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![Joachim Foerster](/assets/img/avatar_default.png)
It seems to be good practice to return the number of received bytes in the eth_device's recv() callback, here: tse_eth_rx(). Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
970 lines
26 KiB
C
970 lines
26 KiB
C
/*
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* Altera 10/100/1000 triple speed ethernet mac driver
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*
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* Copyright (C) 2008 Altera Corporation.
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* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <config.h>
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#include <common.h>
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#include <malloc.h>
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#include <net.h>
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#include <command.h>
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#include <asm/cache.h>
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#include <asm/dma-mapping.h>
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#include <miiphy.h>
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#include "altera_tse.h"
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/* sgdma debug - print descriptor */
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static void alt_sgdma_print_desc(volatile struct alt_sgdma_descriptor *desc)
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{
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debug("SGDMA DEBUG :\n");
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debug("desc->source : 0x%x \n", (unsigned int)desc->source);
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debug("desc->destination : 0x%x \n", (unsigned int)desc->destination);
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debug("desc->next : 0x%x \n", (unsigned int)desc->next);
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debug("desc->source_pad : 0x%x \n", (unsigned int)desc->source_pad);
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debug("desc->destination_pad : 0x%x \n",
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(unsigned int)desc->destination_pad);
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debug("desc->next_pad : 0x%x \n", (unsigned int)desc->next_pad);
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debug("desc->bytes_to_transfer : 0x%x \n",
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(unsigned int)desc->bytes_to_transfer);
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debug("desc->actual_bytes_transferred : 0x%x \n",
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(unsigned int)desc->actual_bytes_transferred);
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debug("desc->descriptor_status : 0x%x \n",
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(unsigned int)desc->descriptor_status);
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debug("desc->descriptor_control : 0x%x \n",
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(unsigned int)desc->descriptor_control);
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}
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/* This is a generic routine that the SGDMA mode-specific routines
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* call to populate a descriptor.
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* arg1 :pointer to first SGDMA descriptor.
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* arg2 :pointer to next SGDMA descriptor.
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* arg3 :Address to where data to be written.
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* arg4 :Address from where data to be read.
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* arg5 :no of byte to transaction.
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* arg6 :variable indicating to generate start of packet or not
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* arg7 :read fixed
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* arg8 :write fixed
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* arg9 :read burst
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* arg10 :write burst
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* arg11 :atlantic_channel number
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*/
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static void alt_sgdma_construct_descriptor_burst(
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volatile struct alt_sgdma_descriptor *desc,
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volatile struct alt_sgdma_descriptor *next,
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unsigned int *read_addr,
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unsigned int *write_addr,
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unsigned short length_or_eop,
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int generate_eop,
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int read_fixed,
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int write_fixed_or_sop,
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int read_burst,
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int write_burst,
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unsigned char atlantic_channel)
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{
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/*
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* Mark the "next" descriptor as "not" owned by hardware. This prevents
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* The SGDMA controller from continuing to process the chain. This is
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* done as a single IO write to bypass cache, without flushing
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* the entire descriptor, since only the 8-bit descriptor status must
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* be flushed.
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*/
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if (!next)
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debug("Next descriptor not defined!!\n");
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next->descriptor_control = (next->descriptor_control &
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~ALT_SGDMA_DESCRIPTOR_CONTROL_OWNED_BY_HW_MSK);
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desc->source = (unsigned int *)((unsigned int)read_addr & 0x1FFFFFFF);
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desc->destination =
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(unsigned int *)((unsigned int)write_addr & 0x1FFFFFFF);
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desc->next = (unsigned int *)((unsigned int)next & 0x1FFFFFFF);
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desc->source_pad = 0x0;
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desc->destination_pad = 0x0;
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desc->next_pad = 0x0;
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desc->bytes_to_transfer = length_or_eop;
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desc->actual_bytes_transferred = 0;
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desc->descriptor_status = 0x0;
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/* SGDMA burst not currently supported */
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desc->read_burst = 0;
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desc->write_burst = 0;
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/*
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* Set the descriptor control block as follows:
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* - Set "owned by hardware" bit
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* - Optionally set "generate EOP" bit
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* - Optionally set the "read from fixed address" bit
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* - Optionally set the "write to fixed address bit (which serves
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* serves as a "generate SOP" control bit in memory-to-stream mode).
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* - Set the 4-bit atlantic channel, if specified
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*
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* Note this step is performed after all other descriptor information
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* has been filled out so that, if the controller already happens to be
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* pointing at this descriptor, it will not run (via the "owned by
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* hardware" bit) until all other descriptor has been set up.
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*/
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desc->descriptor_control =
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((ALT_SGDMA_DESCRIPTOR_CONTROL_OWNED_BY_HW_MSK) |
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(generate_eop ?
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ALT_SGDMA_DESCRIPTOR_CONTROL_GENERATE_EOP_MSK : 0x0) |
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(read_fixed ?
