Skip to content

L
linux
Commit ec957244 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
Browse files
Options

[PATCH] fix net/hamradio/dmascc with gcc 3.4 

From: Adrian Bunk <bunk@fs.tum.de>

drivers/net/hamradio/dmascc.c: In function `scc_isr':
drivers/net/hamradio/dmascc.c:250: sorry, unimplemented: inlining
failed in call to 'z8530_isr': function body not available
drivers/net/hamradio/dmascc.c:969: sorry, unimplemented: called from
here
drivers/net/hamradio/dmascc.c:250: sorry, unimplemented: inlining
failed in call to 'z8530_isr': function body not available
drivers/net/hamradio/dmascc.c:978: sorry, unimplemented: called from
here
Signed-off-by: default avatarAdrian Bunk <bunk@fs.tum.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
parent f27fbfc3
Show whitespace changes
Inline Side-by-side
Showing with 144 additions and 146 deletions
drivers/net/hamradio/dmascc.c
View file @ ec957244
......@@ -246,8 +246,14 @@ static int scc_send_packet(struct sk_buff *skb, struct net_device *dev);
static struct net_device_stats *scc_get_stats(struct net_device *dev);
static int scc_set_mac_address(struct net_device *dev, void *sa);
static irqreturn_t scc_isr(int irq, void *dev_id, struct pt_regs * regs);
static inline void tx_on(struct scc_priv *priv);
static inline void rx_on(struct scc_priv *priv);
static inline void rx_off(struct scc_priv *priv);
static void start_timer(struct scc_priv *priv, int t, int r15);
static inline unsigned char random(void);
static inline void z8530_isr(struct scc_info *info);
static irqreturn_t scc_isr(int irq, void *dev_id, struct pt_regs * regs);
static void rx_isr(struct scc_priv *priv);
static void special_condition(struct scc_priv *priv, int rc);
static void rx_bh(void *arg);
......@@ -255,12 +261,6 @@ static void tx_isr(struct scc_priv *priv);
static void es_isr(struct scc_priv *priv);
static void tm_isr(struct scc_priv *priv);
static inline void tx_on(struct scc_priv *priv);
static inline void rx_on(struct scc_priv *priv);
static inline void rx_off(struct scc_priv *priv);
static void start_timer(struct scc_priv *priv, int t, int r15);
static inline unsigned char random(void);
/* Initialization variables */
......@@ -945,42 +945,115 @@ static int scc_set_mac_address(struct net_device *dev, void *sa) {
}
static irqreturn_t scc_isr(int irq, void *dev_id, struct pt_regs * regs) {
struct scc_info *info = dev_id;
static inline void tx_on(struct scc_priv *priv) {
int i, n;
unsigned long flags;
spin_lock(info->priv[0].register_lock);
/* At this point interrupts are enabled, and the interrupt under service
is already acknowledged, but masked off.
if (priv->param.dma >= 0) {
n = (priv->chip == Z85230) ? 3 : 1;
/* Program DMA controller */
flags = claim_dma_lock();
set_dma_mode(priv->param.dma, DMA_MODE_WRITE);
set_dma_addr(priv->param.dma, (int) priv->tx_buf[priv->tx_tail]+n);
set_dma_count(priv->param.dma, priv->tx_len[priv->tx_tail]-n);
release_dma_lock(flags);
/* Enable TX underrun interrupt */
write_scc(priv, R15, TxUIE);
/* Configure DREQ */
if (priv->type == TYPE_TWIN)
outb((priv->param.dma == 1) ? TWIN_DMA_HDX_T1 : TWIN_DMA_HDX_T3,
priv->card_base + TWIN_DMA_CFG);
else
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN | WT_RDY_ENAB);
/* Write first byte(s) */
spin_lock_irqsave(priv->register_lock, flags);
for (i = 0; i < n; i++)
write_scc_data(priv, priv->tx_buf[priv->tx_tail][i], 1);
enable_dma(priv->param.dma);
spin_unlock_irqrestore(priv->register_lock, flags);
} else {
write_scc(priv, R15, TxUIE);
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN | TxINT_ENAB);
tx_isr(priv);
}
/* Reset EOM latch if we do not have the AUTOEOM feature */
if (priv->chip == Z8530) write_scc(priv, R0, RES_EOM_L);
}
Interrupt processing: We loop until we know that the IRQ line is
low. If another positive edge occurs afterwards during the ISR,
another interrupt will be triggered by the interrupt controller
as soon as the IRQ level is enabled again (see asm/irq.h).
