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Message-ID: <20071008161910.639c5718@freepuppy.rosehill>
Date: Mon, 8 Oct 2007 16:19:10 -0700
From: Stephen Hemminger <shemminger@...ux-foundation.org>
To: Jeff Garzik <jgarzik@...ox.com>,
"David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Divy Le Ray <divy@...lsio.com>
Subject: [PATCH net-2.6.24] chelsio: sparse warning fixes (old cxgb2)
Fix problems detected by sparse:
1. whole chunk of MAC code was for defined and never used
2. hook for running ext intr in workqueue wasn't being used
Signed-off-by: Stephen Hemminger <shemminger@...ux-foundation.org>
--- a/drivers/net/chelsio/Makefile 2007-10-04 09:33:28.000000000 -0700
+++ b/drivers/net/chelsio/Makefile 2007-10-08 16:06:05.000000000 -0700
@@ -4,6 +4,6 @@
obj-$(CONFIG_CHELSIO_T1) += cxgb.o
-cxgb-$(CONFIG_CHELSIO_T1_1G) += mac.o mv88e1xxx.o vsc7326.o
+cxgb-$(CONFIG_CHELSIO_T1_1G) += mv88e1xxx.o vsc7326.o
cxgb-objs := cxgb2.o espi.o tp.o pm3393.o sge.o subr.o \
mv88x201x.o my3126.o $(cxgb-y)
--- a/drivers/net/chelsio/common.h 2007-10-04 09:33:28.000000000 -0700
+++ b/drivers/net/chelsio/common.h 2007-10-08 16:04:50.000000000 -0700
@@ -372,6 +372,7 @@ extern void t1_interrupts_enable(adapter
extern void t1_interrupts_disable(adapter_t *adapter);
extern void t1_interrupts_clear(adapter_t *adapter);
extern int t1_elmer0_ext_intr_handler(adapter_t *adapter);
+extern void t1_elmer0_ext_intr(adapter_t *adapter);
extern int t1_slow_intr_handler(adapter_t *adapter);
extern int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc);
--- a/drivers/net/chelsio/mac.c 2007-10-08 16:06:32.000000000 -0700
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,368 +0,0 @@
-/* $Date: 2005/10/22 00:42:59 $ $RCSfile: mac.c,v $ $Revision: 1.32 $ */
-#include "gmac.h"
-#include "regs.h"
-#include "fpga_defs.h"
-
-#define MAC_CSR_INTERFACE_GMII 0x0
-#define MAC_CSR_INTERFACE_TBI 0x1
-#define MAC_CSR_INTERFACE_MII 0x2
-#define MAC_CSR_INTERFACE_RMII 0x3
-
-/* Chelsio's MAC statistics. */
-struct mac_statistics {
-
- /* Transmit */
- u32 TxFramesTransmittedOK;
- u32 TxReserved1;
- u32 TxReserved2;
- u32 TxOctetsTransmittedOK;
- u32 TxFramesWithDeferredXmissions;
- u32 TxLateCollisions;
- u32 TxFramesAbortedDueToXSCollisions;
- u32 TxFramesLostDueToIntMACXmitError;
- u32 TxReserved3;
- u32 TxMulticastFrameXmittedOK;
- u32 TxBroadcastFramesXmittedOK;
- u32 TxFramesWithExcessiveDeferral;
- u32 TxPAUSEMACCtrlFramesTransmitted;
-
- /* Receive */
- u32 RxFramesReceivedOK;
- u32 RxFrameCheckSequenceErrors;
- u32 RxAlignmentErrors;
- u32 RxOctetsReceivedOK;
- u32 RxFramesLostDueToIntMACRcvError;
- u32 RxMulticastFramesReceivedOK;
- u32 RxBroadcastFramesReceivedOK;
- u32 RxInRangeLengthErrors;
- u32 RxTxOutOfRangeLengthField;
- u32 RxFrameTooLongErrors;
- u32 RxPAUSEMACCtrlFramesReceived;
