diff options
author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-01-31 07:38:21 +0200 |
---|---|---|
committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-02-06 11:14:50 +0100 |
commit | 207379db12875b6b94956ef689f12789c805c2b8 (patch) | |
tree | a77cfe7ad8df12a2d9079612eb9a897b7d8a33ab /src/lib | |
parent | 5148642c56eaa66c1680963099e8460aea84dcae (diff) | |
download | coreboot-207379db12875b6b94956ef689f12789c805c2b8.tar.xz |
ne2k: Move under drivers/net
Change-Id: I978b6009c09c31be4429f57be40ef82f438f7574
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5135
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/lib')
-rw-r--r-- | src/lib/Makefile.inc | 3 | ||||
-rw-r--r-- | src/lib/ne2k.c | 458 | ||||
-rw-r--r-- | src/lib/ns8390.h | 110 |
3 files changed, 0 insertions, 571 deletions
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 3bad3fdb6b..79ceebf44b 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -47,7 +47,6 @@ romstage-$(CONFIG_COMPRESS_RAMSTAGE) += lzma.c romstage-$(CONFIG_CACHE_AS_RAM) += ramtest.c romstage-$(CONFIG_CONSOLE_SERIAL8250) += uart8250.c romstage-$(CONFIG_CONSOLE_SERIAL8250MEM) += uart8250mem.c -romstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c ifeq ($(CONFIG_EARLY_CBMEM_INIT),y) romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c @@ -113,8 +112,6 @@ ramstage-y += cbmem_info.c ramstage-y += hexdump.c romstage-y += hexdump.c -ramstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c - romstage-$(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM) += ramstage_cache.c ifneq ($(CONFIG_HAVE_ARCH_MEMSET),y) diff --git a/src/lib/ne2k.c b/src/lib/ne2k.c deleted file mode 100644 index b678d799c3..0000000000 --- a/src/lib/ne2k.c +++ /dev/null @@ -1,458 +0,0 @@ -/* -ETHERBOOT - BOOTP/TFTP Bootstrap Program - -Author: Martin Renters - Date: May/94 - - This code is based heavily on David Greenman's if_ed.c driver - - Copyright (C) 1993-1994, David Greenman, Martin Renters. - This software may be used, modified, copied, distributed, and sold, in - both source and binary form provided that the above copyright and these - terms are retained. Under no circumstances are the authors responsible for - the proper functioning of this software, nor do the authors assume any - responsibility for damages incurred with its use. - -Multicast support added by Timothy Legge (timlegge@users.sourceforge.net) 09/28/2003 -Relocation support added by Ken Yap (ken_yap@users.sourceforge.net) 28/12/02 -3c503 support added by Bill Paul (wpaul@ctr.columbia.edu) on 11/15/94 -SMC8416 support added by Bill Paul (wpaul@ctr.columbia.edu) on 12/25/94 -3c503 PIO support added by Jim Hague (jim.hague@acm.org) on 2/17/98 -RX overrun by Klaus Espenlaub (espenlaub@informatik.uni-ulm.de) on 3/10/99 - parts taken from the Linux 8390 driver (by Donald Becker and Paul Gortmaker) -SMC8416 PIO support added by Andrew Bettison (andrewb@zip.com.au) on 4/3/02 - based on the Linux 8390 driver (by Donald Becker and Paul