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ALT_SGDMA_DESCRIPTOR_CONTROL_READ_FIXED_ADDRESS_MSK : 0x0) |
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(write_fixed_or_sop ?
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ALT_SGDMA_DESCRIPTOR_CONTROL_WRITE_FIXED_ADDRESS_MSK : 0x0) |
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(atlantic_channel ? ((atlantic_channel & 0x0F) << 3) : 0)
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);
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}
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static int alt_sgdma_do_sync_transfer(volatile struct alt_sgdma_registers *dev,
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volatile struct alt_sgdma_descriptor *desc)
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{
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unsigned int status;
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int counter = 0;
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/* Wait for any pending transfers to complete */
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alt_sgdma_print_desc(desc);
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status = dev->status;
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counter = 0;
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while (dev->status & ALT_SGDMA_STATUS_BUSY_MSK) {
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if (counter++ > ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
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break;
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}
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if (counter >= ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
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debug("Timeout waiting sgdma in do sync!\n");
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/*
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* Clear any (previous) status register information
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* that might occlude our error checking later.
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*/
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dev->status = 0xFF;
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/* Point the controller at the descriptor */
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dev->next_descriptor_pointer = (unsigned int)desc & 0x1FFFFFFF;
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debug("next desc in sgdma 0x%x\n",
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(unsigned int)dev->next_descriptor_pointer);
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/*
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* Set up SGDMA controller to:
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* - Disable interrupt generation
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* - Run once a valid descriptor is written to controller
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* - Stop on an error with any particular descriptor
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*/
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dev->control = (ALT_SGDMA_CONTROL_RUN_MSK |
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ALT_SGDMA_CONTROL_STOP_DMA_ER_MSK);
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/* Wait for the descriptor (chain) to complete */
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status = dev->status;
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debug("wait for sgdma....");
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while (dev->status & ALT_SGDMA_STATUS_BUSY_MSK)
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;
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debug("done\n");
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/* Clear Run */
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dev->control = (dev->control & (~ALT_SGDMA_CONTROL_RUN_MSK));
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/* Get & clear status register contents */
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status = dev->status;
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dev->status = 0xFF;
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/* we really should check if the transfer completes properly */
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debug("tx sgdma status = 0x%x", status);
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return 0;
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}
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static int alt_sgdma_do_async_transfer(volatile struct alt_sgdma_registers *dev,
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volatile struct alt_sgdma_descriptor *desc)
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{
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unsigned int status;
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int counter = 0;
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/* Wait for any pending transfers to complete */
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alt_sgdma_print_desc(desc);
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status = dev->status;
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counter = 0;
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while (dev->status & ALT_SGDMA_STATUS_BUSY_MSK) {
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if (counter++ > ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
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break;
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}
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if (counter >= ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
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debug("Timeout waiting sgdma in do async!\n");
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/*
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* Clear the RUN bit in the control register. This is needed
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* to restart the SGDMA engine later on.
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*/
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dev->control = 0;
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/*
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* Clear any (previous) status register information
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* that might occlude our error checking later.
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*/
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dev->status = 0xFF;
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/* Point the controller at the descriptor */
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dev->next_descriptor_pointer = (unsigned int)desc & 0x1FFFFFFF;
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/*
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* Set up SGDMA controller to:
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* - Disable interrupt generation
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* - Run once a valid descriptor is written to controller
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* - Stop on an error with any particular descriptor
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*/
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dev->control = (ALT_SGDMA_CONTROL_RUN_MSK |
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ALT_SGDMA_CONTROL_STOP_DMA_ER_MSK);
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/* we really should check if the transfer completes properly */
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return 0;
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}
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/* u-boot interface */
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static int tse_adjust_link(struct altera_tse_priv *priv)
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{
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unsigned int refvar;
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refvar = priv->mac_dev->command_config.image;
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if (!(priv->duplexity))
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refvar |= ALTERA_TSE_CMD_HD_ENA_MSK;
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else
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refvar &= ~ALTERA_TSE_CMD_HD_ENA_MSK;
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switch (priv->speed) {
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case 1000:
