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-rw-r--r--drivers/net/fddi/Kconfig19
-rw-r--r--drivers/net/fddi/defxx.c60
-rw-r--r--drivers/net/fddi/defxx.h3
3 files changed, 25 insertions, 57 deletions
diff --git a/drivers/net/fddi/Kconfig b/drivers/net/fddi/Kconfig
index f99c1048c97e..846bf41c2717 100644
--- a/drivers/net/fddi/Kconfig
+++ b/drivers/net/fddi/Kconfig
@@ -38,25 +38,6 @@ config DEFXX
To compile this driver as a module, choose M here: the module
will be called defxx. If unsure, say N.
-config DEFXX_MMIO
- bool
- prompt "Use MMIO instead of IOP" if PCI || EISA
- depends on DEFXX
- default n if EISA
- default y
- help
- This instructs the driver to use EISA or PCI memory-mapped I/O
- (MMIO) as appropriate instead of programmed I/O ports (IOP).
- Enabling this gives an improvement in processing time in parts
- of the driver, but it requires a memory window to be configured
- for EISA (DEFEA) adapters that may not always be available.
- Conversely some PCIe host bridges do not support IOP, so MMIO
- may be required to access PCI (DEFPA) adapters on downstream PCI
- buses with some systems. TURBOchannel does not have the concept
- of I/O ports, so MMIO is always used for these (DEFTA) adapters.
-
- If unsure, say N.
-
config SKFP
tristate "SysKonnect FDDI PCI support"
depends on FDDI && PCI
diff --git a/drivers/net/fddi/defxx.c b/drivers/net/fddi/defxx.c
index c62d4b539e24..7d733a6204e2 100644
--- a/drivers/net/fddi/defxx.c
+++ b/drivers/net/fddi/defxx.c
@@ -197,6 +197,7 @@
* 23 Oct 2006 macro Big-endian host support.
* 14 Dec 2006 macro TURBOchannel support.
* 01 Jul 2014 macro Fixes for DMA on 64-bit hosts.
+ * 10 Mar 2021 macro Dynamic MMIO vs port I/O.
*/
/* Include files */
@@ -225,8 +226,8 @@
/* Version information string should be updated prior to each new release! */
#define DRV_NAME "defxx"
-#define DRV_VERSION "v1.11"
-#define DRV_RELDATE "2014/07/01"
+#define DRV_VERSION "v1.12"
+#define DRV_RELDATE "2021/03/10"
static const char version[] =
DRV_NAME ": " DRV_VERSION " " DRV_RELDATE
@@ -253,10 +254,10 @@ static const char version[] =
#define DFX_BUS_TC(dev) 0
#endif
-#ifdef CONFIG_DEFXX_MMIO
-#define DFX_MMIO 1
+#if defined(CONFIG_EISA) || defined(CONFIG_PCI)
+#define dfx_use_mmio bp->mmio
#else
-#define DFX_MMIO 0
+#define dfx_use_mmio true
#endif
/* Define module-wide (static) routines */
@@ -374,8 +375,6 @@ static inline void dfx_outl(DFX_board_t *bp, int offset, u32 data)
static void dfx_port_write_long(DFX_board_t *bp, int offset, u32 data)
{
struct device __maybe_unused *bdev = bp->bus_dev;
- int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
if (dfx_use_mmio)
dfx_writel(bp, offset, data);
@@ -398,8 +397,6 @@ static inline void dfx_inl(DFX_board_t *bp, int offset, u32 *data)
static void dfx_port_read_long(DFX_board_t *bp, int offset, u32 *data)
{
struct device __maybe_unused *bdev = bp->bus_dev;
- int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
if (dfx_use_mmio)
dfx_readl(bp, offset, data);
@@ -421,7 +418,7 @@ static void dfx_port_read_long(DFX_board_t *bp, int offset, u32 *data)
* None
*
* Arguments:
- * bdev - pointer to device information
+ * bp - pointer to board information
* bar_start - pointer to store the start addresses
* bar_len - pointer to store the lengths of the areas
*
@@ -431,13 +428,13 @@ static void dfx_port_read_long(DFX_board_t *bp, int offset, u32 *data)
* Side Effects:
* None
*/
-static void dfx_get_bars(struct device *bdev,
+static void dfx_get_bars(DFX_board_t *bp,
resource_size_t *bar_start, resource_size_t *bar_len)
{
+ struct device *bdev = bp->bus_dev;
int dfx_bus_pci = dev_is_pci(bdev);
int dfx_bus_eisa = DFX_BUS_EISA(bdev);
int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
if (dfx_bus_pci) {
int num = dfx_use_mmio ? 0 : 1;
@@ -495,18 +492,6 @@ static const struct net_device_ops dfx_netdev_ops = {
