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| Current File : //sys/dev/ed/if_ed_hpp.c |
/*-
* Copyright (c) 2005, M. Warner Losh
* All rights reserved.
* Copyright (c) 1995, David Greenman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/ed/if_ed_hpp.c 154924 2006-01-27 19:10:13Z imp $");
#include "opt_ed.h"
#ifdef ED_HPP
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_mib.h>
#include <net/if_media.h>
#include <net/bpf.h>
#include <dev/ed/if_edreg.h>
#include <dev/ed/if_edvar.h>
static void ed_hpp_readmem(struct ed_softc *, bus_size_t, uint8_t *,
uint16_t);
static void ed_hpp_writemem(struct ed_softc *, uint8_t *, uint16_t,
uint16_t);
static void ed_hpp_set_physical_link(struct ed_softc *sc);
static u_short ed_hpp_write_mbufs(struct ed_softc *, struct mbuf *,
bus_size_t);
/*
* Interrupt conversion table for the HP PC LAN+
*/
static uint16_t ed_hpp_intr_val[] = {
0, /* 0 */
0, /* 1 */
0, /* 2 */
3, /* 3 */
4, /* 4 */
5, /* 5 */
6, /* 6 */
7, /* 7 */
0, /* 8 */
9, /* 9 */
10, /* 10 */
11, /* 11 */
12, /* 12 */
0, /* 13 */
0, /* 14 */
15 /* 15 */
};
#define ED_HPP_TEST_SIZE 16
/*
* Probe and vendor specific initialization for the HP PC Lan+ Cards.
* (HP Part nos: 27247B and 27252A).
*
* The card has an asic wrapper around a DS8390 core. The asic handles
* host accesses and offers both standard register IO and memory mapped
* IO. Memory mapped I/O allows better performance at the expense of greater
* chance of an incompatibility with existing ISA cards.
*
* The card has a few caveats: it isn't tolerant of byte wide accesses, only
* short (16 bit) or word (32 bit) accesses are allowed. Some card revisions
* don't allow 32 bit accesses; these are indicated by a bit in the software
* ID register (see if_edreg.h).
*
* Other caveats are: we should read the MAC address only when the card
* is inactive.
*
* For more information; please consult the CRYNWR packet driver.
*
* The AUI port is turned on using the "link2" option on the ifconfig
* command line.
*/
int
ed_probe_HP_pclanp(device_t dev, int port_rid, int flags)
{
struct ed_softc *sc = device_get_softc(dev);
int error;
int n; /* temp var */
int memsize; /* mem on board */
u_char checksum; /* checksum of board address */
u_char irq; /* board configured IRQ */
uint8_t test_pattern[ED_HPP_TEST_SIZE]; /* read/write areas for */
uint8_t test_buffer[ED_HPP_TEST_SIZE]; /* probing card */
u_long conf_maddr, conf_msize, conf_irq, junk;
error = ed_alloc_port(dev, 0, ED_HPP_IO_PORTS);
if (error)
return (error);
/* Fill in basic information */
sc->asic_offset = ED_HPP_ASIC_OFFSET;
sc->nic_offset = ED_HPP_NIC_OFFSET;
sc->chip_type = ED_CHIP_TYPE_DP8390;
sc->isa16bit = 0; /* the 8390 core needs to be in byte mode */
/*
* Look for the HP PCLAN+ signature: "0x50,0x48,0x00,0x53"
*/
if ((ed_asic_inb(sc, ED_HPP_ID) != 0x50) ||
(ed_asic_inb(sc, ED_HPP_ID + 1) != 0x48) ||
((ed_asic_inb(sc, ED_HPP_ID + 2) & 0xF0) != 0) ||
(ed_asic_inb(sc, ED_HPP_ID + 3) != 0x53))
return (ENXIO);
/*
* Read the MAC address and verify checksum on the address.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_MAC);
for (n = 0, checksum = 0; n < ETHER_ADDR_LEN; n++)
checksum += (sc->enaddr[n] =
ed_asic_inb(sc, ED_HPP_MAC_ADDR + n));
checksum += ed_asic_inb(sc, ED_HPP_MAC_ADDR + ETHER_ADDR_LEN);
if (checksum != 0xFF)
return (ENXIO);
/*
* Verify that the software model number is 0.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_ID);
if (((sc->hpp_id = ed_asic_inw(sc, ED_HPP_PAGE_4)) &
ED_HPP_ID_SOFT_MODEL_MASK) != 0x0000)
return (ENXIO);
/*
* Read in and save the current options configured on card.
*/
sc->hpp_options = ed_asic_inw(sc, ED_HPP_OPTION);
sc->hpp_options |= (ED_HPP_OPTION_NIC_RESET |
ED_HPP_OPTION_CHIP_RESET | ED_HPP_OPTION_ENABLE_IRQ);
/*
* Reset the chip. This requires writing to the option register
* so take care to preserve the other bits.
*/
ed_asic_outw(sc, ED_HPP_OPTION,
(sc->hpp_options & ~(ED_HPP_OPTION_NIC_RESET |
ED_HPP_OPTION_CHIP_RESET)));
DELAY(5000); /* wait for chip reset to complete */
ed_asic_outw(sc, ED_HPP_OPTION,
(sc->hpp_options | (ED_HPP_OPTION_NIC_RESET |
ED_HPP_OPTION_CHIP_RESET |
ED_HPP_OPTION_ENABLE_IRQ)));
DELAY(5000);
if (!(ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST))
return (ENXIO); /* reset did not complete */
/*
* Read out configuration information.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW);
irq = ed_asic_inb(sc, ED_HPP_HW_IRQ);
/*
* Check for impossible IRQ.
*/
if (irq >= (sizeof(ed_hpp_intr_val) / sizeof(ed_hpp_intr_val[0])))
return (ENXIO);
/*
* If the kernel IRQ was specified with a '?' use the cards idea
* of the IRQ. If the kernel IRQ was explicitly specified, it
* should match that of the hardware.
*/
error = bus_get_resource(dev, SYS_RES_IRQ, 0, &conf_irq, &junk);
if (error)
bus_set_resource(dev, SYS_RES_IRQ, 0, ed_hpp_intr_val[irq], 1);
else {
if (conf_irq != ed_hpp_intr_val[irq])
return (ENXIO);
}
/*
* Fill in softconfig info.
*/
sc->vendor = ED_VENDOR_HP;
sc->type = ED_TYPE_HP_PCLANPLUS;
sc->type_str = "HP-PCLAN+";
sc->mem_shared = 0; /* we DON'T have dual ported RAM */
sc->mem_start = 0; /* we use offsets inside the card RAM */
sc->hpp_mem_start = NULL;/* no memory mapped I/O by default */
/*
* The board has 32KB of memory. Is there a way to determine
* this programmatically?
*/
memsize = 32768;
/*
* Check if memory mapping of the I/O registers possible.
*/
if (sc->hpp_options & ED_HPP_OPTION_MEM_ENABLE) {
u_long mem_addr;
/*
* determine the memory address from the board.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW);
mem_addr = (ed_asic_inw(sc, ED_HPP_HW_MEM_MAP) << 8);
/*
* Check that the kernel specified start of memory and
* hardware's idea of it match.
*/
error = bus_get_resource(dev, SYS_RES_MEMORY, 0,
&conf_maddr, &conf_msize);
if (error)
return (error);
if (mem_addr != conf_maddr)
return (ENXIO);
error = ed_alloc_memory(dev, 0, memsize);
if (error)
return (error);
sc->hpp_mem_start = rman_get_virtual(sc->mem_res);
}
/*
* Fill in the rest of the soft config structure.
*/
/*
* The transmit page index.
*/
sc->tx_page_start = ED_HPP_TX_PAGE_OFFSET;
if (device_get_flags(dev) & ED_FLAGS_NO_MULTI_BUFFERING)
sc->txb_cnt = 1;
else
sc->txb_cnt = 2;
/*
* Memory description
*/
sc->mem_size = memsize;
sc->mem_ring = sc->mem_start +
(sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE);
sc->mem_end = sc->mem_start + sc->mem_size;
/*
* Receive area starts after the transmit area and
* continues till the end of memory.
*/
sc->rec_page_start = sc->tx_page_start +
(sc->txb_cnt * ED_TXBUF_SIZE);
sc->rec_page_stop = (sc->mem_size / ED_PAGE_SIZE);
sc->cr_proto = 0; /* value works */
/*
* Set the wrap registers for string I/O reads.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_HW);
ed_asic_outw(sc, ED_HPP_HW_WRAP,
((sc->rec_page_start / ED_PAGE_SIZE) |
(((sc->rec_page_stop / ED_PAGE_SIZE) - 1) << 8)));
/*
* Reset the register page to normal operation.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_PERF);
/*
* Verify that we can read/write from adapter memory.
* Create test pattern.
*/
for (n = 0; n < ED_HPP_TEST_SIZE; n++)
test_pattern[n] = (n*n) ^ ~n;
#undef ED_HPP_TEST_SIZE
/*
* Check that the memory is accessible thru the I/O ports.
