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[PATCH] declance: Fix PMAX and PMAD support
The shared buffer used by the LANCE on the PMAX only supports halfword (16-bit) accesses. And the PMAD has the buffer wired differently. This is a change to fix these issues. Tested with a DECstation 2100 (thanks Flo for making this possible) and a DECstation 5000/133 (both the PMAD and the onboard LANCE). Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Maciej W. Rozycki
Jeff Garzik
parent
4e1400796c
commit
3b6e8fe7ec
@ -40,6 +40,10 @@
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*
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* v0.009: Module support fixes, multiple interfaces support, various
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* bits. macro
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*
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* v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the
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* PMAX requirement to only use halfword accesses to the
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* buffer. macro
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*/
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#include <linux/crc32.h>
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@ -54,6 +58,7 @@
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#include <linux/spinlock.h>
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#include <linux/stddef.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <asm/addrspace.h>
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#include <asm/system.h>
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@ -67,7 +72,7 @@
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#include <asm/dec/tc.h>
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static char version[] __devinitdata =
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"declance.c: v0.009 by Linux MIPS DECstation task force\n";
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"declance.c: v0.010 by Linux MIPS DECstation task force\n";
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MODULE_AUTHOR("Linux MIPS DECstation task force");
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MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver");
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@ -110,24 +115,25 @@ MODULE_LICENSE("GPL");
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#define LE_C3_BCON 0x1 /* Byte control */
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/* Receive message descriptor 1 */
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#define LE_R1_OWN 0x80 /* Who owns the entry */
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#define LE_R1_ERR 0x40 /* Error: if FRA, OFL, CRC or BUF is set */
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#define LE_R1_FRA 0x20 /* FRA: Frame error */
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#define LE_R1_OFL 0x10 /* OFL: Frame overflow */
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#define LE_R1_CRC 0x08 /* CRC error */
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#define LE_R1_BUF 0x04 /* BUF: Buffer error */
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#define LE_R1_SOP 0x02 /* Start of packet */
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#define LE_R1_EOP 0x01 /* End of packet */
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#define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */
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#define LE_R1_OWN 0x8000 /* Who owns the entry */
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#define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */
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#define LE_R1_FRA 0x2000 /* FRA: Frame error */
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#define LE_R1_OFL 0x1000 /* OFL: Frame overflow */
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#define LE_R1_CRC 0x0800 /* CRC error */
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#define LE_R1_BUF 0x0400 /* BUF: Buffer error */
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#define LE_R1_SOP 0x0200 /* Start of packet */
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#define LE_R1_EOP 0x0100 /* End of packet */
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#define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */
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#define LE_T1_OWN 0x80 /* Lance owns the packet */
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#define LE_T1_ERR 0x40 /* Error summary */
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#define LE_T1_EMORE 0x10 /* Error: more than one retry needed */
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#define LE_T1_EONE 0x08 /* Error: one retry needed */
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#define LE_T1_EDEF 0x04 /* Error: deferred */
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#define LE_T1_SOP 0x02 /* Start of packet */
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#define LE_T1_EOP 0x01 /* End of packet */
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#define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */
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/* Transmit message descriptor 1 */
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#define LE_T1_OWN 0x8000 /* Lance owns the packet */
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#define LE_T1_ERR 0x4000 /* Error summary */
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#define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */
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#define LE_T1_EONE 0x0800 /* Error: one retry needed */
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#define LE_T1_EDEF 0x0400 /* Error: deferred */
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#define LE_T1_SOP 0x0200 /* Start of packet */
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#define LE_T1_EOP 0x0100 /* End of packet */
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#define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */
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#define LE_T3_BUF 0x8000 /* Buffer error */
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#define LE_T3_UFL 0x4000 /* Error underflow */
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@ -156,69 +162,57 @@ MODULE_LICENSE("GPL");
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#undef TEST_HITS
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#define ZERO 0
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/* The DS2000/3000 have a linear 64 KB buffer.
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* The PMAD-AA has 128 kb buffer on-board.
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/*
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* The DS2100/3100 have a linear 64 kB buffer which supports halfword
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* accesses only. Each halfword of the buffer is word-aligned in the
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* CPU address space.
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*
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* The IOASIC LANCE devices use a shared memory region. This region as seen
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* from the CPU is (max) 128 KB long and has to be on an 128 KB boundary.
