then, use them instead.

Signed-off-by: Ram Amrani <Ram.Amrani@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ram Amrani 2016-03-02 20:26:00 +02:00 committed by David S. Miller
parent fb653ebddc
commit c2035eea3e
1 changed files with 29 additions and 13 deletions
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42
drivers/net/ethernet/qlogic/qed/qed_dev.c
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@ -32,6 +32,33 @@
#include "qed_sp.h"
/* API common to all protocols */
enum BAR_ID {
BAR_ID_0, /* used for GRC */
BAR_ID_1 /* Used for doorbells */
};
static u32 qed_hw_bar_size(struct qed_hwfn *p_hwfn,
enum BAR_ID bar_id)
{
u32 bar_reg = (bar_id == BAR_ID_0 ?
PGLUE_B_REG_PF_BAR0_SIZE : PGLUE_B_REG_PF_BAR1_SIZE);
u32 val = qed_rd(p_hwfn, p_hwfn->p_main_ptt, bar_reg);
if (val)
return 1 << (val + 15);
/* Old MFW initialized above registered only conditionally */
if (p_hwfn->cdev->num_hwfns > 1) {
DP_INFO(p_hwfn,
"BAR size not configured. Assuming BAR size of 256kB for GRC and 512kB for DB\n");
return BAR_ID_0 ? 256 * 1024 : 512 * 1024;
} else {
DP_INFO(p_hwfn,
"BAR size not configured. Assuming BAR size of 512kB for GRC and 512kB for DB\n");
return 512 * 1024;
}
}
void qed_init_dp(struct qed_dev *cdev,
u32 dp_module, u8 dp_level)
{
@ -1385,17 +1412,6 @@ err0:
return rc;
}
static u32 qed_hw_bar_size(struct qed_hwfn *p_hwfn,
u8 bar_id)
{
u32 bar_reg = (bar_id == 0 ? PGLUE_B_REG_PF_BAR0_SIZE
: PGLUE_B_REG_PF_BAR1_SIZE);
u32 val = qed_rd(p_hwfn, p_hwfn->p_main_ptt, bar_reg);
/* Get the BAR size(in KB) from hardware given val */
return 1 << (val + 15);
}
int qed_hw_prepare(struct qed_dev *cdev,
int personality)
{
@ -1420,11 +1436,11 @@ int qed_hw_prepare(struct qed_dev *cdev,
u8 __iomem *addr;
/* adjust bar offset for second engine */
addr = cdev->regview + qed_hw_bar_size(p_hwfn, 0) / 2;
addr = cdev->regview + qed_hw_bar_size(p_hwfn, BAR_ID_0) / 2;
p_regview = addr;
/* adjust doorbell bar offset for second engine */
addr = cdev->doorbells + qed_hw_bar_size(p_hwfn, 1) / 2;
addr = cdev->doorbells + qed_hw_bar_size(p_hwfn, BAR_ID_1) / 2;
p_doorbell = addr;
/* prepare second hw function */