Update starfire and tulip net drivers to use new PCI API functions

pci_set_mwi and pci_clear_mwi.

drivers/net/starfire.c

@@ -96,9 +96,10 @@
 	LK1.3.5 (jgarzik)
 	- ethtool NWAY_RST, GLINK, [GS]MSGLVL support
 
-	LK1.3.6 (Ion Badulescu)
-	- Sparc64 support and fixes
-	- Better stats and error handling
+	LK1.3.6:
+	- Sparc64 support and fixes (Ion Badulescu)
+	- Better stats and error handling (Ion Badulescu)
+	- Use new pci_set_mwi() PCI API function (jgarzik)
 
 TODO:
 	- implement tx_timeout() properly
@@ -107,7 +108,7 @@
 
 #define DRV_NAME	"starfire"
 #define DRV_VERSION	"1.03+LK1.3.6"
-#define DRV_RELDATE	"March 6, 2002"
+#define DRV_RELDATE	"March 7, 2002"
 
 #include <linux/version.h>
 #include <linux/module.h>
@@ -617,8 +618,10 @@ static int __devinit starfire_init_one(struct pci_dev *pdev,
 	long ioaddr;
 	int drv_flags, io_size;
 	int boguscnt;
+#ifndef HAVE_PCI_SET_MWI
 	u16 cmd;
 	u8 cache;
+#endif
 
 /* when built into the kernel, we only print version if device is found */
 #ifndef MODULE
@@ -665,6 +668,9 @@ static int __devinit starfire_init_one(struct pci_dev *pdev,
 
 	pci_set_master(pdev);
 
+#ifdef HAVE_PCI_SET_MWI
+	pci_set_mwi(pdev);
+#else
 	/* enable MWI -- it vastly improves Rx performance on sparc64 */
 	pci_read_config_word(pdev, PCI_COMMAND, &cmd);
 	cmd |= PCI_COMMAND_INVALIDATE;
@@ -679,6 +685,7 @@ static int __devinit starfire_init_one(struct pci_dev *pdev,
 		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
 				      SMP_CACHE_BYTES >> 2);
 	}
+#endif
 
 #ifdef ZEROCOPY
 	/* Starfire can do SG and TCP/UDP checksumming */

drivers/net/tulip/ChangeLog

+2002-03-07  Jeff Garzik  <jgarzik@mandrakesoft.com>
+
+	* tulip_core (tulip_mwi_config): Use new PCI API functions
+	for enabling and disabled Memory-Write-Invalidate
+	PCI transaction.
+	Fix bugs in tulip MWI config also.
+
 2002-01-28  Stefan Rompf  <srompf@isg.de>,
             Jeff Garzik  <jgarzik@mandrakesoft.com>
 

drivers/net/tulip/tulip_core.c

@@ -15,8 +15,8 @@
 */
 
 #define DRV_NAME	"tulip"
-#define DRV_VERSION	"1.1.11"
-#define DRV_RELDATE	"Feb 08, 2002"
+#define DRV_VERSION	"1.1.12"
+#define DRV_RELDATE	"Mar 07, 2002"
 
 #include <linux/config.h>
 #include <linux/module.h>
@@ -1164,7 +1164,7 @@ static void __devinit tulip_mwi_config (struct pci_dev *pdev,
 {
 	struct tulip_private *tp = dev->priv;
 	u8 cache;
-	u16 pci_command, new_command;
+	u16 pci_command;
 	u32 csr0;
 
 	if (tulip_debug > 3)
@@ -1172,24 +1172,6 @@ static void __devinit tulip_mwi_config (struct pci_dev *pdev,
 
 	tp->csr0 = csr0 = 0;
 
-	/* check for sane cache line size. from acenic.c. */
-	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache);
-	if ((cache << 2) != SMP_CACHE_BYTES) {
-		printk(KERN_WARNING "%s: PCI cache line size set incorrectly "
-		       "(%i bytes) by BIOS/FW, correcting to %i\n",
-		       pdev->slot_name, (cache << 2), SMP_CACHE_BYTES);
-		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
-				      SMP_CACHE_BYTES >> 2);
-		udelay(5);
-	}
-
-	/* read cache line size again, hardware may not have accepted
-	 * our cache line size change
-	 */
-	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache);
-	if (!cache)
-		goto out;
-
 	/* if we have any cache line size at all, we can do MRM */
 	csr0 |= MRM;
 
@@ -1200,15 +1182,19 @@ static void __devinit tulip_mwi_config (struct pci_dev *pdev,
 	/* set or disable MWI in the standard PCI command bit.
 	 * Check for the case where  mwi is desired but not available
 	 */
-	pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
-	if (csr0 & MWI)	new_command = pci_command | PCI_COMMAND_INVALIDATE;
-	else		new_command = pci_command & ~PCI_COMMAND_INVALIDATE;
-	if (new_command != pci_command) {
-		pci_write_config_word(pdev, PCI_COMMAND, new_command);
-		udelay(5);
+	if (csr0 & MWI)	pci_set_mwi(pdev);
+	else		pci_clear_mwi(pdev);
+
+	/* read result from hardware (in case bit refused to enable) */
 	pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
 	if ((csr0 & MWI) && (!(pci_command & PCI_COMMAND_INVALIDATE)))
 		csr0 &= ~MWI;
+
+	/* if cache line size hardwired to zero, no MWI */
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache);
+	if ((csr0 & MWI) && (cache == 0)) {
+		csr0 &= ~MWI;
+		pci_clear_mwi(pdev);
 	}
 
 	/* assign per-cacheline-size cache alignment and
@@ -1225,20 +1211,29 @@ static void __devinit tulip_mwi_config (struct pci_dev *pdev,
 		csr0 |= MRL | (3 << CALShift) | (32 << BurstLenShift);
 		break;
 	default:
-		goto out;
+		cache = 0;
+		break;
 	}
 
-	tp->csr0 = csr0;
+	/* if we have a good cache line size, we by now have a good
+	 * csr0, so save it and exit
+	 */
+	if (cache)
 		goto out;
 
+	/* we don't have a good csr0 or cache line size, disable MWI */
 	if (csr0 & MWI) {
-		pci_command &= ~PCI_COMMAND_INVALIDATE;
-		pci_write_config_word(pdev, PCI_COMMAND, pci_command);
+		pci_clear_mwi(pdev);
 		csr0 &= ~MWI;
 	}
-	tp->csr0 = csr0 | (8 << BurstLenShift) | (1 << CALShift);
+
+	/* sane defaults for burst length and cache alignment
+	 * originally from de4x5 driver
+	 */
+	csr0 |= (8 << BurstLenShift) | (1 << CALShift);
 
 out:
+	tp->csr0 = csr0;
 	if (tulip_debug > 2)
 		printk(KERN_DEBUG "%s: MWI config cacheline=%d, csr0=%08x\n",
 		       pdev->slot_name, cache, csr0);