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net: ipa: use a bitmap for enabled endpoints 

Replace the 32-bit unsigned used to track enabled endpoints with a
Linux bitmap, to allow an arbitrary number of endpoints to be
represented.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2022-11-02 17:11:39 -05:00 committed by David S. Miller
parent ae5108e9b7
commit 9b7a006536
2 changed files with 22 additions and 14 deletions
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4
drivers/net/ipa/ipa.h
View File

@ -67,7 +67,7 @@ struct ipa_interrupt;
* @available: Bitmap of endpoints supported by hardware
* @filtered: Bitmap of endpoints that support filtering
* @set_up: Bitmap of endpoints that are set up for use
* @enabled: Bit mask indicating endpoints enabled
* @enabled: Bitmap of currently enabled endpoints
* @modem_tx_count: Number of defined modem TX endoints
* @endpoint: Array of endpoint information
* @channel_map: Mapping of GSI channel to IPA endpoint
@ -125,7 +125,7 @@ struct ipa {
unsigned long *available; /* Supported by hardware */
u64 filtered; /* Support filtering (AP and modem) */
unsigned long *set_up;
u32 enabled;
unsigned long *enabled;
u32 modem_tx_count;
struct ipa_endpoint endpoint[IPA_ENDPOINT_MAX];

32
drivers/net/ipa/ipa_endpoint.c
View File

@ -1666,6 +1666,7 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint)
int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint)
{
u32 endpoint_id = endpoint->endpoint_id;
struct ipa *ipa = endpoint->ipa;
struct gsi *gsi = &ipa->gsi;
int ret;
@ -1675,37 +1676,35 @@ int ipa_endpoint_enable_one(struct ipa_endpoint *endpoint)
dev_err(&ipa->pdev->dev,
"error %d starting %cX channel %u for endpoint %u\n",
ret, endpoint->toward_ipa ? 'T' : 'R',
endpoint->channel_id, endpoint->endpoint_id);
endpoint->channel_id, endpoint_id);
return ret;
}
if (!endpoint->toward_ipa) {
ipa_interrupt_suspend_enable(ipa->interrupt,
endpoint->endpoint_id);
ipa_interrupt_suspend_enable(ipa->interrupt, endpoint_id);
ipa_endpoint_replenish_enable(endpoint);
}
ipa->enabled |= BIT(endpoint->endpoint_id);
__set_bit(endpoint_id, ipa->enabled);
return 0;
}
void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint)
{
u32 mask = BIT(endpoint->endpoint_id);
u32 endpoint_id = endpoint->endpoint_id;
struct ipa *ipa = endpoint->ipa;
struct gsi *gsi = &ipa->gsi;
int ret;
if (!(ipa->enabled & mask))
if (!test_bit(endpoint_id, ipa->enabled))
return;
ipa->enabled ^= mask;
__clear_bit(endpoint_id, endpoint->ipa->enabled);
if (!endpoint->toward_ipa) {
ipa_endpoint_replenish_disable(endpoint);
ipa_interrupt_suspend_disable(ipa->interrupt,
endpoint->endpoint_id);
ipa_interrupt_suspend_disable(ipa->interrupt, endpoint_id);
}
/* Note that if stop fails, the channel's state is not well-defined */
@ -1713,7 +1712,7 @@ void ipa_endpoint_disable_one(struct ipa_endpoint *endpoint)
if (ret)
dev_err(&ipa->pdev->dev,
"error %d attempting to stop endpoint %u\n", ret,
endpoint->endpoint_id);
endpoint_id);
}
void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint)
@ -1722,7 +1721,7 @@ void ipa_endpoint_suspend_one(struct ipa_endpoint *endpoint)
struct gsi *gsi = &endpoint->ipa->gsi;
int ret;
if (!(endpoint->ipa->enabled & BIT(endpoint->endpoint_id)))
if (!test_bit(endpoint->endpoint_id, endpoint->ipa->enabled))
return;
if (!endpoint->toward_ipa) {
@ -1742,7 +1741,7 @@ void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint)
struct gsi *gsi = &endpoint->ipa->gsi;
int ret;
if (!(endpoint->ipa->enabled & BIT(endpoint->endpoint_id)))
if (!test_bit(endpoint->endpoint_id, endpoint->ipa->enabled))
return;
if (!endpoint->toward_ipa)
@ -1971,6 +1970,8 @@ void ipa_endpoint_exit(struct ipa *ipa)
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count)
ipa_endpoint_exit_one(&ipa->endpoint[endpoint_id]);
bitmap_free(ipa->enabled);
ipa->enabled = NULL;
bitmap_free(ipa->set_up);
ipa->set_up = NULL;
bitmap_free(ipa->defined);
@ -2003,6 +2004,10 @@ int ipa_endpoint_init(struct ipa *ipa, u32 count,
if (!ipa->set_up)
goto err_free_defined;
ipa->enabled = bitmap_zalloc(ipa->endpoint_count, GFP_KERNEL);
if (!ipa->enabled)
goto err_free_set_up;
filtered = 0;
for (name = 0; name < count; name++, data++) {
if (ipa_gsi_endpoint_data_empty(data))
@ -2027,6 +2032,9 @@ int ipa_endpoint_init(struct ipa *ipa, u32 count,
return 0;
err_free_set_up:
bitmap_free(ipa->set_up);
ipa->set_up = NULL;
err_free_defined:
bitmap_free(ipa->defined);
ipa->defined = NULL;