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rt-thread/bsp/loongson/ls2kdev/drivers/net/synopGMAC_Dev.c

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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-08-24 chinesebear first version
* 2020-08-10 lizhirui porting to ls2k
*/
#include "synopGMAC_Dev.h"
#include <rthw.h>
#include <rtthread.h>
#define UNUSED 1
/**
* Function to set the MDC clock for mdio transactiona
*
* @param[in] pointer to device structure.
* @param[in] clk divider value.
* \return Reuturns 0 on success else return the error value.
*/
s32 synopGMAC_set_mdc_clk_div(synopGMACdevice *gmacdev, u32 clk_div_val)
{
u32 orig_data;
orig_data = synopGMACReadReg(gmacdev -> MacBase, GmacGmiiAddr); //set the mdc clock to the user defined value
orig_data &= (~GmiiCsrClkMask);
orig_data |= clk_div_val;
synopGMACWriteReg(gmacdev -> MacBase, GmacGmiiAddr, orig_data);
return 0;
}
/**
* Returns the current MDC divider value programmed in the ip.
*
* @param[in] pointer to device structure.
* @param[in] clk divider value.
* \return Returns the MDC divider value read.
*/
u32 synopGMAC_get_mdc_clk_div(synopGMACdevice *gmacdev)
{
u32 data;
data = synopGMACReadReg(gmacdev->MacBase, GmacGmiiAddr);
data &= GmiiCsrClkMask;
return data;
}
/**
* Function to read the Phy register. The access to phy register
* is a slow process as the data is moved accross MDI/MDO interface
* @param[in] pointer to Register Base (It is the mac base in our case) .
* @param[in] PhyBase register is the index of one of supported 32 PHY devices.
* @param[in] Register offset is the index of one of the 32 phy register.
* @param[out] u16 data read from the respective phy register (only valid iff return value is 0).
* \return Returns 0 on success else return the error status.
*/
s32 synopGMAC_read_phy_reg(u64 RegBase, u32 PhyBase, u32 RegOffset, u16 *data)
{
u64 addr;
u32 loop_variable;
addr = ((PhyBase << GmiiDevShift) & GmiiDevMask) | ((RegOffset << GmiiRegShift) & GmiiRegMask)
| GmiiCsrClk3; //sw: add GmiiCsrClk
addr = addr | GmiiBusy ; //Gmii busy bit
synopGMACWriteReg(RegBase, GmacGmiiAddr, addr);
//write the address from where the data to be read in GmiiGmiiAddr register of synopGMAC ip
for (loop_variable = 0; loop_variable < DEFAULT_LOOP_VARIABLE; loop_variable++)
{
//Wait till the busy bit gets cleared within a certain amount of time
if (!(synopGMACReadReg(RegBase, GmacGmiiAddr) & GmiiBusy))
{
break;
}
plat_delay(DEFAULT_DELAY_VARIABLE);
}
if (loop_variable < DEFAULT_LOOP_VARIABLE)
{
*data = (u16)(synopGMACReadReg(RegBase, GmacGmiiData) & 0xFFFF);
}
else
{
TR("Error::: PHY not responding Busy bit didnot get cleared !!!!!!\n");
return -ESYNOPGMACPHYERR;
}
//sw
#if SYNOP_REG_DEBUG
printf("read phy reg: offset = 0x%x\tdata = 0x%x\n", RegOffset, *data);
#endif
return -ESYNOPGMACNOERR;
}
/**
* Function to write to the Phy register. The access to phy register
* is a slow process as the data is moved accross MDI/MDO interface
* @param[in] pointer to Register Base (It is the mac base in our case) .
* @param[in] PhyBase register is the index of one of supported 32 PHY devices.
* @param[in] Register offset is the index of one of the 32 phy register.
* @param[in] data to be written to the respective phy register.
* \return Returns 0 on success else return the error status.
*/
s32 synopGMAC_write_phy_reg(u64 RegBase, u32 PhyBase, u32 RegOffset, u16 data)
{
u32 addr;
u32 loop_variable;
synopGMACWriteReg(RegBase, GmacGmiiData, data); // write the data in to GmacGmiiData register of synopGMAC ip
addr = ((PhyBase << GmiiDevShift) & GmiiDevMask) | ((RegOffset << GmiiRegShift) & GmiiRegMask) | GmiiWrite | GmiiCsrClk3; //sw: add GmiiCsrclk
addr = addr | GmiiBusy ; //set Gmii clk to 20-35 Mhz and Gmii busy bit
synopGMACWriteReg(RegBase, GmacGmiiAddr, addr);
for (loop_variable = 0; loop_variable < DEFAULT_LOOP_VARIABLE; loop_variable++)
{
if (!(synopGMACReadReg(RegBase, GmacGmiiAddr) & GmiiBusy))
{
break;
}
plat_delay(DEFAULT_DELAY_VARIABLE);
}
if (loop_variable < DEFAULT_LOOP_VARIABLE)
{
return -ESYNOPGMACNOERR;
}
else
{
TR("Error::: PHY not responding Busy bit didnot get cleared !!!!!!\n");
return -ESYNOPGMACPHYERR;
}
#if SYNOP_REG_DEBUG
printf("write phy reg: offset = 0x%x\tdata = 0x%x", RegOffset, data);
#endif
}
/**
* Function to configure the phy in loopback mode.
*
* @param[in] pointer to synopGMACdevice.
* @param[in] enable or disable the loopback.
* \return 0 on success else return the error status.
* \note Don't get confused with mac loop-back synopGMAC_loopback_on(synopGMACdevice *)
* and synopGMAC_loopback_off(synopGMACdevice *) functions.
*/
#if UNUSED
s32 synopGMAC_phy_loopback(synopGMACdevice *gmacdev, bool loopback)
{
s32 status = -ESYNOPGMACNOERR;
u16 temp;
status = synopGMAC_read_phy_reg(gmacdev -> MacBase, gmacdev -> PhyBase, PHY_CONTROL_REG, &temp);
if (loopback)
{
temp |= 0x4000;
}
else
{
temp = temp;
}
status = synopGMAC_write_phy_reg(gmacdev -> MacBase, gmacdev -> PhyBase, PHY_CONTROL_REG, temp);
return status;
}
#endif
/**
* Function to read the GMAC IP Version and populates the same in device data structure.
* @param[in] pointer to synopGMACdevice.
* \return Always return 0.
*/
s32 synopGMAC_read_version(synopGMACdevice *gmacdev)
{
u32 data = 0;
data = synopGMACReadReg(gmacdev -> MacBase, GmacVersion);
gmacdev -> Version = data;
return 0;
}
/**
* Function to reset the GMAC core.
* This reests the DMA and GMAC core. After reset all the registers holds their respective reset value
* @param[in] pointer to synopGMACdevice.
* \return 0 on success else return the error status.
*/
s32 synopGMAC_reset(synopGMACdevice *gmacdev)
{
u32 data = 0;
synopGMACWriteReg(gmacdev -> DmaBase, DmaBusMode, DmaResetOn);
plat_delay(DEFAULT_LOOP_VARIABLE);
data = synopGMACReadReg(gmacdev -> DmaBase, DmaBusMode);
TR("DATA after Reset = %08x\n", data);
return 0;
}
/**
* Function to program DMA bus mode register.
*
* The Bus Mode register is programmed with the value given. The bits to be set are
* bit wise or'ed and sent as the second argument to this function.
* @param[in] pointer to synopGMACdevice.
* @param[in] the data to be programmed.
* \return 0 on success else return the error status.
*/
s32 synopGMAC_dma_bus_mode_init(synopGMACdevice *gmacdev, u32 init_value)
{
synopGMACWriteReg(gmacdev -> DmaBase, DmaBusMode, init_value);
return 0;
}
/**
* Function to program DMA Control register(Operation Mode Register 0x18).
*
* The Dma Control register is programmed with the value given. The bits to be set are
* bit wise or'ed and sent as the second argument to this function.
* @param[in] pointer to synopGMACdevice.
* @param[in] the data to be programmed.
* \return 0 on success else return the error status.
*/
s32 synopGMAC_dma_control_init(synopGMACdevice *gmacdev, u32 init_value)
{
synopGMACWriteReg(gmacdev -> DmaBase, DmaControl, init_value);
return 0;
}
/*Gmac configuration functions*/
/**
* Enable the watchdog timer on the receiver.
* When enabled, Gmac enables Watchdog timer, and GMAC allows no more than
* 2048 bytes of data (10,240 if Jumbo frame enabled).
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_wd_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacWatchdog);
return;
}
/**
* Disable the watchdog timer on the receiver.
* When disabled, Gmac disabled watchdog timer, and can receive frames up to
* 16,384 bytes.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_wd_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacWatchdog);
return;
}
/**
* Enables the Jabber frame support.
* When enabled, GMAC disabled the jabber timer, and can transfer 16,384 byte frames.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_jab_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacJabber);
return;
}
/**
* Disables the Jabber frame support.
* When disabled, GMAC enables jabber timer. It cuts of transmitter if application
* sends more than 2048 bytes of data (10240 if Jumbo frame enabled).
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_jab_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacJabber);
return;
}
#endif
/**
* Enables Frame bursting (Only in Half Duplex Mode).
* When enabled, GMAC allows frame bursting in GMII Half Duplex mode.
* Reserved in 10/100 and Full-Duplex configurations.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_frame_burst_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacFrameBurst);
return;
}
/**
* Disables Frame bursting.
* When Disabled, frame bursting is not supported.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_frame_burst_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacFrameBurst);
return;
}
#endif
/**
* Enable Jumbo frame support.
* When Enabled GMAC supports jumbo frames of 9018/9022(VLAN tagged).
* Giant frame error is not reported in receive frame status.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_jumbo_frame_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacJumboFrame);
return;
}
#endif
/**
* Disable Jumbo frame support.
* When Disabled GMAC does not supports jumbo frames.
* Giant frame error is reported in receive frame status.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_jumbo_frame_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacJumboFrame);
return;
}
/**
* Disable Carrier sense.
* When Disabled GMAC ignores CRS signal during frame transmission
* in half duplex mode.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_disable_crs(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacDisableCrs);
return;
}
#endif
/**
* Selects the GMII port.
* When called GMII (1000Mbps) port is selected (programmable only in 10/100/1000 Mbps configuration).
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_select_gmii(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacMiiGmii);
return;
}
/**
* Selects the MII port.
* When called MII (10/100Mbps) port is selected (programmable only in 10/100/1000 Mbps configuration).
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_select_mii(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacMiiGmii);
return;
}
/**
* Enables Receive Own bit (Only in Half Duplex Mode).
* When enaled GMAC receives all the packets given by phy while transmitting.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_rx_own_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacRxOwn);
return;
}
/**
* Disables Receive Own bit (Only in Half Duplex Mode).
* When enaled GMAC disables the reception of frames when gmii_txen_o is asserted.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_rx_own_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacRxOwn);
return;
}
#endif
/**
* Sets the GMAC in loopback mode.
* When on GMAC operates in loop-back mode at GMII/MII.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note (G)MII Receive clock is required for loopback to work properly, as transmit clock is
* not looped back internally.
*/
void synopGMAC_loopback_on(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacLoopback);
return;
}
/**
* Sets the GMAC in Normal mode.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_loopback_off(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacLoopback);
return;
}
/**
* Sets the GMAC core in Full-Duplex mode.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_set_full_duplex(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacDuplex);
return;
}
/**
* Sets the GMAC core in Half-Duplex mode.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_set_half_duplex(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacDuplex);
return;
}
/**
* GMAC tries retransmission (Only in Half Duplex mode).
* If collision occurs on the GMII/MII, GMAC attempt retries based on the
* back off limit configured.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note This function is tightly coupled with synopGMAC_back_off_limit(synopGMACdev *, u32).
*/
void synopGMAC_retry_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacRetry);
return;
}
/**
* GMAC tries only one transmission (Only in Half Duplex mode).
* If collision occurs on the GMII/MII, GMAC will ignore the current frami
* transmission and report a frame abort with excessive collision in tranmit frame status.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_retry_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacRetry);
return;
}
#endif
/**
* GMAC strips the Pad/FCS field of incoming frames.
* This is true only if the length field value is less than or equal to
* 1500 bytes. All received frames with length field greater than or equal to
* 1501 bytes are passed to the application without stripping the Pad/FCS field.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_pad_crc_strip_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacPadCrcStrip);
return;
}
#endif
/**
* GMAC doesnot strips the Pad/FCS field of incoming frames.
* GMAC will pass all the incoming frames to Host unmodified.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_pad_crc_strip_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacPadCrcStrip);
u32 status = synopGMACReadReg(gmacdev -> MacBase, GmacConfig);
DEBUG_MES("strips status : %u\n", status & GmacPadCrcStrip);
return;
}
/**
* GMAC programmed with the back off limit value.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note This function is tightly coupled with synopGMAC_retry_enable(synopGMACdevice * gmacdev)
*/
void synopGMAC_back_off_limit(synopGMACdevice *gmacdev, u32 value)
{
u32 data;
data = synopGMACReadReg(gmacdev -> MacBase, GmacConfig);
data &= (~GmacBackoffLimit);
data |= value;
synopGMACWriteReg(gmacdev -> MacBase, GmacConfig, data);
return;
}
/**
* Enables the Deferral check in GMAC (Only in Half Duplex mode)
* GMAC issues a Frame Abort Status, along with the excessive deferral error bit set in the
* transmit frame status when transmit state machine is deferred for more than
* - 24,288 bit times in 10/100Mbps mode
* - 155,680 bit times in 1000Mbps mode or Jumbo frame mode in 10/100Mbps operation.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note Deferral begins when transmitter is ready to transmit, but is prevented because of
* an active CRS (carrier sense)
*/
#if UNUSED
void synopGMAC_deferral_check_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacDeferralCheck);
return;
}
#endif
/**
* Disables the Deferral check in GMAC (Only in Half Duplex mode).
* GMAC defers until the CRS signal goes inactive.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_deferral_check_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacDeferralCheck);
return;
}
/**
* Enable the reception of frames on GMII/MII.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_rx_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacRx);
return;
}
/**
* Disable the reception of frames on GMII/MII.
* GMAC receive state machine is disabled after completion of reception of current frame.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_rx_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacRx);
return;
}
#endif
/**
* Enable the transmission of frames on GMII/MII.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_tx_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacTx);
return;
}
/**
* Disable the transmission of frames on GMII/MII.
* GMAC transmit state machine is disabled after completion of transmission of current frame.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_tx_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacConfig, GmacTx);
return;
}
#endif
/*Receive frame filter configuration functions*/
/**
* Disables reception of all the frames to application.
* GMAC passes only those received frames to application which
* pass SA/DA address filtering.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_frame_filter_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacFilter);
return;
}
/**
* Enables reception of all the frames to application.
