| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 22 Feb 2008 19:55:15 +0900
From: Magnus Damm <magnus.damm@...il.com>
To: netdev@...r.kernel.org
Cc: Magnus Damm <magnus.damm@...il.com>, lethal@...ux-sh.org,
nico@....org, akpm@...ux-foundation.org
Subject: [PATCH 02/04] smc91x: introduce platform data flags V2
This patch introduces struct smc91x_platdata and modifies the driver so
bus width is checked during run time using SMC_nBIT() instead of
SMC_CAN_USE_nBIT.
V2 keeps static configuration lean using SMC_DYNAMIC_BUS_CONFIG.
Signed-off-by: Magnus Damm <damm@...l.co.jp>
---
drivers/net/smc91x.c | 34 ++++++++++++++++++++++++----
drivers/net/smc91x.h | 57 +++++++++++++++++++++++++++++-------------------
include/linux/smc91x.h | 13 ++++++++++
3 files changed, 77 insertions(+), 27 deletions(-)
--- 0002/drivers/net/smc91x.c
+++ work/drivers/net/smc91x.c 2008-02-22 15:11:44.000000000 +0900
@@ -1997,6 +1997,8 @@ err_out:
static int smc_enable_device(struct platform_device *pdev)
{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct smc_local *lp = netdev_priv(ndev);
unsigned long flags;
unsigned char ecor, ecsr;
void __iomem *addr;
@@ -2039,7 +2041,7 @@ static int smc_enable_device(struct plat
* Set the appropriate byte/word mode.
*/
ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8;
- if (!SMC_CAN_USE_16BIT)
+ if (!SMC_16BIT(lp))
ecsr |= ECSR_IOIS8;
writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT));
local_irq_restore(flags);
@@ -2124,10 +2126,11 @@ static void smc_release_datacs(struct pl
*/
static int smc_drv_probe(struct platform_device *pdev)
{
+ struct smc91x_platdata *pd = pdev->dev.platform_data;
+ struct smc_local *lp;
struct net_device *ndev;
struct resource *res, *ires;
unsigned int __iomem *addr;
- unsigned long irq_flags = SMC_IRQ_FLAGS;
int ret;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
@@ -2152,6 +2155,27 @@ static int smc_drv_probe(struct platform
}
SET_NETDEV_DEV(ndev, &pdev->dev);
+ /* get configuration from platform data, only allow use of
+ * bus width if both SMC_CAN_USE_xxx and SMC91X_USE_xxx are set.
+ */
+
+ lp = netdev_priv(ndev);
+ lp->cfg.irq_flags = SMC_IRQ_FLAGS;
+
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+ if (pd)
+ memcpy(&lp->cfg, pd, sizeof(lp->cfg));
+ else {
+ lp->cfg.flags = SMC91X_USE_8BIT;
+ lp->cfg.flags |= SMC91X_USE_16BIT;
+ lp->cfg.flags |= SMC91X_USE_32BIT;
+ }
+
+ lp->cfg.flags &= ~(SMC_CAN_USE_8BIT ? 0 : SMC91X_USE_8BIT);
+ lp->cfg.flags &= ~(SMC_CAN_USE_16BIT ? 0 : SMC91X_USE_16BIT);
+ lp->cfg.flags &= ~(SMC_CAN_USE_32BIT ? 0 : SMC91X_USE_32BIT);
+#endif
+
ndev->dma = (unsigned char)-1;
ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
@@ -2162,7 +2186,7 @@ static int smc_drv_probe(struct platform
ndev->irq = ires->start;
if (SMC_IRQ_FLAGS == -1)
- irq_flags = ires->flags & IRQF_TRIGGER_MASK;
+ lp->cfg.irq_flags = ires->flags & IRQF_TRIGGER_MASK;
ret = smc_request_attrib(pdev);
if (ret)
@@ -2170,6 +2194,7 @@ static int smc_drv_probe(struct platform
#if defined(CONFIG_SA1100_ASSABET)
NCR_0 |= NCR_ENET_OSC_EN;
#endif
+ platform_set_drvdata(pdev, ndev);
ret = smc_enable_device(pdev);
if (ret)
goto out_release_attrib;
@@ -2188,8 +2213,7 @@ static int smc_drv_probe(struct platform
}
#endif
- platform_set_drvdata(pdev, ndev);
- ret = smc_probe(ndev, addr, irq_flags);
+ ret = smc_probe(ndev, addr, lp->cfg.irq_flags);
if (ret != 0)
goto out_iounmap;
--- 0002/drivers/net/smc91x.h
+++ work/drivers/net/smc91x.h 2008-02-22 15:01:30.000000000 +0900
@@ -34,6 +34,7 @@
#ifndef _SMC91X_H_
#define _SMC91X_H_
+#include <linux/smc91x.h>
/*
* Define your architecture specific bus configuration parameters here.