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refvar |= ALTERA_TSE_CMD_ETH_SPEED_MSK;
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refvar &= ~ALTERA_TSE_CMD_ENA_10_MSK;
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break;
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case 100:
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refvar &= ~ALTERA_TSE_CMD_ETH_SPEED_MSK;
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refvar &= ~ALTERA_TSE_CMD_ENA_10_MSK;
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break;
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case 10:
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refvar &= ~ALTERA_TSE_CMD_ETH_SPEED_MSK;
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refvar |= ALTERA_TSE_CMD_ENA_10_MSK;
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break;
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}
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priv->mac_dev->command_config.image = refvar;
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return 0;
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}
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static int tse_eth_send(struct eth_device *dev,
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volatile void *packet, int length)
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{
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struct altera_tse_priv *priv = dev->priv;
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volatile struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
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volatile struct alt_sgdma_descriptor *tx_desc =
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(volatile struct alt_sgdma_descriptor *)priv->tx_desc;
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volatile struct alt_sgdma_descriptor *tx_desc_cur =
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(volatile struct alt_sgdma_descriptor *)&tx_desc[0];
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flush_dcache((unsigned long)packet, length);
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alt_sgdma_construct_descriptor_burst(
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(volatile struct alt_sgdma_descriptor *)&tx_desc[0],
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(volatile struct alt_sgdma_descriptor *)&tx_desc[1],
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(unsigned int *)packet, /* read addr */
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(unsigned int *)0,
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length, /* length or EOP ,will change for each tx */
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0x1, /* gen eop */
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0x0, /* read fixed */
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0x1, /* write fixed or sop */
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0x0, /* read burst */
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0x0, /* write burst */
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0x0 /* channel */
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);
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debug("TX Packet @ 0x%x,0x%x bytes", (unsigned int)packet, length);
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/* send the packet */
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debug("sending packet\n");
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alt_sgdma_do_sync_transfer(tx_sgdma, tx_desc_cur);
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debug("sent %d bytes\n", tx_desc_cur->actual_bytes_transferred);
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return tx_desc_cur->actual_bytes_transferred;
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}
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static int tse_eth_rx(struct eth_device *dev)
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{
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int packet_length = 0;
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struct altera_tse_priv *priv = dev->priv;
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volatile struct alt_sgdma_descriptor *rx_desc =
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(volatile struct alt_sgdma_descriptor *)priv->rx_desc;
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volatile struct alt_sgdma_descriptor *rx_desc_cur = &rx_desc[0];
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if (rx_desc_cur->descriptor_status &
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ALT_SGDMA_DESCRIPTOR_STATUS_TERMINATED_BY_EOP_MSK) {
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debug("got packet\n");
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packet_length = rx_desc->actual_bytes_transferred;
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NetReceive(NetRxPackets[0], packet_length);
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/* start descriptor again */
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flush_dcache((unsigned long)(NetRxPackets[0]), PKTSIZE_ALIGN);
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alt_sgdma_construct_descriptor_burst(
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(volatile struct alt_sgdma_descriptor *)&rx_desc[0],
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(volatile struct alt_sgdma_descriptor *)&rx_desc[1],
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(unsigned int)0x0, /* read addr */
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(unsigned int *)NetRxPackets[0],
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0x0, /* length or EOP */
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0x0, /* gen eop */
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0x0, /* read fixed */
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0x0, /* write fixed or sop */
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0x0, /* read burst */
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0x0, /* write burst */
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0x0 /* channel */
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);
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/* setup the sgdma */
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alt_sgdma_do_async_transfer(priv->sgdma_rx, &rx_desc[0]);
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return packet_length;
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}
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return -1;
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}
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static void tse_eth_halt(struct eth_device *dev)
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{
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/* don't do anything! */
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/* this gets called after each uboot */
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/* network command. don't need to reset the thing all of the time */
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}
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static void tse_eth_reset(struct eth_device *dev)
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{
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/* stop sgdmas, disable tse receive */
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struct altera_tse_priv *priv = dev->priv;
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volatile struct alt_tse_mac *mac_dev = priv->mac_dev;
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volatile struct alt_sgdma_registers *rx_sgdma = priv->sgdma_rx;
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volatile struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
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int counter;
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volatile struct alt_sgdma_descriptor *rx_desc =
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(volatile struct alt_sgdma_descriptor *)&priv->rx_desc[0];
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/* clear rx desc & wait for sgdma to complete */
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rx_desc->descriptor_control = 0;
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rx_sgdma->control = 0;
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counter = 0;
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while (rx_sgdma->status & ALT_SGDMA_STATUS_BUSY_MSK) {