* GMAC passes all the frames received to application irrespective of whether they
* pass SA/DA address filtering or not.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_frame_filter_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacFilter);
return;
}
/**
* Populates the Hash High register with the data supplied.
* This function is called when the Hash filtering is to be enabled.
* @param[in] pointer to synopGMACdevice.
* @param[in] data to be written to hash table high register.
* \return void.
*/
#if UNUSED
void synopGMAC_write_hash_table_high(synopGMACdevice *gmacdev, u32 data)
{
synopGMACWriteReg(gmacdev -> MacBase, GmacHashHigh, data);
return;
}
#endif
/**
* Populates the Hash Low register with the data supplied.
* This function is called when the Hash filtering is to be enabled.
* @param[in] pointer to synopGMACdevice.
* @param[in] data to be written to hash table low register.
* \return void.
*/
#if UNUSED
void synopGMAC_write_hash_table_low(synopGMACdevice *gmacdev, u32 data)
{
synopGMACWriteReg(gmacdev -> MacBase, GmacHashLow, data);
return;
}
#endif
/**
* Enables Hash or Perfect filter (only if Hash filter is enabled in H/W).
* Only frames matching either perfect filtering or Hash Filtering as per HMC and HUC
* configuration are sent to application.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_hash_perfect_filter_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacHashPerfectFilter);
return;
}
#endif
/**
* Enables only Hash(only if Hash filter is enabled in H/W).
* Only frames matching Hash Filtering as per HMC and HUC
* configuration are sent to application.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_Hash_filter_only_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacHashPerfectFilter);
return;
}
#endif
/**
* Enables Source address filtering.
* When enabled source address filtering is performed. Only frames matching SA filtering are passed to application with
* SAMatch bit of RxStatus is set. GMAC drops failed frames.
* @param[in] pointer to synopGMACdevice.
* \return void.
* \note This function is overriden by synopGMAC_frame_filter_disable(synopGMACdevice *)
*/
#if UNUSED
void synopGMAC_src_addr_filter_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacSrcAddrFilter);
return;
}
#endif
/**
* Disables Source address filtering.
* When disabled GMAC forwards the received frames with updated SAMatch bit in RxStatus.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_src_addr_filter_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacSrcAddrFilter);
return;
}
/**
* Enables Inverse Destination address filtering.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_dst_addr_filter_inverse(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacDestAddrFilterInv);
return;
}
#endif
/**
* Enables the normal Destination address filtering.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_dst_addr_filter_normal(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacDestAddrFilterInv);
return;
}
/**
* Enables forwarding of control frames.
* When set forwards all the control frames (incl. unicast and multicast PAUSE frames).
* @param[in] pointer to synopGMACdevice.
* \return void.
* \note Depends on RFE of FlowControlRegister[2]
*/
void synopGMAC_set_pass_control(synopGMACdevice *gmacdev, u32 passcontrol)
{
u32 data;
data = synopGMACReadReg(gmacdev -> MacBase, GmacFrameFilter);
data &= (~GmacPassControl);
data |= passcontrol;
synopGMACWriteReg(gmacdev -> MacBase, GmacFrameFilter, data);
return;
}
/**
* Enables Broadcast frames.
* When enabled Address filtering module passes all incoming broadcast frames.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_broadcast_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacBroadcast);
return;
}
/**
* Disable Broadcast frames.
* When disabled Address filtering module filters all incoming broadcast frames.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_broadcast_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacFrameFilter, GmacBroadcast);
return;
}
#endif
/**
* Enables Multicast frames.
* When enabled all multicast frames are passed.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_multicast_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacMulticastFilter);
return;
}
#endif
/**
* Disable Multicast frames.
* When disabled multicast frame filtering depends on HMC bit.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_multicast_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacMulticastFilter);
return;
}
/**
* Enables multicast hash filtering.
* When enabled GMAC performs teh destination address filtering according to the hash table.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_multicast_hash_filter_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacMcastHashFilter);
return;
}
#endif
/**
* Disables multicast hash filtering.
* When disabled GMAC performs perfect destination address filtering for multicast frames, it compares
* DA field with the value programmed in DA register.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_multicast_hash_filter_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacMcastHashFilter);
return;
}
/**
* Enables promiscous mode.
* When enabled Address filter modules pass all incoming frames regardless of their Destination
* and source addresses.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_promisc_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacPromiscuousMode);
return;
}
#endif
/**
* Clears promiscous mode.
* When called the GMAC falls back to normal operation from promiscous mode.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_promisc_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacPromiscuousMode);
return;
}
/**
* Enables unicast hash filtering.
* When enabled GMAC performs the destination address filtering of unicast frames according to the hash table.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_unicast_hash_filter_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFrameFilter, GmacUcastHashFilter);
return;
}
#endif
/**
* Disables multicast hash filtering.
* When disabled GMAC performs perfect destination address filtering for unicast frames, it compares
* DA field with the value programmed in DA register.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_unicast_hash_filter_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFrameFilter, GmacUcastHashFilter);
return;
}
/*Flow control configuration functions*/
/**
* Enables detection of pause frames with stations unicast address.
* When enabled GMAC detects the pause frames with stations unicast address in addition to the
* detection of pause frames with unique multicast address.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_unicast_pause_frame_detect_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFlowControl, GmacUnicastPauseFrame);
return;
}
#endif
/**
* Disables detection of pause frames with stations unicast address.
* When disabled GMAC only detects with the unique multicast address (802.3x).
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_unicast_pause_frame_detect_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFlowControl, GmacUnicastPauseFrame);
return;
}
/**
* Rx flow control enable.
* When Enabled GMAC will decode the rx pause frame and disable the tx for a specified time.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_rx_flow_control_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFlowControl, GmacRxFlowControl);
return;
}
/**
* Rx flow control disable.
* When disabled GMAC will not decode pause frame.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_rx_flow_control_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFlowControl, GmacRxFlowControl);
return;
}
/**
* Tx flow control enable.
* When Enabled
* - In full duplex GMAC enables flow control operation to transmit pause frames.
* - In Half duplex GMAC enables the back pressure operation
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_tx_flow_control_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFlowControl, GmacTxFlowControl);
return;
}
/**
* Tx flow control disable.
* When Disabled
* - In full duplex GMAC will not transmit any pause frames.
* - In Half duplex GMAC disables the back pressure feature.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_tx_flow_control_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev -> MacBase, GmacFlowControl, GmacTxFlowControl);
return;
}
/**
* Initiate Flowcontrol operation.
* When Set
* - In full duplex GMAC initiates pause control frame.
* - In Half duplex GMAC initiates back pressure function.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_tx_activate_flow_control(synopGMACdevice *gmacdev)
{
//In case of full duplex check for this bit to b'0. if it is read as b'1 indicates that
//control frame transmission is in progress.
if (gmacdev -> Speed == FULLDUPLEX)
{
if (!synopGMACCheckBits(gmacdev -> MacBase, GmacFlowControl, GmacFlowControlBackPressure))
{
synopGMACSetBits(gmacdev -> MacBase, GmacFlowControl, GmacFlowControlBackPressure);
}
}
else//if half duplex mode
{
synopGMACSetBits(gmacdev -> MacBase, GmacFlowControl, GmacFlowControlBackPressure);
}
return;
}
#endif
/**
* stops Flowcontrol operation.
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
#if UNUSED
void synopGMAC_tx_deactivate_flow_control(synopGMACdevice *gmacdev)
{
//In full duplex this bit is automatically cleared after transmitting a pause control frame.
if (gmacdev->Speed == HALFDUPLEX)
{
synopGMACSetBits(gmacdev -> MacBase, GmacFlowControl, GmacFlowControlBackPressure);
}
return;
}
#endif
/**
* This enables the pause frame generation after programming the appropriate registers.
* presently activation is set at 3k and deactivation set at 4k. These may have to tweaked
* if found any issues
* @param[in] pointer to synopGMACdevice.
* \return void.
*/
void synopGMAC_pause_control(synopGMACdevice *gmacdev)
{
u32 omr_reg;
u32 mac_flow_control_reg;
omr_reg = synopGMACReadReg(gmacdev -> DmaBase, DmaControl);
omr_reg |= DmaRxFlowCtrlAct4K | DmaRxFlowCtrlDeact5K | DmaEnHwFlowCtrl;
synopGMACWriteReg(gmacdev -> DmaBase, DmaControl, omr_reg);
mac_flow_control_reg = synopGMACReadReg(gmacdev -> MacBase, GmacFlowControl);
mac_flow_control_reg |= GmacRxFlowControl | GmacTxFlowControl | 0xFFFF0000;
synopGMACWriteReg(gmacdev -> MacBase, GmacFlowControl, mac_flow_control_reg);
return;
}
/**
* Example mac initialization sequence.
* This function calls the initialization routines to initialize the GMAC register.
* One can change the functions invoked here to have different configuration as per the requirement
* @param[in] pointer to synopGMACdevice.
* \return Returns 0 on success.
*/
s32 synopGMAC_mac_init(synopGMACdevice *gmacdev)
{
u32 PHYreg;
if (gmacdev->DuplexMode == FULLDUPLEX)
{
TR("\n===phy FULLDUPLEX MODE\n"); //sw: debug
synopGMAC_wd_enable(gmacdev);
synopGMAC_jab_enable(gmacdev);
synopGMAC_frame_burst_enable(gmacdev);
synopGMAC_jumbo_frame_disable(gmacdev);
synopGMAC_rx_own_enable(gmacdev);
#if SYNOP_LOOPBACK_MODE
synopGMAC_loopback_on(gmacdev);
#else
synopGMAC_loopback_off(gmacdev);
#endif
synopGMAC_set_full_duplex(gmacdev); //1
synopGMAC_retry_enable(gmacdev);
synopGMAC_pad_crc_strip_disable(gmacdev);
synopGMAC_back_off_limit(gmacdev, GmacBackoffLimit0);
synopGMAC_deferral_check_disable(gmacdev);
synopGMAC_tx_enable(gmacdev); //according to Tang Dan's commitment
synopGMAC_rx_enable(gmacdev);
synopGMACSetBits(gmacdev -> DmaBase, DmaControl, DmaStoreAndForward); //3
synopGMACSetBits(gmacdev -> DmaBase, DmaControl, DmaFwdErrorFrames);
if (gmacdev -> Speed == SPEED1000)
{
synopGMAC_select_gmii(gmacdev);
}
else
{
synopGMAC_select_mii(gmacdev);
if (gmacdev -> Speed == SPEED100)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacFESpeed100);
}
else
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacFESpeed10);
}
}
/*Frame Filter Configuration*/
//synopGMAC_frame_filter_enable(gmacdev); //2
synopGMAC_frame_filter_disable(gmacdev); //2
synopGMAC_set_pass_control(gmacdev, GmacPassControl0);
synopGMAC_broadcast_enable(gmacdev);
synopGMAC_src_addr_filter_disable(gmacdev);
synopGMAC_multicast_disable(gmacdev);
synopGMAC_dst_addr_filter_normal(gmacdev); //scl
//synopGMAC_dst_addr_filter_inverse(gmacdev);
synopGMAC_multicast_hash_filter_disable(gmacdev);
synopGMAC_promisc_disable(gmacdev);
synopGMAC_unicast_hash_filter_disable(gmacdev);
/*Flow Control Configuration*/
synopGMAC_unicast_pause_frame_detect_disable(gmacdev);
synopGMAC_rx_flow_control_enable(gmacdev);
synopGMAC_tx_flow_control_enable(gmacdev);
}
else//for Half Duplex configuration
{
TR("\n===phy HALFDUPLEX MODE\n"); //sw: debug
synopGMAC_wd_enable(gmacdev);
synopGMAC_jab_enable(gmacdev);
synopGMAC_frame_burst_enable(gmacdev);
synopGMAC_jumbo_frame_disable(gmacdev);
synopGMAC_rx_own_enable(gmacdev);
#if SYNOP_LOOPBACK_MODE
synopGMAC_loopback_on(gmacdev);
#else
synopGMAC_loopback_off(gmacdev);
#endif
synopGMAC_set_half_duplex(gmacdev);
synopGMAC_retry_enable(gmacdev);
synopGMAC_pad_crc_strip_disable(gmacdev);
synopGMAC_back_off_limit(gmacdev, GmacBackoffLimit0);
synopGMAC_deferral_check_disable(gmacdev);
//sw: set efe & tsf
synopGMACSetBits(gmacdev -> DmaBase, DmaControl, DmaStoreAndForward);
synopGMACSetBits(gmacdev -> DmaBase, DmaControl, DmaFwdErrorFrames);
//sw: put it in the end
synopGMAC_tx_enable(gmacdev);
synopGMAC_rx_enable(gmacdev);
if (gmacdev -> Speed == SPEED1000)
synopGMAC_select_gmii(gmacdev);
else
{
synopGMAC_select_mii(gmacdev);
if (gmacdev -> Speed == SPEED100)
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacFESpeed100);
}
else
{
synopGMACSetBits(gmacdev -> MacBase, GmacConfig, GmacFESpeed10);
}
}
// synopGMACSetBits(gmacdev->MacBase, GmacConfig, GmacDisableCrs);
// synopGMAC_select_gmii(gmacdev);
/*Frame Filter Configuration*/
synopGMAC_frame_filter_enable(gmacdev);
// synopGMAC_frame_filter_disable(gmacdev);
synopGMAC_set_pass_control(gmacdev, GmacPassControl0);
synopGMAC_broadcast_enable(gmacdev);
synopGMAC_src_addr_filter_disable(gmacdev);
synopGMAC_multicast_disable(gmacdev);
synopGMAC_dst_addr_filter_normal(gmacdev);
synopGMAC_multicast_hash_filter_disable(gmacdev);
synopGMAC_promisc_disable(gmacdev);
// synopGMAC_promisc_enable(gmacdev);
synopGMAC_unicast_hash_filter_disable(gmacdev);
//sw: loopback mode
// synopGMAC_loopback_on(gmacdev);
/*Flow Control Configuration*/
synopGMAC_unicast_pause_frame_detect_disable(gmacdev);
synopGMAC_rx_flow_control_disable(gmacdev);
synopGMAC_tx_flow_control_disable(gmacdev);
/*To set PHY register to enable CRS on Transmit*/
}
return 0;
}
/**
* Sets the Mac address in to GMAC register.
* This function sets the MAC address to the MAC register in question.
* @param[in] pointer to synopGMACdevice to populate mac dma and phy addresses.
* @param[in] Register offset for Mac address high
* @param[in] Register offset for Mac address low
* @param[in] buffer containing mac address to be programmed.
* \return 0 upon success. Error code upon failure.
*/
s32 synopGMAC_set_mac_addr(synopGMACdevice *gmacdev, u32 MacHigh, u32 MacLow, u8 *MacAddr)
{
u32 data;
data = (MacAddr[5] << 8) | MacAddr[4];
synopGMACWriteReg(gmacdev -> MacBase, MacHigh, data);
data = (MacAddr[3] << 24) | (MacAddr[2] << 16) | (MacAddr[1] << 8) | MacAddr[0];
synopGMACWriteReg(gmacdev -> MacBase, MacLow, data);
return 0;
}
/**
* Get the Mac address in to the address specified.