* Write out the contents of "test_pattern", read back
* into "test_buffer" and compare the two for any
* mismatch.
*/
for (n = 0; n < (32768 / ED_PAGE_SIZE); n ++) {
ed_hpp_writemem(sc, test_pattern, (n * ED_PAGE_SIZE),
sizeof(test_pattern));
ed_hpp_readmem(sc, (n * ED_PAGE_SIZE),
test_buffer, sizeof(test_pattern));
if (bcmp(test_pattern, test_buffer,
sizeof(test_pattern)))
return (ENXIO);
}
sc->sc_mediachg = ed_hpp_set_physical_link;
sc->sc_write_mbufs = ed_hpp_write_mbufs;
sc->readmem = ed_hpp_readmem;
return (0);
}
/*
* HP PC Lan+ : Set the physical link to use AUI or TP/TL.
*/
static void
ed_hpp_set_physical_link(struct ed_softc *sc)
{
struct ifnet *ifp = sc->ifp;
int lan_page;
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN);
lan_page = ed_asic_inw(sc, ED_HPP_PAGE_0);
if (ifp->if_flags & IFF_LINK2) {
/*
* Use the AUI port.
*/
lan_page |= ED_HPP_LAN_AUI;
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN);
ed_asic_outw(sc, ED_HPP_PAGE_0, lan_page);
} else {
/*
* Use the ThinLan interface
*/
lan_page &= ~ED_HPP_LAN_AUI;
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_LAN);
ed_asic_outw(sc, ED_HPP_PAGE_0, lan_page);
}
/*
* Wait for the lan card to re-initialize itself
*/
DELAY(150000); /* wait 150 ms */
/*
* Restore normal pages.
*/
ed_asic_outw(sc, ED_HPP_PAGING, ED_HPP_PAGE_PERF);
}
/*
* Support routines to handle the HP PC Lan+ card.
*/
/*
* HP PC Lan+: Read from NIC memory, using either PIO or memory mapped
* IO.
*/
static void
ed_hpp_readmem(struct ed_softc *sc, bus_size_t src, uint8_t *dst,
uint16_t amount)
{
int use_32bit_access = !(sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS);
/* Program the source address in RAM */
ed_asic_outw(sc, ED_HPP_PAGE_2, src);
/*
* The HP PC Lan+ card supports word reads as well as
* a memory mapped i/o port that is aliased to every
* even address on the board.
*/
if (sc->hpp_mem_start) {
/* Enable memory mapped access. */
ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options &
~(ED_HPP_OPTION_MEM_DISABLE |
ED_HPP_OPTION_BOOT_ROM_ENB));
if (use_32bit_access && (amount > 3)) {
uint32_t *dl = (uint32_t *) dst;
volatile uint32_t *const sl =
(uint32_t *) sc->hpp_mem_start;
uint32_t *const fence = dl + (amount >> 2);
/*
* Copy out NIC data. We could probably write this
* as a `movsl'. The currently generated code is lousy.
*/
while (dl < fence)
*dl++ = *sl;
dst += (amount & ~3);
amount &= 3;
}
/* Finish off any words left, as a series of short reads */
if (amount > 1) {
u_short *d = (u_short *) dst;
volatile u_short *const s =
(u_short *) sc->hpp_mem_start;
u_short *const fence = d + (amount >> 1);
/* Copy out NIC data. */
while (d < fence)
*d++ = *s;
dst += (amount & ~1);
amount &= 1;
}
/*
* read in a byte; however we need to always read 16 bits
* at a time or the hardware gets into a funny state
*/
if (amount == 1) {
/* need to read in a short and copy LSB */
volatile u_short *const s =
(volatile u_short *) sc->hpp_mem_start;
*dst = (*s) & 0xFF;
}
/* Restore Boot ROM access. */
ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options);
} else {
/* Read in data using the I/O port */
if (use_32bit_access && (amount > 3)) {
ed_asic_insl(sc, ED_HPP_PAGE_4, dst, amount >> 2);
dst += (amount & ~3);
amount &= 3;
}
if (amount > 1) {
ed_asic_insw(sc, ED_HPP_PAGE_4, dst, amount >> 1);
dst += (amount & ~1);
amount &= 1;
}
if (amount == 1) { /* read in a short and keep the LSB */
*dst = ed_asic_inw(sc, ED_HPP_PAGE_4) & 0xFF;
}
}
}
/*
* HP PC Lan+: Write to NIC memory, using either PIO or memory mapped
* IO.