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* The LANCE sees this as a 64 KB long continuous memory region.
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* The PMAD-AA has a 128 kB buffer on-board.
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*
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* The LANCE's DMA address is used as an index in this buffer and DMA takes
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* place in bursts of eight 16-Bit words which are packed into four 32-Bit words
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* by the IOASIC. This leads to a strange padding: 16 bytes of valid data followed
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* by a 16 byte gap :-(.
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* The IOASIC LANCE devices use a shared memory region. This region
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* as seen from the CPU is (max) 128 kB long and has to be on an 128 kB
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* boundary. The LANCE sees this as a 64 kB long continuous memory
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* region.
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*
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* The LANCE's DMA address is used as an index in this buffer and DMA
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* takes place in bursts of eight 16-bit words which are packed into
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* four 32-bit words by the IOASIC. This leads to a strange padding:
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* 16 bytes of valid data followed by a 16 byte gap :-(.
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*/
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struct lance_rx_desc {
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unsigned short rmd0; /* low address of packet */
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short gap0;
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unsigned char rmd1_hadr; /* high address of packet */
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unsigned char rmd1_bits; /* descriptor bits */
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short gap1;
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unsigned short rmd1; /* high address of packet
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and descriptor bits */
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short length; /* 2s complement (negative!)
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of buffer length */
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short gap2;
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unsigned short mblength; /* actual number of bytes received */
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short gap3;
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};
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struct lance_tx_desc {
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unsigned short tmd0; /* low address of packet */
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short gap0;
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unsigned char tmd1_hadr; /* high address of packet */
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unsigned char tmd1_bits; /* descriptor bits */
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short gap1;
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unsigned short tmd1; /* high address of packet
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and descriptor bits */
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short length; /* 2s complement (negative!)
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of buffer length */
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short gap2;
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unsigned short misc;
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short gap3;
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};
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/* First part of the LANCE initialization block, described in databook. */
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struct lance_init_block {
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unsigned short mode; /* pre-set mode (reg. 15) */
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short gap0;
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unsigned char phys_addr[12]; /* physical ethernet address
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only 0, 1, 4, 5, 8, 9 are valid
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2, 3, 6, 7, 10, 11 are gaps */
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unsigned short filter[8]; /* multicast filter
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only 0, 2, 4, 6 are valid
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1, 3, 5, 7 are gaps */
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unsigned short phys_addr[3]; /* physical ethernet address */
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unsigned short filter[4]; /* multicast filter */
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/* Receive and transmit ring base, along with extra bits. */
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unsigned short rx_ptr; /* receive descriptor addr */
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short gap1;
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unsigned short rx_len; /* receive len and high addr */
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short gap2;
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unsigned short tx_ptr; /* transmit descriptor addr */
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short gap3;
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unsigned short tx_len; /* transmit len and high addr */
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short gap4;
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short gap5[8];
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short gap[4];
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/* The buffer descriptors */
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struct lance_rx_desc brx_ring[RX_RING_SIZE];
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@ -226,15 +220,28 @@ struct lance_init_block {
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};
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#define BUF_OFFSET_CPU sizeof(struct lance_init_block)
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#define BUF_OFFSET_LNC (sizeof(struct lance_init_block)>>1)
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#define BUF_OFFSET_LNC sizeof(struct lance_init_block)
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#define libdesc_offset(rt, elem) \
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((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem])))))
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#define shift_off(off, type) \
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(type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off)
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/*
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* This works *only* for the ring descriptors
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*/