* The mac register contents are read and written to buffer passed.
* @param[in] pointer to synopGMACdevice to populate mac dma and phy addresses.
* @param[in] Register offset for Mac address high
* @param[in] Register offset for Mac address low
* @param[out] buffer containing the device mac address.
* \return 0 upon success. Error code upon failure.
*/
s32 synopGMAC_get_mac_addr(synopGMACdevice *gmacdev, u32 MacHigh, u32 MacLow, u8 *MacAddr)
{
u32 data;
data = synopGMACReadReg(gmacdev -> MacBase, MacHigh);
MacAddr[5] = (data >> 8) & 0xff;
MacAddr[4] = (data) & 0xff;
data = synopGMACReadReg(gmacdev -> MacBase, MacLow);
MacAddr[3] = (data >> 24) & 0xff;
MacAddr[2] = (data >> 16) & 0xff;
MacAddr[1] = (data >> 8) & 0xff;
MacAddr[0] = (data) & 0xff;
// rt_kprintf("MacAddr = 0x%x\t0x%x\t0x%x\t0x%x\t0x%x\t0x%x\n",MacAddr[0],MacAddr[1],MacAddr[2],MacAddr[3],MacAddr[4],MacAddr[5]);
return 0;
}
/**
* Attaches the synopGMAC device structure to the hardware.
* Device structure is populated with MAC/DMA and PHY base addresses.
* @param[in] pointer to synopGMACdevice to populate mac dma and phy addresses.
* @param[in] GMAC IP mac base address.
* @param[in] GMAC IP dma base address.
* @param[in] GMAC IP phy base address.
* \return 0 upon success. Error code upon failure.
* \note This is important function. No kernel api provided by Synopsys
*/
s32 synopGMAC_attach(synopGMACdevice *gmacdev, u64 macBase, u64 dmaBase, u64 phyBase, u8 *mac_addr)
{
/*Make sure the Device data strucure is cleared before we proceed further*/
rt_memset((void *)gmacdev, 0, sizeof(synopGMACdevice));
/*Populate the mac and dma base addresses*/
gmacdev -> MacBase = macBase;
gmacdev -> DmaBase = dmaBase;
gmacdev -> PhyBase = phyBase;
// rt_kprintf("gmacdev->DmaBase = 0x%x\n", gmacdev->DmaBase);
// rt_kprintf("dmaBase = 0x%x\n", dmaBase);
{
int i, j;
u16 data;
for (i = phyBase, j = 0; j < 32; i = (i + 1) & 0x1f, j++)
{
synopGMAC_read_phy_reg(gmacdev -> MacBase, i, 2, &data);
if (data != 0 && data != 0xffff)
{
break;
}
synopGMAC_read_phy_reg(gmacdev -> MacBase, i, 3, &data);
if (data != 0 && data != 0xffff)
{
break;
}
}
if (j == 32)
{
rt_kprintf("phy_detect: can't find PHY!\n");
}
gmacdev -> PhyBase = i;
}
// synopGMAC_get_mac_addr(gmacdev, GmacAddr0High, GmacAddr0Low, mac_addr);
/* Program/flash in the station/IP's Mac address */
synopGMAC_set_mac_addr(gmacdev, GmacAddr0High, GmacAddr0Low, mac_addr);
return 0;
}
/**
* Initialize the rx descriptors for ring or chain mode operation.
* - Status field is initialized to 0.
* - EndOfRing set for the last descriptor.
* - buffer1 and buffer2 set to 0 for ring mode of operation. (note)
* - data1 and data2 set to 0. (note)
* @param[in] pointer to DmaDesc structure.
* @param[in] whether end of ring
* \return void.
* \note Initialization of the buffer1, buffer2, data1,data2 and status are not done here. This only initializes whether one wants to use this descriptor
* in chain mode or ring mode. For chain mode of operation the buffer2 and data2 are programmed before calling this function.
*/
void synopGMAC_rx_desc_init_ring(DmaDesc *desc, bool last_ring_desc)
{
desc -> length = last_ring_desc ? RxDescEndOfRing : 0;
desc -> status = 0;
desc -> buffer1 = 0;
desc -> buffer2 = 0;
desc -> data1 = 0;
desc -> data2 = 0;
//desc -> dummy1 = 0;
//desc -> dummy2 = 0;
return;
}
void synopGMAC_rx_desc_recycle(DmaDesc *desc, bool last_ring_desc)
{
desc -> status = DescOwnByDma;
desc -> length = last_ring_desc ? RxDescEndOfRing : 0;
//desc->buffer1 = 0;
//desc->buffer2 = 0;
//desc->data1 = 0;
//desc->data2 = 0;
//desc -> dummy1 = 0;
//desc -> dummy2 = 0;
return;
}
/**
* Initialize the tx descriptors for ring or chain mode operation.
* - Status field is initialized to 0.
* - EndOfRing set for the last descriptor.
* - buffer1 and buffer2 set to 0 for ring mode of operation. (note)
* - data1 and data2 set to 0. (note)
* @param[in] pointer to DmaDesc structure.
* @param[in] whether end of ring
* \return void.
* \note Initialization of the buffer1, buffer2, data1,data2 and status are not done here. This only initializes whether one wants to use this descriptor
* in chain mode or ring mode. For chain mode of operation the buffer2 and data2 are programmed before calling this function.
*/
void synopGMAC_tx_desc_init_ring(DmaDesc *desc, bool last_ring_desc)
{
#ifdef ENH_DESC
desc -> status = last_ring_desc ? TxDescEndOfRing : 0;
desc -> length = 0;
#else
desc -> length = last_ring_desc ? TxDescEndOfRing : 0;
desc -> status = 0;
#endif
//sw
desc -> buffer1 = 0;
desc -> buffer2 = 0;
desc -> data1 = 0;
desc -> data2 = 0;
//desc -> dummy1 = 0;
//desc -> dummy2 = 0;
return;
}
/**
* Initialize the rx descriptors for chain mode of operation.
* - Status field is initialized to 0.
* - EndOfRing set for the last descriptor.
* - buffer1 and buffer2 set to 0.
* - data1 and data2 set to 0.
* @param[in] pointer to DmaDesc structure.
* @param[in] whether end of ring
* \return void.
*/
void synopGMAC_rx_desc_init_chain(DmaDesc *desc)
{
desc -> status = 0;
desc -> length = RxDescChain;
desc -> buffer1 = 0;
desc -> data1 = 0;
return;
}
/**
* Initialize the rx descriptors for chain mode of operation.
* - Status field is initialized to 0.
* - EndOfRing set for the last descriptor.
* - buffer1 and buffer2 set to 0.
* - data1 and data2 set to 0.
* @param[in] pointer to DmaDesc structure.
* @param[in] whether end of ring
* \return void.
*/
void synopGMAC_tx_desc_init_chain(DmaDesc *desc)
{
#ifdef ENH_DESC
desc -> status = TxDescChain;
desc -> length = 0;
#else
desc -> length = TxDescChain;
#endif
desc -> buffer1 = 0;
desc -> data1 = 0;
return;
}
s32 synopGMAC_init_tx_rx_desc_queue(synopGMACdevice *gmacdev)
{
s32 i;
for (i = 0; i < gmacdev -> TxDescCount; i++)
{
synopGMAC_tx_desc_init_ring(gmacdev -> TxDesc + i, i == gmacdev -> TxDescCount - 1);
}
TR("At line %d\n", __LINE__);
for (i = 0; i < gmacdev -> RxDescCount; i++)
{
synopGMAC_rx_desc_init_ring(gmacdev -> RxDesc + i, i == gmacdev -> RxDescCount - 1);
}
gmacdev -> TxNext = 0;
gmacdev -> TxBusy = 0;
gmacdev -> RxNext = 0;
gmacdev -> RxBusy = 0;
return -ESYNOPGMACNOERR;
}
/**
* Programs the DmaRxBaseAddress with the Rx descriptor base address.
* Rx Descriptor's base address is available in the gmacdev structure. This function progrms the
* Dma Rx Base address with the starting address of the descriptor ring or chain.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_init_rx_desc_base(synopGMACdevice *gmacdev)
{
DEBUG_MES("gmacdev->RxDescDma = %08x\n", gmacdev -> RxDescDma);
synopGMACWriteReg(gmacdev -> DmaBase, DmaRxBaseAddr, (u32)gmacdev -> RxDescDma);
return;
}
/**
* Programs the DmaTxBaseAddress with the Tx descriptor base address.
* Tx Descriptor's base address is available in the gmacdev structure. This function progrms the
* Dma Tx Base address with the starting address of the descriptor ring or chain.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_init_tx_desc_base(synopGMACdevice *gmacdev)
{
synopGMACWriteReg(gmacdev -> DmaBase, DmaTxBaseAddr, (u32)gmacdev -> TxDescDma);
return;
}
/**
* Makes the Dma as owner for this descriptor.
* This function sets the own bit of status field of the DMA descriptor,
* indicating the DMA is the owner for this descriptor.
* @param[in] pointer to DmaDesc structure.
* \return returns void.
*/
void synopGMAC_set_owner_dma(DmaDesc *desc)
{
desc -> status |= DescOwnByDma;
}
/**
* set tx descriptor to indicate SOF.
* This Descriptor contains the start of ethernet frame.
* @param[in] pointer to DmaDesc structure.
* \return returns void.
*/
void synopGMAC_set_desc_sof(DmaDesc *desc)
{
#ifdef ENH_DESC
desc -> status |= DescTxFirst;//ENH_DESC
#else
desc -> length |= DescTxFirst;
#endif
}
/**
* set tx descriptor to indicate EOF.
* This descriptor contains the End of ethernet frame.
* @param[in] pointer to DmaDesc structure.
* \return returns void.
*/
void synopGMAC_set_desc_eof(DmaDesc *desc)
{
#ifdef ENH_DESC
desc -> status |= DescTxLast;//ENH_DESC
#else
desc -> length |= DescTxLast;
#endif
}
/**
* checks whether this descriptor contains start of frame.
* This function is to check whether the descriptor's data buffer
* contains a fresh ethernet frame?
* @param[in] pointer to DmaDesc structure.
* \return returns true if SOF in current descriptor, else returns fail.
*/
bool synopGMAC_is_sof_in_rx_desc(DmaDesc *desc)
{
return ((desc -> status & DescRxFirst) == DescRxFirst);
}
/**
* checks whether this descriptor contains end of frame.
* This function is to check whether the descriptor's data buffer
* contains end of ethernet frame?
* @param[in] pointer to DmaDesc structure.
* \return returns true if SOF in current descriptor, else returns fail.
*/
bool synopGMAC_is_eof_in_rx_desc(DmaDesc *desc)
{
return ((desc -> status & DescRxLast) == DescRxLast);
}
/**
* checks whether destination address filter failed in the rx frame.
* @param[in] pointer to DmaDesc structure.
* \return returns true if Failed, false if not.
*/
bool synopGMAC_is_da_filter_failed(DmaDesc *desc)
{
return ((desc -> status & DescDAFilterFail) == DescDAFilterFail);
}
/**
* checks whether source address filter failed in the rx frame.
* @param[in] pointer to DmaDesc structure.
* \return returns true if Failed, false if not.
*/
bool synopGMAC_is_sa_filter_failed(DmaDesc *desc)
{
return ((desc -> status & DescSAFilterFail) == DescSAFilterFail);
}
/**
* Checks whether the descriptor is owned by DMA.
* If descriptor is owned by DMA then the OWN bit is set to 1. This API is same for both ring and chain mode.
* @param[in] pointer to DmaDesc structure.
* \return returns true if Dma owns descriptor and false if not.
*/
bool synopGMAC_is_desc_owned_by_dma(DmaDesc *desc)
{
return ((desc -> status & DescOwnByDma) == DescOwnByDma);
}
/**
* returns the byte length of received frame including CRC.
* This returns the no of bytes received in the received ethernet frame including CRC(FCS).
* @param[in] pointer to DmaDesc structure.
* \return returns the length of received frame lengths in bytes.
*/
u32 synopGMAC_get_rx_desc_frame_length(u32 status)
{
return ((status & DescFrameLengthMask) >> DescFrameLengthShift);
}
/**
* Checks whether the descriptor is valid
* if no errors such as CRC/Receive Error/Watchdog Timeout/Late collision/Giant Frame/Overflow/Descriptor
* error the descritpor is said to be a valid descriptor.
* @param[in] pointer to DmaDesc structure.
* \return True if desc valid. false if error.
*/
bool synopGMAC_is_desc_valid(u32 status)
{
return ((status & DescError) == 0);
}
/**
* Checks whether the descriptor is empty.
* If the buffer1 and buffer2 lengths are zero in ring mode descriptor is empty.
* In chain mode buffer2 length is 0 but buffer2 itself contains the next descriptor address.
* @param[in] pointer to DmaDesc structure.
* \return returns true if descriptor is empty, false if not empty.
*/
bool synopGMAC_is_desc_empty(DmaDesc *desc)
{
//if both the buffer1 length and buffer2 length are zero desc is empty
return (((desc -> length & DescSize1Mask) == 0) && ((desc -> length & DescSize2Mask) == 0));
}
/**
* Checks whether the rx descriptor is valid.
* if rx descripor is not in error and complete frame is available in the same descriptor
* @param[in] pointer to DmaDesc structure.
* \return returns true if no error and first and last desc bits are set, otherwise it returns false.
*/
bool synopGMAC_is_rx_desc_valid(u32 status)
{
return ((status & DescError) == 0) && ((status & DescRxFirst) == DescRxFirst) && ((status & DescRxLast) == DescRxLast);
}
/**
* Checks whether the tx is aborted due to collisions.
* @param[in] pointer to DmaDesc structure.
* \return returns true if collisions, else returns false.
*/
bool synopGMAC_is_tx_aborted(u32 status)
{
return (((status & DescTxLateCollision) == DescTxLateCollision) | ((status & DescTxExcCollisions) == DescTxExcCollisions));
}
/**
* Checks whether the tx carrier error.
* @param[in] pointer to DmaDesc structure.
* \return returns true if carrier error occured, else returns falser.
*/
bool synopGMAC_is_tx_carrier_error(u32 status)
{
return (((status & DescTxLostCarrier) == DescTxLostCarrier) | ((status & DescTxNoCarrier) == DescTxNoCarrier));
}
/**
* Gives the transmission collision count.
* returns the transmission collision count indicating number of collisions occured before the frame was transmitted.
* Make sure to check excessive collision didnot happen to ensure the count is valid.
* @param[in] pointer to DmaDesc structure.
* \return returns the count value of collision.
*/
u32 synopGMAC_get_tx_collision_count(u32 status)
{
return ((status & DescTxCollMask) >> DescTxCollShift);
}
u32 synopGMAC_is_exc_tx_collisions(u32 status)
{
return ((status & DescTxExcCollisions) == DescTxExcCollisions);
}
/**
* Check for damaged frame due to overflow or collision.
* Retruns true if rx frame was damaged due to buffer overflow in MTL or late collision in half duplex mode.
* @param[in] pointer to DmaDesc structure.
* \return returns true if error else returns false.
*/
bool synopGMAC_is_rx_frame_damaged(u32 status)
{
//bool synopGMAC_dma_rx_collisions(u32 status)
return (((status & DescRxDamaged) == DescRxDamaged) | ((status & DescRxCollision) == DescRxCollision));
}
/**
* Check for damaged frame due to collision.
* Retruns true if rx frame was damaged due to late collision in half duplex mode.
* @param[in] pointer to DmaDesc structure.
* \return returns true if error else returns false.
*/
bool synopGMAC_is_rx_frame_collision(u32 status)
{
//bool synopGMAC_dma_rx_collisions(u32 status)
return ((status & DescRxCollision) == DescRxCollision);
}
/**
* Check for receive CRC error.
* Retruns true if rx frame CRC error occured.
* @param[in] pointer to DmaDesc structure.
* \return returns true if error else returns false.
*/
bool synopGMAC_is_rx_crc(u32 status)
{
//u32 synopGMAC_dma_rx_crc(u32 status)
return ((status & DescRxCrc) == DescRxCrc);
}
/**
* Indicates rx frame has non integer multiple of bytes. (odd nibbles).
* Retruns true if dribbling error in rx frame.
* @param[in] pointer to DmaDesc structure.
* \return returns true if error else returns false.
*/
bool synopGMAC_is_frame_dribbling_errors(u32 status)
{
//u32 synopGMAC_dma_rx_frame_errors(u32 status)
return ((status & DescRxDribbling) == DescRxDribbling);
}
/**
* Indicates error in rx frame length.
* Retruns true if received frame length doesnot match with the length field
* @param[in] pointer to DmaDesc structure.
* \return returns true if error else returns false.
*/
bool synopGMAC_is_rx_frame_length_errors(u32 status)
{
//u32 synopGMAC_dma_rx_length_errors(u32 status)
return ((status & DescRxLengthError) == DescRxLengthError);
}
/**
* Checks whether this rx descriptor is last rx descriptor.
* This returns true if it is last descriptor either in ring mode or in chain mode.
* @param[in] pointer to devic structure.
* @param[in] pointer to DmaDesc structure.
* \return returns true if it is last descriptor, false if not.
* \note This function should not be called before initializing the descriptor using synopGMAC_desc_init().
*/
bool synopGMAC_is_last_rx_desc(synopGMACdevice *gmacdev, DmaDesc *desc)
{
//bool synopGMAC_is_last_desc(DmaDesc *desc)
return (((desc -> length & RxDescEndOfRing) == RxDescEndOfRing) || ((u64)gmacdev -> RxDesc == desc -> data2));
}
/**
* Checks whether this tx descriptor is last tx descriptor.
* This returns true if it is last descriptor either in ring mode or in chain mode.
* @param[in] pointer to devic structure.
* @param[in] pointer to DmaDesc structure.
* \return returns true if it is last descriptor, false if not.
* \note This function should not be called before initializing the descriptor using synopGMAC_desc_init().
*/
bool synopGMAC_is_last_tx_desc(synopGMACdevice *gmacdev, DmaDesc *desc)
{
//bool synopGMAC_is_last_desc(DmaDesc *desc)
#ifdef ENH_DESC
return (((desc->status & TxDescEndOfRing) == TxDescEndOfRing) || ((u64)gmacdev -> TxDesc == desc -> data2));
#else
return (((desc->length & TxDescEndOfRing) == TxDescEndOfRing) || ((u64)gmacdev -> TxDesc == desc -> data2));
#endif
}
/**
* Checks whether this rx descriptor is in chain mode.
* This returns true if it is this descriptor is in chain mode.
* @param[in] pointer to DmaDesc structure.
* \return returns true if chain mode is set, false if not.
*/
bool synopGMAC_is_rx_desc_chained(DmaDesc *desc)
{
return ((desc -> length & RxDescChain) == RxDescChain);
}
/**
* Checks whether this tx descriptor is in chain mode.
* This returns true if it is this descriptor is in chain mode.
* @param[in] pointer to DmaDesc structure.
* \return returns true if chain mode is set, false if not.
*/
bool synopGMAC_is_tx_desc_chained(DmaDesc *desc)
{
#ifdef ENH_DESC
return ((desc -> status & TxDescChain) == TxDescChain);
#else
return ((desc -> length & TxDescChain) == TxDescChain);
#endif
}
/**
* Driver Api to get the descriptor field information.
* This returns the status, dma-able address of buffer1, the length of buffer1, virtual address of buffer1
* dma-able address of buffer2, length of buffer2, virtural adddress of buffer2.
* @param[in] pointer to DmaDesc structure.
* @param[out] pointer to status field fo descriptor.
* @param[out] dma-able address of buffer1.
* @param[out] length of buffer1.
* @param[out] virtual address of buffer1.
* @param[out] dma-able address of buffer2.
* @param[out] length of buffer2.
* @param[out] virtual address of buffer2.
* \return returns void.
*/
void synopGMAC_get_desc_data(DmaDesc *desc, u32 *Status, u32 *Buffer1, u32 *Length1, u64 *Data1, u32 *Buffer2, u32 *Length2, u64 *Data2)
{
if (Status != 0)
{
*Status = desc -> status;
}
if (Buffer1 != 0)
{
*Buffer1 = desc -> buffer1;
}
if (Length1 != 0)
{
*Length1 = (desc -> length & DescSize1Mask) >> DescSize1Shift;
}
if (Data1 != 0)
{
*Data1 = desc -> data1;
}
if (Buffer2 != 0)
{
*Buffer2 = desc -> buffer2;
}
if (Length2 != 0)
{
*Length2 = (desc -> length & DescSize2Mask) >> DescSize2Shift;
}
if (Data2 != 0)
{
*Data2 = desc -> data2;
}
return;
}
#ifdef ENH_DESC_8W
/**
* This function is defined two times. Once when the code is compiled for ENHANCED DESCRIPTOR SUPPORT and Once for Normal descriptor
* Get the index and address of Tx desc.
* This api is same for both ring mode and chain mode.
* This function tracks the tx descriptor the DMA just closed after the transmission of data from this descriptor is
* over. This returns the descriptor fields to the caller.
* @param[in] pointer to synopGMACdevice.
* @param[out] status field of the descriptor.
* @param[out] Dma-able buffer1 pointer.
* @param[out] length of buffer1 (Max is 2048).
* @param[out] virtual pointer for buffer1.
* @param[out] Dma-able buffer2 pointer.
* @param[out] length of buffer2 (Max is 2048).
* @param[out] virtual pointer for buffer2.
* @param[out] u32 data indicating whether the descriptor is in ring mode or chain mode.
* \return returns present tx descriptor index on success. Negative value if error.
*/
s32 synopGMAC_get_tx_qptr(synopGMACdevice *gmacdev, u32 *Status, u32 *Buffer1, u32 *Length1, u64 *Data1, u32 *Buffer2, u32 *Length2, u64 *Data2,
u32 *Ext_Status, u32 *Time_Stamp_High, u32 *Time_Stamp_Low)
{
u32 txover = gmacdev->TxBusy;
DmaDesc *txdesc = gmacdev->TxBusyDesc;
if (synopGMAC_is_desc_owned_by_dma(txdesc))
return -1;
if (synopGMAC_is_desc_empty(txdesc))
return -1;
(gmacdev->BusyTxDesc)--; //busy tx descriptor is reduced by one as it will be handed over to Processor now
if (Status != 0)
*Status = txdesc->status;
if (Ext_Status != 0)
*Ext_Status = txdesc->extstatus;
if (Time_Stamp_High != 0)
*Time_Stamp_High = txdesc->timestamphigh;
if (Time_Stamp_Low != 0)
*Time_Stamp_High = txdesc->timestamplow;
if (Buffer1 != 0)
*Buffer1 = txdesc->buffer1;
if (Length1 != 0)
*Length1 = (txdesc->length & DescSize1Mask) >> DescSize1Shift;
if (Data1 != 0)
*Data1 = txdesc->data1;
if (Buffer2 != 0)
*Buffer2 = txdesc->buffer2;
if (Length2 != 0)
*Length2 = (txdesc->length & DescSize2Mask) >> DescSize2Shift;
if (Data1 != 0)
*Data2 = txdesc->data2;
gmacdev->TxBusy = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? 0 : txover + 1;
if (synopGMAC_is_tx_desc_chained(txdesc))
{
gmacdev->TxBusyDesc = (DmaDesc *)txdesc->data2;
synopGMAC_tx_desc_init_chain(txdesc);
}
else
{
gmacdev->TxBusyDesc = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? gmacdev->TxDesc : (txdesc + 1);
synopGMAC_tx_desc_init_ring(txdesc, synopGMAC_is_last_tx_desc(gmacdev, txdesc));
}
TR("%02d %08x %08x %08x %08x %08x %08x %08x\n", txover, (u32)txdesc, txdesc->status, txdesc->length, txdesc->buffer1, txdesc->buffer2, txdesc->data1, txdesc->data2);
return txover;
}
#else
/**
* Get the index and address of Tx desc.
* This api is same for both ring mode and chain mode.
* This function tracks the tx descriptor the DMA just closed after the transmission of data from this descriptor is
* over. This returns the descriptor fields to the caller.
* @param[in] pointer to synopGMACdevice.
* @param[out] status field of the descriptor.
* @param[out] Dma-able buffer1 pointer.
* @param[out] length of buffer1 (Max is 2048).
* @param[out] virtual pointer for buffer1.
* @param[out] Dma-able buffer2 pointer.
* @param[out] length of buffer2 (Max is 2048).
* @param[out] virtual pointer for buffer2.
* @param[out] u32 data indicating whether the descriptor is in ring mode or chain mode.
* \return returns present tx descriptor index on success. Negative value if error.
*/
s32 synopGMAC_get_tx_qptr(synopGMACdevice *gmacdev, u32 *Status, u32 *Buffer1, u32 *Length1, u64 *Data1, u32 *Buffer2, u32 *Length2, u64 *Data2)
{
u32 txover = gmacdev->TxBusy;
DmaDesc *txdesc = gmacdev->TxBusyDesc;
int i;
//sw: dbg
//pci_sync_cache(0, (vm_offset_t)txdesc, 64, SYNC_R);
//pci_sync_cache(0, (vm_offset_t)txdesc, 64, SYNC_W);
#if SYNOP_TX_DEBUG
printf("Cache sync before get a used tx dma desc!\n");
printf("\n==%02d %08x %08x %08x %08x %08x %08x %08x\n", txover, (u32)txdesc, txdesc->status, txdesc->length, txdesc->buffer1, txdesc->buffer2, txdesc->data1, txdesc->data2);
#endif
if (synopGMAC_is_desc_owned_by_dma(txdesc))
{
return -1;
}
// gmacdev->TxBusy = synopGMAC_is_last_tx_desc(gmacdev,txdesc) ? 0 : txover + 1;
// gmacdev->TxBusyDesc = synopGMAC_is_last_tx_desc(gmacdev,txdesc) ? gmacdev->TxDesc : (txdesc + 1);
if (synopGMAC_is_desc_empty(txdesc))
{
return -1;
}
(gmacdev->BusyTxDesc)--; //busy tx descriptor is reduced by one as it will be handed over to Processor now
if (Status != 0)
*Status = txdesc->status;
if (Buffer1 != 0)
*Buffer1 = txdesc->buffer1;
if (Length1 != 0)
*Length1 = (txdesc->length & DescSize1Mask) >> DescSize1Shift;
if (Data1 != 0)
*Data1 = txdesc->data1;
if (Buffer2 != 0)
*Buffer2 = txdesc->buffer2;
if (Length2 != 0)
*Length2 = (txdesc->length & DescSize2Mask) >> DescSize2Shift;
if (Data1 != 0)
*Data2 = txdesc->data2;
gmacdev->TxBusy = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? 0 : txover + 1;
if (synopGMAC_is_tx_desc_chained(txdesc))
{
gmacdev->TxBusyDesc = (DmaDesc *)txdesc->data2;
synopGMAC_tx_desc_init_chain(txdesc);
}
else
{
gmacdev->TxBusyDesc = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? gmacdev->TxDesc : (txdesc + 1);
synopGMAC_tx_desc_init_ring(txdesc, synopGMAC_is_last_tx_desc(gmacdev, txdesc));
}
//printf("%02d %08x %08x %08x %08x %08x %08x %08x\n",txover,(u32)txdesc,txdesc->status,txdesc->length,txdesc->buffer1,txdesc->buffer2,txdesc->data1,txdesc->data2);
//pci_sync_cache(0, (vm_offset_t)txdesc, 64, SYNC_W);
#if SYNOP_TX_DEBUG
printf("Cache sync after re-init a tx dma desc!\n");
#endif
return txover;
}
#endif
/**
* Populate the tx desc structure with the buffer address.
* Once the driver has a packet ready to be transmitted, this function is called with the
* valid dma-able buffer addresses and their lengths. This function populates the descriptor
* and make the DMA the owner for the descriptor. This function also controls whether Checksum
* offloading to be done in hardware or not.
* This api is same for both ring mode and chain mode.
* @param[in] pointer to synopGMACdevice.
* @param[in] Dma-able buffer1 pointer.
* @param[in] length of buffer1 (Max is 2048).
* @param[in] virtual pointer for buffer1.
* @param[in] Dma-able buffer2 pointer.
* @param[in] length of buffer2 (Max is 2048).
* @param[in] virtual pointer for buffer2.
* @param[in] u32 data indicating whether the descriptor is in ring mode or chain mode.
* @param[in] u32 indicating whether the checksum offloading in HW/SW.
* \return returns present tx descriptor index on success. Negative value if error.
*/
u32 len;
s32 synopGMAC_set_tx_qptr(synopGMACdevice *gmacdev, u32 Buffer1, u32 Length1, u64 Data1, u32 Buffer2, u32 Length2, u64 Data2, u32 offload_needed, u32 *index, DmaDesc *Dpr)
{
u32 txnext = gmacdev->TxNext;
DmaDesc *txdesc = gmacdev->TxNextDesc;
*index = txnext;
Dpr = txdesc;
if (!synopGMAC_is_desc_empty(txdesc))
{
TR("set tx qptr: desc empty!\n");
return -1;
}
(gmacdev->BusyTxDesc)++; //busy tx descriptor is reduced by one as it will be handed over to Processor now
if (synopGMAC_is_tx_desc_chained(txdesc))
{
txdesc->length |= ((Length1 << DescSize1Shift) & DescSize1Mask);
#ifdef ENH_DESC
txdesc->status |= (DescTxFirst | DescTxLast | DescTxIntEnable); //ENH_DESC
#else
txdesc->length |= (DescTxFirst | DescTxLast | DescTxIntEnable); //Its always assumed that complete data will fit in to one descriptor
#endif
txdesc->buffer1 = Buffer1;
txdesc->data1 = Data1;
if (offload_needed)
{
/*
Make sure that the OS you are running supports the IP and TCP checkusm offloaidng,
before calling any of the functions given below.
*/
synopGMAC_tx_checksum_offload_ipv4hdr(gmacdev, txdesc);
synopGMAC_tx_checksum_offload_tcponly(gmacdev, txdesc);
// synopGMAC_tx_checksum_offload_tcp_pseudo(gmacdev, txdesc);
}
#ifdef ENH_DESC
txdesc->status |= DescOwnByDma;//ENH_DESC
#else
txdesc->status = DescOwnByDma;
#endif
gmacdev->TxNext = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? 0 : txnext + 1;
gmacdev->TxNextDesc = (DmaDesc *)txdesc->data2;
}
else
{
// printf("synopGMAC_set_tx_qptr:in ring mode\n");
txdesc->length |= (((Length1 << DescSize1Shift) & DescSize1Mask) | ((Length2 << DescSize2Shift) & DescSize2Mask));
#ifdef ENH_DESC
txdesc->status |= (DescTxFirst | DescTxLast | DescTxIntEnable); //ENH_DESC
#else
txdesc->length |= (DescTxFirst | DescTxLast | DescTxIntEnable); //Its always assumed that complete data will fit in to one descriptor
#endif
txdesc->buffer1 = Buffer1;
txdesc->data1 = Data1;
txdesc->buffer2 = Buffer2;
txdesc->data2 = Data2;
if (offload_needed)
{
/*
Make sure that the OS you are running supports the IP and TCP checkusm offloaidng,
before calling any of the functions given below.
*/
//sw: i am not sure about the checksum.so i omit it in the outside
synopGMAC_tx_checksum_offload_ipv4hdr(gmacdev, txdesc);
synopGMAC_tx_checksum_offload_tcponly(gmacdev, txdesc);
// synopGMAC_tx_checksum_offload_tcp_pseudo(gmacdev, txdesc);
}
#ifdef ENH_DESC
txdesc->status |= DescOwnByDma;//ENH_DESC
#else
// printf("synopGMAC_set_tx_qptr:give the tx descroptor to dma\n");
txdesc->status = DescOwnByDma;
#endif
gmacdev->TxNext = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? 0 : txnext + 1;
gmacdev->TxNextDesc = synopGMAC_is_last_tx_desc(gmacdev, txdesc) ? gmacdev->TxDesc : (txdesc + 1);
}
#if SYNOP_TX_DEBUG
printf("%02d %08x %08x %08x %08x %08x %08x %08x\n", txnext, (u32)txdesc, txdesc->status, txdesc->length, txdesc->buffer1, txdesc->buffer2, txdesc->data1, txdesc->data2);
#endif
//pci_sync_cache(0, (vm_offset_t)txdesc, 64, SYNC_W);
#if SYNOP_TX_DEBUG
printf("Cache sync to set a tx desc!\n");
#endif
//pci_sync_cache(0, (vm_offset_t)(txdesc->data1), 32, SYNC_W);
#if SYNOP_TX_DEBUG
//printf("Cache sync for data in the buf of the tx desc!\n");
#endif
return txnext;
}
#ifdef ENH_DESC_8W
/**
* Prepares the descriptor to receive packets.
* The descriptor is allocated with the valid buffer addresses (sk_buff address) and the length fields
* and handed over to DMA by setting the ownership. After successful return from this function the
* descriptor is added to the receive descriptor pool/queue.
* This api is same for both ring mode and chain mode.
* @param[in] pointer to synopGMACdevice.
* @param[in] Dma-able buffer1 pointer.
* @param[in] length of buffer1 (Max is 2048).
* @param[in] Dma-able buffer2 pointer.
* @param[in] length of buffer2 (Max is 2048).
* @param[in] u32 data indicating whether the descriptor is in ring mode or chain mode.
* \return returns present rx descriptor index on success. Negative value if error.
*/
// dma_addr RX_BUF_SIZE skb
s32 synopGMAC_set_rx_qptr(synopGMACdevice *gmacdev, u32 Buffer1, u32 Length1, u64 Data1, u32 Buffer2, u32 Length2, u64 Data2)
{
u32 rxnext = gmacdev->RxNext;
DmaDesc *rxdesc = gmacdev->RxNextDesc;
if (!synopGMAC_is_desc_empty(rxdesc))
return -1;
if (synopGMAC_is_rx_desc_chained(rxdesc))
{
rxdesc->length |= ((Length1 << DescSize1Shift) & DescSize1Mask);
rxdesc->buffer1 = Buffer1;
rxdesc->data1 = Data1;
rxdesc->extstatus = 0;
rxdesc->reserved1 = 0;
rxdesc->timestamplow = 0;
rxdesc->timestamphigh = 0;
if ((rxnext % MODULO_INTERRUPT) != 0)
rxdesc->length |= RxDisIntCompl;
rxdesc->status = DescOwnByDma;
gmacdev->RxNext = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
gmacdev->RxNextDesc = (DmaDesc *)rxdesc->data2;
}
else
{
rxdesc->length |= (((Length1 << DescSize1Shift) & DescSize1Mask) | ((Length2 << DescSize2Shift) & DescSize2Mask));
rxdesc->buffer1 = Buffer1;
rxdesc->data1 = Data1;
rxdesc->extstatus = 0;
rxdesc->reserved1 = 0;
rxdesc->timestamplow = 0;
rxdesc->timestamphigh = 0;
rxdesc->buffer2 = Buffer2;
rxdesc->data2 = Data2;
if ((rxnext % MODULO_INTERRUPT) != 0)
rxdesc->length |= RxDisIntCompl;
rxdesc->status = DescOwnByDma;
gmacdev->RxNext = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
gmacdev->RxNextDesc = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? gmacdev->RxDesc : (rxdesc + 1);
}
#if SYNOP_RX_DEBUG
TR("%02d %08x %08x %08x %08x %08x %08x %08x %08x %08x\n", rxnext, (u32)rxdesc, rxdesc->status, rxdesc->length, rxdesc->buffer1, rxdesc->buffer2, rxdesc->data1, rxdesc->data2, rxdesc->dummy1, rxdesc->dummy2);
#endif
(gmacdev->BusyRxDesc)++; //One descriptor will be given to Hardware. So busy count incremented by one
//pci_sync_cache(0, (vm_offset_t)rxdesc,64, SYNC_W);
return rxnext;
}
#else
/**
* Prepares the descriptor to receive packets.
* The descriptor is allocated with the valid buffer addresses (sk_buff address) and the length fields
* and handed over to DMA by setting the ownership. After successful return from this function the
* descriptor is added to the receive descriptor pool/queue.
* This api is same for both ring mode and chain mode.
* @param[in] pointer to synopGMACdevice.
* @param[in] Dma-able buffer1 pointer.
* @param[in] length of buffer1 (Max is 2048).
* @param[in] Dma-able buffer2 pointer.
* @param[in] length of buffer2 (Max is 2048).
* @param[in] u32 data indicating whether the descriptor is in ring mode or chain mode.
* \return returns present rx descriptor index on success. Negative value if error.
*/
s32 synopGMAC_set_rx_qptr(synopGMACdevice *gmacdev, u32 Buffer1, u32 Length1, u64 Data1, u32 Buffer2, u32 Length2, u64 Data2)
{
u32 rxnext = gmacdev->RxNext;
DmaDesc *rxdesc = gmacdev->RxNextDesc;
if (!synopGMAC_is_desc_empty(rxdesc))
return -1;
if (synopGMAC_is_rx_desc_chained(rxdesc))
{
rxdesc->length |= ((Length1 << DescSize1Shift) & DescSize1Mask);
rxdesc->buffer1 = Buffer1;
rxdesc->data1 = Data1;
if ((rxnext % MODULO_INTERRUPT) != 0)
rxdesc->length |= RxDisIntCompl;
rxdesc->status = DescOwnByDma;
gmacdev->RxNext = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
gmacdev->RxNextDesc = (DmaDesc *)rxdesc->data2;
}
else
{
rxdesc->length |= (((Length1 << DescSize1Shift) & DescSize1Mask) | ((Length2 << DescSize2Shift) & DescSize2Mask));
rxdesc->buffer1 = Buffer1;
rxdesc->data1 = Data1;
rxdesc->buffer2 = Buffer2;
rxdesc->data2 = Data2;
if ((rxnext % MODULO_INTERRUPT) != 0)
rxdesc->length |= RxDisIntCompl;
rxdesc->status = DescOwnByDma;
gmacdev->RxNext = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
gmacdev->RxNextDesc = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? gmacdev->RxDesc : (rxdesc + 1);
}
#if SYNOP_RX_DEBUG
TR("%02d %08x %08x %08x %08x %08x %08x %08x\n", rxnext, (u32)rxdesc, rxdesc->status, rxdesc->length, rxdesc->buffer1, rxdesc->buffer2, rxdesc->data1, rxdesc->data2);
#endif
(gmacdev->BusyRxDesc)++; //One descriptor will be given to Hardware. So busy count incremented by one
return rxnext;
}
s32 synopGMAC_set_rx_qptr_init(synopGMACdevice *gmacdev, u32 Buffer1, u32 Length1, u64 Data1, u32 Buffer2, u32 Length2, u64 Data2)
{
u32 rxnext = gmacdev->RxNext;
DmaDesc *rxdesc = gmacdev->RxNextDesc;
/* sw
if(synopGMAC_is_desc_owned_by_dma(rxdesc))
return -1;
*/
if (!synopGMAC_is_desc_empty(rxdesc))
return -1;
if (synopGMAC_is_rx_desc_chained(rxdesc))
{
rxdesc->length |= ((Length1 << DescSize1Shift) & DescSize1Mask);
rxdesc->buffer1 = Buffer1;
rxdesc->data1 = Data1;
if ((rxnext % MODULO_INTERRUPT) != 0)
rxdesc->length |= RxDisIntCompl;
rxdesc->status = DescOwnByDma;
rxdesc->status = 0;
gmacdev->RxNext = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
gmacdev->RxNextDesc = (DmaDesc *)rxdesc->data2;
}
else
{
rxdesc->length |= (((Length1 << DescSize1Shift) & DescSize1Mask) | ((Length2 << DescSize2Shift) & DescSize2Mask));
rxdesc->buffer1 = Buffer1;
rxdesc->data1 = Data1;
rxdesc->buffer2 = Buffer2;
rxdesc->data2 = Data2;
if ((rxnext % MODULO_INTERRUPT) != 0)
rxdesc->length |= RxDisIntCompl;
rxdesc->status = DescOwnByDma;
rxdesc->status = 0;
gmacdev->RxNext = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
gmacdev->RxNextDesc = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? gmacdev->RxDesc : (rxdesc + 1);
}
TR("%02d %08x %08x %08x %08x %08x %08x %08x\n", rxnext, (u32)rxdesc, rxdesc->status, rxdesc->length, rxdesc->buffer1, rxdesc->buffer2, rxdesc->data1, rxdesc->data2);
(gmacdev->BusyRxDesc)++; //One descriptor will be given to Hardware. So busy count incremented by one
return rxnext;
}
#endif
#ifdef ENH_DESC_8W
/**
* This function is defined two times. Once when the code is compiled for ENHANCED DESCRIPTOR SUPPORT and Once for Normal descriptor
* Get back the descriptor from DMA after data has been received.
* When the DMA indicates that the data is received (interrupt is generated), this function should be
* called to get the descriptor and hence the data buffers received. With successful return from this
* function caller gets the descriptor fields for processing. check the parameters to understand the
* fields returned.`
* @param[in] pointer to synopGMACdevice.
* @param[out] pointer to hold the status of DMA.
* @param[out] Dma-able buffer1 pointer.
* @param[out] pointer to hold length of buffer1 (Max is 2048).
* @param[out] virtual pointer for buffer1.
* @param[out] Dma-able buffer2 pointer.
* @param[out] pointer to hold length of buffer2 (Max is 2048).
* @param[out] virtual pointer for buffer2.
* \return returns present rx descriptor index on success. Negative value if error.
*/
s32 synopGMAC_get_rx_qptr(synopGMACdevice *gmacdev, u32 *Status, u32 *Buffer1, u32 *Length1, u64 *Data1, u32 *Buffer2, u32 *Length2, u64 *Data2,
u32 *Ext_Status, u32 *Time_Stamp_High, u32 *Time_Stamp_Low)
{
u32 rxnext = gmacdev->RxBusy; // index of descriptor the DMA just completed. May be useful when data
//is spread over multiple buffers/descriptors
DmaDesc *rxdesc = gmacdev->RxBusyDesc;
if (synopGMAC_is_desc_owned_by_dma(rxdesc))
return -1;
if (synopGMAC_is_desc_empty(rxdesc))
return -1;
if (Status != 0)
*Status = rxdesc->status;// send the status of this descriptor
if (Ext_Status != 0)
*Ext_Status = rxdesc->extstatus;
if (Time_Stamp_High != 0)
*Time_Stamp_High = rxdesc->timestamphigh;
if (Time_Stamp_Low != 0)
*Time_Stamp_Low = rxdesc->timestamplow;
if (Length1 != 0)
*Length1 = (rxdesc->length & DescSize1Mask) >> DescSize1Shift;
if (Buffer1 != 0)
*Buffer1 = rxdesc->buffer1;
if (Data1 != 0)
*Data1 = rxdesc->data1;
if (Length2 != 0)
*Length2 = (rxdesc->length & DescSize2Mask) >> DescSize2Shift;
if (Buffer2 != 0)
*Buffer2 = rxdesc->buffer2;
if (Data1 != 0)
*Data2 = rxdesc->data2;
gmacdev->RxBusy = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
if (synopGMAC_is_rx_desc_chained(rxdesc))
{
gmacdev->RxBusyDesc = (DmaDesc *)rxdesc->data2;
synopGMAC_rx_desc_init_chain(rxdesc);
//synopGMAC_desc_init_chain(rxdesc, synopGMAC_is_last_rx_desc(gmacdev,rxdesc),0,0);
}
else
{
gmacdev->RxBusyDesc = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? gmacdev->RxDesc : (rxdesc + 1);
synopGMAC_rx_desc_init_ring(rxdesc, synopGMAC_is_last_rx_desc(gmacdev, rxdesc));
}
TR("%02d %08x %08x %08x %08x %08x %08x %08x\n", rxnext, (u32)rxdesc, rxdesc->status, rxdesc->length, rxdesc->buffer1, rxdesc->buffer2, rxdesc->data1, rxdesc->data2);
(gmacdev->BusyRxDesc)--; //busy tx descriptor is reduced by one as it will be handed over to Processor now
return (rxnext);
}
#else
/**
* Get back the descriptor from DMA after data has been received.
* When the DMA indicates that the data is received (interrupt is generated), this function should be
* called to get the descriptor and hence the data buffers received. With successful return from this
* function caller gets the descriptor fields for processing. check the parameters to understand the
* fields returned.`
* @param[in] pointer to synopGMACdevice.
* @param[out] pointer to hold the status of DMA.
* @param[out] Dma-able buffer1 pointer.
* @param[out] pointer to hold length of buffer1 (Max is 2048).
* @param[out] virtual pointer for buffer1.
* @param[out] Dma-able buffer2 pointer.
* @param[out] pointer to hold length of buffer2 (Max is 2048).
* @param[out] virtual pointer for buffer2.
* \return returns present rx descriptor index on success. Negative value if error.
*/
s32 synopGMAC_get_rx_qptr(synopGMACdevice *gmacdev, u32 *Status, u32 *Buffer1, u32 *Length1, u64 *Data1, u32 *Buffer2, u32 *Length2, u64 *Data2)
{
u32 rxnext = gmacdev->RxBusy; // index of descriptor the DMA just completed. May be useful when data
//is spread over multiple buffers/descriptors
DmaDesc *rxdesc = gmacdev->RxBusyDesc;
u32 len;
if (synopGMAC_is_desc_owned_by_dma(rxdesc))
{
DEBUG_MES("synopGMAC_get_rx_qptr:DMA descriptor is owned by GMAC!\n");
return -1;
}
if (synopGMAC_is_desc_empty(rxdesc))
{
DEBUG_MES("synopGMAC_get_rx_qptr:rx desc is empty!\n");
return -1;
}
if (Status != 0)
*Status = rxdesc->status;// send the status of this descriptor
if (Length1 != 0)
*Length1 = (rxdesc->length & DescSize1Mask) >> DescSize1Shift;
if (Buffer1 != 0)
*Buffer1 = rxdesc->buffer1;
if (Data1 != 0)
*Data1 = rxdesc->data1;
if (Length2 != 0)
*Length2 = (rxdesc->length & DescSize2Mask) >> DescSize2Shift;
if (Buffer2 != 0)
*Buffer2 = rxdesc->buffer2;
if (Data1 != 0)
*Data2 = rxdesc->data2;
len = synopGMAC_get_rx_desc_frame_length(*Status);
DEBUG_MES("Cache sync for data buffer in rx dma desc: length = 0x%x\n", len);
gmacdev->RxBusy = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? 0 : rxnext + 1;
if (synopGMAC_is_rx_desc_chained(rxdesc))
{
gmacdev->RxBusyDesc = (DmaDesc *)rxdesc->data2;
synopGMAC_rx_desc_init_chain(rxdesc);
}
else
{
gmacdev->RxBusyDesc = synopGMAC_is_last_rx_desc(gmacdev, rxdesc) ? gmacdev->RxDesc : (rxdesc + 1);
//sw: raw data
#if SYNOP_RX_DEBUG
DEBUG_MES("%02d %08x %08x %08x %08x %08x %08x %08x\n", rxnext, (u32)rxdesc, rxdesc->status, rxdesc->length, rxdesc->buffer1, rxdesc->buffer2, rxdesc->data1, rxdesc->data2);
#endif
synopGMAC_rx_desc_init_ring(rxdesc, synopGMAC_is_last_rx_desc(gmacdev, rxdesc));
}
#if SYNOP_RX_DEBUG
DEBUG_MES("%02d %08x %08x %08x %08x %08x %08x %08x\n", rxnext, (u32)rxdesc, rxdesc->status, rxdesc->length, rxdesc->buffer1, rxdesc->buffer2, rxdesc->data1, rxdesc->data2);
#endif
(gmacdev->BusyRxDesc)--; //This returns one descriptor to processor. So busy count will be decremented by one
return (rxnext);
}
#endif
/**
* Clears all the pending interrupts.
* If the Dma status register is read then all the interrupts gets cleared
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_clear_interrupt(synopGMACdevice *gmacdev)
{
u32 data;
data = synopGMACReadReg(gmacdev->DmaBase, DmaStatus);
TR("DMA status reg = 0x%x before cleared!\n", data);
synopGMACWriteReg(gmacdev->DmaBase, DmaStatus, data);
// plat_delay(DEFAULT_LOOP_VARIABLE);
// data = synopGMACReadReg(gmacdev->DmaBase, DmaStatus);
TR("DMA status reg = 0x%x after cleared!\n", data);
}
/**
* Returns the all unmasked interrupt status after reading the DmaStatus register.
* @param[in] pointer to synopGMACdevice.
* \return 0 upon success. Error code upon failure.
*/
u32 synopGMAC_get_interrupt_type(synopGMACdevice *gmacdev)
{
u32 data;
u32 interrupts = 0;
data = synopGMACReadReg(gmacdev->DmaBase, DmaStatus);
//data = data & ~0x84; //sw: some bits shoud not be cleaned
synopGMACWriteReg(gmacdev->DmaBase, DmaStatus, data); //manju: I think this is the appropriate location to clear the interrupts
plat_delay(DEFAULT_LOOP_VARIABLE);
if (data & DmaIntErrorMask) interrupts |= synopGMACDmaError;
if (data & DmaIntRxNormMask) interrupts |= synopGMACDmaRxNormal;
if (data & DmaIntRxAbnMask) interrupts |= synopGMACDmaRxAbnormal;
if (data & DmaIntRxStoppedMask) interrupts |= synopGMACDmaRxStopped;
if (data & DmaIntTxNormMask) interrupts |= synopGMACDmaTxNormal;
if (data & DmaIntTxAbnMask) interrupts |= synopGMACDmaTxAbnormal;
if (data & DmaIntTxStoppedMask) interrupts |= synopGMACDmaTxStopped;
return interrupts;
}
/**
* Returns the interrupt mask.
* @param[in] pointer to synopGMACdevice.
* \return 0 upon success. Error code upon failure.
*/
#if UNUSED
u32 synopGMAC_get_interrupt_mask(synopGMACdevice *gmacdev)
{
return (synopGMACReadReg(gmacdev->DmaBase, DmaInterrupt));
}
#endif
/**
* Enable all the interrupts.
* Enables the DMA interrupt as specified by the bit mask.
* @param[in] pointer to synopGMACdevice.
* @param[in] bit mask of interrupts to be enabled.
* \return returns void.
*/
#if UNUSED
void synopGMAC_enable_interrupt(synopGMACdevice *gmacdev, u32 interrupts)
{
synopGMACWriteReg(gmacdev->DmaBase, DmaInterrupt, interrupts);
return;
}
#endif
/**
* Disable all the interrupts.
* Disables all DMA interrupts.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note This function disabled all the interrupts, if you want to disable a particular interrupt then
* use synopGMAC_disable_interrupt().
*/
void synopGMAC_disable_interrupt_all(synopGMACdevice *gmacdev)
{
// rt_kprintf("dmabase = 0x%x\n",gmacdev->DmaBase);
synopGMACWriteReg(gmacdev->DmaBase, DmaInterrupt, DmaIntDisable);
// synopGMACReadReg(gmacdev->DmaBase, DmaInterrupt);
return;
}
/**
* Disable interrupt according to the bitfield supplied.
* Disables only those interrupts specified in the bit mask in second argument.
* @param[in] pointer to synopGMACdevice.
* @param[in] bit mask for interrupts to be disabled.
* \return returns void.
*/
#if UNUSED
void synopGMAC_disable_interrupt(synopGMACdevice *gmacdev, u32 interrupts)
{
synopGMACClearBits(gmacdev->DmaBase, DmaInterrupt, interrupts);
return;
}
#endif
/**
* Enable the DMA Reception.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_enable_dma_rx(synopGMACdevice *gmacdev)
{
// synopGMACSetBits(gmacdev->DmaBase, DmaControl, DmaRxStart);
u32 data;
data = synopGMACReadReg(gmacdev->DmaBase, DmaControl);
data |= DmaRxStart;
TR0(" ===33334\n");
synopGMACWriteReg(gmacdev->DmaBase, DmaControl, data);
TR0(" ===33344\n");
}
/**
* Enable the DMA Transmission.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_enable_dma_tx(synopGMACdevice *gmacdev)
{
// synopGMACSetBits(gmacdev->DmaBase, DmaControl, DmaTxStart);
u32 data;
data = synopGMACReadReg(gmacdev->DmaBase, DmaControl);
data |= DmaTxStart;
synopGMACWriteReg(gmacdev->DmaBase, DmaControl, data);
}
/**
* Resumes the DMA Transmission.
* the DmaTxPollDemand is written. (the data writeen could be anything).
* This forces the DMA to resume transmission.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_resume_dma_tx(synopGMACdevice *gmacdev)
{
synopGMACWriteReg(gmacdev->DmaBase, DmaTxPollDemand, 1);
}
/**
* Resumes the DMA Reception.
* the DmaRxPollDemand is written. (the data writeen could be anything).
* This forces the DMA to resume reception.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_resume_dma_rx(synopGMACdevice *gmacdev)
{
synopGMACWriteReg(gmacdev->DmaBase, DmaRxPollDemand, 0);
}
/**
* Take ownership of this Descriptor.
* The function is same for both the ring mode and the chain mode DMA structures.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_take_desc_ownership(DmaDesc *desc)
{
if (desc)
{
desc->status &= ~DescOwnByDma; //Clear the DMA own bit
// desc->status |= DescError; // Set the error to indicate this descriptor is bad
}
}
/**
* Take ownership of all the rx Descriptors.
* This function is called when there is fatal error in DMA transmission.
* When called it takes the ownership of all the rx descriptor in rx descriptor pool/queue from DMA.
* The function is same for both the ring mode and the chain mode DMA structures.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note Make sure to disable the transmission before calling this function, otherwise may result in racing situation.
*/
void synopGMAC_take_desc_ownership_rx(synopGMACdevice *gmacdev)
{
s32 i;
DmaDesc *desc;
desc = gmacdev->RxDesc;
for (i = 0; i < gmacdev->RxDescCount; i++)
{
if (synopGMAC_is_rx_desc_chained(desc)) //This descriptor is in chain mode
{
synopGMAC_take_desc_ownership(desc);
desc = (DmaDesc *)desc->data2;
}
else
{
synopGMAC_take_desc_ownership(desc + i);
}
}
}
/**
* Take ownership of all the rx Descriptors.
* This function is called when there is fatal error in DMA transmission.
* When called it takes the ownership of all the tx descriptor in tx descriptor pool/queue from DMA.
* The function is same for both the ring mode and the chain mode DMA structures.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
* \note Make sure to disable the transmission before calling this function, otherwise may result in racing situation.
*/
void synopGMAC_take_desc_ownership_tx(synopGMACdevice *gmacdev)
{
s32 i;
DmaDesc *desc;
desc = gmacdev->TxDesc;
for (i = 0; i < gmacdev->TxDescCount; i++)
{
if (synopGMAC_is_tx_desc_chained(desc)) //This descriptor is in chain mode
{
synopGMAC_take_desc_ownership(desc);
desc = (DmaDesc *)desc->data2;
}
else
{
synopGMAC_take_desc_ownership(desc + i);
}
}
}
/**
* Disable the DMA for Transmission.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_disable_dma_tx(synopGMACdevice *gmacdev)
{
// synopGMACClearBits(gmacdev->DmaBase, DmaControl, DmaTxStart);
u32 data;
data = synopGMACReadReg(gmacdev->DmaBase, DmaControl);
data &= (~DmaTxStart);
synopGMACWriteReg(gmacdev->DmaBase, DmaControl, data);
}
/**
* Disable the DMA for Reception.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_disable_dma_rx(synopGMACdevice *gmacdev)
{
// synopGMACClearBits(gmacdev->DmaBase, DmaControl, DmaRxStart);
u32 data;
data = synopGMACReadReg(gmacdev->DmaBase, DmaControl);
data &= (~DmaRxStart);
synopGMACWriteReg(gmacdev->DmaBase, DmaControl, data);
}
/*******************PMT APIs***************************************/
/**
* Enables the assertion of PMT interrupt.
* This enables the assertion of PMT interrupt due to Magic Pkt or Wakeup frame
* reception.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_pmt_int_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacInterruptMask, GmacPmtIntMask);
return;
}
#endif
/**
* Disables the assertion of PMT interrupt.
* This disables the assertion of PMT interrupt due to Magic Pkt or Wakeup frame
* reception.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_pmt_int_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacInterruptMask, GmacPmtIntMask);
return;
}
/**
* Enables the power down mode of GMAC.
* This function puts the Gmac in power down mode.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_power_down_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacPmtCtrlStatus, GmacPmtPowerDown);
return;
}
#endif
/**
* Disables the powerd down setting of GMAC.
* If the driver wants to bring up the GMAC from powerdown mode, even though the magic packet or the
* wake up frames received from the network, this function should be called.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_power_down_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacPmtCtrlStatus, GmacPmtPowerDown);
return;
}
#endif
/**
* Enables the pmt interrupt generation in powerdown mode.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_enable_pmt_interrupt(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacInterruptMask, GmacPmtIntMask);
}
#endif
/**
* Disables the pmt interrupt generation in powerdown mode.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_disable_pmt_interrupt(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacInterruptMask, GmacPmtIntMask);
}
#endif
/**
* Enables GMAC to look for Magic packet.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_magic_packet_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacPmtCtrlStatus, GmacPmtMagicPktEnable);
return;
}
#endif
/**
* Enables GMAC to look for wake up frame.
* Wake up frame is defined by the user.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_wakeup_frame_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacPmtCtrlStatus, GmacPmtWakeupFrameEnable);
return;
}
#endif
/**
* Enables wake-up frame filter to handle unicast packets.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_pmt_unicast_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacPmtCtrlStatus, GmacPmtGlobalUnicast);
return;
}
#endif
/**
* Checks whether the packet received is a magic packet?.
* @param[in] pointer to synopGMACdevice.
* \return returns True if magic packet received else returns false.
*/
bool synopGMAC_is_magic_packet_received(synopGMACdevice *gmacdev)
{
u32 data;
data = synopGMACReadReg(gmacdev->MacBase, GmacPmtCtrlStatus);
return ((data & GmacPmtMagicPktReceived) == GmacPmtMagicPktReceived);
}
/**
* Checks whether the packet received is a wakeup frame?.
* @param[in] pointer to synopGMACdevice.
* \return returns true if wakeup frame received else returns false.