@@ -481,6 +482,7 @@ static inline void LPD7_SMC_outsw (unsig
#define RPC_LSA_DEFAULT RPC_LED_100_10
#define RPC_LSB_DEFAULT RPC_LED_TX_RX
+#define SMC_DYNAMIC_BUS_CONFIG
#endif
@@ -526,8 +528,19 @@ struct smc_local {
#endif
void __iomem *base;
void __iomem *datacs;
+
+ struct smc91x_platdata cfg;
};
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+#define SMC_8BIT(p) (((p)->cfg.flags & SMC91X_USE_8BIT) && SMC_CAN_USE_8BIT)
+#define SMC_16BIT(p) (((p)->cfg.flags & SMC91X_USE_16BIT) && SMC_CAN_USE_16BIT)
+#define SMC_32BIT(p) (((p)->cfg.flags & SMC91X_USE_32BIT) && SMC_CAN_USE_32BIT)
+#else
+#define SMC_8BIT(p) SMC_CAN_USE_8BIT
+#define SMC_16BIT(p) SMC_CAN_USE_16BIT
+#define SMC_32BIT(p) SMC_CAN_USE_32BIT
+#endif
#ifdef SMC_USE_PXA_DMA
/*
@@ -1108,41 +1121,41 @@ static const char * chip_ids[ 16 ] = {
*
* Enforce it on any 32-bit capable setup for now.
*/
-#define SMC_MUST_ALIGN_WRITE SMC_CAN_USE_32BIT
+#define SMC_MUST_ALIGN_WRITE(lp) SMC_32BIT(lp)
#define SMC_GET_PN(lp) \
- (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, PN_REG(lp))) \
+ (SMC_8BIT(lp) ? (SMC_inb(ioaddr, PN_REG(lp))) \
: (SMC_inw(ioaddr, PN_REG(lp)) & 0xFF))
#define SMC_SET_PN(lp, x) \
do { \
- if (SMC_MUST_ALIGN_WRITE) \
+ if (SMC_MUST_ALIGN_WRITE(lp)) \
SMC_outl((x)<<16, ioaddr, SMC_REG(lp, 0, 2)); \
- else if (SMC_CAN_USE_8BIT) \
+ else if (SMC_8BIT(lp)) \
SMC_outb(x, ioaddr, PN_REG(lp)); \
else \
SMC_outw(x, ioaddr, PN_REG(lp)); \
} while (0)
#define SMC_GET_AR(lp) \
- (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, AR_REG(lp))) \
+ (SMC_8BIT(lp) ? (SMC_inb(ioaddr, AR_REG(lp))) \
: (SMC_inw(ioaddr, PN_REG(lp)) >> 8))
#define SMC_GET_TXFIFO(lp) \
- (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, TXFIFO_REG(lp))) \
+ (SMC_8BIT(lp) ? (SMC_inb(ioaddr, TXFIFO_REG(lp))) \
: (SMC_inw(ioaddr, TXFIFO_REG(lp)) & 0xFF))
#define SMC_GET_RXFIFO(lp) \
- (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, RXFIFO_REG(lp))) \
+ (SMC_8BIT(lp) ? (SMC_inb(ioaddr, RXFIFO_REG(lp))) \
: (SMC_inw(ioaddr, TXFIFO_REG(lp)) >> 8))
#define SMC_GET_INT(lp) \
- (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, INT_REG(lp))) \
+ (SMC_8BIT(lp) ? (SMC_inb(ioaddr, INT_REG(lp))) \
: (SMC_inw(ioaddr, INT_REG(lp)) & 0xFF))
#define SMC_ACK_INT(lp, x) \
do { \
- if (SMC_CAN_USE_8BIT) \
+ if (SMC_8BIT(lp)) \
SMC_outb(x, ioaddr, INT_REG(lp)); \
else { \
unsigned long __flags; \
@@ -1155,12 +1168,12 @@ static const char * chip_ids[ 16 ] = {
} while (0)
#define SMC_GET_INT_MASK(lp) \
- (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, IM_REG(lp))) \
+ (SMC_8BIT(lp) ? (SMC_inb(ioaddr, IM_REG(lp))) \
: (SMC_inw(ioaddr, INT_REG(lp)) >> 8))
#define SMC_SET_INT_MASK(lp, x) \
do { \
- if (SMC_CAN_USE_8BIT) \
+ if (SMC_8BIT(lp)) \
SMC_outb(x, ioaddr, IM_REG(lp)); \
else \
SMC_outw((x) << 8, ioaddr, INT_REG(lp)); \