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if (counter++ > ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
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break;
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}
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if (counter >= ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR) {
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debug("Timeout waiting for rx sgdma!\n");
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rx_sgdma->control = ALT_SGDMA_CONTROL_SOFTWARERESET_MSK;
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rx_sgdma->control = ALT_SGDMA_CONTROL_SOFTWARERESET_MSK;
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}
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counter = 0;
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tx_sgdma->control = 0;
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while (tx_sgdma->status & ALT_SGDMA_STATUS_BUSY_MSK) {
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if (counter++ > ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR)
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break;
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}
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if (counter >= ALT_TSE_SGDMA_BUSY_WATCHDOG_CNTR) {
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debug("Timeout waiting for tx sgdma!\n");
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tx_sgdma->control = ALT_SGDMA_CONTROL_SOFTWARERESET_MSK;
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tx_sgdma->control = ALT_SGDMA_CONTROL_SOFTWARERESET_MSK;
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}
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/* reset the mac */
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mac_dev->command_config.bits.transmit_enable = 1;
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mac_dev->command_config.bits.receive_enable = 1;
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mac_dev->command_config.bits.software_reset = 1;
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counter = 0;
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while (mac_dev->command_config.bits.software_reset) {
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if (counter++ > ALT_TSE_SW_RESET_WATCHDOG_CNTR)
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break;
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}
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if (counter >= ALT_TSE_SW_RESET_WATCHDOG_CNTR)
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debug("TSEMAC SW reset bit never cleared!\n");
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}
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static int tse_mdio_read(struct altera_tse_priv *priv, unsigned int regnum)
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{
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volatile struct alt_tse_mac *mac_dev;
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unsigned int *mdio_regs;
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unsigned int data;
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u16 value;
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mac_dev = priv->mac_dev;
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/* set mdio address */
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mac_dev->mdio_phy1_addr = priv->phyaddr;
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mdio_regs = (unsigned int *)&mac_dev->mdio_phy1;
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/* get the data */
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data = mdio_regs[regnum];
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value = data & 0xffff;
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return value;
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}
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static int tse_mdio_write(struct altera_tse_priv *priv, unsigned int regnum,
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unsigned int value)
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{
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volatile struct alt_tse_mac *mac_dev;
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unsigned int *mdio_regs;
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unsigned int data;
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mac_dev = priv->mac_dev;
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/* set mdio address */
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mac_dev->mdio_phy1_addr = priv->phyaddr;
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mdio_regs = (unsigned int *)&mac_dev->mdio_phy1;
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/* get the data */
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data = (unsigned int)value;
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mdio_regs[regnum] = data;
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return 0;
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}
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/* MDIO access to phy */
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#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) && !defined(BITBANGMII)
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static int altera_tse_miiphy_write(const char *devname, unsigned char addr,
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unsigned char reg, unsigned short value)
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{
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struct eth_device *dev;
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struct altera_tse_priv *priv;
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dev = eth_get_dev_by_name(devname);
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priv = dev->priv;
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tse_mdio_write(priv, (uint) reg, (uint) value);
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return 0;
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}
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static int altera_tse_miiphy_read(const char *devname, unsigned char addr,
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unsigned char reg, unsigned short *value)
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{
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struct eth_device *dev;
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struct altera_tse_priv *priv;
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volatile struct alt_tse_mac *mac_dev;
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unsigned int *mdio_regs;
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dev = eth_get_dev_by_name(devname);
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priv = dev->priv;
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mac_dev = priv->mac_dev;
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mac_dev->mdio_phy1_addr = (int)addr;
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mdio_regs = (unsigned int *)&mac_dev->mdio_phy1;
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*value = 0xffff & mdio_regs[reg];
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return 0;
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}
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#endif
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/*
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* Also copied from tsec.c
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*/
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/* Parse the status register for link, and then do
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* auto-negotiation
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*/
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static uint mii_parse_sr(uint mii_reg, struct altera_tse_priv *priv)
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{
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/*
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* Wait if the link is up, and autonegotiation is in progress
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* (ie - we're capable and it's not done)
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*/
|
|
mii_reg = tse_mdio_read(priv, MIIM_STATUS);
|
|
|
|
if (!(mii_reg & MIIM_STATUS_LINK) && (mii_reg & BMSR_ANEGCAPABLE)
|
|
&& !(mii_reg & BMSR_ANEGCOMPLETE)) {
|
|
int i = 0;
|
|
|
|
puts("Waiting for PHY auto negotiation to complete");
|
|
while (!(mii_reg & BMSR_ANEGCOMPLETE)) {
|
|
/*
|
|
* Timeout reached ?