*/
bool synopGMAC_is_wakeup_frame_received(synopGMACdevice *gmacdev)
{
u32 data;
data = synopGMACReadReg(gmacdev->MacBase, GmacPmtCtrlStatus);
return ((data & GmacPmtWakeupFrameReceived) == GmacPmtWakeupFrameReceived);
}
/**
* Populates the remote wakeup frame registers.
* Consecutive 8 writes to GmacWakeupAddr writes the wakeup frame filter registers.
* Before commensing a new write, frame filter pointer is reset to 0x0000.
* A small delay is introduced to allow frame filter pointer reset operation.
* @param[in] pointer to synopGMACdevice.
* @param[in] pointer to frame filter contents array.
* \return returns void.
*/
#if UNUSED
void synopGMAC_write_wakeup_frame_register(synopGMACdevice *gmacdev, u32 *filter_contents)
{
s32 i;
synopGMACSetBits(gmacdev->MacBase, GmacPmtCtrlStatus, GmacPmtFrmFilterPtrReset);
plat_delay(10);
for (i = 0; i < WAKEUP_REG_LENGTH; i++)
synopGMACWriteReg(gmacdev->MacBase, GmacWakeupAddr, *(filter_contents + i));
return;
}
#endif
/*******************PMT APIs***************************************/
/*******************MMC APIs***************************************/
/**
* Freezes the MMC counters.
* This function call freezes the MMC counters. None of the MMC counters are updated
* due to any tx or rx frames until synopGMAC_mmc_counters_resume is called.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_mmc_counters_stop(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacMmcCntrl, GmacMmcCounterFreeze);
return;
}
#endif
/**
* Resumes the MMC counter updation.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_mmc_counters_resume(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacMmcCntrl, GmacMmcCounterFreeze);
return;
}
#endif
/**
* Configures the MMC in Self clearing mode.
* Programs MMC interface so that counters are cleared when the counters are read.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_mmc_counters_set_selfclear(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacMmcCntrl, GmacMmcCounterResetOnRead);
return;
}
#endif
/**
* Configures the MMC in non-Self clearing mode.
* Programs MMC interface so that counters are cleared when the counters are read.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_mmc_counters_reset_selfclear(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacMmcCntrl, GmacMmcCounterResetOnRead);
return;
}
#endif
/**
* Configures the MMC to stop rollover.
* Programs MMC interface so that counters will not rollover after reaching maximum value.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_mmc_counters_disable_rollover(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacMmcCntrl, GmacMmcCounterStopRollover);
return;
}
/**
* Configures the MMC to rollover.
* Programs MMC interface so that counters will rollover after reaching maximum value.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_mmc_counters_enable_rollover(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacMmcCntrl, GmacMmcCounterStopRollover);
return;
}
/**
* Read the MMC Counter.
* @param[in] pointer to synopGMACdevice.
* @param[in] the counter to be read.
* \return returns the read count value.
*/
u32 synopGMAC_read_mmc_counter(synopGMACdevice *gmacdev, u32 counter)
{
return (synopGMACReadReg(gmacdev->MacBase, counter));
}
#endif
/**
* Read the MMC Rx interrupt status.
* @param[in] pointer to synopGMACdevice.
* \return returns the Rx interrupt status.
*/
u32 synopGMAC_read_mmc_rx_int_status(synopGMACdevice *gmacdev)
{
return (synopGMACReadReg(gmacdev->MacBase, GmacMmcIntrRx));
}
/**
* Read the MMC Tx interrupt status.
* @param[in] pointer to synopGMACdevice.
* \return returns the Tx interrupt status.
*/
u32 synopGMAC_read_mmc_tx_int_status(synopGMACdevice *gmacdev)
{
return (synopGMACReadReg(gmacdev->MacBase, GmacMmcIntrTx));
}
/**
* Disable the MMC Tx interrupt.
* The MMC tx interrupts are masked out as per the mask specified.
* @param[in] pointer to synopGMACdevice.
* @param[in] tx interrupt bit mask for which interrupts needs to be disabled.
* \return returns void.
*/
void synopGMAC_disable_mmc_tx_interrupt(synopGMACdevice *gmacdev, u32 mask)
{
synopGMACSetBits(gmacdev->MacBase, GmacMmcIntrMaskTx, mask);
return;
}
/**
* Enable the MMC Tx interrupt.
* The MMC tx interrupts are enabled as per the mask specified.
* @param[in] pointer to synopGMACdevice.
* @param[in] tx interrupt bit mask for which interrupts needs to be enabled.
* \return returns void.
*/
#if UNUSED
void synopGMAC_enable_mmc_tx_interrupt(synopGMACdevice *gmacdev, u32 mask)
{
synopGMACClearBits(gmacdev->MacBase, GmacMmcIntrMaskTx, mask);
}
#endif
/**
* Disable the MMC Rx interrupt.
* The MMC rx interrupts are masked out as per the mask specified.
* @param[in] pointer to synopGMACdevice.
* @param[in] rx interrupt bit mask for which interrupts needs to be disabled.
* \return returns void.
*/
void synopGMAC_disable_mmc_rx_interrupt(synopGMACdevice *gmacdev, u32 mask)
{
synopGMACSetBits(gmacdev->MacBase, GmacMmcIntrMaskRx, mask);
return;
}
/**
* Enable the MMC Rx interrupt.
* The MMC rx interrupts are enabled as per the mask specified.
* @param[in] pointer to synopGMACdevice.
* @param[in] rx interrupt bit mask for which interrupts needs to be enabled.
* \return returns void.
*/
#if UNUSED
void synopGMAC_enable_mmc_rx_interrupt(synopGMACdevice *gmacdev, u32 mask)
{
synopGMACClearBits(gmacdev->MacBase, GmacMmcIntrMaskRx, mask);
return;
}
#endif
/**
* Disable the MMC ipc rx checksum offload interrupt.
* The MMC ipc rx checksum offload interrupts are masked out as per the mask specified.
* @param[in] pointer to synopGMACdevice.
* @param[in] rx interrupt bit mask for which interrupts needs to be disabled.
* \return returns void.
*/
void synopGMAC_disable_mmc_ipc_rx_interrupt(synopGMACdevice *gmacdev, u32 mask)
{
synopGMACSetBits(gmacdev->MacBase, GmacMmcRxIpcIntrMask, mask);
return;
}
/**
* Enable the MMC ipc rx checksum offload interrupt.
* The MMC ipc rx checksum offload interrupts are enabled as per the mask specified.
* @param[in] pointer to synopGMACdevice.
* @param[in] rx interrupt bit mask for which interrupts needs to be enabled.
* \return returns void.
*/
#if UNUSED
void synopGMAC_enable_mmc_ipc_rx_interrupt(synopGMACdevice *gmacdev, u32 mask)
{
synopGMACClearBits(gmacdev->MacBase, GmacMmcRxIpcIntrMask, mask);
return;
}
#endif
/*******************MMC APIs***************************************/
/*******************Ip checksum offloading APIs***************************************/
/**
* Enables the ip checksum offloading in receive path.
* When set GMAC calculates 16 bit 1's complement of all received ethernet frame payload.
* It also checks IPv4 Header checksum is correct. GMAC core appends the 16 bit checksum calculated
* for payload of IP datagram and appends it to Ethernet frame transferred to the application.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
#if UNUSED
void synopGMAC_enable_rx_chksum_offload(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacConfig, GmacRxIpcOffload);
return;
}
/**
* Disable the ip checksum offloading in receive path.
* Ip checksum offloading is disabled in the receive path.
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_disable_rx_Ipchecksum_offload(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacConfig, GmacRxIpcOffload);
}
/**
* Instruct the DMA to drop the packets fails tcp ip checksum.
* This is to instruct the receive DMA engine to drop the recevied packet if they
* fails the tcp/ip checksum in hardware. Valid only when full checksum offloading is enabled(type-2).
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_rx_tcpip_chksum_drop_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->DmaBase, DmaControl, DmaDisableDropTcpCs);
return;
}
/**
* Instruct the DMA not to drop the packets even if it fails tcp ip checksum.
* This is to instruct the receive DMA engine to allow the packets even if recevied packet
* fails the tcp/ip checksum in hardware. Valid only when full checksum offloading is enabled(type-2).
* @param[in] pointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_rx_tcpip_chksum_drop_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->DmaBase, DmaControl, DmaDisableDropTcpCs);
return;
}
#endif
/**
* When the Enhanced Descriptor is enabled then the bit 0 of RDES0 indicates whether the
* Extended Status is available (RDES4). Time Stamp feature and the Checksum Offload Engine2
* makes use of this extended status to provide the status of the received packet.
* @param[in] pointer to synopGMACdevice
* \return returns TRUE or FALSE
*/
#ifdef ENH_DESC_8W
/**
* This function indicates whether extended status is available in the RDES0.
* Any function which accesses the fields of extended status register must ensure a check on this has been made
* This is valid only for Enhanced Descriptor.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns TRUE or FALSE.
*/
bool synopGMAC_is_ext_status(synopGMACdevice *gmacdev, u32 status) // extended status present indicates that the RDES4 need to be probed
{
return ((status & DescRxEXTsts) != 0); // if extstatus set then it returns 1
}
/**
* This function returns true if the IP header checksum bit is set in the extended status.
* Valid only when enhaced status available is set in RDES0 bit 0.
* This is valid only for Enhanced Descriptor.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns TRUE or FALSE.
*/
bool synopGMAC_ES_is_IP_header_error(synopGMACdevice *gmacdev, u32 ext_status) // IP header (IPV4) checksum error
{
return ((ext_status & DescRxIpHeaderError) != 0); // if IPV4 header error return 1
}
/**
* This function returns true if the Checksum is bypassed in the hardware.
* Valid only when enhaced status available is set in RDES0 bit 0.
* This is valid only for Enhanced Descriptor.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns TRUE or FALSE.
*/
bool synopGMAC_ES_is_rx_checksum_bypassed(synopGMACdevice *gmacdev, u32 ext_status) // Hardware engine bypassed the checksum computation/checking
{
return ((ext_status & DescRxChkSumBypass) != 0); // if checksum offloading bypassed return 1
}
/**
* This function returns true if payload checksum error is set in the extended status.
* Valid only when enhaced status available is set in RDES0 bit 0.
* This is valid only for Enhanced Descriptor.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns TRUE or FALSE.
*/
bool synopGMAC_ES_is_IP_payload_error(synopGMACdevice *gmacdev, u32 ext_status) // IP payload checksum is in error (UDP/TCP/ICMP checksum error)
{
return ((ext_status & DescRxIpPayloadError) != 0); // if IP payload error return 1
}
#endif
/**
* Decodes the Rx Descriptor status to various checksum error conditions.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns decoded enum (u32) indicating the status.
*/
u32 synopGMAC_is_rx_checksum_error(synopGMACdevice *gmacdev, u32 status)
{
if (((status & DescRxChkBit5) == 0) && ((status & DescRxChkBit7) == 0) && ((status & DescRxChkBit0) == 0))
return RxLenLT600;
else if (((status & DescRxChkBit5) == 0) && ((status & DescRxChkBit7) == 0) && ((status & DescRxChkBit0) != 0))
return RxIpHdrPayLoadChkBypass;
else if (((status & DescRxChkBit5) == 0) && ((status & DescRxChkBit7) != 0) && ((status & DescRxChkBit0) != 0))
return RxChkBypass;
else if (((status & DescRxChkBit5) != 0) && ((status & DescRxChkBit7) == 0) && ((status & DescRxChkBit0) == 0))
return RxNoChkError;
else if (((status & DescRxChkBit5) != 0) && ((status & DescRxChkBit7) == 0) && ((status & DescRxChkBit0) != 0))
return RxPayLoadChkError;
else if (((status & DescRxChkBit5) != 0) && ((status & DescRxChkBit7) != 0) && ((status & DescRxChkBit0) == 0))
return RxIpHdrChkError;
else if (((status & DescRxChkBit5) != 0) && ((status & DescRxChkBit7) != 0) && ((status & DescRxChkBit0) != 0))
return RxIpHdrPayLoadChkError;
else
return RxIpHdrPayLoadRes;
}
/**
* Checks if any Ipv4 header checksum error in the frame just transmitted.
* This serves as indication that error occureed in the IPv4 header checksum insertion.
* The sent out frame doesnot carry any ipv4 header checksum inserted by the hardware.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns true if error in ipv4 header checksum, else returns false.
*/
bool synopGMAC_is_tx_ipv4header_checksum_error(synopGMACdevice *gmacdev, u32 status)
{
return ((status & DescTxIpv4ChkError) == DescTxIpv4ChkError);
}
/**
* Checks if any payload checksum error in the frame just transmitted.
* This serves as indication that error occureed in the payload checksum insertion.
* The sent out frame doesnot carry any payload checksum inserted by the hardware.
* @param[in] pointer to synopGMACdevice.
* @param[in] u32 status field of the corresponding descriptor.
* \return returns true if error in ipv4 header checksum, else returns false.
*/
bool synopGMAC_is_tx_payload_checksum_error(synopGMACdevice *gmacdev, u32 status)
{
return ((status & DescTxPayChkError) == DescTxPayChkError);
}
/**
* The check summ offload engine is bypassed in the tx path.
* Checksum is not computed in the Hardware.
* @param[in] pointer to synopGMACdevice.
* @param[in] Pointer to tx descriptor for which ointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_tx_checksum_offload_bypass(synopGMACdevice *gmacdev, DmaDesc *desc)
{
#ifdef ENH_DESC
desc->status = (desc->length & (~DescTxCisMask));//ENH_DESC
#else
desc->length = (desc->length & (~DescTxCisMask));
#endif
}
/**
* The check summ offload engine is enabled to do only IPV4 header checksum.
* IPV4 header Checksum is computed in the Hardware.
* @param[in] pointer to synopGMACdevice.
* @param[in] Pointer to tx descriptor for which ointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_tx_checksum_offload_ipv4hdr(synopGMACdevice *gmacdev, DmaDesc *desc)
{
#ifdef ENH_DESC
desc->status = ((desc->status & (~DescTxCisMask)) | DescTxCisIpv4HdrCs);//ENH_DESC
#else
desc->length = ((desc->length & (~DescTxCisMask)) | DescTxCisIpv4HdrCs);
#endif
}
/**
* The check summ offload engine is enabled to do TCPIP checsum assuming Pseudo header is available.
* Hardware computes the tcp ip checksum assuming pseudo header checksum is computed in software.
* Ipv4 header checksum is also inserted.
* @param[in] pointer to synopGMACdevice.
* @param[in] Pointer to tx descriptor for which ointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_tx_checksum_offload_tcponly(synopGMACdevice *gmacdev, DmaDesc *desc)
{
#ifdef ENH_DESC
desc->status = ((desc->status & (~DescTxCisMask)) | DescTxCisTcpOnlyCs);//ENH_DESC
#else
desc->length = ((desc->length & (~DescTxCisMask)) | DescTxCisTcpOnlyCs);
#endif
}
/**
* The check summ offload engine is enabled to do complete checksum computation.