-};
-
-static int static_aPorts[] = {
- FPGA_GMAC_INTERRUPT_PORT0,
- FPGA_GMAC_INTERRUPT_PORT1,
- FPGA_GMAC_INTERRUPT_PORT2,
- FPGA_GMAC_INTERRUPT_PORT3
-};
-
-struct _cmac_instance {
- u32 index;
-};
-
-static int mac_intr_enable(struct cmac *mac)
-{
- u32 mac_intr;
-
- if (t1_is_asic(mac->adapter)) {
- /* ASIC */
-
- /* We don't use the on chip MAC for ASIC products. */
- } else {
- /* FPGA */
-
- /* Set parent gmac interrupt. */
- mac_intr = readl(mac->adapter->regs + A_PL_ENABLE);
- mac_intr |= FPGA_PCIX_INTERRUPT_GMAC;
- writel(mac_intr, mac->adapter->regs + A_PL_ENABLE);
-
- mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
- mac_intr |= static_aPorts[mac->instance->index];
- writel(mac_intr,
- mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
- }
-
- return 0;
-}
-
-static int mac_intr_disable(struct cmac *mac)
-{
- u32 mac_intr;
-
- if (t1_is_asic(mac->adapter)) {
- /* ASIC */
-
- /* We don't use the on chip MAC for ASIC products. */
- } else {
- /* FPGA */
-
- /* Set parent gmac interrupt. */
- mac_intr = readl(mac->adapter->regs + A_PL_ENABLE);
- mac_intr &= ~FPGA_PCIX_INTERRUPT_GMAC;
- writel(mac_intr, mac->adapter->regs + A_PL_ENABLE);
-
- mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
- mac_intr &= ~(static_aPorts[mac->instance->index]);
- writel(mac_intr,
- mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
- }
-
- return 0;
-}
-
-static int mac_intr_clear(struct cmac *mac)
-{
- u32 mac_intr;
-
- if (t1_is_asic(mac->adapter)) {
- /* ASIC */
-
- /* We don't use the on chip MAC for ASIC products. */
- } else {
- /* FPGA */
-
- /* Set parent gmac interrupt. */
- writel(FPGA_PCIX_INTERRUPT_GMAC,
- mac->adapter->regs + A_PL_CAUSE);
- mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
- mac_intr |= (static_aPorts[mac->instance->index]);
- writel(mac_intr,
- mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
- }
-
- return 0;
-}
-
-static int mac_get_address(struct cmac *mac, u8 addr[6])
-{
- u32 data32_lo, data32_hi;
-
- data32_lo = readl(mac->adapter->regs
- + MAC_REG_IDLO(mac->instance->index));
- data32_hi = readl(mac->adapter->regs
- + MAC_REG_IDHI(mac->instance->index));
-
- addr[0] = (u8) ((data32_hi >> 8) & 0xFF);
- addr[1] = (u8) ((data32_hi) & 0xFF);
- addr[2] = (u8) ((data32_lo >> 24) & 0xFF);
- addr[3] = (u8) ((data32_lo >> 16) & 0xFF);
- addr[4] = (u8) ((data32_lo >> 8) & 0xFF);
- addr[5] = (u8) ((data32_lo) & 0xFF);
- return 0;
-}
-
-static int mac_reset(struct cmac *mac)
-{
- u32 data32;
- int mac_in_reset, time_out = 100;
- int idx = mac->instance->index;
-
- data32 = readl(mac->adapter->regs + MAC_REG_CSR(idx));
- writel(data32 | F_MAC_RESET,
- mac->adapter->regs + MAC_REG_CSR(idx));
-
- do {
- data32 = readl(mac->adapter->regs + MAC_REG_CSR(idx));
-
- mac_in_reset = data32 & F_MAC_RESET;
