Messages in this thread Patch in this message | | | Date | Wed, 17 Nov 2004 15:15:53 -0500 | From | "John W. Linville" <> | Subject | [patch 2.4.28-rc3] tulip: make tulip_stop_rxtx() wait for DMA to fully stop |
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tulip_stop_rxtx() doesn't wait for DMA to fully stop like the function call name implies.
Acked-by: Grant Grundler <grant.grundler@hp.com> Acked-by: Charlie Brett <charlie.brett@hp.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> --- This was submitted through my employer -- I am not the original author of this patch. However, I passed it by Jeff Garizk and he expressed interest in having it upstream.
drivers/net/tulip/21142.c | 2 +- drivers/net/tulip/eeprom.c | 1 + drivers/net/tulip/interrupt.c | 2 +- drivers/net/tulip/media.c | 1 + drivers/net/tulip/pnic.c | 1 + drivers/net/tulip/pnic2.c | 2 +- drivers/net/tulip/timer.c | 1 + drivers/net/tulip/tulip.h | 15 ++++++++++++++- drivers/net/tulip/tulip_core.c | 2 +- 9 files changed, 22 insertions(+), 5 deletions(-)
--- tulip_stop_rxtx-2.4/drivers/net/tulip/tulip_core.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/tulip_core.c @@ -20,8 +20,8 @@ #include <linux/config.h> #include <linux/module.h> -#include "tulip.h" #include <linux/pci.h> +#include "tulip.h" #include <linux/init.h> #include <linux/etherdevice.h> #include <linux/delay.h> --- tulip_stop_rxtx-2.4/drivers/net/tulip/media.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/media.c @@ -18,6 +18,7 @@ #include <linux/mii.h> #include <linux/init.h> #include <linux/delay.h> +#include <linux/pci.h> #include "tulip.h" --- tulip_stop_rxtx-2.4/drivers/net/tulip/21142.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/21142.c @@ -14,8 +14,8 @@ */ -#include "tulip.h" #include <linux/pci.h> +#include "tulip.h" #include <linux/delay.h> --- tulip_stop_rxtx-2.4/drivers/net/tulip/timer.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/timer.c @@ -14,6 +14,7 @@ */ +#include <linux/pci.h> #include "tulip.h" --- tulip_stop_rxtx-2.4/drivers/net/tulip/tulip.h.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/tulip.h @@ -146,6 +146,9 @@ enum status_bits { TxIntr = 0x01, }; +/* bit mask for CSR5 TX/RX process state */ +#define CSR5_TS 0x00700000 +#define CSR5_RS 0x000e0000 enum tulip_mode_bits { TxThreshold = (1 << 22), @@ -484,9 +487,19 @@ static inline void tulip_stop_rxtx(struc u32 csr6 = inl(ioaddr + CSR6); if (csr6 & RxTx) { + unsigned i=1300/10; outl(csr6 & ~RxTx, ioaddr + CSR6); barrier(); - (void) inl(ioaddr + CSR6); /* mmio sync */ + /* wait until in-flight frame completes. + * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin) + * Typically expect this loop to end in < 50us on 100BT. + */ + while (--i && (inl(ioaddr + CSR5) & (CSR5_TS|CSR5_RS))) + udelay(10); + + if (!i) + printk (KERN_DEBUG "%s: tulip_stop_rxtx() failed\n", + tp->pdev->slot_name); } } --- tulip_stop_rxtx-2.4/drivers/net/tulip/pnic.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/pnic.c @@ -15,6 +15,7 @@ */ #include <linux/kernel.h> +#include <linux/pci.h> #include "tulip.h" --- tulip_stop_rxtx-2.4/drivers/net/tulip/pnic2.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/pnic2.c @@ -76,8 +76,8 @@ -#include "tulip.h" #include <linux/pci.h> +#include "tulip.h" #include <linux/delay.h> --- tulip_stop_rxtx-2.4/drivers/net/tulip/eeprom.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/eeprom.c @@ -14,6 +14,7 @@ */ +#include <linux/pci.h> #include "tulip.h" #include <linux/init.h> #include <asm/unaligned.h> --- tulip_stop_rxtx-2.4/drivers/net/tulip/interrupt.c.orig +++ tulip_stop_rxtx-2.4/drivers/net/tulip/interrupt.c @@ -14,10 +14,10 @@ */ +#include <linux/pci.h> #include "tulip.h" #include <linux/config.h> #include <linux/etherdevice.h> -#include <linux/pci.h> int tulip_rx_copybreak; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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