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Add a workaround for BCM57780 to prevent device timeout. This change prevent 

L1PM feature do wrongy. Tested with Dell latitude 2120.
This commit is contained in:
msaitoh 2017-04-12 06:22:16 +00:00
parent 44790b71a1
commit 92a8537b4b
2 changed files with 51 additions and 3 deletions
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31
sys/dev/pci/if_bge.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_bge.c,v 1.303 2017/04/12 06:04:34 msaitoh Exp $ */
/* $NetBSD: if_bge.c,v 1.304 2017/04/12 06:22:16 msaitoh Exp $ */
/*
* Copyright (c) 2001 Wind River Systems
@ -79,7 +79,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_bge.c,v 1.303 2017/04/12 06:04:34 msaitoh Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_bge.c,v 1.304 2017/04/12 06:22:16 msaitoh Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -4257,6 +4257,13 @@ bge_reset(struct bge_softc *sc)
*/
bge_writemem_ind(sc, BGE_SRAM_FW_MB, BGE_SRAM_FW_MB_MAGIC);
if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57780) {
val = CSR_READ_4(sc, BGE_PCIE_LINKCTL);
val = (val & ~BGE_PCIE_LINKCTL_L1_PLL_PDEN)
| BGE_PCIE_LINKCTL_L1_PLL_PDDIS;
CSR_WRITE_4(sc, BGE_PCIE_LINKCTL, val);
}
/* 5718 reset step 6, 57XX step 7 */
reset = BGE_MISCCFG_RESET_CORE_CLOCKS | BGE_32BITTIME_66MHZ;
/*
@ -5510,6 +5517,26 @@ bge_init(struct ifnet *ifp)
CSR_WRITE_4(sc, BGE_CPMU_HST_ACC, reg);
}
if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57780) {
reg = CSR_READ_4(sc, BGE_PCIE_PWRMNG_THRESH);
reg = (reg & ~BGE_PCIE_PWRMNG_L1THRESH_MASK)
| BGE_PCIE_PWRMNG_L1THRESH_4MS
| BGE_PCIE_PWRMNG_EXTASPMTMR_EN;
CSR_WRITE_4(sc, BGE_PCIE_PWRMNG_THRESH, reg);
reg = CSR_READ_4(sc, BGE_PCIE_EIDLE_DELAY);
reg = (reg & ~BGE_PCIE_EIDLE_DELAY_MASK)
| BGE_PCIE_EIDLE_DELAY_13CLK;
CSR_WRITE_4(sc, BGE_PCIE_EIDLE_DELAY, reg);
/* XXX clear correctable error count */
reg = CSR_READ_4(sc, BGE_PCIE_LINKCTL);
reg = (reg & ~BGE_PCIE_LINKCTL_L1_PLL_PDEN)
| BGE_PCIE_LINKCTL_L1_PLL_PDDIS;
CSR_WRITE_4(sc, BGE_PCIE_LINKCTL, reg);
}
bge_sig_post_reset(sc, BGE_RESET_START);
bge_chipinit(sc);

23
sys/dev/pci/if_bgereg.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_bgereg.h,v 1.91 2015/05/17 12:06:26 msaitoh Exp $ */
/* $NetBSD: if_bgereg.h,v 1.92 2017/04/12 06:22:16 msaitoh Exp $ */
/*
* Copyright (c) 2001 Wind River Systems
* Copyright (c) 1997, 1998, 1999, 2001
@ -1945,6 +1945,27 @@
#define BGE_TLP_PHYCTL5_DIS_L2CLKREQ 0x80000000
#define BGE_TLP_DATA_FIFO_PROTECT 0x02000000
/*
* PCIe L1 config registers?
*/
#define BGE_PCIE_PWRMNG_THRESH 0x7d28
#define BGE_PCIE_LINKCTL 0x7d54
#define BGE_PCIE_EIDLE_DELAY 0x7e70
/* PCIe Power Management register */
#define BGE_PCIE_PWRMNG_L1THRESH_MASK 0x0000ff00
#define BGE_PCIE_PWRMNG_L1THRESH_4MS 0x0000ff00
#define BGE_PCIE_PWRMNG_EXTASPMTMR_EN 0x01000000
/* PCIe link control register */
#define BGE_PCIE_LINKCTL_L1_PLL_PDEN 0x00000008
#define BGE_PCIE_LINKCTL_L1_PLL_PDDIS 0x00000080
/* PCIe Enhanced idle delay register */
#define BGE_PCIE_EIDLE_DELAY_MASK 0x0000001f
#define BGE_PCIE_EIDLE_DELAY_13CLK 0x0000000c
/*
* PHY Test Control Register
* Applicable to BCM5721 and BCM5751 only