提交 3137553d 编写于 作者: J Jiri Slaby 提交者: Linus Torvalds

Char: cyclades, probe cleanup

- add fail paths
- merge 3 similar initializations into one (Z, Ze, Y)

[akpm@linux-foundation.org: build fix]
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 dd025c0c
......@@ -4455,6 +4455,7 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
cinfo->ports = kzalloc(sizeof(*cinfo->ports) * nports, GFP_KERNEL);
if (cinfo->ports == NULL) {
printk(KERN_ERR "Cyclades: cannot allocate ports\n");
cinfo->nports = 0;
return -ENOMEM;
}
......@@ -4647,9 +4648,15 @@ static int __init cy_detect_isa(void)
/* probe for CD1400... */
cy_isa_address = ioremap(isa_address, CyISA_Ywin);
if (cy_isa_address == NULL) {
printk(KERN_ERR "Cyclom-Y/ISA: can't remap base "
"address\n");
continue;
}
cy_isa_nchan = CyPORTS_PER_CHIP *
cyy_init_card(cy_isa_address, 0);
if (cy_isa_nchan == 0) {
iounmap(cy_isa_address);
continue;
}
#ifdef MODULE
......@@ -4663,6 +4670,7 @@ static int __init cy_detect_isa(void)
printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the "
"IRQ could not be detected.\n",
(unsigned long)cy_isa_address);
iounmap(cy_isa_address);
continue;
}
......@@ -4671,6 +4679,7 @@ static int __init cy_detect_isa(void)
"more channels are available. Change NR_PORTS "
"in cyclades.c and recompile kernel.\n",
(unsigned long)cy_isa_address);
iounmap(cy_isa_address);
return nboard;
}
/* fill the next cy_card structure available */
......@@ -4683,6 +4692,7 @@ static int __init cy_detect_isa(void)
"more cards can be used. Change NR_CARDS in "
"cyclades.c and recompile kernel.\n",
(unsigned long)cy_isa_address);
iounmap(cy_isa_address);
return nboard;
}
......@@ -4692,6 +4702,7 @@ static int __init cy_detect_isa(void)
printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
"could not allocate IRQ#%d.\n",
(unsigned long)cy_isa_address, cy_isa_irq);
iounmap(cy_isa_address);
return nboard;
}
......@@ -4702,7 +4713,12 @@ static int __init cy_detect_isa(void)
cy_card[j].bus_index = 0;
cy_card[j].first_line = cy_next_channel;
cy_card[j].num_chips = cy_isa_nchan / 4;
cy_init_card(&cy_card[j]);
if (cy_init_card(&cy_card[j])) {
cy_card[j].base_addr = NULL;
free_irq(cy_isa_irq, &cy_card[j]);
iounmap(cy_isa_address);
continue;
}
nboard++;
printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: "
......@@ -4736,333 +4752,245 @@ static void __devinit plx_init(void __iomem * addr, __u32 initctl)
cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000);
}
static int __devinit cy_init_Ze(struct RUNTIME_9060 __iomem *cy_pci_addr0,
int cy_pci_irq, struct pci_dev *pdev)
{
void __iomem *cy_pci_addr2;
unsigned int j;
unsigned short cy_pci_nchan;
cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ze_win);
readl(&cy_pci_addr0->mail_box_0);
dev_dbg(&pdev->dev, "new Cyclades-Z board. FPGA not loaded\n");
/* This must be the new Cyclades-Ze/PCI. */
cy_pci_nchan = ZE_V1_NPORTS;
if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) {
dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no channels "
"are available.\nChange NR_PORTS in cyclades.c "
"and recompile kernel.\n");
return -EIO;
}
/* fill the next cy_card structure available */
for (j = 0; j < NR_CARDS; j++) {
if (cy_card[j].base_addr == NULL)
break;
}
if (j == NR_CARDS) { /* no more cy_cards available */
dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no more "
"cards can be used.\nChange NR_CARDS in "
"cyclades.c and recompile kernel.\n");
return -EIO;
}
#ifdef CONFIG_CYZ_INTR
/* allocate IRQ only if board has an IRQ */
if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) {
if (request_irq(cy_pci_irq, cyz_interrupt,
IRQF_SHARED, "Cyclades-Z",
&cy_card[j])) {
dev_err(&pdev->dev, "could not allocate IRQ.\n");
return -EIO;
}
}
#endif /* CONFIG_CYZ_INTR */
/* set cy_card */
cy_card[j].base_addr = cy_pci_addr2;
cy_card[j].ctl_addr = cy_pci_addr0;
cy_card[j].irq = cy_pci_irq;
cy_card[j].bus_index = 1;
cy_card[j].first_line = cy_next_channel;
cy_card[j].num_chips = -1;
cy_init_card(&cy_card[j]);
pci_set_drvdata(pdev, &cy_card[j]);
dev_info(&pdev->dev, "Cyclades-Ze/PCI #%d found: %d channels starting "
"from port %d.\n", j + 1, cy_pci_nchan, cy_next_channel);
for (j = cy_next_channel; j < cy_next_channel + cy_pci_nchan; j++)
tty_register_device(cy_serial_driver, j, &pdev->dev);
cy_next_channel += cy_pci_nchan;
return 0;
}
static int __devinit cy_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
unsigned char cyy_rev_id;
int cy_pci_irq;
__u32 mailbox;
void __iomem *cy_pci_addr0, *cy_pci_addr2;
unsigned int device_id;
unsigned short j, cy_pci_nchan, plx_ver;
int retval;
void __iomem *addr0 = NULL, *addr2 = NULL;
char *card_name = NULL;
u32 mailbox;
unsigned int device_id, nchan = 0, card_no, i;
unsigned char plx_ver;
int retval, irq;
retval = pci_enable_device(pdev);
if (retval) {
dev_err(&pdev->dev, "cannot enable device\n");
return retval;
goto err;
}
/* read PCI configuration area */
cy_pci_irq = pdev->irq;
pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id);
irq = pdev->irq;
device_id = pdev->device & ~PCI_DEVICE_ID_MASK;
#if defined(__alpha__)
if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low "
"addresses on Alpha systems.\n");
retval = -EIO;
goto err_dis;
}
#endif
if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low "
"addresses\n");
retval = -EIO;
goto err_dis;
}
if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring "
"it...\n");
pdev->resource[2].flags &= ~IORESOURCE_IO;
}
retval = pci_request_regions(pdev, "cyclades");
if (retval) {
dev_err(&pdev->dev, "failed to reserve resources\n");
goto err_dis;
}
retval = -EIO;
if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
dev_dbg(&pdev->dev, "Cyclom-Y/PCI found\n");
if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
dev_warn(&pdev->dev, "PCI I/O bit incorrectly "
"set. Ignoring it...\n");
pdev->resource[2].flags &= ~IORESOURCE_IO;
}
card_name = "Cyclom-Y";
/* Although we don't use this I/O region, we should
request it from the kernel anyway, to avoid problems
with other drivers accessing it. */
retval = pci_request_regions(pdev, "Cyclom-Y");
if (retval) {
dev_err(&pdev->dev, "failed to reserve resources\n");
return retval;
addr0 = pci_iomap(pdev, 0, CyPCI_Yctl);
if (addr0 == NULL) {
dev_err(&pdev->dev, "can't remap ctl region\n");
goto err_reg;
}
#if defined(__alpha__)
if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for "
"low addresses on Alpha systems.\n");
return -EIO;
addr2 = pci_iomap(pdev, 2, CyPCI_Ywin);
if (addr2 == NULL) {
dev_err(&pdev->dev, "can't remap base region\n");
goto err_unmap;
}
#endif
cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Yctl);
cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ywin);
dev_dbg(&pdev->dev, "Cyclom-Y/PCI: relocate winaddr=0x%p "
"ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0);
cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP *
cyy_init_card(cy_pci_addr2, 1));
if (cy_pci_nchan == 0) {
nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1);
if (nchan == 0) {
dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
"Serial-Modules\n");
return -EIO;
}
if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) {
dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no "
"channels are available. Change NR_PORTS in "
"cyclades.c and recompile kernel.\n");
return -EIO;
}
/* fill the next cy_card structure available */
for (j = 0; j < NR_CARDS; j++) {
if (cy_card[j].base_addr == NULL)
break;
}
if (j == NR_CARDS) { /* no more cy_cards available */
dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no more "
"cards can be used. Change NR_CARDS in "
"cyclades.c and recompile kernel.\n");
return -EIO;
}
/* allocate IRQ */
retval = request_irq(cy_pci_irq, cyy_interrupt,
IRQF_SHARED, "Cyclom-Y", &cy_card[j]);
if (retval) {
dev_err(&pdev->dev, "could not allocate IRQ\n");
return retval;
}
/* set cy_card */
cy_card[j].base_addr = cy_pci_addr2;
cy_card[j].ctl_addr = cy_pci_addr0;
cy_card[j].irq = cy_pci_irq;
cy_card[j].bus_index = 1;
cy_card[j].first_line = cy_next_channel;
cy_card[j].num_chips = cy_pci_nchan / 4;
cy_init_card(&cy_card[j]);
pci_set_drvdata(pdev, &cy_card[j]);
/* enable interrupts in the PCI interface */
plx_ver = readb(cy_pci_addr2 + CyPLX_VER) & 0x0f;
switch (plx_ver) {
case PLX_9050:
cy_writeb(cy_pci_addr0 + 0x4c, 0x43);
break;
case PLX_9060:
case PLX_9080:
default: /* Old boards, use PLX_9060 */
plx_init(cy_pci_addr0, 0x6c);
/* For some yet unknown reason, once the PLX9060 reloads
the EEPROM, the IRQ is lost and, thus, we have to
re-write it to the PCI config. registers.
This will remain here until we find a permanent
fix. */
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE,
cy_pci_irq);
cy_writew(cy_pci_addr0 + 0x68,
readw(cy_pci_addr0 + 0x68) | 0x0900);
break;
}
dev_info(&pdev->dev, "Cyclom-Y/PCI #%d found: %d channels "
"starting from port %d.\n", j + 1, cy_pci_nchan,
cy_next_channel);
for (j = cy_next_channel;
j < cy_next_channel + cy_pci_nchan; j++)
tty_register_device(cy_serial_driver, j, &pdev->dev);
cy_next_channel += cy_pci_nchan;
} else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for "
"low addresses\n");
return -EIO;
} else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
dev_dbg(&pdev->dev, "Cyclades-Z/PCI found\n");
struct RUNTIME_9060 __iomem *ctl_addr;
cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Zctl);
ctl_addr = addr0 = pci_iomap(pdev, 0, CyPCI_Zctl);
if (addr0 == NULL) {
dev_err(&pdev->dev, "can't remap ctl region\n");
goto err_reg;
}
/* Disable interrupts on the PLX before resetting it */
cy_writew(cy_pci_addr0 + 0x68,
readw(cy_pci_addr0 + 0x68) & ~0x0900);
cy_writew(addr0 + 0x68,
readw(addr0 + 0x68) & ~0x0900);
plx_init(cy_pci_addr0, 0x6c);
plx_init(addr0, 0x6c);
/* For some yet unknown reason, once the PLX9060 reloads
the EEPROM, the IRQ is lost and, thus, we have to
re-write it to the PCI config. registers.
This will remain here until we find a permanent
fix. */
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq);
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
mailbox = (__u32)readl(&((struct RUNTIME_9060 __iomem *)
cy_pci_addr0)->mail_box_0);
mailbox = (u32)readl(&ctl_addr->mail_box_0);
if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
dev_warn(&pdev->dev, "PCI I/O bit incorrectly "
"set. Ignoring it...\n");
pdev->resource[2].flags &= ~IORESOURCE_IO;
}
/* Although we don't use this I/O region, we should
request it from the kernel anyway, to avoid problems
with other drivers accessing it. */
retval = pci_request_regions(pdev, "Cyclades-Z");
if (retval) {
dev_err(&pdev->dev, "failed to reserve resources\n");
return retval;
addr2 = pci_iomap(pdev, 2, mailbox == ZE_V1 ?
CyPCI_Ze_win : CyPCI_Zwin);
if (addr2 == NULL) {
dev_err(&pdev->dev, "can't remap base region\n");
goto err_unmap;
}
if (mailbox == ZE_V1) {
retval = cy_init_Ze(cy_pci_addr0, cy_pci_irq, pdev);
return retval;
card_name = "Cyclades-Ze";
readl(&ctl_addr->mail_box_0);
nchan = ZE_V1_NPORTS;
} else {
cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Zwin);
}
card_name = "Cyclades-8Zo";
dev_dbg(&pdev->dev, "Cyclades-Z/PCI: relocate winaddr=0x%p "
"ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0);
#ifdef CY_PCI_DEBUG
if (mailbox == ZO_V1) {
cy_writel(&((struct RUNTIME_9060 *)
(cy_pci_addr0))->loc_addr_base,
WIN_CREG);
dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA id %lx, "
"ver %lx\n", (ulong)(0xff &
readl(&((struct CUSTOM_REG *)
cy_pci_addr2)->fpga_id)),
(ulong)(0xff & readl(&((struct CUSTOM_REG *)
cy_pci_addr2)->fpga_version)));
cy_writel(&((struct RUNTIME_9060 *)
cy_pci_addr0)->loc_addr_base, WIN_RAM);
} else {
dev_info(&pdev->dev, "Cyclades-Z/PCI: New Cyclades-Z "
"board. FPGA not loaded\n");
}
if (mailbox == ZO_V1) {
cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA "
"id %lx, ver %lx\n", (ulong)(0xff &
readl(&((struct CUSTOM_REG *)addr2)->
fpga_id)), (ulong)(0xff &
readl(&((struct CUSTOM_REG *)addr2)->
fpga_version)));
cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
} else {
dev_info(&pdev->dev, "Cyclades-Z/PCI: New "
"Cyclades-Z board. FPGA not loaded\n");
}
#endif
/* The following clears the firmware id word. This
ensures that the driver will not attempt to talk to
the board until it has been properly initialized.
*/
if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L);
/* This must be a Cyclades-8Zo/PCI. The extendable
version will have a different device_id and will
be allocated its maximum number of ports. */
cy_pci_nchan = 8;
if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) {
dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
"channels are available. Change NR_PORTS in "
"cyclades.c and recompile kernel.\n");
return -EIO;
}
/* The following clears the firmware id word. This
ensures that the driver will not attempt to talk to
the board until it has been properly initialized.
*/
if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
cy_writel(addr2 + ID_ADDRESS, 0L);
/* fill the next cy_card structure available */
for (j = 0; j < NR_CARDS; j++) {
if (cy_card[j].base_addr == NULL)
break;
/* This must be a Cyclades-8Zo/PCI. The extendable
version will have a different device_id and will
be allocated its maximum number of ports. */
nchan = 8;
}
if (j == NR_CARDS) { /* no more cy_cards available */
dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
"more cards can be used. Change NR_CARDS in "
"cyclades.c and recompile kernel.\n");
return -EIO;
}
if ((cy_next_channel + nchan) > NR_PORTS) {
dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
"channels are available. Change NR_PORTS in "
"cyclades.c and recompile kernel.\n");
goto err_unmap;
}
/* fill the next cy_card structure available */
for (card_no = 0; card_no < NR_CARDS; card_no++) {
if (cy_card[card_no].base_addr == NULL)
break;
}
if (card_no == NR_CARDS) { /* no more cy_cards available */
dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
"more cards can be used. Change NR_CARDS in "
"cyclades.c and recompile kernel.\n");
goto err_unmap;
}
if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
/* allocate IRQ */
retval = request_irq(irq, cyy_interrupt,
IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]);
if (retval) {
dev_err(&pdev->dev, "could not allocate IRQ\n");
goto err_unmap;
}
cy_card[card_no].num_chips = nchan / 4;
} else {
#ifdef CONFIG_CYZ_INTR
/* allocate IRQ only if board has an IRQ */
if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) {
retval = request_irq(cy_pci_irq, cyz_interrupt,
if (irq != 0 && irq != 255) {
retval = request_irq(irq, cyz_interrupt,
IRQF_SHARED, "Cyclades-Z",
&cy_card[j]);
&cy_card[card_no]);
if (retval) {
dev_err(&pdev->dev, "could not allocate IRQ\n");
return retval;
goto err_unmap;
}
}
#endif /* CONFIG_CYZ_INTR */
cy_card[card_no].num_chips = -1;
}
/* set cy_card */
cy_card[j].base_addr = cy_pci_addr2;
cy_card[j].ctl_addr = cy_pci_addr0;
cy_card[j].irq = cy_pci_irq;
cy_card[j].bus_index = 1;
cy_card[j].first_line = cy_next_channel;
cy_card[j].num_chips = -1;
cy_init_card(&cy_card[j]);
pci_set_drvdata(pdev, &cy_card[j]);
/* set cy_card */
cy_card[card_no].base_addr = addr2;
cy_card[card_no].ctl_addr = addr0;
cy_card[card_no].irq = irq;
cy_card[card_no].bus_index = 1;
cy_card[card_no].first_line = cy_next_channel;
retval = cy_init_card(&cy_card[card_no]);
if (retval)
goto err_null;
dev_info(&pdev->dev, "Cyclades-8Zo/PCI #%d found: %d channels "
"starting from port %d.\n", j + 1, cy_pci_nchan,
cy_next_channel);
pci_set_drvdata(pdev, &cy_card[card_no]);
for (j = cy_next_channel;
j < cy_next_channel + cy_pci_nchan; j++)
tty_register_device(cy_serial_driver, j, &pdev->dev);
cy_next_channel += cy_pci_nchan;
if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
/* enable interrupts in the PCI interface */
plx_ver = readb(addr2 + CyPLX_VER) & 0x0f;
switch (plx_ver) {
case PLX_9050:
cy_writeb(addr0 + 0x4c, 0x43);
break;
case PLX_9060:
case PLX_9080:
default: /* Old boards, use PLX_9060 */
plx_init(addr0, 0x6c);
/* For some yet unknown reason, once the PLX9060 reloads
the EEPROM, the IRQ is lost and, thus, we have to
re-write it to the PCI config. registers.
This will remain here until we find a permanent
fix. */
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
cy_writew(addr0 + 0x68, readw(addr0 + 0x68) | 0x0900);
break;
}
}
dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from "
"port %d.\n", card_name, card_no + 1, nchan, cy_next_channel);
for (i = cy_next_channel; i < cy_next_channel + nchan; i++)
tty_register_device(cy_serial_driver, i, &pdev->dev);
cy_next_channel += nchan;
return 0;
err_null:
cy_card[card_no].base_addr = NULL;
free_irq(irq, &cy_card[card_no]);
err_unmap:
pci_iounmap(pdev, addr0);
if (addr2)
pci_iounmap(pdev, addr2);
err_reg:
pci_release_regions(pdev);
err_dis:
pci_disable_device(pdev);
err:
return retval;
}
static void __devexit cy_pci_remove(struct pci_dev *pdev)
......
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