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net: ipa: encapsulate updating the COUNTER_CFG register

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Create a new function that encapsulates setting the counter
configuration register value for versions prior to IPA v4.5.
Create another small function to represent configuring hardware
timing regardless of version.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alex Elder 2022-09-22 17:20:59 -05:00 committed by Jakub Kicinski
parent b24627b1d9
commit 1e5db0965e
1 changed files with 22 additions and 13 deletions
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35
drivers/net/ipa/ipa_main.c
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@ -306,6 +306,27 @@ static void ipa_qtime_config(struct ipa *ipa)
iowrite32(val, ipa->reg_virt + IPA_REG_TIMERS_XO_CLK_DIV_CFG_OFFSET);
}
/* Before IPA v4.5 timing is controlled by a counter register */
static void ipa_hardware_config_counter(struct ipa *ipa)
{
u32 granularity;
u32 val;
granularity = ipa_aggr_granularity_val(IPA_AGGR_GRANULARITY);
val = u32_encode_bits(granularity, AGGR_GRANULARITY_FMASK);
iowrite32(val, ipa->reg_virt + IPA_REG_COUNTER_CFG_OFFSET);
}
static void ipa_hardware_config_timing(struct ipa *ipa)
{
if (ipa->version < IPA_VERSION_4_5)
ipa_hardware_config_counter(ipa);
else
ipa_qtime_config(ipa);
}
static void ipa_hardware_config_hashing(struct ipa *ipa)
{
u32 offset;
@ -362,7 +383,6 @@ static void ipa_hardware_dcd_deconfig(struct ipa *ipa)
static void ipa_hardware_config(struct ipa *ipa, const struct ipa_data *data)
{
enum ipa_version version = ipa->version;
u32 granularity;
u32 val;
/* IPA v4.5+ has no backward compatibility register */
@ -389,19 +409,8 @@ static void ipa_hardware_config(struct ipa *ipa, const struct ipa_data *data)
iowrite32(val, ipa->reg_virt + IPA_REG_CLKON_CFG_OFFSET);
ipa_hardware_config_comp(ipa);
/* Configure system bus limits */
ipa_hardware_config_qsb(ipa, data);
if (version < IPA_VERSION_4_5) {
/* Configure aggregation timer granularity */
granularity = ipa_aggr_granularity_val(IPA_AGGR_GRANULARITY);
val = u32_encode_bits(granularity, AGGR_GRANULARITY_FMASK);
iowrite32(val, ipa->reg_virt + IPA_REG_COUNTER_CFG_OFFSET);
} else {
ipa_qtime_config(ipa);
}
ipa_hardware_config_timing(ipa);
ipa_hardware_config_hashing(ipa);
ipa_hardware_dcd_config(ipa);
}