|
|
*/
|
|
if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
|
|
puts(" TIMEOUT !\n");
|
|
priv->link = 0;
|
|
return 0;
|
|
}
|
|
|
|
if ((i++ % 1000) == 0)
|
|
putc('.');
|
|
udelay(1000); /* 1 ms */
|
|
mii_reg = tse_mdio_read(priv, MIIM_STATUS);
|
|
}
|
|
puts(" done\n");
|
|
priv->link = 1;
|
|
udelay(500000); /* another 500 ms (results in faster booting) */
|
|
} else {
|
|
if (mii_reg & MIIM_STATUS_LINK) {
|
|
debug("Link is up\n");
|
|
priv->link = 1;
|
|
} else {
|
|
debug("Link is down\n");
|
|
priv->link = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Parse the 88E1011's status register for speed and duplex
|
|
* information
|
|
*/
|
|
static uint mii_parse_88E1011_psr(uint mii_reg, struct altera_tse_priv *priv)
|
|
{
|
|
uint speed;
|
|
|
|
mii_reg = tse_mdio_read(priv, MIIM_88E1011_PHY_STATUS);
|
|
|
|
if ((mii_reg & MIIM_88E1011_PHYSTAT_LINK) &&
|
|
!(mii_reg & MIIM_88E1011_PHYSTAT_SPDDONE)) {
|
|
int i = 0;
|
|
|
|
puts("Waiting for PHY realtime link");
|
|
while (!(mii_reg & MIIM_88E1011_PHYSTAT_SPDDONE)) {
|
|
/* Timeout reached ? */
|
|
if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
|
|
puts(" TIMEOUT !\n");
|
|
priv->link = 0;
|
|
break;
|
|
}
|
|
|
|
if ((i++ == 1000) == 0) {
|
|
i = 0;
|
|
puts(".");
|
|
}
|
|
udelay(1000); /* 1 ms */
|
|
mii_reg = tse_mdio_read(priv, MIIM_88E1011_PHY_STATUS);
|
|
}
|
|
puts(" done\n");
|
|
udelay(500000); /* another 500 ms (results in faster booting) */
|
|
} else {
|
|
if (mii_reg & MIIM_88E1011_PHYSTAT_LINK)
|
|
priv->link = 1;
|
|
else
|
|
priv->link = 0;
|
|
}
|
|
|
|
if (mii_reg & MIIM_88E1011_PHYSTAT_DUPLEX)
|
|
priv->duplexity = 1;
|
|
else
|
|
priv->duplexity = 0;
|
|
|
|
speed = (mii_reg & MIIM_88E1011_PHYSTAT_SPEED);
|
|
|
|
switch (speed) {
|
|
case MIIM_88E1011_PHYSTAT_GBIT:
|
|
priv->speed = 1000;
|
|
debug("PHY Speed is 1000Mbit\n");
|
|
break;
|
|
case MIIM_88E1011_PHYSTAT_100:
|
|
debug("PHY Speed is 100Mbit\n");
|
|
priv->speed = 100;
|
|
break;
|
|
default:
|
|
debug("PHY Speed is 10Mbit\n");
|
|
priv->speed = 10;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static uint mii_m88e1111s_setmode_sr(uint mii_reg, struct altera_tse_priv *priv)
|
|
{
|
|
uint mii_data = tse_mdio_read(priv, mii_reg);
|
|
mii_data &= 0xfff0;
|
|
if ((priv->flags >= 1) && (priv->flags <= 4))
|
|
mii_data |= 0xb;
|
|
else if (priv->flags == 5)
|
|
mii_data |= 0x4;
|
|
|
|
return mii_data;
|
|
}
|
|
|
|
static uint mii_m88e1111s_setmode_cr(uint mii_reg, struct altera_tse_priv *priv)
|
|
{
|
|
uint mii_data = tse_mdio_read(priv, mii_reg);
|
|
mii_data &= ~0x82;
|
|
if ((priv->flags >= 1) && (priv->flags <= 4))
|
|
mii_data |= 0x82;
|
|
|
|
return mii_data;
|
|
}
|
|
|
|
/*
|
|
* Returns which value to write to the control register.
|
|
* For 10/100, the value is slightly different
|
|
*/
|
|
static uint mii_cr_init(uint mii_reg, struct altera_tse_priv *priv)
|
|
{
|
|
return MIIM_CONTROL_INIT;
|
|
}
|
|
|
|
/*
|
|
* PHY & MDIO code
|
|
* Need to add SGMII stuff
|
|
*
|
|
*/
|
|
|
|
static struct phy_info phy_info_M88E1111S = {
|
|
0x01410cc,
|
|
"Marvell 88E1111S",
|
|
4,
|
|
(struct phy_cmd[]){ /* config */
|
|
/* Reset and configure the PHY */
|
|
{MIIM_CONTROL, MIIM_CONTROL_RESET, NULL},
|
|
{MIIM_88E1111_PHY_EXT_SR, 0x848f,
|
|
&mii_m88e1111s_setmode_sr},
|
|
/* Delay RGMII TX and RX */
|
|