* Hardware computes the tcp ip checksum including the pseudo header checksum.
* Here the tcp payload checksum field should be set to 0000.
* Ipv4 header checksum is also inserted.
* @param[in] pointer to synopGMACdevice.
* @param[in] Pointer to tx descriptor for which ointer to synopGMACdevice.
* \return returns void.
*/
void synopGMAC_tx_checksum_offload_tcp_pseudo(synopGMACdevice *gmacdev, DmaDesc *desc)
{
#ifdef ENH_DESC
desc->status = ((desc->length & (~DescTxCisMask)) | DescTxCisTcpPseudoCs);
#else
desc->length = ((desc->length & (~DescTxCisMask)) | DescTxCisTcpPseudoCs);
#endif
}
/*******************Ip checksum offloading APIs***************************************/
/*******************IEEE 1588 Timestamping API***************************************/
/*
* At this time the driver supports the IEEE time stamping feature when the Enhanced Descriptors are enabled.
* For normal descriptor and the IEEE time stamp (version 1), driver support is not proviced
* Please make sure you have enabled the Advanced timestamp feature in the hardware and the driver should
* be compiled with the ADV_TME_STAMP feature.
* Some of the APIs provided here may not be valid for all configurations. Please make sure you call the
* API with due care.
*/
/**
* This function enables the timestamping. This enables the timestamping for transmit and receive frames.
* When disabled timestamp is not added to tx and receive frames and timestamp generator is suspended.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
#if UNUSED
void synopGMAC_TS_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSENA);
return;
}
/**
* This function disables the timestamping.
* When disabled timestamp is not added to tx and receive frames and timestamp generator is suspended.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacInterruptMask, GmacTSIntMask);
return;
}
/**
* Enable the interrupt to get timestamping interrupt.
* This enables the host to get the interrupt when (1) system time is greater or equal to the
* target time high and low register or (2) there is a overflow in th esecond register.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_int_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacInterruptMask, GmacPmtIntMask);
return;
}
/**
* Disable the interrupt to get timestamping interrupt.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_int_disable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacInterruptMask, GmacPmtIntMask);
return;
}
/**
* Enable MAC address for PTP frame filtering.
* When enabled, uses MAC address (apart from MAC address 0) to filter the PTP frames when
* PTP is sent directly over Ethernet.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_mac_addr_filt_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSENMACADDR);
return;
}
/**
* Disables MAC address for PTP frame filtering.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_mac_addr_filt_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSENMACADDR);
return;
}
/**
* Selet the type of clock mode for PTP.
* Please note to use one of the follwoing as the clk_type argument.
* GmacTSOrdClk = 0x00000000, 00=> Ordinary clock
* GmacTSBouClk = 0x00010000, 01=> Boundary clock
* GmacTSEtoEClk = 0x00020000, 10=> End-to-End transparent clock
* GmacTSPtoPClk = 0x00030000, 11=> P-to-P transparent clock
* @param[in] pointer to synopGMACdevice
* @param[in] u32 value representing one of the above clk value
* \return returns void
*/
void synopGMAC_TS_set_clk_type(synopGMACdevice *gmacdev, u32 clk_type)
{
u32 clkval;
clkval = synopGMACReadReg(gmacdev->MacBase, GmacTSControl); //set the mdc clock to the user defined value
clkval = clkval | clk_type;
synopGMACWriteReg(gmacdev->MacBase, GmacTSControl, clkval);
return;
}
/**
* Enable Snapshot for messages relevant to Master.
* When enabled, snapshot is taken for messages relevant to master mode only, else snapshot is taken for messages relevant
* to slave node.
* Valid only for Ordinary clock and Boundary clock
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_master_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSMSTRENA);
return;
}
/**
* Disable Snapshot for messages relevant to Master.
* When disabled, snapshot is taken for messages relevant
* to slave node.
* Valid only for Ordinary clock and Boundary clock
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_master_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSMSTRENA);
return;
}
/**
* Enable Snapshot for Event messages.
* When enabled, snapshot is taken for event messages only (SYNC, Delay_Req, Pdelay_Req or Pdelay_Resp)
* When disabled, snapshot is taken for all messages except Announce, Management and Signaling.
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_event_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSEVNTENA);
return;
}
/**
* Disable Snapshot for Event messages.
* When disabled, snapshot is taken for all messages except Announce, Management and Signaling.
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_event_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSEVNTENA);
return;
}
/**
* Enable time stamp snapshot for IPV4 frames.
* When enabled, time stamp snapshot is taken for IPV4 frames
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_IPV4_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSIPV4ENA);
return;
}
/**
* Disable time stamp snapshot for IPV4 frames.
* When disabled, time stamp snapshot is not taken for IPV4 frames
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_IPV4_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSIPV4ENA);
return;
} // Only for "Advanced Time Stamp"
/**
* Enable time stamp snapshot for IPV6 frames.
* When enabled, time stamp snapshot is taken for IPV6 frames
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_IPV6_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSIPV6ENA);
return;
}
/**
* Disable time stamp snapshot for IPV6 frames.
* When disabled, time stamp snapshot is not taken for IPV6 frames
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_IPV6_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSIPV6ENA);
return;
}
/**
* Enable time stamp snapshot for PTP over Ethernet frames.
* When enabled, time stamp snapshot is taken for PTP over Ethernet frames
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_ptp_over_ethernet_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSIPENA);
return;
}
/**
* Disable time stamp snapshot for PTP over Ethernet frames.
* When disabled, time stamp snapshot is not taken for PTP over Ethernet frames
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_ptp_over_ethernet_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSIPENA);
return;
}
/**
* Snoop PTP packet for version 2 format
* When set the PTP packets are snooped using the version 2 format.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_pkt_snoop_ver2(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSVER2ENA);
return;
}
/**
* Snoop PTP packet for version 2 format
* When set the PTP packets are snooped using the version 2 format.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_pkt_snoop_ver1(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSVER2ENA);
return;
}
/**
* Timestamp digital rollover
* When set the timestamp low register rolls over after 0x3B9A_C9FF value.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_digital_rollover_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSCTRLSSR);
return;
}
/**
* Timestamp binary rollover
* When set the timestamp low register rolls over after 0x7FFF_FFFF value.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_binary_rollover_enable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSCTRLSSR);
return;
}
/**
* Enable Time Stamp for All frames
* When set the timestamp snap shot is enabled for all frames received by the core.
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_all_frames_enable(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSENALL);
return;
}
/**
* Disable Time Stamp for All frames
* When reset the timestamp snap shot is not enabled for all frames received by the core.
* Reserved when "Advanced Time Stamp" is not selected
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_all_frames_disable(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSENALL);
return;
}
/**
* Addend Register Update
* This function loads the contents of Time stamp addend register with the supplied 32 value.
* This is reserved function when only coarse correction option is selected
* @param[in] pointer to synopGMACdevice
* @param[in] 32 bit addend value
* \return returns 0 for Success or else Failure
*/
s32 synopGMAC_TS_addend_update(synopGMACdevice *gmacdev, u32 addend_value)
{
u32 loop_variable;
synopGMACWriteReg(gmacdev->MacBase, GmacTSAddend, addend_value); // Load the addend_value in to Addend register
for (loop_variable = 0; loop_variable < DEFAULT_LOOP_VARIABLE; loop_variable++) //Wait till the busy bit gets cleared with in a certain amount of time
{
if (!((synopGMACReadReg(gmacdev->MacBase, GmacTSControl)) & GmacTSADDREG)) // if it is cleared then break
{
break;
}
plat_delay(DEFAULT_DELAY_VARIABLE);
}
if (loop_variable < DEFAULT_LOOP_VARIABLE)
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSADDREG);
else
{
TR("Error::: The TSADDREG bit is not getting cleared !!!!!!\n");
return -ESYNOPGMACPHYERR;
}
return -ESYNOPGMACNOERR;
}
/**
* time stamp Update
* This function updates (adds/subtracts) with the value specified in the Timestamp High Update and
* Timestamp Low Update register.
* @param[in] pointer to synopGMACdevice
* @param[in] Timestamp High Update value
* @param[in] Timestamp Low Update value
* \return returns 0 for Success or else Failure
*/
s32 synopGMAC_TS_timestamp_update(synopGMACdevice *gmacdev, u32 high_value, u32 low_value)
{
u32 loop_variable;
synopGMACWriteReg(gmacdev->MacBase, GmacTSHighUpdate, high_value); // Load the high value to Timestamp High register
synopGMACWriteReg(gmacdev->MacBase, GmacTSLowUpdate, low_value); // Load the high value to Timestamp High register
for (loop_variable = 0; loop_variable < DEFAULT_LOOP_VARIABLE; loop_variable++) //Wait till the busy bit gets cleared with in a certain amount of time
{
if (!((synopGMACReadReg(gmacdev->MacBase, GmacTSControl)) & GmacTSUPDT)) // if it is cleared then break
{
break;
}
plat_delay(DEFAULT_DELAY_VARIABLE);
}
if (loop_variable < DEFAULT_LOOP_VARIABLE)
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSUPDT);
else
{
TR("Error::: The TSADDREG bit is not getting cleared !!!!!!\n");
return -ESYNOPGMACPHYERR;
}
return -ESYNOPGMACNOERR;
}
/**
* time stamp Initialize
* This function Loads/Initializes h the value specified in the Timestamp High Update and
* Timestamp Low Update register.
* @param[in] pointer to synopGMACdevice
* @param[in] Timestamp High Load value
* @param[in] Timestamp Low Load value
* \return returns 0 for Success or else Failure
*/
s32 synopGMAC_TS_timestamp_init(synopGMACdevice *gmacdev, u32 high_value, u32 low_value)
{
u32 loop_variable;
synopGMACWriteReg(gmacdev->MacBase, GmacTSHighUpdate, high_value); // Load the high value to Timestamp High register
synopGMACWriteReg(gmacdev->MacBase, GmacTSLowUpdate, low_value); // Load the high value to Timestamp High register
for (loop_variable = 0; loop_variable < DEFAULT_LOOP_VARIABLE; loop_variable++) //Wait till the busy bit gets cleared with in a certain amount of time
{
if (!((synopGMACReadReg(gmacdev->MacBase, GmacTSControl)) & GmacTSINT)) // if it is cleared then break
{
break;
}
plat_delay(DEFAULT_DELAY_VARIABLE);
}
if (loop_variable < DEFAULT_LOOP_VARIABLE)
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSINT);
else
{
TR("Error::: The TSADDREG bit is not getting cleared !!!!!!\n");
return -ESYNOPGMACPHYERR;
}
return -ESYNOPGMACNOERR;
}
/**
* Time Stamp Update Coarse
* When reset the timestamp update is done using coarse method.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_coarse_update(synopGMACdevice *gmacdev)
{
synopGMACClearBits(gmacdev->MacBase, GmacTSControl, GmacTSCFUPDT);
return;
}
/**
* Time Stamp Update Fine
* When reset the timestamp update is done using Fine method.
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_fine_update(synopGMACdevice *gmacdev)
{
synopGMACSetBits(gmacdev->MacBase, GmacTSControl, GmacTSCFUPDT);
return;
}
/**
* Load the Sub Second Increment value in to Sub Second increment register
* @param[in] pointer to synopGMACdevice
* \return returns void
*/
void synopGMAC_TS_subsecond_init(synopGMACdevice *gmacdev, u32 sub_sec_inc_value)
{
synopGMACWriteReg(gmacdev->MacBase, GmacTSSubSecIncr, (sub_sec_inc_value & GmacSSINCMsk));
return;
}
/**
* Reads the time stamp contents in to the respective pointers
* These registers are readonly.
* This function returns the 48 bit time stamp assuming Version 2 timestamp with higher word is selected.
* @param[in] pointer to synopGMACdevice
* @param[in] pointer to hold 16 higher bit second register contents
* @param[in] pointer to hold 32 bit second register contents
* @param[in] pointer to hold 32 bit subnanosecond register contents
* \return returns void
* \note Please note that since the atomic access to the timestamp registers is not possible,
* the contents read may be different from the actual time stamp.
*/
void synopGMAC_TS_read_timestamp(synopGMACdevice *gmacdev, u16 *higher_sec_val, u32 *sec_val, u32 *sub_sec_val)
{
* higher_sec_val = (u16)(synopGMACReadReg(gmacdev->MacBase, GmacTSHighWord) & GmacTSHighWordMask);
* sec_val = synopGMACReadReg(gmacdev->MacBase, GmacTSHigh);
* sub_sec_val = synopGMACReadReg(gmacdev->MacBase, GmacTSLow);
return;
}
/**
* Loads the time stamp higher sec value from the value supplied
* @param[in] pointer to synopGMACdevice
* @param[in] 16 higher bit second register contents passed as 32 bit value
* \return returns void
*/
void synopGMAC_TS_load_timestamp_higher_val(synopGMACdevice *gmacdev, u32 higher_sec_val)
{
synopGMACWriteReg(gmacdev->MacBase, GmacTSHighWord, (higher_sec_val & GmacTSHighWordMask));
return;
}
/**
* Reads the time stamp higher sec value to respective pointers
* @param[in] pointer to synopGMACdevice
* @param[in] pointer to hold 16 higher bit second register contents
* \return returns void
*/
void synopGMAC_TS_read_timestamp_higher_val(synopGMACdevice *gmacdev, u16 *higher_sec_val)
{
* higher_sec_val = (u16)(synopGMACReadReg(gmacdev->MacBase, GmacTSHighWord) & GmacTSHighWordMask);
return;
}
/**
* Load the Target time stamp registers
* This function Loads the target time stamp registers with the values proviced
* @param[in] pointer to synopGMACdevice
* @param[in] target Timestamp High value
* @param[in] target Timestamp Low value
* \return returns 0 for Success or else Failure
*/
void synopGMAC_TS_load_target_timestamp(synopGMACdevice *gmacdev, u32 sec_val, u32 sub_sec_val)
{
synopGMACWriteReg(gmacdev->MacBase, GmacTSTargetTimeHigh, sec_val);
synopGMACWriteReg(gmacdev->MacBase, GmacTSTargetTimeLow, sub_sec_val);
return;
}
/**
* Reads the Target time stamp registers
* This function Loads the target time stamp registers with the values proviced
* @param[in] pointer to synopGMACdevice
* @param[in] pointer to hold target Timestamp High value
* @param[in] pointer to hold target Timestamp Low value
* \return returns 0 for Success or else Failure
*/
void synopGMAC_TS_read_target_timestamp(synopGMACdevice *gmacdev, u32 *sec_val, u32 *sub_sec_val)
{
* sec_val = synopGMACReadReg(gmacdev->MacBase, GmacTSTargetTimeHigh);
* sub_sec_val = synopGMACReadReg(gmacdev->MacBase, GmacTSTargetTimeLow);
return;
}
#endif
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