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#define LANCE_ADDR(x) (CPHYSADDR(x) >> 1)
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#define lib_off(rt, type) \
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shift_off(offsetof(struct lance_init_block, rt), type)
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#define lib_ptr(ib, rt, type) \
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((volatile u16 *)((u8 *)(ib) + lib_off(rt, type)))
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#define rds_off(rt, type) \
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shift_off(offsetof(struct lance_rx_desc, rt), type)
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#define rds_ptr(rd, rt, type) \
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((volatile u16 *)((u8 *)(rd) + rds_off(rt, type)))
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#define tds_off(rt, type) \
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shift_off(offsetof(struct lance_tx_desc, rt), type)
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#define tds_ptr(td, rt, type) \
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((volatile u16 *)((u8 *)(td) + tds_off(rt, type)))
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struct lance_private {
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struct net_device *next;
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@ -242,7 +249,6 @@ struct lance_private {
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int slot;
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int dma_irq;
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volatile struct lance_regs *ll;
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volatile struct lance_init_block *init_block;
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spinlock_t lock;
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@ -260,8 +266,8 @@ struct lance_private {
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char *tx_buf_ptr_cpu[TX_RING_SIZE];
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/* Pointers to the ring buffers as seen from the LANCE */
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char *rx_buf_ptr_lnc[RX_RING_SIZE];
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char *tx_buf_ptr_lnc[TX_RING_SIZE];
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uint rx_buf_ptr_lnc[RX_RING_SIZE];
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uint tx_buf_ptr_lnc[TX_RING_SIZE];
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};
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#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
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@ -294,7 +300,7 @@ static inline void writereg(volatile unsigned short *regptr, short value)
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static void load_csrs(struct lance_private *lp)
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{
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volatile struct lance_regs *ll = lp->ll;
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int leptr;
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uint leptr;
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/* The address space as seen from the LANCE
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* begins at address 0. HK
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@ -316,12 +322,14 @@ static void load_csrs(struct lance_private *lp)
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* Our specialized copy routines
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*
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*/
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void cp_to_buf(const int type, void *to, const void *from, int len)
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static void cp_to_buf(const int type, void *to, const void *from, int len)
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{
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unsigned short *tp, *fp, clen;
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unsigned char *rtp, *rfp;
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if (type == PMAX_LANCE) {
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if (type == PMAD_LANCE) {
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memcpy(to, from, len);
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} else if (type == PMAX_LANCE) {
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clen = len >> 1;
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tp = (unsigned short *) to;
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fp = (unsigned short *) from;
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@ -370,12 +378,14 @@ void cp_to_buf(const int type, void *to, const void *from, int len)
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iob();
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}
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void cp_from_buf(const int type, void *to, const void *from, int len)
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static void cp_from_buf(const int type, void *to, const void *from, int len)
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{
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unsigned short *tp, *fp, clen;
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unsigned char *rtp, *rfp;
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if (type == PMAX_LANCE) {
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if (type == PMAD_LANCE) {
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memcpy(to, from, len);
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} else if (type == PMAX_LANCE) {
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clen = len >> 1;
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tp = (unsigned short *) to;
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fp = (unsigned short *) from;
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@ -431,12 +441,10 @@ void cp_from_buf(const int type, void *to, const void *from, int len)
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static void lance_init_ring(struct net_device *dev)
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{
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struct lance_private *lp = netdev_priv(dev);
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volatile struct lance_init_block *ib;
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int leptr;
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volatile u16 *ib = (volatile u16 *)dev->mem_start;
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uint leptr;
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int i;
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ib = (struct lance_init_block *) (dev->mem_start);
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/* Lock out other processes while setting up hardware */
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netif_stop_queue(dev);
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lp->rx_new = lp->tx_new = 0;
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@ -445,55 +453,64 @@ static void lance_init_ring(struct net_device *dev)
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/* Copy the ethernet address to the lance init block.
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* XXX bit 0 of the physical address registers has to be zero
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*/
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ib->phys_addr[0] = dev->dev_addr[0];
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ib->phys_addr[1] = dev->dev_addr[1];
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ib->phys_addr[4] = dev->dev_addr[2];
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ib->phys_addr[5] = dev->dev_addr[3];
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ib->phys_addr[8] = dev->dev_addr[4];
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ib->phys_addr[9] = dev->dev_addr[5];
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*lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) |
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dev->dev_addr[0];
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*lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) |
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dev->dev_addr[2];
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*lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) |
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dev->dev_addr[4];
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/* Setup the initialization block */
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/* Setup rx descriptor pointer */
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leptr = LANCE_ADDR(libdesc_offset(brx_ring, 0));
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ib->rx_len = (LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16);
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ib->rx_ptr = leptr;
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leptr = offsetof(struct lance_init_block, brx_ring);
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*lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) |
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(leptr >> 16);
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*lib_ptr(ib, rx_ptr, lp->type) = leptr;
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if (ZERO)
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printk("RX ptr: %8.8x(%8.8x)\n", leptr, libdesc_offset(brx_ring, 0));
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printk("RX ptr: %8.8x(%8.8x)\n",
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leptr, lib_off(brx_ring, lp->type));
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/* Setup tx descriptor pointer */
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leptr = LANCE_ADDR(libdesc_offset(btx_ring, 0));
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ib->tx_len = (LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16);
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ib->tx_ptr = leptr;
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leptr = offsetof(struct lance_init_block, btx_ring);
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*lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) |
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(leptr >> 16);
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*lib_ptr(ib, tx_ptr, lp->type) = leptr;
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if (ZERO)
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printk("TX ptr: %8.8x(%8.8x)\n", leptr, libdesc_offset(btx_ring, 0));
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printk("TX ptr: %8.8x(%8.8x)\n",
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leptr, lib_off(btx_ring, lp->type));
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if (ZERO)
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printk("TX rings:\n");
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/* Setup the Tx ring entries */
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for (i = 0; i < TX_RING_SIZE; i++) {
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leptr = (int) lp->tx_buf_ptr_lnc[i];
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ib->btx_ring[i].tmd0 = leptr;
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ib->btx_ring[i].tmd1_hadr = leptr >> 16;
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ib->btx_ring[i].tmd1_bits = 0;
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ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */
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ib->btx_ring[i].misc = 0;
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leptr = lp->tx_buf_ptr_lnc[i];
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*lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr;
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*lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) &
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0xff;
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*lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000;
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/* The ones required by tmd2 */
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*lib_ptr(ib, btx_ring[i].misc, lp->type) = 0;
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if (i < 3 && ZERO)
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printk("%d: 0x%8.8x(0x%8.8x)\n", i, leptr, (int) lp->tx_buf_ptr_cpu[i]);
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printk("%d: 0x%8.8x(0x%8.8x)\n",
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i, leptr, (uint)lp->tx_buf_ptr_cpu[i]);
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}
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/* Setup the Rx ring entries */
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if (ZERO)
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printk("RX rings:\n");
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for (i = 0; i < RX_RING_SIZE; i++) {
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leptr = (int) lp->rx_buf_ptr_lnc[i];
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ib->brx_ring[i].rmd0 = leptr;
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ib->brx_ring[i].rmd1_hadr = leptr >> 16;
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ib->brx_ring[i].rmd1_bits = LE_R1_OWN;
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ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000;
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ib->brx_ring[i].mblength = 0;
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leptr = lp->rx_buf_ptr_lnc[i];
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*lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr;
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*lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) &
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0xff) |