@@ -1170,7 +1183,7 @@ static const char * chip_ids[ 16 ] = {
#define SMC_SELECT_BANK(lp, x) \
do { \
- if (SMC_MUST_ALIGN_WRITE) \
+ if (SMC_MUST_ALIGN_WRITE(lp)) \
SMC_outl((x)<<16, ioaddr, 12<<SMC_IO_SHIFT); \
else \
SMC_outw(x, ioaddr, BANK_SELECT); \
@@ -1208,7 +1221,7 @@ static const char * chip_ids[ 16 ] = {
#define SMC_SET_PTR(lp, x) \
do { \
- if (SMC_MUST_ALIGN_WRITE) \
+ if (SMC_MUST_ALIGN_WRITE(lp)) \
SMC_outl((x)<<16, ioaddr, SMC_REG(lp, 4, 2)); \
else \
SMC_outw(x, ioaddr, PTR_REG(lp)); \
@@ -1226,7 +1239,7 @@ static const char * chip_ids[ 16 ] = {
#define SMC_SET_RPC(lp, x) \
do { \
- if (SMC_MUST_ALIGN_WRITE) \
+ if (SMC_MUST_ALIGN_WRITE(lp)) \
SMC_outl((x)<<16, ioaddr, SMC_REG(lp, 8, 0)); \
else \
SMC_outw(x, ioaddr, RPC_REG(lp)); \
@@ -1267,7 +1280,7 @@ static const char * chip_ids[ 16 ] = {
#define SMC_PUT_PKT_HDR(lp, status, length) \
do { \
- if (SMC_CAN_USE_32BIT) \
+ if (SMC_32BIT(lp)) \
SMC_outl((status) | (length)<<16, ioaddr, \
DATA_REG(lp)); \
else { \
@@ -1278,7 +1291,7 @@ static const char * chip_ids[ 16 ] = {
#define SMC_GET_PKT_HDR(lp, status, length) \
do { \
- if (SMC_CAN_USE_32BIT) { \
+ if (SMC_32BIT(lp)) { \
unsigned int __val = SMC_inl(ioaddr, DATA_REG(lp)); \
(status) = __val & 0xffff; \
(length) = __val >> 16; \
@@ -1290,7 +1303,7 @@ static const char * chip_ids[ 16 ] = {
#define SMC_PUSH_DATA(lp, p, l) \
do { \
- if (SMC_CAN_USE_32BIT) { \
+ if (SMC_32BIT(lp)) { \
void *__ptr = (p); \
int __len = (l); \
void __iomem *__ioaddr = ioaddr; \
@@ -1308,15 +1321,15 @@ static const char * chip_ids[ 16 ] = {
SMC_outw(*((u16 *)__ptr), ioaddr, \
DATA_REG(lp)); \
} \
- } else if (SMC_CAN_USE_16BIT) \
+ } else if (SMC_16BIT(lp)) \
SMC_outsw(ioaddr, DATA_REG(lp), p, (l) >> 1); \
- else if (SMC_CAN_USE_8BIT) \
+ else if (SMC_8BIT(lp)) \
SMC_outsb(ioaddr, DATA_REG(lp), p, l); \
} while (0)
#define SMC_PULL_DATA(lp, p, l) \
do { \
- if (SMC_CAN_USE_32BIT) { \
+ if (SMC_32BIT(lp)) { \
void *__ptr = (p); \
int __len = (l); \
void __iomem *__ioaddr = ioaddr; \
@@ -1343,9 +1356,9 @@ static const char * chip_ids[ 16 ] = {
__ioaddr = lp->datacs; \
__len += 2; \
SMC_insl(__ioaddr, DATA_REG(lp), __ptr, __len>>2); \
- } else if (SMC_CAN_USE_16BIT) \
+ } else if (SMC_16BIT(lp)) \
SMC_insw(ioaddr, DATA_REG(lp), p, (l) >> 1); \
- else if (SMC_CAN_USE_8BIT) \
+ else if (SMC_8BIT(lp)) \
SMC_insb(ioaddr, DATA_REG(lp), p, l); \
} while (0)
--- /dev/null
+++ work/include/linux/smc91x.h 2008-02-22 14:58:42.000000000 +0900
@@ -0,0 +1,13 @@
+#ifndef __SMC91X_H__
+#define __SMC91X_H__
+
+#define SMC91X_USE_8BIT (1 << 0)
+#define SMC91X_USE_16BIT (1 << 1)
+#define SMC91X_USE_32BIT (1 << 2)
+
+struct smc91x_platdata {
+ unsigned long flags;
+ unsigned long irq_flags; /* IRQF_... */
+};
+
+#endif /* __SMC91X_H__ */
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists