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msm: ipa: Fix updating the doobell for WDI3

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For WDI3, requirement is to ring the event ring DB
with a value outside of the ring. Currently we are taking the
event_ring_size from non SMMU structure which is incorrect.
Make a chane to use the value based on SMMU enablement.
Also make change to ring the DB with the below logic.
Event ring base addr + Event ring size + 1 element size.

Change-Id: Ie9e4cad63070d1488d0a36f9d08279d2d566055a
Signed-off-by: Chaitanya Pratapa <cpratapa@codeaurora.org>
This commit is contained in:
Chaitanya Pratapa 2020-05-04 16:51:07 -07:00 committed by Bojun Pan
parent 2451522301
commit 7b304439c6
1 changed files with 19 additions and 5 deletions
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24
drivers/platform/msm/ipa/ipa_v3/ipa_wdi3_i.c
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@ -446,7 +446,7 @@ int ipa3_conn_wdi3_pipes(struct ipa_wdi_conn_in_params *in,
int result = 0;
u32 gsi_db_addr_low, gsi_db_addr_high;
void __iomem *db_addr;
u32 evt_ring_db_addr_low, evt_ring_db_addr_high;
u32 evt_ring_db_addr_low, evt_ring_db_addr_high, db_val = 0;
/* wdi3 only support over gsi */
if (ipa3_get_wdi_version() != IPA_WDI_3) {
@ -612,11 +612,18 @@ int ipa3_conn_wdi3_pipes(struct ipa_wdi_conn_in_params *in,
* initialization of the event, with a value that is
* outside of the ring range. Eg: ring base = 0x1000,
* ring size = 0x100 => AP can write value > 0x1100
* into the doorbell address. Eg: 0x 1110
* into the doorbell address. Eg: 0x 1110.
* Use event ring base addr + event ring size + 1 element size.
*/
iowrite32(in->u_rx.rx.event_ring_size / 4 + 10, db_addr);
db_val = (u32)ep_rx->gsi_mem_info.evt_ring_base_addr;
db_val += ((in->is_smmu_enabled) ? in->u_rx.rx_smmu.event_ring_size :
in->u_rx.rx.event_ring_size);
db_val += GSI_EVT_RING_RE_SIZE_8B;
iowrite32(db_val, db_addr);
gsi_query_evt_ring_db_addr(ep_tx->gsi_evt_ring_hdl,
&evt_ring_db_addr_low, &evt_ring_db_addr_high);
IPADBG("RX base_addr 0x%x evt wp val: 0x%x\n",
ep_rx->gsi_mem_info.evt_ring_base_addr, db_val);
/* only 32 bit lsb is used */
db_addr = ioremap((phys_addr_t)(evt_ring_db_addr_low), 4);
@ -626,9 +633,16 @@ int ipa3_conn_wdi3_pipes(struct ipa_wdi_conn_in_params *in,
* outside of the ring range. Eg: ring base = 0x1000,
* ring size = 0x100 => AP can write value > 0x1100
* into the doorbell address. Eg: 0x 1110
* Use event ring base addr + event ring size + 1 element size.
*/
iowrite32(in->u_tx.tx.event_ring_size / 4 + 10, db_addr);
db_val = (u32)ep_tx->gsi_mem_info.evt_ring_base_addr;
db_val += ((in->is_smmu_enabled) ? in->u_tx.tx_smmu.event_ring_size :
in->u_tx.tx.event_ring_size);
db_val += GSI_EVT_RING_RE_SIZE_16B;
iowrite32(db_val, db_addr);
IPADBG("db_addr %u TX base_addr 0x%x evt wp val: 0x%x\n",
evt_ring_db_addr_low,
ep_tx->gsi_mem_info.evt_ring_base_addr, db_val);
fail:
IPA_ACTIVE_CLIENTS_DEC_SIMPLE();
return result;