- if (mac_in_reset)
- udelay(1);
- } while (mac_in_reset && --time_out);
-
- if (mac_in_reset) {
- CH_ERR("%s: MAC %d reset timed out\n",
- mac->adapter->name, idx);
- return 2;
- }
-
- return 0;
-}
-
-static int mac_set_rx_mode(struct cmac *mac, struct t1_rx_mode *rm)
-{
- u32 val;
-
- val = readl(mac->adapter->regs
- + MAC_REG_CSR(mac->instance->index));
- val &= ~(F_MAC_PROMISC | F_MAC_MC_ENABLE);
- val |= V_MAC_PROMISC(t1_rx_mode_promisc(rm) != 0);
- val |= V_MAC_MC_ENABLE(t1_rx_mode_allmulti(rm) != 0);
- writel(val,
- mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
-
- return 0;
-}
-
-static int mac_set_speed_duplex_fc(struct cmac *mac, int speed, int duplex,
- int fc)
-{
- u32 data32;
-
- data32 = readl(mac->adapter->regs
- + MAC_REG_CSR(mac->instance->index));
- data32 &= ~(F_MAC_HALF_DUPLEX | V_MAC_SPEED(M_MAC_SPEED) |
- V_INTERFACE(M_INTERFACE) | F_MAC_TX_PAUSE_ENABLE |
- F_MAC_RX_PAUSE_ENABLE);
-
- switch (speed) {
- case SPEED_10:
- case SPEED_100:
- data32 |= V_INTERFACE(MAC_CSR_INTERFACE_MII);
- data32 |= V_MAC_SPEED(speed == SPEED_10 ? 0 : 1);
- break;
- case SPEED_1000:
- data32 |= V_INTERFACE(MAC_CSR_INTERFACE_GMII);
- data32 |= V_MAC_SPEED(2);
- break;
- }
-
- if (duplex >= 0)
- data32 |= V_MAC_HALF_DUPLEX(duplex == DUPLEX_HALF);
-
- if (fc >= 0) {
- data32 |= V_MAC_RX_PAUSE_ENABLE((fc & PAUSE_RX) != 0);
- data32 |= V_MAC_TX_PAUSE_ENABLE((fc & PAUSE_TX) != 0);
- }
-
- writel(data32,
- mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
- return 0;
-}
-
-static int mac_enable(struct cmac *mac, int which)
-{
- u32 val;
-
- val = readl(mac->adapter->regs
- + MAC_REG_CSR(mac->instance->index));
- if (which & MAC_DIRECTION_RX)
- val |= F_MAC_RX_ENABLE;
- if (which & MAC_DIRECTION_TX)
- val |= F_MAC_TX_ENABLE;
- writel(val,
- mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
- return 0;
-}
-
-static int mac_disable(struct cmac *mac, int which)
-{
- u32 val;
-
- val = readl(mac->adapter->regs
- + MAC_REG_CSR(mac->instance->index));
- if (which & MAC_DIRECTION_RX)
- val &= ~F_MAC_RX_ENABLE;
- if (which & MAC_DIRECTION_TX)
- val &= ~F_MAC_TX_ENABLE;
- writel(val,
- mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
- return 0;
-}
-
-#if 0
-static int mac_set_ifs(struct cmac *mac, u32 mode)
-{
- t1_write_reg_4(mac->adapter,
- MAC_REG_IFS(mac->instance->index),
- mode);
- return 0;
-}
-
-static int mac_enable_isl(struct cmac *mac)
-{
- u32 data32 = readl(mac->adapter->regs
- + MAC_REG_CSR(mac->instance->index));
- data32 |= F_MAC_RX_ENABLE | F_MAC_TX_ENABLE;
- t1_write_reg_4(mac->adapter,
- MAC_REG_CSR(mac->instance->index),
- data32);
- return 0;
-}
-#endif
-
-static int mac_set_mtu(struct cmac *mac, int mtu)
-{
- if (mtu > 9600)
- return -EINVAL;
- writel(mtu + ETH_HLEN + VLAN_HLEN,
- mac->adapter->regs + MAC_REG_LARGEFRAMELENGTH(mac->instance->index));
-
- return 0;
-}
-
-static const struct cmac_statistics *mac_update_statistics(struct cmac *mac,
- int flag)
-{
- struct mac_statistics st;
- u32 *p = (u32 *) & st, i;
-
- writel(0,
- mac->adapter->regs + MAC_REG_RMCNT(mac->instance->index));
-
- for (i = 0; i < sizeof(st) / sizeof(u32); i++)
- *p++ = readl(mac->adapter->regs
- + MAC_REG_RMDATA(mac->instance->index));
-
- /* XXX convert stats */
- return &mac->stats;
-}
-
-static void mac_destroy(struct cmac *mac)
-{
- kfree(mac);
-}
-
-static struct cmac_ops chelsio_mac_ops = {
- .destroy = mac_destroy,
- .reset = mac_reset,
- .interrupt_enable = mac_intr_enable,
- .interrupt_disable = mac_intr_disable,
- .interrupt_clear = mac_intr_clear,
- .enable = mac_enable,
- .disable = mac_disable,
- .set_mtu = mac_set_mtu,
- .set_rx_mode = mac_set_rx_mode,
- .set_speed_duplex_fc = mac_set_speed_duplex_fc,
- .macaddress_get = mac_get_address,
- .statistics_update = mac_update_statistics,
-};
-
-static struct cmac *mac_create(adapter_t *adapter, int index)
-{
- struct cmac *mac;
- u32 data32;
-
- if (index >= 4)
- return NULL;
-
- mac = kzalloc(sizeof(*mac) + sizeof(cmac_instance), GFP_KERNEL);
- if (!mac)
- return NULL;
-
- mac->ops = &chelsio_mac_ops;
- mac->instance = (cmac_instance *) (mac + 1);
-
- mac->instance->index = index;
- mac->adapter = adapter;
-
- data32 = readl(adapter->regs + MAC_REG_CSR(mac->instance->index));
- data32 &= ~(F_MAC_RESET | F_MAC_PROMISC | F_MAC_PROMISC |
- F_MAC_LB_ENABLE | F_MAC_RX_ENABLE | F_MAC_TX_ENABLE);
- data32 |= F_MAC_JUMBO_ENABLE;
- writel(data32, adapter->regs + MAC_REG_CSR(mac->instance->index));
-
- /* Initialize the random backoff seed. */
- data32 = 0x55aa + (3 * index);
- writel(data32,
- adapter->regs + MAC_REG_GMRANDBACKOFFSEED(mac->instance->index));
-
- /* Check to see if the mac address needs to be set manually. */
- data32 = readl(adapter->regs + MAC_REG_IDLO(mac->instance->index));
- if (data32 == 0 || data32 == 0xffffffff) {
- /*
- * Add a default MAC address if we can't read one.
- */
- writel(0x43FFFFFF - index,
- adapter->regs + MAC_REG_IDLO(mac->instance->index));
- writel(0x0007,
- adapter->regs + MAC_REG_IDHI(mac->instance->index));
- }
-
- (void) mac_set_mtu(mac, 1500);
- return mac;
-}
-
-const struct gmac t1_chelsio_mac_ops = {
- .create = mac_create
-};
--- a/drivers/net/chelsio/subr.c 2007-10-08 16:04:04.000000000 -0700
+++ b/drivers/net/chelsio/subr.c 2007-10-08 16:08:10.000000000 -0700
@@ -884,7 +884,7 @@ static int asic_slow_intr(adapter_t *ada
if (cause & F_PL_INTR_PCIX)
t1_pci_intr_handler(adapter);
if (cause & F_PL_INTR_EXT)
- t1_elmer0_ext_intr_handler(adapter);
+ t1_elmer0_ext_intr(adapter);
/* Clear the interrupts just processed. */
writel(cause, adapter->regs + A_PL_CAUSE);
-
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