/* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */ /* * Copyright 1996-1999 Thomas Bogendoerfer * * Derived from the lance driver written 1993,1994,1995 by Donald Becker. * * Copyright 1993 United States Government as represented by the * Director, National Security Agency. * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * * This driver is for PCnet32 and PCnetPCI based ethercards */ /************************************************************************** * 23 Oct, 2000. * Fixed a few bugs, related to running the controller in 32bit mode. * * Carsten Langgaard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. * *************************************************************************/ #define DRV_NAME "pcnet32" #define DRV_VERSION "1.27a" #define DRV_RELDATE "10.02.2002" #define PFX DRV_NAME ": " static const char *version = DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n"; #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #undef TX_RING_SIZE #undef RX_RING_SIZE /* * PCI device identifiers for "new style" Linux PCI Device Drivers */ static struct pci_device_id pcnet32_pci_tbl[] __devinitdata = { { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { 0, } }; MODULE_DEVICE_TABLE (pci, pcnet32_pci_tbl); int cards_found __initdata; /* * VLB I/O addresses */ static unsigned int pcnet32_portlist[] __initdata = { 0x300, 0x320, 0x340, 0x360, 0 }; static int pcnet32_debug = 1; static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */ static int pcnet32vlb; /* check for VLB cards ? */ static struct net_device *pcnet32_dev; static int max_interrupt_work = 80; #ifdef COPYBREAK static int rx_copybreak = 200; #endif #define PCNET32_PORT_AUI 0x00 #define PCNET32_PORT_10BT 0x01 #define PCNET32_PORT_GPSI 0x02 #define PCNET32_PORT_MII 0x03 #define PCNET32_PORT_PORTSEL 0x03 #define PCNET32_PORT_ASEL 0x04 #define PCNET32_PORT_100 0x40 #define PCNET32_PORT_FD 0x80 #define PCNET32_DMA_MASK 0xffffffff /* * table to translate option values from tulip * to internal options */ static unsigned char options_mapping[] = { PCNET32_PORT_ASEL, /* 0 Auto-select */ PCNET32_PORT_AUI, /* 1 BNC/AUI */ PCNET32_PORT_AUI, /* 2 AUI/BNC */ PCNET32_PORT_ASEL, /* 3 not supported */ PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */ PCNET32_PORT_ASEL, /* 5 not supported */ PCNET32_PORT_ASEL, /* 6 not supported */ PCNET32_PORT_ASEL, /* 7 not supported */ PCNET32_PORT_ASEL, /* 8 not supported */ PCNET32_PORT_MII, /* 9 MII 10baseT */ PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */ PCNET32_PORT_MII, /* 11 MII (autosel) */ PCNET32_PORT_10BT, /* 12 10BaseT */ PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */ PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD, /* 14 MII 100BaseTx-FD */ PCNET32_PORT_ASEL /* 15 not supported */ }; #define MAX_UNITS 8 /* More are supported, limit only on options */ static int options[MAX_UNITS]; static int full_duplex[MAX_UNITS]; /* * Theory of Operation * * This driver uses the same software structure as the normal lance * driver. So look for a verbose description in lance.c. The differences * to the normal lance driver is the use of the 32bit mode of PCnet32 * and PCnetPCI chips. Because these chips are 32bit chips, there is no * 16MB limitation and we don't need bounce buffers. */ /* * History: * v0.01: Initial version * only tested on Alpha Noname Board * v0.02: changed IRQ handling for new interrupt scheme (dev_id) * tested on a ASUS SP3G * v0.10: fixed an odd problem with the 79C974 in a Compaq Deskpro XL * looks like the 974 doesn't like stopping and restarting in a * short period of time; now we do a reinit of the lance; the * bug was triggered by doing ifconfig eth0 broadcast * and hangs the machine (thanks to Klaus Liedl for debugging) * v0.12: by suggestion from Donald Becker: Renamed driver to pcnet32, * made it standalone (no need for lance.c) * v0.13: added additional PCI detecting for special PCI devices (Compaq) * v0.14: stripped down additional PCI probe (thanks to David C Niemi * and sveneric@xs4all.nl for testing this on their Compaq boxes) * v0.15: added 79C965 (VLB) probe * added interrupt sharing for PCI chips * v0.16: fixed set_multicast_list on Alpha machines * v0.17: removed hack from dev.c; now pcnet32 uses ethif_probe in Space.c * v0.19: changed setting of autoselect bit * v0.20: removed additional Compaq PCI probe; there is now a working one * in arch/i386/bios32.c * v0.21: added endian conversion for ppc, from work by cort@cs.nmt.edu * v0.22: added printing of status to ring dump * v0.23: changed enet_statistics to net_devive_stats * v0.90: added multicast filter * added module support * changed irq probe to new style * added PCnetFast chip id * added fix for receive stalls with Intel saturn chipsets * added in-place rx skbs like in the tulip driver * minor cleanups * v0.91: added PCnetFast+ chip id * back port to 2.0.x * v1.00: added some stuff from Donald Becker's 2.0.34 version * added support for byte counters in net_dev_stats * v1.01: do ring dumps, only when debugging the driver * increased the transmit timeout * v1.02: fixed memory leak in pcnet32_init_ring() * v1.10: workaround for stopped transmitter * added port selection for modules * detect special T1/E1 WAN card and setup port selection * v1.11: fixed wrong checking of Tx errors * v1.20: added check of return value kmalloc (cpeterso@cs.washington.edu) * added save original kmalloc addr for freeing (mcr@solidum.com) * added support for PCnetHome chip (joe@MIT.EDU) * rewritten PCI card detection * added dwio mode to get driver working on some PPC machines * v1.21: added mii selection and mii ioctl * v1.22: changed pci scanning code to make PPC people happy * fixed switching to 32bit mode in pcnet32_open() (thanks * to Michael Richard for noticing this one) * added sub vendor/device id matching (thanks again to * Michael Richard ) * added chip id for 79c973/975 (thanks to Zach Brown ) * v1.23 fixed small bug, when manual selecting MII speed/duplex * v1.24 Applied Thomas' patch to use TxStartPoint and thus decrease TxFIFO * underflows. Added tx_start_pt module parameter. Increased * TX_RING_SIZE from 16 to 32. Added #ifdef'd code to use DXSUFLO * for FAST[+] chipsets. * v1.24ac Added SMP spinlocking - Alan Cox * v1.25kf Added No Interrupt on successful Tx for some Tx's * v1.26 Converted to pci_alloc_consistent, Jamey Hicks / George France * * - Fixed a few bugs, related to running the controller in 32bit mode. * 23 Oct, 2000. Carsten Langgaard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. * v1.26p Fix oops on rmmod+insmod; plug i/o resource leak - Paul Gortmaker * v1.27 improved CSR/PROM address detection, lots of cleanups, * new pcnet32vlb module option, HP-PARISC support, * added module parameter descriptions, * initial ethtool support - Helge Deller * v1.27a Sun Feb 10 2002 Go Taniguchi * use alloc_etherdev and register_netdev * fix pci probe not increment cards_found * FD auto negotiate error workaround for xSeries250 * clean up and using new mii module */ /* * Set the number of Tx and Rx buffers, using Log_2(# buffers). * Reasonable default values are 4 Tx buffers, and 16 Rx buffers. * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4). */ #ifndef PCNET32_LOG_TX_BUFFERS #define PCNET32_LOG_TX_BUFFERS 4 #define PCNET32_LOG_RX_BUFFERS 5 #endif #define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS)) #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) #define TX_RING_LEN_BITS ((PCNET32_LOG_TX_BUFFERS) << 12) #define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS)) #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) #define RX_RING_LEN_BITS ((PCNET32_LOG_RX_BUFFERS) << 4) #define PKT_BUF_SZ 1544 /* Offsets from base I/O address. */ #define PCNET32_WIO_RDP 0x10 #define PCNET32_WIO_RAP 0x12 #define PCNET32_WIO_RESET 0x14 #define PCNET32_WIO_BDP 0x16 #define PCNET32_DWIO_RDP 0x10 #define PCNET32_DWIO_RAP 0x14 #define PCNET32_DWIO_RESET 0x18 #define PCNET32_DWIO_BDP 0x1C #define PCNET32_TOTAL_SIZE 0x20 /* The PCNET32 Rx and Tx ring descriptors. */ struct pcnet32_rx_head { u32 base; s16 buf_length; s16 status; u32 msg_length; u32 reserved; }; struct pcnet32_tx_head { u32 base; s16 length; s16 status; u32 misc; u32 reserved; }; /* The PCNET32 32-Bit initialization block, described in databook. */ struct pcnet32_init_block { u16 mode; u16 tlen_rlen; u8 phys_addr[6]; u16 reserved; u32 filter[2]; /* Receive and transmit ring base, along with extra bits. */ u32 rx_ring; u32 tx_ring; }; /* PCnet32 access functions */ struct pcnet32_access { u16 (*read_csr)(unsigned long, int); void (*write_csr)(unsigned long, int, u16); u16 (*read_bcr)(unsigned long, int); void (*write_bcr)(unsigned long, int, u16); u16 (*read_rap)(unsigned long); void (*write_rap)(unsigned long, u16); void (*reset)(unsigned long); }; /* * The first three fields of pcnet32_private are read by the ethernet device * so we allocate the structure should be allocated by pci_alloc_consistent(). */ struct pcnet32_private { /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */ struct pcnet32_rx_head rx_ring[RX_RING_SIZE]; struct pcnet32_tx_head tx_ring[TX_RING_SIZE]; struct pcnet32_init_block init_block; dma_addr_t dma_addr; /* DMA address of beginning of this object, returned by pci_alloc_consistent */ struct pci_dev *pci_dev; /* Pointer to the associated pci device structure */ const char *name; /* The saved address of a sent-in-place packet/buffer, for skfree(). */ struct sk_buff *tx_skbuff[TX_RING_SIZE]; struct sk_buff *rx_skbuff[RX_RING_SIZE]; dma_addr_t tx_dma_addr[TX_RING_SIZE]; dma_addr_t rx_dma_addr[RX_RING_SIZE]; struct pcnet32_access a; spinlock_t lock; /* Guard lock */ unsigned int cur_rx, cur_tx; /* The next free ring entry */ unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ struct net_device_stats stats; char tx_full; int options; int shared_irq:1, /* shared irq possible */ ltint:1, /* enable TxDone-intr inhibitor */ dxsuflo:1, /* disable transmit stop on uflo */ mii:1; /* mii port available */ struct net_device *next; struct mii_if_info mii_if; }; static void pcnet32_probe_vlbus(void); static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *); static int pcnet32_probe1(unsigned long, unsigned int, int, struct pci_dev *); static int pcnet3
/*
             LUFA Library
     Copyright (C) Dean Camera, 2017.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  Main source file for the MIDI demo. This file contains the main tasks of
 *  the demo and is responsible for the initial application hardware configuration.
 */

#include "MIDIToneGenerator.h"

/** LUFA MIDI Class driver interface configuration and state information. This structure is
 *  passed to all MIDI Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
USB_ClassInfo_MIDI_Device_t Keyboard_MIDI_Interface =
	{
		.Config =
			{
				.StreamingInterfaceNumber = INTERFACE_ID_AudioStream,
				.DataINEndpoint           =
					{
						.Address          = MIDI_STREAM_IN_EPADDR,
						.Size             = MIDI_STREAM_EPSIZE,
						.Banks            = 1,
					},
				.DataOUTEndpoint           =
					{
						.Address          = MIDI_STREAM_OUT_EPADDR,
						.Size             = MIDI_STREAM_EPSIZE,
						.Banks            = 1,
					},
			},
	};

/** 8-bit 256 entry Sine Wave lookup table */
static const uint8_t SineTable[256] =
{
	128, 131, 134, 137, 140, 143, 146, 149, 152, 156, 159, 162, 165, 168, 171, 174,
	176, 179, 182, 185, 188, 191, 193, 196, 199, 201, 204, 206, 209, 211, 213, 216,
	218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 237, 239, 240, 242, 243, 245,
	246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 254, 255, 255, 255, 255, 255,
	255, 255, 255, 255, 255, 255, 254, 254, 253, 252, 252, 251, 250, 249, 248, 247,
	246, 245, 243, 242, 240, 239, 237, 236, 234, 232, 230, 228, 226, 224, 222, 220,
	218, 216, 213, 211, 209, 206, 204, 201, 199, 196, 193, 191, 188, 185, 182, 179,
	176, 174, 171, 168, 165, 162, 159, 156, 152, 149, 146, 143, 140, 137, 134, 131,
	128, 124, 121, 118, 115, 112, 109, 106, 103,  99,  96,  93,  90,  87,  84,  81,
	 79,  76,  73,  70,  67,  64,  62,  59,  56,  54,  51,  49,  46,  44,  42,  39,
	 37,  35,  33,  31,  29,  27,  25,  23,  21,  19,  18,  16,  15,  13,  12,  10,
	  9,   8,   7,   6,   5,   4,   3,   3,   2,   1,   1,   0,   0,   0,   0,   0,
	  0,   0,   0,   0,   0,   0,   1,   1,   2,   3,   3,   4,   5,   6,   7,   8,
	  9,  10,  12,  13,  15,  16,  18,  19,  21,  23,  25,  27,  29,  31,  33,  35,
	 37,  39,  42,  44,  46,  49,  51,  54,  56,  59,  62,  64,  67,  70,  73,  76,
	 79,  81,  84,  87,  90,  93,  96,  99, 103, 106, 109, 112, 115, 118, 121, 124,
};

/** Array of structures describing each note being generated */
static DDSNoteData NoteData[MAX_SIMULTANEOUS_NOTES];


/** Main program entry point. This routine contains the overall program flow, including initial
 *  setup of all components and the main program loop.
 */
int main(void)
{
	SetupHardware();

