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msm: eva: Flush EVA CPU DDR transactions

Telusuri Sumber 
Before power collapsing EVA subsystem.

Change-Id: I84ea3278a3229346677cc28d2aec1e62bbe5868c
Signed-off-by: George Shen <sqiao@codeaurora.org>
This commit is contained in:
George Shen
2021-08-23 19:32:52 -07:00
orang tua d7fcae03ee
melakukan 3eaf705b30
2 mengubah file dengan 38 tambahan dan 3 penghapusan
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38
msm/eva/cvp_hfi.c
Melihat File

@@ -3862,6 +3862,7 @@ exit:
static int __power_off_controller(struct iris_hfi_device *device)
{
u32 lpi_status, reg_status = 0, count = 0, max_count = 1000;
u32 sbm_ln0_low;
/* HPG 6.2.2 Step 1 */
__write_register(device, CVP_CPU_CS_X2RPMh, 0x3);
@@ -3873,12 +3874,12 @@ static int __power_off_controller(struct iris_hfi_device *device)
__read_register(device,
CVP_AON_WRAPPER_MVP_NOC_LPI_STATUS);
reg_status = lpi_status & BIT(0);
/* Wait for noc lpi status to be set */
/* Wait for Core noc lpi status to be set */
usleep_range(50, 100);
count++;
}
dprintk(CVP_PWR,
"Noc: lpi_status %x noc_status %x (count %d)\n",
"Core Noc: lpi_status %x noc_status %x (count %d)\n",
lpi_status, reg_status, count);
if (count == max_count) {
u32 pc_ready, wfi_status;
@@ -3887,12 +3888,43 @@ static int __power_off_controller(struct iris_hfi_device *device)
pc_ready = __read_register(device, CVP_CTRL_STATUS);
dprintk(CVP_WARN,
"NOC not in qaccept status %x %x %x %x\n",
"Core NOC not in qaccept status %x %x %x %x\n",
reg_status, lpi_status, wfi_status, pc_ready);
__print_sidebandmanager_regs(device);
}
/* New addition to put CPU/Tensilica to low power */
reg_status = 0;
count = 0;
__write_register(device, CVP_WRAPPER_CPU_NOC_LPI_CONTROL, 0x1);
while (!reg_status && count < max_count) {
lpi_status =
__read_register(device,
CVP_WRAPPER_CPU_NOC_LPI_STATUS);
reg_status = lpi_status & BIT(0);
/* Wait for CPU noc lpi status to be set */
usleep_range(50, 100);
count++;
}
sbm_ln0_low = __read_register(device, CVP_NOC_SBM_SENSELN0_LOW);
dprintk(CVP_PWR,
"CPU Noc: lpi_status %x noc_status %x (count %d) 0x%x\n",
lpi_status, reg_status, count, sbm_ln0_low);
if (count == max_count) {
u32 pc_ready, wfi_status;
wfi_status = __read_register(device, CVP_WRAPPER_CPU_STATUS);
pc_ready = __read_register(device, CVP_CTRL_STATUS);
dprintk(CVP_WARN,
"CPU NOC not in qaccept status %x %x %x %x\n",
reg_status, lpi_status, wfi_status, pc_ready);
__print_sidebandmanager_regs(device);
}
/* HPG 6.2.2 Step 3, debug bridge to low power BYPASSED */
/* HPG 6.2.2 Step 4, debug bridge to lpi release */

3
msm/eva/cvp_hfi_io.h
Melihat File

@@ -115,6 +115,8 @@
#define CVP_WRAPPER_CPU_CLOCK_CONFIG (CVP_WRAPPER_BASE_OFFS + 0x50)
#define CVP_WRAPPER_DEBUG_BRIDGE_LPI_CONTROL (CVP_WRAPPER_BASE_OFFS + 0x54)
#define CVP_WRAPPER_DEBUG_BRIDGE_LPI_STATUS (CVP_WRAPPER_BASE_OFFS + 0x58)
#define CVP_WRAPPER_CPU_NOC_LPI_CONTROL (CVP_WRAPPER_BASE_OFFS + 0x5C)
#define CVP_WRAPPER_CPU_NOC_LPI_STATUS (CVP_WRAPPER_BASE_OFFS + 0x60)
#define CVP_WRAPPER_CORE_CLOCK_CONFIG (CVP_WRAPPER_BASE_OFFS + 0x88)
#define CVP_CTRL_INIT CVP_CPU_CS_SCIACMD
@@ -184,6 +186,7 @@
#define CVP_NOC_ERR_ERRLOG3_LOW_OFFS (CVP_NOC_BASE_OFFS + 0xB8)
#define CVP_NOC_ERR_ERRLOG3_HIGH_OFFS (CVP_NOC_BASE_OFFS + 0xBC)
#define CVP_NOC_SBM_SENSELN0_LOW (CVP_NOC_BASE_OFFS + 0x300)
#define CVP_NOC_CPU_PENDING_MASK 0x3F80000
#define CVP_NOC_CORE_BASE_OFFS 0x00010000
#define CVP_NOC_MAIN_SIDEBANDMANAGER_SENSELN0_LOW \