{MIIM_88E1111_PHY_EXT_CR, 0x0cd2,
|
|
&mii_m88e1111s_setmode_cr},
|
|
{MIIM_GBIT_CONTROL, MIIM_GBIT_CONTROL_INIT, NULL},
|
|
{MIIM_ANAR, MIIM_ANAR_INIT, NULL},
|
|
{MIIM_CONTROL, MIIM_CONTROL_RESET, NULL},
|
|
{MIIM_CONTROL, MIIM_CONTROL_INIT, &mii_cr_init},
|
|
{miim_end,}
|
|
},
|
|
(struct phy_cmd[]){ /* startup */
|
|
/* Status is read once to clear old link state */
|
|
{MIIM_STATUS, miim_read, NULL},
|
|
/* Auto-negotiate */
|
|
{MIIM_STATUS, miim_read, &mii_parse_sr},
|
|
/* Read the status */
|
|
{MIIM_88E1011_PHY_STATUS, miim_read,
|
|
&mii_parse_88E1011_psr},
|
|
{miim_end,}
|
|
},
|
|
(struct phy_cmd[]){ /* shutdown */
|
|
{miim_end,}
|
|
},
|
|
};
|
|
|
|
/* a generic flavor. */
|
|
static struct phy_info phy_info_generic = {
|
|
0,
|
|
"Unknown/Generic PHY",
|
|
32,
|
|
(struct phy_cmd[]){ /* config */
|
|
{MII_BMCR, BMCR_RESET, NULL},
|
|
{MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART, NULL},
|
|
{miim_end,}
|
|
},
|
|
(struct phy_cmd[]){ /* startup */
|
|
{MII_BMSR, miim_read, NULL},
|
|
{MII_BMSR, miim_read, &mii_parse_sr},
|
|
{miim_end,}
|
|
},
|
|
(struct phy_cmd[]){ /* shutdown */
|
|
{miim_end,}
|
|
}
|
|
};
|
|
|
|
static struct phy_info *phy_info[] = {
|
|
&phy_info_M88E1111S,
|
|
NULL
|
|
};
|
|
|
|
/* Grab the identifier of the device's PHY, and search through
|
|
* all of the known PHYs to see if one matches. If so, return
|
|
* it, if not, return NULL
|
|
*/
|
|
static struct phy_info *get_phy_info(struct eth_device *dev)
|
|
{
|
|
struct altera_tse_priv *priv = (struct altera_tse_priv *)dev->priv;
|
|
uint phy_reg, phy_ID;
|
|
int i;
|
|
struct phy_info *theInfo = NULL;
|
|
|
|
/* Grab the bits from PHYIR1, and put them in the upper half */
|
|
phy_reg = tse_mdio_read(priv, MIIM_PHYIR1);
|
|
phy_ID = (phy_reg & 0xffff) << 16;
|
|
|
|
/* Grab the bits from PHYIR2, and put them in the lower half */
|
|
phy_reg = tse_mdio_read(priv, MIIM_PHYIR2);
|
|
phy_ID |= (phy_reg & 0xffff);
|
|
|
|
/* loop through all the known PHY types, and find one that */
|
|
/* matches the ID we read from the PHY. */
|
|
for (i = 0; phy_info[i]; i++) {
|
|
if (phy_info[i]->id == (phy_ID >> phy_info[i]->shift)) {
|
|
theInfo = phy_info[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (theInfo == NULL) {
|
|
theInfo = &phy_info_generic;
|
|
debug("%s: No support for PHY id %x; assuming generic\n",
|
|
dev->name, phy_ID);
|
|
} else
|
|
debug("%s: PHY is %s (%x)\n", dev->name, theInfo->name, phy_ID);
|
|
|
|
return theInfo;
|
|
}
|
|
|
|
/* Execute the given series of commands on the given device's
|
|
* PHY, running functions as necessary
|
|
*/
|
|
static void phy_run_commands(struct altera_tse_priv *priv, struct phy_cmd *cmd)
|
|
{
|
|
int i;
|
|
uint result;
|
|
|
|
for (i = 0; cmd->mii_reg != miim_end; i++) {
|
|
if (cmd->mii_data == miim_read) {
|
|
result = tse_mdio_read(priv, cmd->mii_reg);
|
|
|
|
if (cmd->funct != NULL)
|
|
(*(cmd->funct)) (result, priv);
|
|
|
|
} else {
|
|
if (cmd->funct != NULL)
|
|
result = (*(cmd->funct)) (cmd->mii_reg, priv);
|
|
else
|
|
result = cmd->mii_data;
|
|
|
|
tse_mdio_write(priv, cmd->mii_reg, result);
|
|
|
|
}
|
|
cmd++;
|
|
}
|
|
}
|
|
|
|
/* Phy init code */
|
|
static int init_phy(struct eth_device *dev)
|
|
{
|
|
struct altera_tse_priv *priv = (struct altera_tse_priv *)dev->priv;
|
|
struct phy_info *curphy;
|
|
|
|
/* Get the cmd structure corresponding to the attached
|
|
* PHY */
|
|
curphy = get_phy_info(dev);
|
|
|
|
if (curphy == NULL) {
|
|
priv->phyinfo = NULL;
|
|
debug("%s: No PHY found\n", dev->name);
|
|
|
|
return 0;
|
|
} else
|
|
debug("%s found\n", curphy->name);
|
|
priv->phyinfo = curphy;
|
|
|
|
phy_run_commands(priv, priv->phyinfo->config);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int tse_set_mac_address(struct eth_device *dev)
|
|
{
|
|
struct altera_tse_priv *priv = dev->priv;
|
|
volatile struct alt_tse_mac *mac_dev = priv->mac_dev;
|
|
|
|
debug("Setting MAC address to 0x%02x%02x%02x%02x%02x%02x\n",
|
|
dev->enetaddr[5], dev->enetaddr[4],
|
|
dev->enetaddr[3], dev->enetaddr[2],
|
|
dev->enetaddr[1], dev->enetaddr[0]);
|
|
mac_dev->mac_addr_0 = ((dev->enetaddr[3]) << 24 |
|
|
(dev->enetaddr[2]) << 16 |
|
|
(dev->enetaddr[1]) << 8 | (dev->enetaddr[0]));
|
|
|
|
mac_dev->mac_addr_1 = ((dev->enetaddr[5] << 8 |
|
|
(dev->enetaddr[4])) & 0xFFFF);
|
|
|
|
/* Set the MAC address */
|
|
mac_dev->supp_mac_addr_0_0 = mac_dev->mac_addr_0;
|
|
mac_dev->supp_mac_addr_0_1 = mac_dev->mac_addr_1;
|
|
|
|
/* Set the MAC address */
|
|
mac_dev->supp_mac_addr_1_0 = mac_dev->mac_addr_0;
|
|
mac_dev->supp_mac_addr_1_1 = mac_dev->mac_addr_1;
|
|
|
|
/* Set the MAC address */
|
|
mac_dev->supp_mac_addr_2_0 = mac_dev->mac_addr_0;
|
|
mac_dev->supp_mac_addr_2_1 = mac_dev->mac_addr_1;
|
|
|
|
/* Set the MAC address */
|
|
mac_dev->supp_mac_addr_3_0 = mac_dev->mac_addr_0;
|
|
mac_dev->supp_mac_addr_3_1 = mac_dev->mac_addr_1;
|
|
return 0;
|
|
}
|
|
|
|
static int tse_eth_init(struct eth_device *dev, bd_t * bd)
|
|
{
|
|
int dat;
|
|
struct altera_tse_priv *priv = dev->priv;
|
|
volatile struct alt_tse_mac *mac_dev = priv->mac_dev;
|
|
volatile struct alt_sgdma_descriptor *tx_desc = priv->tx_desc;
|
|
volatile struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
|
|
volatile struct alt_sgdma_descriptor *rx_desc_cur =
|
|
(volatile struct alt_sgdma_descriptor *)&rx_desc[0];
|
|
|
|
/* stop controller */
|
|
debug("Reseting TSE & SGDMAs\n");
|
|
tse_eth_reset(dev);
|
|
|
|
/* start the phy */
|
|
debug("Configuring PHY\n");
|
|
phy_run_commands(priv, priv->phyinfo->startup);
|
|
|
|
/* need to create sgdma */
|
|
debug("Configuring tx desc\n");
|
|
alt_sgdma_construct_descriptor_burst(
|
|
(volatile struct alt_sgdma_descriptor *)&tx_desc[0],
|
|
(volatile struct alt_sgdma_descriptor *)&tx_desc[1],
|
|
(unsigned int *)NULL, /* read addr */
|
|
(unsigned int *)0,
|
|
0, /* length or EOP ,will change for each tx */
|
|
0x1, /* gen eop */
|
|
0x0, /* read fixed */
|
|
0x1, /* write fixed or sop */
|
|
0x0, /* read burst */
|
|
0x0, /* write burst */
|
|
0x0 /* channel */
|
|
);
|
|
debug("Configuring rx desc\n");
|
|
flush_dcache((unsigned long)(NetRxPackets[0]), PKTSIZE_ALIGN);
|
|
alt_sgdma_construct_descriptor_burst(
|
|
(volatile struct alt_sgdma_descriptor *)&rx_desc[0],
|
|
(volatile struct alt_sgdma_descriptor *)&rx_desc[1],
|
|
(unsigned int)0x0, /* read addr */
|
|
(unsigned int *)NetRxPackets[0],
|
|
0x0, /* length or EOP */
|
|
0x0, /* gen eop */
|
|
0x0, /* read fixed */
|
|
0x0, /* write fixed or sop */
|
|
0x0, /* read burst */
|
|
0x0, /* write burst */
|
|
0x0 /* channel */
|
|
);
|
|
/* start rx async transfer */
|
|
debug("Starting rx sgdma\n");
|
|
alt_sgdma_do_async_transfer(priv->sgdma_rx, rx_desc_cur);
|
|
|
|
/* start TSE */
|
|
debug("Configuring TSE Mac\n");
|
|
/* Initialize MAC registers */
|
|
mac_dev->max_frame_length = PKTSIZE_ALIGN;
|
|
mac_dev->rx_almost_empty_threshold = 8;
|
|
mac_dev->rx_almost_full_threshold = 8;
|
|
mac_dev->tx_almost_empty_threshold = 8;
|
|
mac_dev->tx_almost_full_threshold = 3;
|
|
mac_dev->tx_sel_empty_threshold =
|
|
CONFIG_SYS_ALTERA_TSE_TX_FIFO - 16;
|
|
mac_dev->tx_sel_full_threshold = 0;
|
|
mac_dev->rx_sel_empty_threshold =
|
|
CONFIG_SYS_ALTERA_TSE_TX_FIFO - 16;
|
|
mac_dev->rx_sel_full_threshold = 0;
|
|
|
|
/* NO Shift */
|
|
mac_dev->rx_cmd_stat.bits.rx_shift16 = 0;
|
|
mac_dev->tx_cmd_stat.bits.tx_shift16 = 0;
|
|
|
|
/* enable MAC */
|
|
dat = 0;
|
|
dat = ALTERA_TSE_CMD_TX_ENA_MSK | ALTERA_TSE_CMD_RX_ENA_MSK;
|
|
|
|
mac_dev->command_config.image = dat;
|
|
|
|
/* configure the TSE core */
|
|
/* -- output clocks, */
|
|
/* -- and later config stuff for SGMII */
|
|
if (priv->link) {
|
|
debug("Adjusting TSE to link speed\n");
|
|
tse_adjust_link(priv);
|
|
}
|
|
|
|
return priv->link ? 0 : -1;
|
|
}
|
|
|
|
/* TSE init code */
|
|
int altera_tse_initialize(u8 dev_num, int mac_base,
|
|
int sgdma_rx_base, int sgdma_tx_base,
|
|
u32 sgdma_desc_base, u32 sgdma_desc_size)
|
|
{
|
|
struct altera_tse_priv *priv;
|
|
struct eth_device *dev;
|
|
struct alt_sgdma_descriptor *rx_desc;
|
|
struct alt_sgdma_descriptor *tx_desc;
|
|
unsigned long dma_handle;
|
|
|
|
dev = (struct eth_device *)malloc(sizeof *dev);
|
|
|
|
if (NULL == dev)
|
|
return 0;
|
|
|
|
memset(dev, 0, sizeof *dev);
|
|
|
|
priv = malloc(sizeof(*priv));
|
|
|
|
if (!priv) {
|
|
free(dev);
|
|
return 0;
|
|
}
|
|
if (sgdma_desc_size) {
|
|
if (sgdma_desc_size < (sizeof(*tx_desc) * (3 + PKTBUFSRX))) {
|
|
printf("ALTERA_TSE-%hu: "
|
|
"descriptor memory is too small\n", dev_num);
|
|
free(priv);
|
|
free(dev);
|
|
return 0;
|
|
}
|
|
tx_desc = (struct alt_sgdma_descriptor *)sgdma_desc_base;
|
|
} else {
|
|
tx_desc = dma_alloc_coherent(sizeof(*tx_desc) * (3 + PKTBUFSRX),
|
|
&dma_handle);
|
|
}
|
|
|
|
rx_desc = tx_desc + 2;
|
|
debug("tx desc: address = 0x%x\n", (unsigned int)tx_desc);
|
|
debug("rx desc: address = 0x%x\n", (unsigned int)rx_desc);
|
|
|
|
if (!tx_desc) {
|
|
free(priv);
|
|
free(dev);
|
|
return 0;
|
|
}
|
|
memset(rx_desc, 0, (sizeof *rx_desc) * (PKTBUFSRX + 1));
|
|
memset(tx_desc, 0, (sizeof *tx_desc) * 2);
|
|
|
|
/* initialize tse priv */
|
|
priv->mac_dev = (volatile struct alt_tse_mac *)mac_base;
|
|
priv->sgdma_rx = (volatile struct alt_sgdma_registers *)sgdma_rx_base;
|
|
priv->sgdma_tx = (volatile struct alt_sgdma_registers *)sgdma_tx_base;
|
|
priv->phyaddr = CONFIG_SYS_ALTERA_TSE_PHY_ADDR;
|
|
priv->flags = CONFIG_SYS_ALTERA_TSE_FLAGS;
|
|
priv->rx_desc = rx_desc;
|
|
priv->tx_desc = tx_desc;
|
|
|
|
/* init eth structure */
|
|
dev->priv = priv;
|
|
dev->init = tse_eth_init;
|
|
dev->halt = tse_eth_halt;
|
|
dev->send = tse_eth_send;
|
|
dev->recv = tse_eth_rx;
|
|
dev->write_hwaddr = tse_set_mac_address;
|
|
sprintf(dev->name, "%s-%hu", "ALTERA_TSE", dev_num);
|
|
|
|
eth_register(dev);
|
|
|
|
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) && !defined(BITBANGMII)
|
|
miiphy_register(dev->name, altera_tse_miiphy_read,
|
|
altera_tse_miiphy_write);
|
|
#endif
|
|
|
|
init_phy(dev);
|
|
|
|
return 1;
|
|
}
|