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	GlobalInterruptEnable();

	for (;;)
	{
		MIDI_EventPacket_t ReceivedMIDIEvent;
		if (MIDI_Device_ReceiveEventPacket(&Keyboard_MIDI_Interface, &ReceivedMIDIEvent))
		{
			if ((ReceivedMIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_ON)) && ((ReceivedMIDIEvent.Data1 & 0x0F) == 0))
			{
				DDSNoteData* LRUNoteStruct = &NoteData[0];

				/* Find a free entry in the note table to use for the note being turned on */
				for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
				{
					/* Check if the note is unused */
					if (!(NoteData[i].Pitch))
					{
						/* If a note is unused, it's age is essentially infinite - always prefer unused note entries */
						LRUNoteStruct = &NoteData[i];
						break;
					}
					else if (NoteData[i].LRUAge >= LRUNoteStruct->LRUAge)
					{
						/* If an older entry that the current entry has been found, prefer overwriting that one */
						LRUNoteStruct = &NoteData[i];
					}

					NoteData[i].LRUAge++;
				}

				/* Update the oldest note entry with the new note data and reset its age */
				LRUNoteStruct->Pitch          = ReceivedMIDIEvent.Data2;
				LRUNoteStruct->TableIncrement = (uint32_t)(BASE_INCREMENT * SCALE_FACTOR) +
						                         ((uint32_t)(BASE_INCREMENT * NOTE_OCTIVE_RATIO * SCALE_FACTOR) *
						                          (ReceivedMIDIEvent.Data2 - BASE_PITCH_INDEX));
				LRUNoteStruct->TablePosition  = 0;
				LRUNoteStruct->LRUAge         = 0;

				/* Turn on indicator LED to indicate note generation activity */
				LEDs_SetAllLEDs(LEDS_LED1);
			}
			else if ((ReceivedMIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_OFF)) && ((ReceivedMIDIEvent.Data1 & 0x0F) == 0))
			{
				bool FoundActiveNote = false;

				/* Find the note in the note table to turn off */
				for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
				{
					if (NoteData[i].Pitch == ReceivedMIDIEvent.Data2)
					  NoteData[i].Pitch = 0;
					else if (NoteData[i].Pitch)
					  FoundActiveNote   = true;
				}

				/* If all notes off, turn off the indicator LED */
				if (!(FoundActiveNote))
				  LEDs_SetAllLEDs(LEDS_NO_LEDS);
			}
		}

		MIDI_Device_USBTask(&Keyboard_MIDI_Interface);
		USB_USBTask();
	}
}

/** ISR to handle the reloading of the PWM timer with the next sample. */
ISR(TIMER0_COMPA_vect, ISR_BLOCK)
{
	uint16_t MixedSample = 0;

	/* Sum together all the active notes to form a single sample */
	for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
	{
		/* A non-zero pitch indicates the note is active */
		if (NoteData[i].Pitch)
		{
			/* Use the top 8 bits of the table position as the sample table index */
			uint8_t TableIndex = (NoteData[i].TablePosition >> 24);

			/* Add the new tone sample to the accumulator and increment the table position */
			MixedSample += SineTable[TableIndex];
			NoteData[i].TablePosition += NoteData[i].TableIncrement;
		}
	}

	/* Output clamped mixed sample value to the PWM */
	OCR3A = (MixedSample <= 0xFF) ? MixedSample : 0xFF;
}

/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
#if (ARCH == ARCH_AVR8)
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();

	/* Disable clock division */
	clock_prescale_set(clock_div_1);
#endif

	/* Hardware Initialization */
	LEDs_Init();
	USB_Init();

	/* Sample reload timer initialization */
	TIMSK0  = (1 << OCIE0A);
	OCR0A   = (VIRTUAL_SAMPLE_TABLE_SIZE / 8);
	TCCR0A  = (1 << WGM01);  // CTC mode
	TCCR0B  = (1 << CS01);   // Fcpu/8 speed

	/* Set speaker as output */
	DDRC |= (1 << 6);

	/* PWM speaker timer initialization */
	TCCR3A  = ((1 << WGM31) | (1 << COM3A1) | (1 << COM3A0)); // Set on match, clear on TOP
	TCCR3B  = ((1 << WGM32) | (1 << CS30));  // Fast 8-Bit PWM, Fcpu speed
}

/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);

	/* Set speaker as output */
	DDRC |= (1 << 6);
}

/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);

	/* Disable any notes currently being played */
	for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
	  NoteData[i].Pitch = 0;

	/* Set speaker as input to reduce current draw */
	DDRC &= ~(1 << 6);
}

/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
	bool ConfigSuccess = true;

	ConfigSuccess &= MIDI_Device_ConfigureEndpoints(&Keyboard_MIDI_Interface);

	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}

/** Event handler for the library USB Control Request event. */
void EVENT_USB_Device_ControlRequest(void)
{
	MIDI_Device_ProcessControlRequest(&Keyboard_MIDI_Interface);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-18 13:58:40 +0000