* Only used in the probe routine to test the memory. 'len' must
* be even.
*/
static void
ed_hpp_writemem(struct ed_softc *sc, uint8_t *src, uint16_t dst, uint16_t len)
{
/* reset remote DMA complete flag */
ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC);
/* program the write address in RAM */
ed_asic_outw(sc, ED_HPP_PAGE_0, dst);
if (sc->hpp_mem_start) {
u_short *s = (u_short *) src;
volatile u_short *d = (u_short *) sc->hpp_mem_start;
u_short *const fence = s + (len >> 1);
/*
* Enable memory mapped access.
*/
ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options &
~(ED_HPP_OPTION_MEM_DISABLE |
ED_HPP_OPTION_BOOT_ROM_ENB));
/*
* Copy to NIC memory.
*/
while (s < fence)
*d = *s++;
/*
* Restore Boot ROM access.
*/
ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options);
} else {
/* write data using I/O writes */
ed_asic_outsw(sc, ED_HPP_PAGE_4, src, len / 2);
}
}
/*
* Write to HP PC Lan+ NIC memory. Access to the NIC can be by using
* outsw() or via the memory mapped interface to the same register.
* Writes have to be in word units; byte accesses won't work and may cause
* the NIC to behave weirdly. Long word accesses are permitted if the ASIC
* allows it.
*/
static u_short
ed_hpp_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
{
int len, wantbyte;
unsigned short total_len;
unsigned char savebyte[2];
volatile u_short * const d =
(volatile u_short *) sc->hpp_mem_start;
int use_32bit_accesses = !(sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS);
/* select page 0 registers */
ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA);
/* reset remote DMA complete flag */
ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC);
/* program the write address in RAM */
ed_asic_outw(sc, ED_HPP_PAGE_0, dst);
if (sc->hpp_mem_start) /* enable memory mapped I/O */
ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options &
~(ED_HPP_OPTION_MEM_DISABLE |
ED_HPP_OPTION_BOOT_ROM_ENB));
wantbyte = 0;
total_len = 0;
if (sc->hpp_mem_start) { /* Memory mapped I/O port */
while (m) {
total_len += (len = m->m_len);
if (len) {
caddr_t data = mtod(m, caddr_t);
/* finish the last word of the previous mbuf */
if (wantbyte) {
savebyte[1] = *data;
*d = *((u_short *) savebyte);
data++; len--; wantbyte = 0;
}
/* output contiguous words */
if ((len > 3) && (use_32bit_accesses)) {
volatile uint32_t *const dl =
(volatile uint32_t *) d;
uint32_t *sl = (uint32_t *) data;
uint32_t *fence = sl + (len >> 2);
while (sl < fence)
*dl = *sl++;
data += (len & ~3);
len &= 3;
}
/* finish off remain 16 bit writes */
if (len > 1) {
u_short *s = (u_short *) data;
u_short *fence = s + (len >> 1);
while (s < fence)
*d = *s++;
data += (len & ~1);
len &= 1;
}
/* save last byte if needed */
if ((wantbyte = (len == 1)) != 0)
savebyte[0] = *data;
}
m = m->m_next; /* to next mbuf */
}
if (wantbyte) /* write last byte */
*d = *((u_short *) savebyte);
} else {
/* use programmed I/O */
while (m) {
total_len += (len = m->m_len);
if (len) {
caddr_t data = mtod(m, caddr_t);
/* finish the last word of the previous mbuf */
if (wantbyte) {
savebyte[1] = *data;
ed_asic_outw(sc, ED_HPP_PAGE_4,
*((u_short *)savebyte));
data++;
len--;
wantbyte = 0;
}
/* output contiguous words */
if ((len > 3) && use_32bit_accesses) {
ed_asic_outsl(sc, ED_HPP_PAGE_4,
data, len >> 2);
data += (len & ~3);
len &= 3;
}
/* finish off remaining 16 bit accesses */
if (len > 1) {
ed_asic_outsw(sc, ED_HPP_PAGE_4,
data, len >> 1);
data += (len & ~1);
len &= 1;
}
if ((wantbyte = (len == 1)) != 0)
savebyte[0] = *data;
} /* if len != 0 */
m = m->m_next;
}
if (wantbyte) /* spit last byte */
ed_asic_outw(sc, ED_HPP_PAGE_4, *(u_short *)savebyte);
}
if (sc->hpp_mem_start) /* turn off memory mapped i/o */
ed_asic_outw(sc, ED_HPP_OPTION, sc->hpp_options);
return (total_len);
}
#endif /* ED_HPP */