From 505e7fd5d07a7e2b7856050057049399fbbe1186 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Fri, 6 May 2016 18:19:09 +0100 Subject: EmbeddedPkg/Lan9118Dxe: remove redundant stalls Now that the LAN9118-specific MMIO accessors provide the required delays, remove the redundant stalls. Stalls in delay loops are kept, as these give time for work to happen beyond synchronisation of the device register file. Cc: Leif Lindholm Cc: Ryan Harkin Signed-off-by: Mark Rutland Contributed-under: TianoCore Contribution Agreement 1.0 Reviewed-by: Ard Biesheuvel --- EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118Dxe.c | 5 ----- EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118DxeUtil.c | 16 ---------------- 2 files changed, 21 deletions(-) (limited to 'EmbeddedPkg/Drivers') diff --git a/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118Dxe.c b/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118Dxe.c index bef34c2e9c..8af23df394 100644 --- a/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118Dxe.c +++ b/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118Dxe.c @@ -307,8 +307,6 @@ SnpInitialize ( // Write the current configuration to the register Lan9118MmioWrite32 (LAN9118_PMT_CTRL, PmConf); - gBS->Stall (LAN9118_STALL); - gBS->Stall (LAN9118_STALL); // Configure GPIO and HW Status = ConfigureHardware (HW_CONF_USE_LEDS, Snp); @@ -431,7 +429,6 @@ SnpReset ( // Write the current configuration to the register Lan9118MmioWrite32 (LAN9118_PMT_CTRL, PmConf); - gBS->Stall (LAN9118_STALL); // Reactivate the LEDs Status = ConfigureHardware (HW_CONF_USE_LEDS, Snp); @@ -446,7 +443,6 @@ SnpReset ( HwConf |= HW_CFG_TX_FIFO_SIZE(gTxBuffer); // assign size chosen in SnpInitialize Lan9118MmioWrite32 (LAN9118_HW_CFG, HwConf); // Write the conf - gBS->Stall (LAN9118_STALL); } // Enable the receiver and transmitter and clear their contents @@ -701,7 +697,6 @@ SnpReceiveFilters ( // Write the options to the MAC_CSR // IndirectMACWrite32 (INDIRECT_MAC_INDEX_CR, MacCSRValue); - gBS->Stall (LAN9118_STALL); // // If we have to retrieve something, start packet reception. diff --git a/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118DxeUtil.c b/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118DxeUtil.c index 61f11b6e27..50c004d728 100644 --- a/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118DxeUtil.c +++ b/EmbeddedPkg/Drivers/Lan9118Dxe/Lan9118DxeUtil.c @@ -284,7 +284,6 @@ IndirectEEPROMRead32 ( // Write to Eeprom command register Lan9118MmioWrite32 (LAN9118_E2P_CMD, EepromCmd); - gBS->Stall (LAN9118_STALL); // Wait until operation has completed while (Lan9118MmioRead32 (LAN9118_E2P_CMD) & E2P_EPC_BUSY); @@ -332,7 +331,6 @@ IndirectEEPROMWrite32 ( // Write to Eeprom command register Lan9118MmioWrite32 (LAN9118_E2P_CMD, EepromCmd); - gBS->Stall (LAN9118_STALL); // Wait until operation has completed while (Lan9118MmioRead32 (LAN9118_E2P_CMD) & E2P_EPC_BUSY); @@ -410,7 +408,6 @@ Lan9118Initialize ( if (((Lan9118MmioRead32 (LAN9118_PMT_CTRL) & MPTCTRL_PM_MODE_MASK) >> 12) != 0) { DEBUG ((DEBUG_NET, "Waking from reduced power state.\n")); Lan9118MmioWrite32 (LAN9118_BYTE_TEST, 0xFFFFFFFF); - gBS->Stall (LAN9118_STALL); } // Check that device is active @@ -495,7 +492,6 @@ SoftReset ( // Write the configuration Lan9118MmioWrite32 (LAN9118_HW_CFG, HwConf); - gBS->Stall (LAN9118_STALL); // Wait for reset to complete while (Lan9118MmioRead32 (LAN9118_HW_CFG) & HWCFG_SRST) { @@ -590,7 +586,6 @@ ConfigureHardware ( // Write the configuration Lan9118MmioWrite32 (LAN9118_GPIO_CFG, GpioConf); - gBS->Stall (LAN9118_STALL); } return EFI_SUCCESS; @@ -719,7 +714,6 @@ StopTx ( TxCfg = Lan9118MmioRead32 (LAN9118_TX_CFG); TxCfg |= TXCFG_TXS_DUMP | TXCFG_TXD_DUMP; Lan9118MmioWrite32 (LAN9118_TX_CFG, TxCfg); - gBS->Stall (LAN9118_STALL); } // Check if already stopped @@ -738,7 +732,6 @@ StopTx ( if (TxCfg & TXCFG_TX_ON) { TxCfg |= TXCFG_STOP_TX; Lan9118MmioWrite32 (LAN9118_TX_CFG, TxCfg); - gBS->Stall (LAN9118_STALL); // Wait for Tx to finish transmitting while (Lan9118MmioRead32 (LAN9118_TX_CFG) & TXCFG_STOP_TX); @@ -773,7 +766,6 @@ StopRx ( RxCfg = Lan9118MmioRead32 (LAN9118_RX_CFG); RxCfg |= RXCFG_RX_DUMP; Lan9118MmioWrite32 (LAN9118_RX_CFG, RxCfg); - gBS->Stall (LAN9118_STALL); while (Lan9118MmioRead32 (LAN9118_RX_CFG) & RXCFG_RX_DUMP); } @@ -799,28 +791,23 @@ StartTx ( TxCfg = Lan9118MmioRead32 (LAN9118_TX_CFG); TxCfg |= TXCFG_TXS_DUMP | TXCFG_TXD_DUMP; Lan9118MmioWrite32 (LAN9118_TX_CFG, TxCfg); - gBS->Stall (LAN9118_STALL); } // Check if tx was started from MAC and enable if not if (Flags & START_TX_MAC) { MacCsr = IndirectMACRead32 (INDIRECT_MAC_INDEX_CR); - gBS->Stall (LAN9118_STALL); if ((MacCsr & MACCR_TX_EN) == 0) { MacCsr |= MACCR_TX_EN; IndirectMACWrite32 (INDIRECT_MAC_INDEX_CR, MacCsr); - gBS->Stall (LAN9118_STALL); } } // Check if tx was started from TX_CFG and enable if not if (Flags & START_TX_CFG) { TxCfg = Lan9118MmioRead32 (LAN9118_TX_CFG); - gBS->Stall (LAN9118_STALL); if ((TxCfg & TXCFG_TX_ON) == 0) { TxCfg |= TXCFG_TX_ON; Lan9118MmioWrite32 (LAN9118_TX_CFG, TxCfg); - gBS->Stall (LAN9118_STALL); } } @@ -850,14 +837,12 @@ StartRx ( RxCfg = Lan9118MmioRead32 (LAN9118_RX_CFG); RxCfg |= RXCFG_RX_DUMP; Lan9118MmioWrite32 (LAN9118_RX_CFG, RxCfg); - gBS->Stall (LAN9118_STALL); while (Lan9118MmioRead32 (LAN9118_RX_CFG) & RXCFG_RX_DUMP); } MacCsr |= MACCR_RX_EN; IndirectMACWrite32 (INDIRECT_MAC_INDEX_CR, MacCsr); - gBS->Stall (LAN9118_STALL); } return EFI_SUCCESS; @@ -1047,7 +1032,6 @@ ChangeFifoAllocation ( HwConf &= ~(0xF0000); HwConf |= ((TxFifoOption & 0xF) << 16); Lan9118MmioWrite32 (LAN9118_HW_CFG, HwConf); - gBS->Stall (LAN9118_STALL); return EFI_SUCCESS; } -- cgit v1.2.3