Bottom-half handlers will be processed after scc_isr(). This is
important, since we only have small ringbuffers and want new data
to be fetched/delivered immediately. */
static inline void rx_on(struct scc_priv *priv) {
unsigned long flags;
if (info->priv[0].type == TYPE_TWIN) {
int is, card_base = info->priv[0].card_base;
while ((is = ~inb(card_base + TWIN_INT_REG)) &
TWIN_INT_MSK) {
if (is & TWIN_SCC_MSK) {
z8530_isr(info);
} else if (is & TWIN_TMR1_MSK) {
inb(card_base + TWIN_CLR_TMR1);
tm_isr(&info->priv[0]);
/* Clear RX FIFO */
while (read_scc(priv, R0) & Rx_CH_AV) read_scc_data(priv);
priv->rx_over = 0;
if (priv->param.dma >= 0) {
/* Program DMA controller */
flags = claim_dma_lock();
set_dma_mode(priv->param.dma, DMA_MODE_READ);
set_dma_addr(priv->param.dma, (int) priv->rx_buf[priv->rx_head]);
set_dma_count(priv->param.dma, BUF_SIZE);
release_dma_lock(flags);
enable_dma(priv->param.dma);
/* Configure PackeTwin DMA */
if (priv->type == TYPE_TWIN) {
outb((priv->param.dma == 1) ? TWIN_DMA_HDX_R1 : TWIN_DMA_HDX_R3,
priv->card_base + TWIN_DMA_CFG);
}
/* Sp. cond. intr. only, ext int enable, RX DMA enable */
write_scc(priv, R1, EXT_INT_ENAB | INT_ERR_Rx |
WT_RDY_RT | WT_FN_RDYFN | WT_RDY_ENAB);
} else {
inb(card_base + TWIN_CLR_TMR2);
tm_isr(&info->priv[1]);
/* Reset current frame */
priv->rx_ptr = 0;
/* Intr. on all Rx characters and Sp. cond., ext int enable */
write_scc(priv, R1, EXT_INT_ENAB | INT_ALL_Rx | WT_RDY_RT |
WT_FN_RDYFN);
}
write_scc(priv, R0, ERR_RES);
write_scc(priv, R3, RxENABLE | Rx8 | RxCRC_ENAB);
}
static inline void rx_off(struct scc_priv *priv) {
/* Disable receiver */
write_scc(priv, R3, Rx8);
/* Disable DREQ / RX interrupt */
if (priv->param.dma >= 0 && priv->type == TYPE_TWIN)
outb(0, priv->card_base + TWIN_DMA_CFG);
else
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN);
/* Disable DMA */
if (priv->param.dma >= 0) disable_dma(priv->param.dma);
}
static void start_timer(struct scc_priv *priv, int t, int r15) {
unsigned long flags;
outb(priv->tmr_mode, priv->tmr_ctrl);
if (t == 0) {
tm_isr(priv);
} else if (t > 0) {
save_flags(flags);
cli();
outb(t & 0xFF, priv->tmr_cnt);
outb((t >> 8) & 0xFF, priv->tmr_cnt);
if (priv->type != TYPE_TWIN) {
write_scc(priv, R15, r15 | CTSIE);
priv->rr0 |= CTS;
}
restore_flags(flags);
}
} else z8530_isr(info);
spin_unlock(info->priv[0].register_lock);
return IRQ_HANDLED;
}
static inline unsigned char random(void) {
/* See "Numerical Recipes in C", second edition, p. 284 */
rand = rand * 1664525L + 1013904223L;
return (unsigned char) (rand >> 24);
}
static inline void z8530_isr(struct scc_info *info) {
int is, i = 100;
......@@ -1009,6 +1082,42 @@ static inline void z8530_isr(struct scc_info *info) {
}
static irqreturn_t scc_isr(int irq, void *dev_id, struct pt_regs * regs) {
struct scc_info *info = dev_id;
spin_lock(info->priv[0].register_lock);
/* At this point interrupts are enabled, and the interrupt under service
is already acknowledged, but masked off.
Interrupt processing: We loop until we know that the IRQ line is
low. If another positive edge occurs afterwards during the ISR,
another interrupt will be triggered by the interrupt controller
as soon as the IRQ level is enabled again (see asm/irq.h).
Bottom-half handlers will be processed after scc_isr(). This is
important, since we only have small ringbuffers and want new data
to be fetched/delivered immediately. */
if (info->priv[0].type == TYPE_TWIN) {
int is, card_base = info->priv[0].card_base;
while ((is = ~inb(card_base + TWIN_INT_REG)) &
TWIN_INT_MSK) {
if (is & TWIN_SCC_MSK) {
z8530_isr(info);
} else if (is & TWIN_TMR1_MSK) {
inb(card_base + TWIN_CLR_TMR1);
tm_isr(&info->priv[0]);
} else {
inb(card_base + TWIN_CLR_TMR2);
tm_isr(&info->priv[1]);
}
}
} else z8530_isr(info);
spin_unlock(info->priv[0].register_lock);
return IRQ_HANDLED;
}
static void rx_isr(struct scc_priv *priv) {
if (priv->param.dma >= 0) {
/* Check special condition and perform error reset. See 2.4.7.5. */
......@@ -1292,114 +1401,3 @@ static void tm_isr(struct scc_priv *priv) {
break;
}
}
static inline void tx_on(struct scc_priv *priv) {
int i, n;
unsigned long flags;
if (priv->param.dma >= 0) {
n = (priv->chip == Z85230) ? 3 : 1;
/* Program DMA controller */
flags = claim_dma_lock();
set_dma_mode(priv->param.dma, DMA_MODE_WRITE);
set_dma_addr(priv->param.dma, (int) priv->tx_buf[priv->tx_tail]+n);
set_dma_count(priv->param.dma, priv->tx_len[priv->tx_tail]-n);
release_dma_lock(flags);
/* Enable TX underrun interrupt */
write_scc(priv, R15, TxUIE);
/* Configure DREQ */
if (priv->type == TYPE_TWIN)
outb((priv->param.dma == 1) ? TWIN_DMA_HDX_T1 : TWIN_DMA_HDX_T3,
priv->card_base + TWIN_DMA_CFG);
else
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN | WT_RDY_ENAB);
/* Write first byte(s) */
spin_lock_irqsave(priv->register_lock, flags);
for (i = 0; i < n; i++)
write_scc_data(priv, priv->tx_buf[priv->tx_tail][i], 1);
enable_dma(priv->param.dma);
spin_unlock_irqrestore(priv->register_lock, flags);
} else {
write_scc(priv, R15, TxUIE);
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN | TxINT_ENAB);
tx_isr(priv);
}
/* Reset EOM latch if we do not have the AUTOEOM feature */
if (priv->chip == Z8530) write_scc(priv, R0, RES_EOM_L);
}
static inline void rx_on(struct scc_priv *priv) {
unsigned long flags;
/* Clear RX FIFO */
while (read_scc(priv, R0) & Rx_CH_AV) read_scc_data(priv);
priv->rx_over = 0;
if (priv->param.dma >= 0) {
/* Program DMA controller */
flags = claim_dma_lock();
set_dma_mode(priv->param.dma, DMA_MODE_READ);
set_dma_addr(priv->param.dma, (int) priv->rx_buf[priv->rx_head]);
set_dma_count(priv->param.dma, BUF_SIZE);
release_dma_lock(flags);
enable_dma(priv->param.dma);
/* Configure PackeTwin DMA */
if (priv->type == TYPE_TWIN) {
outb((priv->param.dma == 1) ? TWIN_DMA_HDX_R1 : TWIN_DMA_HDX_R3,
priv->card_base + TWIN_DMA_CFG);
}
/* Sp. cond. intr. only, ext int enable, RX DMA enable */
write_scc(priv, R1, EXT_INT_ENAB | INT_ERR_Rx |
WT_RDY_RT | WT_FN_RDYFN | WT_RDY_ENAB);
} else {
/* Reset current frame */
priv->rx_ptr = 0;
/* Intr. on all Rx characters and Sp. cond., ext int enable */
write_scc(priv, R1, EXT_INT_ENAB | INT_ALL_Rx | WT_RDY_RT |
WT_FN_RDYFN);
}
write_scc(priv, R0, ERR_RES);
write_scc(priv, R3, RxENABLE | Rx8 | RxCRC_ENAB);
}
static inline void rx_off(struct scc_priv *priv) {
/* Disable receiver */
write_scc(priv, R3, Rx8);
/* Disable DREQ / RX interrupt */
if (priv->param.dma >= 0 && priv->type == TYPE_TWIN)
outb(0, priv->card_base + TWIN_DMA_CFG);
else
write_scc(priv, R1, EXT_INT_ENAB | WT_FN_RDYFN);
/* Disable DMA */
if (priv->param.dma >= 0) disable_dma(priv->param.dma);
}
static void start_timer(struct scc_priv *priv, int t, int r15) {
unsigned long flags;
outb(priv->tmr_mode, priv->tmr_ctrl);
if (t == 0) {
tm_isr(priv);
} else if (t > 0) {
save_flags(flags);
cli();
outb(t & 0xFF, priv->tmr_cnt);
outb((t >> 8) & 0xFF, priv->tmr_cnt);
if (priv->type != TYPE_TWIN) {
write_scc(priv, R15, r15 | CTSIE);
priv->rr0 |= CTS;
}
restore_flags(flags);
}
}
static inline unsigned char random(void) {
/* See "Numerical Recipes in C", second edition, p. 284 */
rand = rand * 1664525L + 1013904223L;
return (unsigned char) (rand >> 24);
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7