.ndo_set_mac_address = dfx_ctl_set_mac_address,
};
-static void dfx_register_res_alloc_err(const char *print_name, bool mmio,
- bool eisa)
-{
- pr_err("%s: Cannot use %s, no address set, aborting\n",
- print_name, mmio ? "MMIO" : "I/O");
- pr_err("%s: Recompile driver with \"CONFIG_DEFXX_MMIO=%c\"\n",
- print_name, mmio ? 'n' : 'y');
- if (eisa && mmio)
- pr_err("%s: Or run ECU and set adapter's MMIO location\n",
- print_name);
-}
-
static void dfx_register_res_err(const char *print_name, bool mmio,
unsigned long start, unsigned long len)
{
@@ -547,8 +532,6 @@ static int dfx_register(struct device *bdev)
static int version_disp;
int dfx_bus_pci = dev_is_pci(bdev);
int dfx_bus_eisa = DFX_BUS_EISA(bdev);
- int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
const char *print_name = dev_name(bdev);
struct net_device *dev;
DFX_board_t *bp; /* board pointer */
@@ -586,19 +569,24 @@ static int dfx_register(struct device *bdev)
bp->bus_dev = bdev;
dev_set_drvdata(bdev, dev);
- dfx_get_bars(bdev, bar_start, bar_len);
+ bp->mmio = true;
+
+ dfx_get_bars(bp, bar_start, bar_len);
if (bar_len[0] == 0 ||
(dfx_bus_eisa && dfx_use_mmio && bar_start[0] == 0)) {
- dfx_register_res_alloc_err(print_name, dfx_use_mmio,
- dfx_bus_eisa);
- err = -ENXIO;
- goto err_out_disable;
+ bp->mmio = false;
+ dfx_get_bars(bp, bar_start, bar_len);
}
- if (dfx_use_mmio)
+ if (dfx_use_mmio) {
region = request_mem_region(bar_start[0], bar_len[0],
print_name);
- else
+ if (!region && (dfx_bus_eisa || dfx_bus_pci)) {
+ bp->mmio = false;
+ dfx_get_bars(bp, bar_start, bar_len);
+ }
+ }
+ if (!dfx_use_mmio)
region = request_region(bar_start[0], bar_len[0], print_name);
if (!region) {
dfx_register_res_err(print_name, dfx_use_mmio,
@@ -734,7 +722,6 @@ static void dfx_bus_init(struct net_device *dev)
int dfx_bus_pci = dev_is_pci(bdev);
int dfx_bus_eisa = DFX_BUS_EISA(bdev);
int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
u8 val;
DBG_printk("In dfx_bus_init...\n");
@@ -1054,7 +1041,6 @@ static int dfx_driver_init(struct net_device *dev, const char *print_name,
int dfx_bus_pci = dev_is_pci(bdev);
int dfx_bus_eisa = DFX_BUS_EISA(bdev);
int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
int alloc_size; /* total buffer size needed */
char *top_v, *curr_v; /* virtual addrs into memory block */
dma_addr_t top_p, curr_p; /* physical addrs into memory block */
@@ -3708,8 +3694,6 @@ static void dfx_unregister(struct device *bdev)
struct net_device *dev = dev_get_drvdata(bdev);
DFX_board_t *bp = netdev_priv(dev);
int dfx_bus_pci = dev_is_pci(bdev);
- int dfx_bus_tc = DFX_BUS_TC(bdev);
- int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
resource_size_t bar_start[3] = {0}; /* pointers to ports */
resource_size_t bar_len[3] = {0}; /* resource lengths */
int alloc_size; /* total buffer size used */
@@ -3729,7 +3713,7 @@ static void dfx_unregister(struct device *bdev)
dfx_bus_uninit(dev);
- dfx_get_bars(bdev, bar_start, bar_len);
+ dfx_get_bars(bp, bar_start, bar_len);
if (bar_start[2] != 0)
release_region(bar_start[2], bar_len[2]);
if (bar_start[1] != 0)
diff --git a/drivers/net/fddi/defxx.h b/drivers/net/fddi/defxx.h
index 4c31d31e0a3f..8193713e12db 100644
--- a/drivers/net/fddi/defxx.h
+++ b/drivers/net/fddi/defxx.h
@@ -27,6 +27,7 @@
* 04 Aug 2003 macro Converted to the DMA API.
* 23 Oct 2006 macro Big-endian host support.
* 14 Dec 2006 macro TURBOchannel support.
+ * 10 Mar 2021 macro Dynamic MMIO vs port I/O.
*/
#ifndef _DEFXX_H_
@@ -1776,6 +1777,8 @@ typedef struct DFX_board_tag
int port;
} base; /* base address */
struct device *bus_dev;
+ /* Whether to use MMIO or port I/O. */
+ bool mmio;
u32 full_duplex_enb; /* FDDI Full Duplex enable (1 == on, 2 == off) */
u32 req_ttrt; /* requested TTRT value (in 80ns units) */
u32 burst_size; /* adapter burst size (enumerated) */
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2025-01-02 00:07:32 +0000