diff options
| author | John W. Linville <linville@tuxdriver.com> | 2005-11-07 00:58:08 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 07:53:25 -0800 |
| commit | 900fd17dd01d2c99dfd1ec0b53a860894a2673ee (patch) | |
| tree | fcd447fc10d1a58c11854e29077417c329afebe7 /drivers | |
| parent | 35b306743d17cdd31357e5de9ce6c549e5d6756e (diff) | |
[PATCH] 3c59x: enable use of memory-mapped PCI I/O
Add capability for 3c59x driver to use memory-mapped PCI I/O resources.
This may improve performance for those devices so equipped. This will be
the default behaviour for IS_CYCLONE and IS_TORNADO devices. Additionally,
it can be enabled/disabled individually for up to MAX_UNITS number of
devices via the use_mmio module option or for all units via the
global_use_mmio option. The use_mmio option overrides the global_use_mmio
option for those devices specified.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/3c59x.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c index 413b82c5994..c1ee8efc9d5 100644 --- a/drivers/net/3c59x.c +++ b/drivers/net/3c59x.c @@ -908,9 +908,11 @@ static int full_duplex[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 }; static int hw_checksums[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 }; static int flow_ctrl[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 }; static int enable_wol[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 }; +static int use_mmio[MAX_UNITS] = {[0 ... MAX_UNITS-1] = -1 }; static int global_options = -1; static int global_full_duplex = -1; static int global_enable_wol = -1; +static int global_use_mmio = -1; /* #define dev_alloc_skb dev_alloc_skb_debug */ @@ -935,6 +937,8 @@ module_param(compaq_ioaddr, int, 0); module_param(compaq_irq, int, 0); module_param(compaq_device_id, int, 0); module_param(watchdog, int, 0); +module_param(global_use_mmio, int, 0); +module_param_array(use_mmio, int, NULL, 0); MODULE_PARM_DESC(debug, "3c59x debug level (0-6)"); MODULE_PARM_DESC(options, "3c59x: Bits 0-3: media type, bit 4: bus mastering, bit 9: full duplex"); MODULE_PARM_DESC(global_options, "3c59x: same as options, but applies to all NICs if options is unset"); @@ -950,6 +954,8 @@ MODULE_PARM_DESC(compaq_ioaddr, "3c59x PCI I/O base address (Compaq BIOS problem MODULE_PARM_DESC(compaq_irq, "3c59x PCI IRQ number (Compaq BIOS problem workaround)"); MODULE_PARM_DESC(compaq_device_id, "3c59x PCI device ID (Compaq BIOS problem workaround)"); MODULE_PARM_DESC(watchdog, "3c59x transmit timeout in milliseconds"); +MODULE_PARM_DESC(global_use_mmio, "3c59x: same as use_mmio, but applies to all NICs if options is unset"); +MODULE_PARM_DESC(use_mmio, "3c59x: use memory-mapped PCI I/O resource (0-1)"); #ifdef CONFIG_NET_POLL_CONTROLLER static void poll_vortex(struct net_device *dev) @@ -1109,15 +1115,32 @@ static int __init vortex_eisa_init (void) static int __devinit vortex_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) { - int rc; + int rc, unit, pci_bar; + struct vortex_chip_info *vci; + void __iomem *ioaddr; /* wake up and enable device */ rc = pci_enable_device (pdev); if (rc < 0) goto out; - rc = vortex_probe1 (&pdev->dev, pci_iomap(pdev, 0, 0), - pdev->irq, ent->driver_data, vortex_cards_found); + unit = vortex_cards_found; + + if (global_use_mmio < 0 && (unit >= MAX_UNITS || use_mmio[unit] < 0)) { + /* Determine the default if the user didn't override us */ + vci = &vortex_info_tbl[ent->driver_data]; + pci_bar = vci->drv_flags & (IS_CYCLONE | IS_TORNADO) ? 1 : 0; + } else if (unit < MAX_UNITS && use_mmio[unit] >= 0) + pci_bar = use_mmio[unit] ? 1 : 0; + else + pci_bar = global_use_mmio ? 1 : 0; + + ioaddr = pci_iomap(pdev, pci_bar, 0); + if (!ioaddr) /* If mapping fails, fall-back to BAR 0... */ + ioaddr = pci_iomap(pdev, 0, 0); + + rc = vortex_probe1(&pdev->dev, ioaddr, pdev->irq, + ent->driver_data, unit); if (rc < 0) { pci_disable_device (pdev); goto out; |