mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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684f4a4c4a
in drivers/net/eexpress.c:558, function unstick_cu()
while (!SCB_complete(rsst=scb_status(dev))) {
...
if (...)
printk(KERN_WARNING "%s: Reset timed out status %04x, retrying...\n",
dev->name,rsst);
}
but this will become
while (!((rsst = scb_status(dev) & 0x8000) != 0) ...
because of the macro:
#define SCB_complete(s) ((s&0x8000)!=0)
so rsst can only become either 0x8000 or 0, but in the latter case the
loop ends, I think the wrong timed out status is printed. This also
cleans up similar macros.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
180 lines
4.8 KiB
C
180 lines
4.8 KiB
C
/*
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* eexpress.h: Intel EtherExpress16 defines
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*/
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/*
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* EtherExpress card register addresses
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* as offsets from the base IO region (dev->base_addr)
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*/
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#define DATAPORT 0x0000
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#define WRITE_PTR 0x0002
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#define READ_PTR 0x0004
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#define SIGNAL_CA 0x0006
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#define SET_IRQ 0x0007
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#define SM_PTR 0x0008
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#define MEM_Dec 0x000a
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#define MEM_Ctrl 0x000b
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#define MEM_Page_Ctrl 0x000c
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#define Config 0x000d
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#define EEPROM_Ctrl 0x000e
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#define ID_PORT 0x000f
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#define MEM_ECtrl 0x000f
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/*
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* card register defines
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*/
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/* SET_IRQ */
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#define SIRQ_en 0x08
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#define SIRQ_dis 0x00
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/* EEPROM_Ctrl */
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#define EC_Clk 0x01
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#define EC_CS 0x02
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#define EC_Wr 0x04
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#define EC_Rd 0x08
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#define ASIC_RST 0x40
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#define i586_RST 0x80
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#define eeprom_delay() { udelay(40); }
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/*
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* i82586 Memory Configuration
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*/
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/* (System Configuration Pointer) System start up block, read after 586_RST */
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#define SCP_START 0xfff6
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/* Intermediate System Configuration Pointer */
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#define ISCP_START 0x0000
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/* System Command Block */
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#define SCB_START 0x0008
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/* Start of buffer region. Everything before this is used for control
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* structures and the CU configuration program. The memory layout is
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* determined in eexp_hw_probe(), once we know how much memory is
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* available on the card.
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*/
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#define TX_BUF_START 0x0100
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#define TX_BUF_SIZE ((24+ETH_FRAME_LEN+31)&~0x1f)
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#define RX_BUF_SIZE ((32+ETH_FRAME_LEN+31)&~0x1f)
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/*
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* SCB defines
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*/
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/* these functions take the SCB status word and test the relevant status bit */
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#define SCB_complete(s) (((s) & 0x8000) != 0)
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#define SCB_rxdframe(s) (((s) & 0x4000) != 0)
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#define SCB_CUdead(s) (((s) & 0x2000) != 0)
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#define SCB_RUdead(s) (((s) & 0x1000) != 0)
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#define SCB_ack(s) ((s) & 0xf000)
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/* Command unit status: 0=idle, 1=suspended, 2=active */
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#define SCB_CUstat(s) (((s)&0x0300)>>8)
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/* Receive unit status: 0=idle, 1=suspended, 2=out of resources, 4=ready */
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#define SCB_RUstat(s) (((s)&0x0070)>>4)
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/* SCB commands */
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#define SCB_CUnop 0x0000
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#define SCB_CUstart 0x0100
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#define SCB_CUresume 0x0200
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#define SCB_CUsuspend 0x0300
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#define SCB_CUabort 0x0400
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#define SCB_resetchip 0x0080
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#define SCB_RUnop 0x0000
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#define SCB_RUstart 0x0010
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#define SCB_RUresume 0x0020
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#define SCB_RUsuspend 0x0030
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#define SCB_RUabort 0x0040
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/*
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* Command block defines
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*/
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#define Stat_Done(s) (((s) & 0x8000) != 0)
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#define Stat_Busy(s) (((s) & 0x4000) != 0)
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#define Stat_OK(s) (((s) & 0x2000) != 0)
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#define Stat_Abort(s) (((s) & 0x1000) != 0)
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#define Stat_STFail (((s) & 0x0800) != 0)
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#define Stat_TNoCar(s) (((s) & 0x0400) != 0)
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#define Stat_TNoCTS(s) (((s) & 0x0200) != 0)
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#define Stat_TNoDMA(s) (((s) & 0x0100) != 0)
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#define Stat_TDefer(s) (((s) & 0x0080) != 0)
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#define Stat_TColl(s) (((s) & 0x0040) != 0)
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#define Stat_TXColl(s) (((s) & 0x0020) != 0)
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#define Stat_NoColl(s) ((s) & 0x000f)
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/* Cmd_END will end AFTER the command if this is the first
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* command block after an SCB_CUstart, but BEFORE the command
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* for all subsequent commands. Best strategy is to place
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* Cmd_INT on the last command in the sequence, followed by a
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* dummy Cmd_Nop with Cmd_END after this.
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*/
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#define Cmd_END 0x8000
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#define Cmd_SUS 0x4000
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#define Cmd_INT 0x2000
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#define Cmd_Nop 0x0000
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#define Cmd_SetAddr 0x0001
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#define Cmd_Config 0x0002
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#define Cmd_MCast 0x0003
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#define Cmd_Xmit 0x0004
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#define Cmd_TDR 0x0005
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#define Cmd_Dump 0x0006
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#define Cmd_Diag 0x0007
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/*
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* Frame Descriptor (Receive block) defines
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*/
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#define FD_Done(s) (((s) & 0x8000) != 0)
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#define FD_Busy(s) (((s) & 0x4000) != 0)
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#define FD_OK(s) (((s) & 0x2000) != 0)
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#define FD_CRC(s) (((s) & 0x0800) != 0)
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#define FD_Align(s) (((s) & 0x0400) != 0)
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#define FD_Resrc(s) (((s) & 0x0200) != 0)
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#define FD_DMA(s) (((s) & 0x0100) != 0)
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#define FD_Short(s) (((s) & 0x0080) != 0)
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#define FD_NoEOF(s) (((s) & 0x0040) != 0)
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struct rfd_header {
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volatile unsigned long flags;
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volatile unsigned short link;
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volatile unsigned short rbd_offset;
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volatile unsigned short dstaddr1;
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volatile unsigned short dstaddr2;
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volatile unsigned short dstaddr3;
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volatile unsigned short srcaddr1;
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volatile unsigned short srcaddr2;
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volatile unsigned short srcaddr3;
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volatile unsigned short length;
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/* This is actually a Receive Buffer Descriptor. The way we
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* arrange memory means that an RBD always follows the RFD that
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* points to it, so they might as well be in the same structure.
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*/
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volatile unsigned short actual_count;
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volatile unsigned short next_rbd;
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volatile unsigned short buf_addr1;
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volatile unsigned short buf_addr2;
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volatile unsigned short size;
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};
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/* Returned data from the Time Domain Reflectometer */
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#define TDR_LINKOK (1<<15)
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#define TDR_XCVRPROBLEM (1<<14)
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#define TDR_OPEN (1<<13)
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#define TDR_SHORT (1<<12)
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#define TDR_TIME 0x7ff
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