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LE_R1_OWN;
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*lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE |
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0xf000;
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*lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0;
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if (i < 3 && ZERO)
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printk("%d: 0x%8.8x(0x%8.8x)\n", i, leptr, (int) lp->rx_buf_ptr_cpu[i]);
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printk("%d: 0x%8.8x(0x%8.8x)\n",
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i, leptr, (uint)lp->rx_buf_ptr_cpu[i]);
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}
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iob();
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}
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@ -511,11 +528,13 @@ static int init_restart_lance(struct lance_private *lp)
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udelay(10);
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}
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if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
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printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, ll->rdp);
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printk("LANCE unopened after %d ticks, csr0=%4.4x.\n",
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i, ll->rdp);
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return -1;
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}
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if ((ll->rdp & LE_C0_ERR)) {
|
||||
printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, ll->rdp);
|
||||
printk("LANCE unopened after %d ticks, csr0=%4.4x.\n",
|
||||
i, ll->rdp);
|
||||
return -1;
|
||||
}
|
||||
writereg(&ll->rdp, LE_C0_IDON);
|
||||
@ -528,12 +547,11 @@ static int init_restart_lance(struct lance_private *lp)
|
||||
static int lance_rx(struct net_device *dev)
|
||||
{
|
||||
struct lance_private *lp = netdev_priv(dev);
|
||||
volatile struct lance_init_block *ib;
|
||||
volatile struct lance_rx_desc *rd = 0;
|
||||
unsigned char bits;
|
||||
int len = 0;
|
||||
struct sk_buff *skb = 0;
|
||||
ib = (struct lance_init_block *) (dev->mem_start);
|
||||
volatile u16 *ib = (volatile u16 *)dev->mem_start;
|
||||
volatile u16 *rd;
|
||||
unsigned short bits;
|
||||
int entry, len;
|
||||
struct sk_buff *skb;
|
||||
|
||||
#ifdef TEST_HITS
|
||||
{
|
||||
@ -542,19 +560,22 @@ static int lance_rx(struct net_device *dev)
|
||||
printk("[");
|
||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
||||
if (i == lp->rx_new)
|
||||
printk("%s", ib->brx_ring[i].rmd1_bits &
|
||||
printk("%s", *lib_ptr(ib, brx_ring[i].rmd1,
|
||||
lp->type) &
|
||||
LE_R1_OWN ? "_" : "X");
|
||||
else
|
||||
printk("%s", ib->brx_ring[i].rmd1_bits &
|
||||
printk("%s", *lib_ptr(ib, brx_ring[i].rmd1,
|
||||
lp->type) &
|
||||
LE_R1_OWN ? "." : "1");
|
||||
}
|
||||
printk("]");
|
||||
}
|
||||
#endif
|
||||
|
||||
for (rd = &ib->brx_ring[lp->rx_new];
|
||||
!((bits = rd->rmd1_bits) & LE_R1_OWN);
|
||||
rd = &ib->brx_ring[lp->rx_new]) {
|
||||
for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type);
|
||||
!((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN);
|
||||
rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) {
|
||||
entry = lp->rx_new;
|
||||
|
||||
/* We got an incomplete frame? */
|
||||
if ((bits & LE_R1_POK) != LE_R1_POK) {
|
||||
@ -575,16 +596,18 @@ static int lance_rx(struct net_device *dev)
|
||||
if (bits & LE_R1_EOP)
|
||||
lp->stats.rx_errors++;
|
||||
} else {
|
||||
len = (rd->mblength & 0xfff) - 4;
|
||||
len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4;
|
||||
skb = dev_alloc_skb(len + 2);
|
||||
|
||||
if (skb == 0) {
|
||||
printk("%s: Memory squeeze, deferring packet.\n",
|
||||
dev->name);
|
||||
lp->stats.rx_dropped++;
|
||||
rd->mblength = 0;
|
||||
rd->rmd1_bits = LE_R1_OWN;
|
||||
lp->rx_new = (lp->rx_new + 1) & RX_RING_MOD_MASK;
|
||||
*rds_ptr(rd, mblength, lp->type) = 0;
|
||||
*rds_ptr(rd, rmd1, lp->type) =
|
||||
((lp->rx_buf_ptr_lnc[entry] >> 16) &
|
||||
0xff) | LE_R1_OWN;
|
||||
lp->rx_new = (entry + 1) & RX_RING_MOD_MASK;
|
||||
return 0;
|
||||
}
|
||||
lp->stats.rx_bytes += len;
|
||||
@ -594,8 +617,7 @@ static int lance_rx(struct net_device *dev)
|
||||
skb_put(skb, len); /* make room */
|
||||
|
||||
cp_from_buf(lp->type, skb->data,
|
||||
(char *)lp->rx_buf_ptr_cpu[lp->rx_new],
|
||||
len);
|
||||
(char *)lp->rx_buf_ptr_cpu[entry], len);
|
||||
|
||||
skb->protocol = eth_type_trans(skb, dev);
|
||||
netif_rx(skb);
|
||||
@ -604,10 +626,11 @@ static int lance_rx(struct net_device *dev)
|
||||
}
|
||||
|
||||
/* Return the packet to the pool */
|
||||
rd->mblength = 0;
|
||||
rd->length = -RX_BUFF_SIZE | 0xf000;
|
||||
rd->rmd1_bits = LE_R1_OWN;
|
||||
lp->rx_new = (lp->rx_new + 1) & RX_RING_MOD_MASK;
|
||||
*rds_ptr(rd, mblength, lp->type) = 0;
|
||||
*rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000;
|
||||
*rds_ptr(rd, rmd1, lp->type) =
|
||||
((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN;
|
||||
lp->rx_new = (entry + 1) & RX_RING_MOD_MASK;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
@ -615,24 +638,24 @@ static int lance_rx(struct net_device *dev)
|
||||
static void lance_tx(struct net_device *dev)
|
||||
{
|
||||
struct lance_private *lp = netdev_priv(dev);
|
||||
volatile struct lance_init_block *ib;
|
||||
volatile u16 *ib = (volatile u16 *)dev->mem_start;
|
||||
volatile struct lance_regs *ll = lp->ll;
|
||||
volatile struct lance_tx_desc *td;
|
||||
volatile u16 *td;
|
||||
int i, j;
|
||||
int status;
|
||||
ib = (struct lance_init_block *) (dev->mem_start);
|
||||
|
||||
j = lp->tx_old;
|
||||
|
||||
spin_lock(&lp->lock);
|
||||
|
||||
for (i = j; i != lp->tx_new; i = j) {
|
||||
td = &ib->btx_ring[i];
|
||||
td = lib_ptr(ib, btx_ring[i], lp->type);
|
||||
/* If we hit a packet not owned by us, stop */
|
||||
if (td->tmd1_bits & LE_T1_OWN)
|
||||
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN)
|
||||
break;
|
||||
|
||||
if (td->tmd1_bits & LE_T1_ERR) {
|
||||
status = td->misc;
|
||||
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) {
|
||||
status = *tds_ptr(td, misc, lp->type);
|
||||
|
||||
lp->stats.tx_errors++;
|
||||
if (status & LE_T3_RTY)
|
||||
@ -667,18 +690,19 @@ static void lance_tx(struct net_device *dev)
|
||||
init_restart_lance(lp);
|
||||
goto out;
|
||||
}
|
||||
} else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
|
||||
} else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) ==
|
||||
LE_T1_POK) {
|
||||
/*
|
||||
* So we don't count the packet more than once.
|
||||
*/
|
||||
td->tmd1_bits &= ~(LE_T1_POK);
|
||||
*tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK);
|
||||
|
||||
/* One collision before packet was sent. */
|
||||
if (td->tmd1_bits & LE_T1_EONE)
|
||||
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE)
|
||||
lp->stats.collisions++;
|
||||
|
||||
/* More than one collision, be optimistic. */
|
||||
if (td->tmd1_bits & LE_T1_EMORE)
|
||||
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE)
|
||||
lp->stats.collisions += 2;
|
||||
|
||||
lp->stats.tx_packets++;
|
||||
@ -752,7 +776,7 @@ struct net_device *last_dev = 0;
|
||||
|
||||
static int lance_open(struct net_device *dev)
|
||||
{
|
||||
volatile struct lance_init_block *ib = (struct lance_init_block *) (dev->mem_start);
|
||||
volatile u16 *ib = (volatile u16 *)dev->mem_start;
|
||||
struct lance_private *lp = netdev_priv(dev);
|
||||
volatile struct lance_regs *ll = lp->ll;
|
||||
int status = 0;
|
||||
@ -769,11 +793,11 @@ static int lance_open(struct net_device *dev)
|
||||
*
|
||||
* BTW it is common bug in all lance drivers! --ANK
|
||||
*/
|
||||
ib->mode = 0;
|
||||
ib->filter [0] = 0;
|
||||
ib->filter [2] = 0;
|
||||
ib->filter [4] = 0;
|
||||
ib->filter [6] = 0;
|
||||
*lib_ptr(ib, mode, lp->type) = 0;
|
||||
*lib_ptr(ib, filter[0], lp->type) = 0;
|
||||
*lib_ptr(ib, filter[1], lp->type) = 0;
|
||||
*lib_ptr(ib, filter[2], lp->type) = 0;
|
||||
*lib_ptr(ib, filter[3], lp->type) = 0;
|
||||
|
||||
lance_init_ring(dev);
|
||||
load_csrs(lp);
|
||||
@ -874,12 +898,10 @@ static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
{
|
||||
struct lance_private *lp = netdev_priv(dev);
|
||||
volatile struct lance_regs *ll = lp->ll;
|
||||
volatile struct lance_init_block *ib = (struct lance_init_block *) (dev->mem_start);
|
||||
int entry, skblen, len;
|
||||
volatile u16 *ib = (volatile u16 *)dev->mem_start;
|
||||
int entry, len;
|
||||
|
||||
skblen = skb->len;
|
||||
|
||||
len = skblen;
|
||||
len = skb->len;
|
||||
|
||||
if (len < ETH_ZLEN) {
|
||||
if (skb_padto(skb, ETH_ZLEN))
|
||||
@ -889,23 +911,17 @@ static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
|
||||
lp->stats.tx_bytes += len;
|
||||
|
||||
entry = lp->tx_new & TX_RING_MOD_MASK;
|
||||
ib->btx_ring[entry].length = (-len);
|
||||
ib->btx_ring[entry].misc = 0;
|
||||
entry = lp->tx_new;
|
||||
*lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len);
|
||||
*lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0;
|
||||
|
||||
cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data,
|
||||
skblen);
|
||||
|
||||
/* Clear the slack of the packet, do I need this? */
|
||||
/* For a firewall it's a good idea - AC */
|
||||
/*
|
||||
if (len != skblen)
|
||||
memset ((char *) &ib->tx_buf [entry][skblen], 0, (len - skblen) << 1);
|
||||
*/
|
||||
cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data, len);
|
||||
|
||||
/* Now, give the packet to the lance */
|
||||
ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN);
|
||||
lp->tx_new = (lp->tx_new + 1) & TX_RING_MOD_MASK;
|
||||
*lib_ptr(ib, btx_ring[entry].tmd1, lp->type) =
|
||||
((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) |
|
||||
(LE_T1_POK | LE_T1_OWN);
|
||||
lp->tx_new = (entry + 1) & TX_RING_MOD_MASK;
|
||||
|
||||
if (TX_BUFFS_AVAIL <= 0)
|
||||
netif_stop_queue(dev);
|
||||
@ -930,8 +946,8 @@ static struct net_device_stats *lance_get_stats(struct net_device *dev)
|
||||
|
||||
static void lance_load_multicast(struct net_device *dev)
|
||||
{
|
||||
volatile struct lance_init_block *ib = (struct lance_init_block *) (dev->mem_start);
|
||||
volatile u16 *mcast_table = (u16 *) & ib->filter;
|
||||
struct lance_private *lp = netdev_priv(dev);
|
||||
volatile u16 *ib = (volatile u16 *)dev->mem_start;
|
||||
struct dev_mc_list *dmi = dev->mc_list;
|
||||
char *addrs;
|
||||
int i;
|
||||
@ -939,17 +955,17 @@ static void lance_load_multicast(struct net_device *dev)
|
||||
|
||||
/* set all multicast bits */
|
||||
if (dev->flags & IFF_ALLMULTI) {
|
||||
ib->filter[0] = 0xffff;
|
||||
ib->filter[2] = 0xffff;
|
||||
ib->filter[4] = 0xffff;
|
||||
ib->filter[6] = 0xffff;
|
||||
*lib_ptr(ib, filter[0], lp->type) = 0xffff;
|
||||
*lib_ptr(ib, filter[1], lp->type) = 0xffff;
|
||||
*lib_ptr(ib, filter[2], lp->type) = 0xffff;
|
||||
*lib_ptr(ib, filter[3], lp->type) = 0xffff;
|
||||
return;
|
||||
}
|
||||
/* clear the multicast filter */
|
||||
ib->filter[0] = 0;
|
||||
ib->filter[2] = 0;
|
||||
ib->filter[4] = 0;
|
||||
ib->filter[6] = 0;
|
||||
*lib_ptr(ib, filter[0], lp->type) = 0;
|
||||
*lib_ptr(ib, filter[1], lp->type) = 0;
|
||||
*lib_ptr(ib, filter[2], lp->type) = 0;
|
||||
*lib_ptr(ib, filter[3], lp->type) = 0;
|
||||
|
||||
/* Add addresses */
|
||||
for (i = 0; i < dev->mc_count; i++) {
|
||||
@ -962,7 +978,7 @@ static void lance_load_multicast(struct net_device *dev)
|
||||
|
||||
crc = ether_crc_le(ETH_ALEN, addrs);
|
||||
crc = crc >> 26;
|
||||
mcast_table[2 * (crc >> 4)] |= 1 << (crc & 0xf);
|
||||
*lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf);
|
||||
}
|
||||
return;
|
||||
}
|
||||
@ -970,11 +986,9 @@ static void lance_load_multicast(struct net_device *dev)
|
||||
static void lance_set_multicast(struct net_device *dev)
|
||||
{
|
||||
struct lance_private *lp = netdev_priv(dev);
|
||||
volatile struct lance_init_block *ib;
|
||||
volatile u16 *ib = (volatile u16 *)dev->mem_start;
|
||||
volatile struct lance_regs *ll = lp->ll;
|
||||
|
||||
ib = (struct lance_init_block *) (dev->mem_start);
|
||||
|
||||
if (!netif_running(dev))
|
||||
return;
|
||||
|
||||
@ -992,9 +1006,9 @@ static void lance_set_multicast(struct net_device *dev)
|
||||
lance_init_ring(dev);
|
||||
|
||||
if (dev->flags & IFF_PROMISC) {
|
||||
ib->mode |= LE_MO_PROM;
|
||||
*lib_ptr(ib, mode, lp->type) |= LE_MO_PROM;
|
||||
} else {
|
||||
ib->mode &= ~LE_MO_PROM;
|
||||
*lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM;
|
||||
lance_load_multicast(dev);
|
||||
}
|
||||
load_csrs(lp);
|
||||
@ -1073,20 +1087,20 @@ static int __init dec_lance_init(const int type, const int slot)
|
||||
*/
|
||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
||||
lp->rx_buf_ptr_cpu[i] =
|
||||
(char *)(dev->mem_start + BUF_OFFSET_CPU +
|
||||
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
|
||||
2 * i * RX_BUFF_SIZE);
|
||||
lp->rx_buf_ptr_lnc[i] =
|
||||
(char *)(BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
|
||||
(BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
|
||||
}
|
||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
||||
lp->tx_buf_ptr_cpu[i] =
|
||||
(char *)(dev->mem_start + BUF_OFFSET_CPU +
|
||||
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
|
||||
2 * RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
2 * i * TX_BUFF_SIZE);
|
||||
lp->tx_buf_ptr_lnc[i] =
|
||||
(char *)(BUF_OFFSET_LNC +
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
(BUF_OFFSET_LNC +
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
}
|
||||
|
||||
/* Setup I/O ASIC LANCE DMA. */
|
||||
@ -1100,6 +1114,7 @@ static int __init dec_lance_init(const int type, const int slot)
|
||||
claim_tc_card(slot);
|
||||
|
||||
dev->mem_start = CKSEG1ADDR(get_tc_base_addr(slot));
|
||||
dev->mem_end = dev->mem_start + 0x100000;
|
||||
dev->base_addr = dev->mem_start + 0x100000;
|
||||
dev->irq = get_tc_irq_nr(slot);
|
||||
esar_base = dev->mem_start + 0x1c0002;
|
||||
@ -1110,7 +1125,7 @@ static int __init dec_lance_init(const int type, const int slot)
|
||||
(char *)(dev->mem_start + BUF_OFFSET_CPU +
|
||||
i * RX_BUFF_SIZE);
|
||||
lp->rx_buf_ptr_lnc[i] =
|
||||
(char *)(BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
|
||||
(BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
|
||||
}
|
||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
||||
lp->tx_buf_ptr_cpu[i] =
|
||||
@ -1118,9 +1133,9 @@ static int __init dec_lance_init(const int type, const int slot)
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
lp->tx_buf_ptr_lnc[i] =
|
||||
(char *)(BUF_OFFSET_LNC +
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
(BUF_OFFSET_LNC +
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
}
|
||||
|
||||
break;
|
||||
@ -1130,6 +1145,7 @@ static int __init dec_lance_init(const int type, const int slot)
|
||||
dev->irq = dec_interrupt[DEC_IRQ_LANCE];
|
||||
dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE);
|
||||
dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM);
|
||||
dev->mem_end = dev->mem_start + KN01_SLOT_SIZE;
|
||||
esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1);
|
||||
lp->dma_irq = -1;
|
||||
|
||||
@ -1138,20 +1154,20 @@ static int __init dec_lance_init(const int type, const int slot)
|
||||
*/
|
||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
||||
lp->rx_buf_ptr_cpu[i] =
|
||||
(char *)(dev->mem_start + BUF_OFFSET_CPU +
|
||||
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
|
||||
2 * i * RX_BUFF_SIZE);
|
||||
lp->rx_buf_ptr_lnc[i] =
|
||||
(char *)(BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
|
||||
(BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
|
||||
}
|
||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
||||
lp->tx_buf_ptr_cpu[i] =
|
||||
(char *)(dev->mem_start + BUF_OFFSET_CPU +
|
||||
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
|
||||
2 * RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
2 * i * TX_BUFF_SIZE);
|
||||
lp->tx_buf_ptr_lnc[i] =
|
||||
(char *)(BUF_OFFSET_LNC +
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
(BUF_OFFSET_LNC +
|
||||
RX_RING_SIZE * RX_BUFF_SIZE +
|
||||
i * TX_BUFF_SIZE);
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user