net: ipa: use a bitmap for defined endpoints
IPA v5.0 supports more than 32 endpoints, so we will be unable to represent endpoints defined in the configuration data with a 32-bit value. To prepare for that, convert the field in the IPA structure representing defined endpoints to be a Linux bitmap. Convert loops based on that field into for_each_set_bit() calls over the new bitmap. Note that the loop in ipa_endpoint_config() still assumes there are 32 or fewer endpoints (when comparing against the available endpoint bit mask); that assumption goes away in the next patch. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
f298ba785e
commit
9a9f512974
@ -62,7 +62,7 @@ struct ipa_interrupt;
|
||||
* @zero_virt: Virtual address of preallocated zero-filled memory
|
||||
* @zero_size: Size (bytes) of preallocated zero-filled memory
|
||||
* @endpoint_count: Number of endpoints represented by bit masks below
|
||||
* @defined: Bit mask indicating endpoints defined in config data
|
||||
* @defined: Bitmap of endpoints defined in config data
|
||||
* @available: Bit mask indicating endpoints hardware supports
|
||||
* @filter_map: Bit mask indicating endpoints that support filtering
|
||||
* @set_up: Bit mask indicating endpoints set up
|
||||
@ -117,9 +117,9 @@ struct ipa {
|
||||
void *zero_virt;
|
||||
size_t zero_size;
|
||||
|
||||
/* Bit masks indicating endpoint state */
|
||||
/* Bitmaps indicating endpoint state */
|
||||
u32 endpoint_count;
|
||||
u32 defined; /* Defined in configuration data */
|
||||
unsigned long *defined; /* Defined in configuration data */
|
||||
u32 available; /* Supported by hardware */
|
||||
u32 filter_map;
|
||||
u32 set_up;
|
||||
|
@ -459,8 +459,8 @@ void ipa_endpoint_modem_pause_all(struct ipa *ipa, bool enable)
|
||||
/* Reset all modem endpoints to use the default exception endpoint */
|
||||
int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa)
|
||||
{
|
||||
u32 defined = ipa->defined;
|
||||
struct gsi_trans *trans;
|
||||
u32 endpoint_id;
|
||||
u32 count;
|
||||
|
||||
/* We need one command per modem TX endpoint, plus the commands
|
||||
@ -474,14 +474,11 @@ int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa)
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
while (defined) {
|
||||
u32 endpoint_id = __ffs(defined);
|
||||
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count) {
|
||||
struct ipa_endpoint *endpoint;
|
||||
const struct ipa_reg *reg;
|
||||
u32 offset;
|
||||
|
||||
defined ^= BIT(endpoint_id);
|
||||
|
||||
/* We only reset modem TX endpoints */
|
||||
endpoint = &ipa->endpoint[endpoint_id];
|
||||
if (!(endpoint->ee_id == GSI_EE_MODEM && endpoint->toward_ipa))
|
||||
@ -1823,16 +1820,11 @@ static void ipa_endpoint_teardown_one(struct ipa_endpoint *endpoint)
|
||||
|
||||
void ipa_endpoint_setup(struct ipa *ipa)
|
||||
{
|
||||
u32 defined = ipa->defined;
|
||||
u32 endpoint_id;
|
||||
|
||||
ipa->set_up = 0;
|
||||
while (defined) {
|
||||
u32 endpoint_id = __ffs(defined);
|
||||
|
||||
defined ^= BIT(endpoint_id);
|
||||
|
||||
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count)
|
||||
ipa_endpoint_setup_one(&ipa->endpoint[endpoint_id]);
|
||||
}
|
||||
}
|
||||
|
||||
void ipa_endpoint_teardown(struct ipa *ipa)
|
||||
@ -1853,10 +1845,10 @@ int ipa_endpoint_config(struct ipa *ipa)
|
||||
{
|
||||
struct device *dev = &ipa->pdev->dev;
|
||||
const struct ipa_reg *reg;
|
||||
u32 endpoint_id;
|
||||
u32 tx_count;
|
||||
u32 rx_count;
|
||||
u32 rx_base;
|
||||
u32 defined;
|
||||
u32 limit;
|
||||
u32 val;
|
||||
|
||||
@ -1896,13 +1888,9 @@ int ipa_endpoint_config(struct ipa *ipa)
|
||||
/* Mark all supported RX and TX endpoints as available */
|
||||
ipa->available = GENMASK(limit - 1, rx_base) | GENMASK(tx_count - 1, 0);
|
||||
|
||||
defined = ipa->defined;
|
||||
while (defined) {
|
||||
u32 endpoint_id = __ffs(defined);
|
||||
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count) {
|
||||
struct ipa_endpoint *endpoint;
|
||||
|
||||
defined ^= BIT(endpoint_id);
|
||||
|
||||
if (endpoint_id >= limit) {
|
||||
dev_err(dev, "invalid endpoint id, %u > %u\n",
|
||||
endpoint_id, limit - 1);
|
||||
@ -1954,27 +1942,26 @@ static void ipa_endpoint_init_one(struct ipa *ipa, enum ipa_endpoint_name name,
|
||||
endpoint->toward_ipa = data->toward_ipa;
|
||||
endpoint->config = data->endpoint.config;
|
||||
|
||||
ipa->defined |= BIT(endpoint->endpoint_id);
|
||||
__set_bit(endpoint->endpoint_id, ipa->defined);
|
||||
}
|
||||
|
||||
static void ipa_endpoint_exit_one(struct ipa_endpoint *endpoint)
|
||||
{
|
||||
endpoint->ipa->defined &= ~BIT(endpoint->endpoint_id);
|
||||
__clear_bit(endpoint->endpoint_id, endpoint->ipa->defined);
|
||||
|
||||
memset(endpoint, 0, sizeof(*endpoint));
|
||||
}
|
||||
|
||||
void ipa_endpoint_exit(struct ipa *ipa)
|
||||
{
|
||||
u32 defined = ipa->defined;
|
||||
|
||||
while (defined) {
|
||||
u32 endpoint_id = __fls(defined);
|
||||
|
||||
defined ^= BIT(endpoint_id);
|
||||
u32 endpoint_id;
|
||||
|
||||
for_each_set_bit(endpoint_id, ipa->defined, ipa->endpoint_count)
|
||||
ipa_endpoint_exit_one(&ipa->endpoint[endpoint_id]);
|
||||
}
|
||||
|
||||
bitmap_free(ipa->defined);
|
||||
ipa->defined = NULL;
|
||||
|
||||
memset(ipa->name_map, 0, sizeof(ipa->name_map));
|
||||
memset(ipa->channel_map, 0, sizeof(ipa->channel_map));
|
||||
}
|
||||
@ -1993,7 +1980,10 @@ u32 ipa_endpoint_init(struct ipa *ipa, u32 count,
|
||||
if (!ipa->endpoint_count)
|
||||
return 0; /* Error */
|
||||
|
||||
ipa->defined = 0;
|
||||
/* Initialize the defined endpoint bitmap */
|
||||
ipa->defined = bitmap_zalloc(ipa->endpoint_count, GFP_KERNEL);
|
||||
if (!ipa->defined)
|
||||
return 0; /* Error */
|
||||
|
||||
filter_map = 0;
|
||||
for (name = 0; name < count; name++, data++) {
|
||||
|
Loading…
Reference in New Issue
Block a user