Gortmaker) - -(C) Rudolf Marek <r.marek@assembler.cz> Simplify for RTL8029, Add coreboot glue logic - -*/ - -#define ETH_ALEN 6 /* Size of Ethernet address */ -#define ETH_HLEN 14 /* Size of ethernet header */ -#define ETH_ZLEN 60 /* Minimum packet */ -#define ETH_FRAME_LEN 1514 /* Maximum packet */ -#define ETH_DATA_ALIGN 2 /* Amount needed to align the data after an ethernet header */ -#define ETH_MAX_MTU (ETH_FRAME_LEN-ETH_HLEN) - -#include "ns8390.h" -#include <ip_checksum.h> -#include <console/ne2k.h> -#include <arch/io.h> - -#define MEM_SIZE MEM_32768 -#define TX_START 64 -#define RX_START (64 + D8390_TXBUF_SIZE) - -static unsigned int get_count(unsigned int eth_nic_base) -{ - unsigned int ret; - outb(D8390_COMMAND_RD2 + D8390_COMMAND_PS1, - eth_nic_base + D8390_P0_COMMAND); - - ret = inb(eth_nic_base + 8 + 0) | (inb(eth_nic_base + 8 + 1) << 8); - - outb(D8390_COMMAND_RD2 + D8390_COMMAND_PS0, - eth_nic_base + D8390_P0_COMMAND); - return ret; -} - -static void set_count(unsigned int eth_nic_base, unsigned int what) -{ - outb(D8390_COMMAND_RD2 + D8390_COMMAND_PS1, - eth_nic_base + D8390_P0_COMMAND); - - outb(what & 0xff,eth_nic_base + 8); - outb((what >> 8) & 0xff,eth_nic_base + 8 + 1); - - outb(D8390_COMMAND_RD2 + D8390_COMMAND_PS0, - eth_nic_base + D8390_P0_COMMAND); -} - -static void eth_pio_write(unsigned char *src, unsigned int dst, unsigned int cnt, - unsigned int eth_nic_base) -{ - outb(D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - outb(D8390_ISR_RDC, eth_nic_base + D8390_P0_ISR); - outb(cnt, eth_nic_base + D8390_P0_RBCR0); - outb(cnt >> 8, eth_nic_base + D8390_P0_RBCR1); - outb(dst, eth_nic_base + D8390_P0_RSAR0); - outb(dst >> 8, eth_nic_base + D8390_P0_RSAR1); - outb(D8390_COMMAND_RD1 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - - while (cnt--) { - outb(*(src++), eth_nic_base + NE_ASIC_OFFSET + NE_DATA); - } - /* - #warning "Add timeout" - */ - /* wait for operation finish */ - while ((inb(eth_nic_base + D8390_P0_ISR) & D8390_ISR_RDC) != D8390_ISR_RDC) - ; -} - -void ne2k_append_data(unsigned char *d, int len, unsigned int base) -{ - eth_pio_write(d, (TX_START << 8) + 42 + get_count(base), len, base); - set_count(base, get_count(base)+len); -} - -#ifdef __ROMCC__ - -void eth_pio_write_byte(int data, unsigned short dst, unsigned int eth_nic_base) -{ - outb(D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - outb(D8390_ISR_RDC, eth_nic_base + D8390_P0_ISR); - outb(1, eth_nic_base + D8390_P0_RBCR0); - outb(0, eth_nic_base + D8390_P0_RBCR1); - outb(dst, eth_nic_base + D8390_P0_RSAR0); - outb(dst >> 8, eth_nic_base + D8390_P0_RSAR1); - outb(D8390_COMMAND_RD1 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - outb(data, eth_nic_base + NE_ASIC_OFFSET + NE_DATA); - - while ((inb(eth_nic_base + D8390_P0_ISR) & D8390_ISR_RDC) != D8390_ISR_RDC) - ; -} - -void ne2k_append_data_byte(int d, unsigned int base) -{ - eth_pio_write_byte(d, (TX_START << 8) + 42 + get_count(base), base); - set_count(base, get_count(base)+1); -} - -static unsigned char eth_pio_read_byte(unsigned int src, - unsigned int eth_nic_base) -{ - outb(D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - outb(0, eth_nic_base + D8390_P0_RBCR0); - outb(1, eth_nic_base + D8390_P0_RBCR1); - outb(src, eth_nic_base + D8390_P0_RSAR0); - outb(src >> 8, eth_nic_base + D8390_P0_RSAR1); - outb(D8390_COMMAND_RD0 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - return inb(eth_nic_base + NE_ASIC_OFFSET + NE_DATA); -} - - -/* Variation of compute_ip_checksum which works on SRAM */ -unsigned long compute_ip_checksum_from_sram(unsigned short offset, unsigned short length, - unsigned int eth_nic_base) -{ - unsigned long sum; - unsigned long i; - /* In the most straight forward way possible, - * compute an ip style checksum. - */ - sum = 0; - for(i = 0; i < length; i++) { - unsigned long v; - v = eth_pio_read_byte((TX_START << 8)+i+offset, eth_nic_base); - if (i & 1) { - v <<= 8; - } - /* Add the new value */ - sum += v; - /* Wrap around the carry */ - if (sum > 0xFFFF) { - sum = (sum + (sum >> 16)) & 0xFFFF; - } - } - return (~((sum & 0xff) | (((sum >> 8) & 0xff) << 8) )) & 0xffff; -} - - -static void str2ip_load(const char *str, unsigned short offset, unsigned int eth_nic_base) -#else -static void str2ip(const char *str, unsigned char *ip) -#endif -{ - unsigned char c, i = 0; - int acc = 0; - - do { - c = str[i]; - if ((c >= '0') && (c <= '9')) { - acc *= 10; - acc += (c - '0'); - } else { -#ifdef __ROMCC__ - eth_pio_write_byte(acc, (TX_START << 8)+offset, eth_nic_base); - offset++; -#else - *ip++ = acc; -#endif - acc = 0; - } - i++; - } while (c != '\0'); -} - -#ifdef __ROMCC__ -static void str2mac_load(const char *str, unsigned short offset, unsigned int eth_nic_base) -#else -static void str2mac(const char *str, unsigned char *mac) -#endif -{ - unsigned char c, i = 0; - int acc = 0; - - do { - - c = str[i]; - if ((c >= '0') && (c <= '9')) { - acc *= 16; - acc += (c - '0'); - } else if ((c >= 'a') && (c <= 'f')) { - acc *= 16; - acc += ((c - 'a') + 10) ; - } else if ((c >= 'A') && (c <= 'F')) { - acc *= 16; - acc += ((c - 'A') + 10) ; - } else { -#ifdef __ROMCC__ - eth_pio_write_byte(acc, ((TX_START << 8)+offset), eth_nic_base); - offset++; -#else - *mac++ = acc; -#endif - acc = 0; - } - - i++; - } while (c != '\0'); -} - - -#ifndef __ROMCC__ -static void ns8390_tx_header(unsigned int eth_nic_base, int pktlen) { - unsigned short chksum; - unsigned char hdr[] = { -#else -static const unsigned char hdr[] = { -#endif - /* - * ETHERNET HDR - */ - - // destination macaddr - 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, - /* source mac */ - 0x02, 0x00, 0x00, 0xC0, 0xFF, 0xEE, - /* ethtype (IP) */ - 0x08, 0x00, - /* - * IP HDR - */ - 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, - /* TTL, proto (UDP), chksum_hi, chksum_lo, IP0, IP1, IP2, IP3, */ - 0x40, 0x11, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x1, - /* IP0, IP1, IP2, IP3 */ - 0xff, 0xff, 0xff, 0xff, - /* - * UDP HDR - */ - /* SRC PORT DST PORT (2bytes each), ulen, uchksum (must be zero or correct */ - 0x1a, 0x0b, 0x1a, 0x0a, 0x00, 0x9, 0x00, 0x00, - }; - -#ifndef __ROMCC__ - str2mac(CONFIG_CONSOLE_NE2K_DST_MAC, &hdr[0]); - str2ip(CONFIG_CONSOLE_NE2K_DST_IP, &hdr[30]); - str2ip(CONFIG_CONSOLE_NE2K_SRC_IP, &hdr[26]); - - /* zero checksum */ - hdr[24] = 0; - hdr[25] = 0; - - /* update IP packet len */ - hdr[16] = ((28 + pktlen) >> 8) & 0xff; - hdr[17] = (28 + pktlen) & 0xff; - - /* update UDP len */ - hdr[38] = (8 + pktlen) >> 8; - hdr[39] = 8 + pktlen; - - chksum = compute_ip_checksum(&hdr[14], 20); - - hdr[25] = chksum >> 8; - hdr[24] = chksum; - eth_pio_write(hdr, (TX_START << 8), sizeof(hdr), eth_nic_base); -} - - -#else - -/* ROMCC madness */ -static void ns8390_tx_header(unsigned int eth_nic_base, int pktlen) -{ - unsigned short chksum; - - eth_pio_write(hdr, (TX_START << 8), sizeof(hdr), eth_nic_base); - - str2mac_load(CONFIG_CONSOLE_NE2K_DST_MAC, 0, eth_nic_base); - - str2ip_load(CONFIG_CONSOLE_NE2K_DST_IP, 30, eth_nic_base); - str2ip_load(CONFIG_CONSOLE_NE2K_SRC_IP, 26, eth_nic_base); - /* zero checksum */ - eth_pio_write_byte(0, (TX_START << 8)+24, eth_nic_base); - eth_pio_write_byte(0, (TX_START << 8)+25, eth_nic_base); - - /* update IP packet len */ - eth_pio_write_byte(((28 + pktlen) >> 8) & 0xff, (TX_START << 8)+16, eth_nic_base); - eth_pio_write_byte( (28 + pktlen) & 0xff, (TX_START << 8)+17, eth_nic_base); - - /* update UDP len */ - eth_pio_write_byte((8 + pktlen) >> 8, (TX_START << 8)+38, eth_nic_base); - eth_pio_write_byte( 8 + pktlen, (TX_START << 8)+39, eth_nic_base); - - chksum = compute_ip_checksum_from_sram(14, 20, eth_nic_base); - - eth_pio_write_byte(chksum, (TX_START << 8)+24, eth_nic_base); - eth_pio_write_byte(chksum >> 8, (TX_START << 8)+25, eth_nic_base); -} - -#endif - -void ne2k_transmit(unsigned int eth_nic_base) { - unsigned int pktsize; - unsigned int len = get_count(eth_nic_base); - - // so place whole header inside chip buffer - ns8390_tx_header(eth_nic_base, len); - - // commit sending now - outb(D8390_COMMAND_PS0 | D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - - outb(TX_START, eth_nic_base + D8390_P0_TPSR); - - pktsize = 42 + len; - if (pktsize < 64) - pktsize = 64; - - outb(pktsize, eth_nic_base + D8390_P0_TBCR0); - outb(pktsize >> 8, eth_nic_base + D8390_P0_TBCR1); - - outb(D8390_ISR_PTX, eth_nic_base + D8390_P0_ISR); - - outb(D8390_COMMAND_PS0 | D8390_COMMAND_TXP | D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND); - - /* wait for operation finish */ - while ((inb(eth_nic_base + D8390_P0_ISR) & D8390_ISR_PTX) != D8390_ISR_PTX) ; - - set_count(eth_nic_base, 0); -} - -#ifdef __PRE_RAM__ - -static void ns8390_reset(unsigned int eth_nic_base) -{ - int i; - - outb(D8390_COMMAND_PS0 | D8390_COMMAND_RD2 | - D8390_COMMAND_STP, eth_nic_base + D8390_P0_COMMAND); - - outb(0x48, eth_nic_base + D8390_P0_DCR); - outb(0, eth_nic_base + D8390_P0_RBCR0); - outb(0, eth_nic_base + D8390_P0_RBCR1); - outb(0x20, eth_nic_base + D8390_P0_RCR); - outb(2, eth_nic_base + D8390_P0_TCR); - outb(TX_START, eth_nic_base + D8390_P0_TPSR); - outb(RX_START, eth_nic_base + D8390_P0_PSTART); - outb(MEM_SIZE, eth_nic_base + D8390_P0_PSTOP); - outb(MEM_SIZE - 1, eth_nic_base + D8390_P0_BOUND); - outb(0xFF, eth_nic_base + D8390_P0_ISR); - outb(0, eth_nic_base + D8390_P0_IMR); - - outb(D8390_COMMAND_PS1 | - D8390_COMMAND_RD2 | D8390_COMMAND_STP, - eth_nic_base + D8390_P0_COMMAND); - - for (i = 0; i < ETH_ALEN; i++) - outb(0x0C, eth_nic_base + D8390_P1_PAR0 + i); - - for (i = 0; i < ETH_ALEN; i++) - outb(0xFF, eth_nic_base + D8390_P1_MAR0 + i); - - outb(RX_START, eth_nic_base + D8390_P1_CURR); - outb(D8390_COMMAND_PS0 | - D8390_COMMAND_RD2 | D8390_COMMAND_STA, - eth_nic_base + D8390_P0_COMMAND); - outb(0xFF, eth_nic_base + D8390_P0_ISR); - outb(0, eth_nic_base + D8390_P0_TCR); - outb(4, eth_nic_base + D8390_P0_RCR); - set_count(eth_nic_base, 0); -} - - -int ne2k_init(unsigned int eth_nic_base) { - - device_t dev; - unsigned char c; - - /* Power management controller */ - dev = pci_locate_device(PCI_ID(0x10ec, - 0x8029), 0); - - if (dev == PCI_DEV_INVALID) - return 0; - - pci_write_config32(dev, 0x10, eth_nic_base | 1 ); - pci_write_config8(dev, 0x4, 0x1); - - c = inb(eth_nic_base + NE_ASIC_OFFSET + NE_RESET); - outb(c, eth_nic_base + NE_ASIC_OFFSET + NE_RESET); - - (void) inb(0x84); - - outb(D8390_COMMAND_STP | D8390_COMMAND_RD2, eth_nic_base + D8390_P0_COMMAND); - outb(D8390_RCR_MON, eth_nic_base + D8390_P0_RCR); - - outb(D8390_DCR_FT1 | D8390_DCR_LS, eth_nic_base + D8390_P0_DCR); - outb(MEM_8192, eth_nic_base + D8390_P0_PSTART); - outb(MEM_16384, eth_nic_base + D8390_P0_PSTOP); - - ns8390_reset(eth_nic_base); - return 1; -} - -#else - -#include <delay.h> -#include <stdlib.h> -#include <string.h> -#include <arch/io.h> - -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <device/pci_ops.h> - -static void read_resources(struct device *dev) -{ - struct resource *res; - - res = new_resource(dev, PCI_BASE_ADDRESS_0); - res->base = CONFIG_CONSOLE_NE2K_IO_PORT; - res->size = 32; - res->align = 5; - res->gran = 5; - res->limit = res->base + res->size - 1; - res->flags = IORESOURCE_IO | IORESOURCE_FIXED | IORESOURCE_STORED | - IORESOURCE_ASSIGNED; - return; -} - -static struct device_operations ne2k_ops = { - .read_resources = read_resources, - .set_resources = pci_dev_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = 0, - .scan_bus = 0, -}; - -static const struct pci_driver ne2k_driver __pci_driver = { - .ops = &ne2k_ops, - .vendor = 0x10ec, - .device = 0x8029, -}; - -#endif diff --git a/src/lib/ns8390.h b/src/lib/ns8390.h deleted file mode 100644 index eeffe459f6..0000000000 --- a/src/lib/ns8390.h +++ /dev/null @@ -1,110 +0,0 @@ -/************************************************************************** -ETHERBOOT - BOOTP/TFTP Bootstrap Program - -Author: Martin Renters - Date: Jun/94 - -**************************************************************************/ - -//FILE_LICENCE ( BSD2 ); - -#define VENDOR_NONE 0 -#define VENDOR_WD 1 -#define VENDOR_NOVELL 2 -#define VENDOR_3COM 3 - -#define FLAG_PIO 0x01 -#define FLAG_16BIT 0x02 -#define FLAG_790 0x04 - -#define MEM_8192 32 -#define MEM_16384 64 -#define MEM_32768 128 - -#define ISA_MAX_ADDR 0x400 - -/************************************************************************** -NE1000/2000 definitions -**************************************************************************/ -#define NE_ASIC_OFFSET 0x10 -#define NE_RESET 0x0F /* Used to reset card */ -#define NE_DATA 0x00 /* Used to read/write NIC mem */ - -#define COMPEX_RL2000_TRIES 200 - -/************************************************************************** -8390 Register Definitions -**************************************************************************/ -#define D8390_P0_COMMAND 0x00 -#define D8390_P0_PSTART 0x01 -#define D8390_P0_PSTOP 0x02 -#define D8390_P0_BOUND 0x03 -#define D8390_P0_TSR 0x04 -#define D8390_P0_TPSR 0x04 -#define D8390_P0_TBCR0 0x05 -#define D8390_P0_TBCR1 0x06 -#define D8390_P0_ISR 0x07 -#define D8390_P0_RSAR0 0x08 -#define D8390_P0_RSAR1 0x09 -#define D8390_P0_RBCR0 0x0A -#define D8390_P0_RBCR1 0x0B -#define D8390_P0_RSR 0x0C -#define D8390_P0_RCR 0x0C -#define D8390_P0_TCR 0x0D -#define D8390_P0_DCR 0x0E -#define D8390_P0_IMR 0x0F -#define D8390_P1_COMMAND 0x00 -#define D8390_P1_PAR0 0x01 -#define D8390_P1_PAR1 0x02 -#define D8390_P1_PAR2 0x03 -#define D8390_P1_PAR3 0x04 -#define D8390_P1_PAR4 0x05 -#define D8390_P1_PAR5 0x06 -#define D8390_P1_CURR 0x07 -#define D8390_P1_MAR0 0x08 - -#define D8390_COMMAND_PS0 0x0 /* Page 0 select */ -#define D8390_COMMAND_PS1 0x40 /* Page 1 select */ -#define D8390_COMMAND_PS2 0x80 /* Page 2 select */ -#define D8390_COMMAND_RD2 0x20 /* Remote DMA control */ -#define D8390_COMMAND_RD1 0x10 -#define D8390_COMMAND_RD0 0x08 -#define D8390_COMMAND_TXP 0x04 /* transmit packet */ -#define D8390_COMMAND_STA 0x02 /* start */ -#define D8390_COMMAND_STP 0x01 /* stop */ - -#define D8390_RCR_MON 0x20 /* monitor mode */ - -#define D8390_DCR_FT1 0x40 -#define D8390_DCR_LS 0x08 /* Loopback select */ -#define D8390_DCR_WTS 0x01 /* Word transfer select */ - -#define D8390_ISR_PRX 0x01 /* successful recv */ -#define D8390_ISR_PTX 0x02 /* successful xmit */ -#define D8390_ISR_RXE 0x04 /* receive error */ -#define D8390_ISR_TXE 0x08 /* transmit error */ -#define D8390_ISR_OVW 0x10 /* Overflow */ -#define D8390_ISR_CNT 0x20 /* Counter overflow */ -#define D8390_ISR_RDC 0x40 /* Remote DMA complete */ -#define D8390_ISR_RST 0x80 /* reset */ - -#define D8390_RSTAT_PRX 0x01 /* successful recv */ -#define D8390_RSTAT_CRC 0x02 /* CRC error */ -#define D8390_RSTAT_FAE 0x04 /* Frame alignment error */ -#define D8390_RSTAT_OVER 0x08 /* FIFO overrun */ - -#define D8390_TXBUF_SIZE 6 -#define D8390_RXBUF_END 32 -#define D8390_PAGE_SIZE 256 - -struct ringbuffer { - unsigned char status; - unsigned char next; - unsigned short len; -}; -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ - |