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authorJiri Slaby <jirislaby@gmail.com>2007-05-08 03:37:04 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 14:15:25 -0400
commit3137553d3f78f12a077459ee59e4b17f8db9f0cf (patch)
tree3cdcf515a191f5449030d40ab9668101f817fc81 /drivers/char/cyclades.c
parentdd025c0c7a047b1be7dfaa4061368b4783d89ebb (diff)
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: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/cyclades.c')
-rw-r--r--drivers/char/cyclades.c468
1 files changed, 198 insertions, 270 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 7fe4bb60f690..060011134aa0 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -4455,6 +4455,7 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo)
4455 cinfo->ports = kzalloc(sizeof(*cinfo->ports) * nports, GFP_KERNEL); 4455 cinfo->ports = kzalloc(sizeof(*cinfo->ports) * nports, GFP_KERNEL);
4456 if (cinfo->ports == NULL) { 4456 if (cinfo->ports == NULL) {
4457 printk(KERN_ERR "Cyclades: cannot allocate ports\n"); 4457 printk(KERN_ERR "Cyclades: cannot allocate ports\n");
4458 cinfo->nports = 0;
4458 return -ENOMEM; 4459 return -ENOMEM;
4459 } 4460 }
4460 4461
@@ -4647,9 +4648,15 @@ static int __init cy_detect_isa(void)
4647 4648
4648 /* probe for CD1400... */ 4649 /* probe for CD1400... */
4649 cy_isa_address = ioremap(isa_address, CyISA_Ywin); 4650 cy_isa_address = ioremap(isa_address, CyISA_Ywin);
4651 if (cy_isa_address == NULL) {
4652 printk(KERN_ERR "Cyclom-Y/ISA: can't remap base "
4653 "address\n");
4654 continue;
4655 }
4650 cy_isa_nchan = CyPORTS_PER_CHIP * 4656 cy_isa_nchan = CyPORTS_PER_CHIP *
4651 cyy_init_card(cy_isa_address, 0); 4657 cyy_init_card(cy_isa_address, 0);
4652 if (cy_isa_nchan == 0) { 4658 if (cy_isa_nchan == 0) {
4659 iounmap(cy_isa_address);
4653 continue; 4660 continue;
4654 } 4661 }
4655#ifdef MODULE 4662#ifdef MODULE
@@ -4663,6 +4670,7 @@ static int __init cy_detect_isa(void)
4663 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " 4670 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the "
4664 "IRQ could not be detected.\n", 4671 "IRQ could not be detected.\n",
4665 (unsigned long)cy_isa_address); 4672 (unsigned long)cy_isa_address);
4673 iounmap(cy_isa_address);
4666 continue; 4674 continue;
4667 } 4675 }
4668 4676
@@ -4671,6 +4679,7 @@ static int __init cy_detect_isa(void)
4671 "more channels are available. Change NR_PORTS " 4679 "more channels are available. Change NR_PORTS "
4672 "in cyclades.c and recompile kernel.\n", 4680 "in cyclades.c and recompile kernel.\n",
4673 (unsigned long)cy_isa_address); 4681 (unsigned long)cy_isa_address);
4682 iounmap(cy_isa_address);
4674 return nboard; 4683 return nboard;
4675 } 4684 }
4676 /* fill the next cy_card structure available */ 4685 /* fill the next cy_card structure available */
@@ -4683,6 +4692,7 @@ static int __init cy_detect_isa(void)
4683 "more cards can be used. Change NR_CARDS in " 4692 "more cards can be used. Change NR_CARDS in "
4684 "cyclades.c and recompile kernel.\n", 4693 "cyclades.c and recompile kernel.\n",
4685 (unsigned long)cy_isa_address); 4694 (unsigned long)cy_isa_address);
4695 iounmap(cy_isa_address);
4686 return nboard; 4696 return nboard;
4687 } 4697 }
4688 4698
@@ -4692,6 +4702,7 @@ static int __init cy_detect_isa(void)
4692 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " 4702 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
4693 "could not allocate IRQ#%d.\n", 4703 "could not allocate IRQ#%d.\n",
4694 (unsigned long)cy_isa_address, cy_isa_irq); 4704 (unsigned long)cy_isa_address, cy_isa_irq);
4705 iounmap(cy_isa_address);
4695 return nboard; 4706 return nboard;
4696 } 4707 }
4697 4708
@@ -4702,7 +4713,12 @@ static int __init cy_detect_isa(void)
4702 cy_card[j].bus_index = 0; 4713 cy_card[j].bus_index = 0;
4703 cy_card[j].first_line = cy_next_channel; 4714 cy_card[j].first_line = cy_next_channel;
4704 cy_card[j].num_chips = cy_isa_nchan / 4; 4715 cy_card[j].num_chips = cy_isa_nchan / 4;
4705 cy_init_card(&cy_card[j]); 4716 if (cy_init_card(&cy_card[j])) {
4717 cy_card[j].base_addr = NULL;
4718 free_irq(cy_isa_irq, &cy_card[j]);
4719 iounmap(cy_isa_address);
4720 continue;
4721 }
4706 nboard++; 4722 nboard++;
4707 4723
4708 printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " 4724 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)
4736 cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000); 4752 cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000);
4737} 4753}
4738 4754
4739static int __devinit cy_init_Ze(struct RUNTIME_9060 __iomem *cy_pci_addr0,
4740 int cy_pci_irq, struct pci_dev *pdev)
4741{
4742 void __iomem *cy_pci_addr2;
4743 unsigned int j;
4744 unsigned short cy_pci_nchan;
4745
4746 cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ze_win);
4747
4748 readl(&cy_pci_addr0->mail_box_0);
4749 dev_dbg(&pdev->dev, "new Cyclades-Z board. FPGA not loaded\n");
4750
4751 /* This must be the new Cyclades-Ze/PCI. */
4752 cy_pci_nchan = ZE_V1_NPORTS;
4753
4754 if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) {
4755 dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no channels "
4756 "are available.\nChange NR_PORTS in cyclades.c "
4757 "and recompile kernel.\n");
4758 return -EIO;
4759 }
4760
4761 /* fill the next cy_card structure available */
4762 for (j = 0; j < NR_CARDS; j++) {
4763 if (cy_card[j].base_addr == NULL)
4764 break;
4765 }
4766 if (j == NR_CARDS) { /* no more cy_cards available */
4767 dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no more "
4768 "cards can be used.\nChange NR_CARDS in "
4769 "cyclades.c and recompile kernel.\n");
4770 return -EIO;
4771 }
4772#ifdef CONFIG_CYZ_INTR
4773 /* allocate IRQ only if board has an IRQ */
4774 if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) {
4775 if (request_irq(cy_pci_irq, cyz_interrupt,
4776 IRQF_SHARED, "Cyclades-Z",
4777 &cy_card[j])) {
4778 dev_err(&pdev->dev, "could not allocate IRQ.\n");
4779 return -EIO;
4780 }
4781 }
4782#endif /* CONFIG_CYZ_INTR */
4783
4784 /* set cy_card */
4785 cy_card[j].base_addr = cy_pci_addr2;
4786 cy_card[j].ctl_addr = cy_pci_addr0;
4787 cy_card[j].irq = cy_pci_irq;
4788 cy_card[j].bus_index = 1;
4789 cy_card[j].first_line = cy_next_channel;
4790 cy_card[j].num_chips = -1;
4791 cy_init_card(&cy_card[j]);
4792 pci_set_drvdata(pdev, &cy_card[j]);
4793
4794 dev_info(&pdev->dev, "Cyclades-Ze/PCI #%d found: %d channels starting "
4795 "from port %d.\n", j + 1, cy_pci_nchan, cy_next_channel);
4796
4797 for (j = cy_next_channel; j < cy_next_channel + cy_pci_nchan; j++)
4798 tty_register_device(cy_serial_driver, j, &pdev->dev);
4799 cy_next_channel += cy_pci_nchan;
4800
4801 return 0;
4802}
4803
4804static int __devinit cy_pci_probe(struct pci_dev *pdev, 4755static int __devinit cy_pci_probe(struct pci_dev *pdev,
4805 const struct pci_device_id *ent) 4756 const struct pci_device_id *ent)
4806{ 4757{
4807 unsigned char cyy_rev_id; 4758 void __iomem *addr0 = NULL, *addr2 = NULL;
4808 int cy_pci_irq; 4759 char *card_name = NULL;
4809 __u32 mailbox; 4760 u32 mailbox;
4810 void __iomem *cy_pci_addr0, *cy_pci_addr2; 4761 unsigned int device_id, nchan = 0, card_no, i;
4811 unsigned int device_id; 4762 unsigned char plx_ver;
4812 unsigned short j, cy_pci_nchan, plx_ver; 4763 int retval, irq;
4813 int retval;
4814 4764
4815 retval = pci_enable_device(pdev); 4765 retval = pci_enable_device(pdev);
4816 if (retval) { 4766 if (retval) {
4817 dev_err(&pdev->dev, "cannot enable device\n"); 4767 dev_err(&pdev->dev, "cannot enable device\n");
4818 return retval; 4768 goto err;
4819 } 4769 }
4820 4770
4821 /* read PCI configuration area */ 4771 /* read PCI configuration area */
4822 cy_pci_irq = pdev->irq; 4772 irq = pdev->irq;
4823 pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id);
4824
4825 device_id = pdev->device & ~PCI_DEVICE_ID_MASK; 4773 device_id = pdev->device & ~PCI_DEVICE_ID_MASK;
4826 4774
4775#if defined(__alpha__)
4776 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
4777 dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low "
4778 "addresses on Alpha systems.\n");
4779 retval = -EIO;
4780 goto err_dis;
4781 }
4782#endif
4783 if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
4784 dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low "
4785 "addresses\n");
4786 retval = -EIO;
4787 goto err_dis;
4788 }
4789
4790 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
4791 dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring "
4792 "it...\n");
4793 pdev->resource[2].flags &= ~IORESOURCE_IO;
4794 }
4795
4796 retval = pci_request_regions(pdev, "cyclades");
4797 if (retval) {
4798 dev_err(&pdev->dev, "failed to reserve resources\n");
4799 goto err_dis;
4800 }
4801
4802 retval = -EIO;
4827 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || 4803 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
4828 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { 4804 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
4829 dev_dbg(&pdev->dev, "Cyclom-Y/PCI found\n"); 4805 card_name = "Cyclom-Y";
4830
4831 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
4832 dev_warn(&pdev->dev, "PCI I/O bit incorrectly "
4833 "set. Ignoring it...\n");
4834 pdev->resource[2].flags &= ~IORESOURCE_IO;
4835 }
4836 4806
4837 /* Although we don't use this I/O region, we should 4807 addr0 = pci_iomap(pdev, 0, CyPCI_Yctl);
4838 request it from the kernel anyway, to avoid problems 4808 if (addr0 == NULL) {
4839 with other drivers accessing it. */ 4809 dev_err(&pdev->dev, "can't remap ctl region\n");
4840 retval = pci_request_regions(pdev, "Cyclom-Y"); 4810 goto err_reg;
4841 if (retval) {
4842 dev_err(&pdev->dev, "failed to reserve resources\n");
4843 return retval;
4844 } 4811 }
4845#if defined(__alpha__) 4812 addr2 = pci_iomap(pdev, 2, CyPCI_Ywin);
4846 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ 4813 if (addr2 == NULL) {
4847 dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for " 4814 dev_err(&pdev->dev, "can't remap base region\n");
4848 "low addresses on Alpha systems.\n"); 4815 goto err_unmap;
4849 return -EIO;
4850 } 4816 }
4851#endif
4852 cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Yctl);
4853 cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ywin);
4854
4855 dev_dbg(&pdev->dev, "Cyclom-Y/PCI: relocate winaddr=0x%p "
4856 "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0);
4857 4817
4858 cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * 4818 nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1);
4859 cyy_init_card(cy_pci_addr2, 1)); 4819 if (nchan == 0) {
4860 if (cy_pci_nchan == 0) {
4861 dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " 4820 dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
4862 "Serial-Modules\n"); 4821 "Serial-Modules\n");
4863 return -EIO; 4822 return -EIO;
4864 } 4823 }
4865 if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) {
4866 dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no "
4867 "channels are available. Change NR_PORTS in "
4868 "cyclades.c and recompile kernel.\n");
4869 return -EIO;
4870 }
4871 /* fill the next cy_card structure available */
4872 for (j = 0; j < NR_CARDS; j++) {
4873 if (cy_card[j].base_addr == NULL)
4874 break;
4875 }
4876 if (j == NR_CARDS) { /* no more cy_cards available */
4877 dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no more "
4878 "cards can be used. Change NR_CARDS in "
4879 "cyclades.c and recompile kernel.\n");
4880 return -EIO;
4881 }
4882
4883 /* allocate IRQ */
4884 retval = request_irq(cy_pci_irq, cyy_interrupt,
4885 IRQF_SHARED, "Cyclom-Y", &cy_card[j]);
4886 if (retval) {
4887 dev_err(&pdev->dev, "could not allocate IRQ\n");
4888 return retval;
4889 }
4890
4891 /* set cy_card */
4892 cy_card[j].base_addr = cy_pci_addr2;
4893 cy_card[j].ctl_addr = cy_pci_addr0;
4894 cy_card[j].irq = cy_pci_irq;
4895 cy_card[j].bus_index = 1;
4896 cy_card[j].first_line = cy_next_channel;
4897 cy_card[j].num_chips = cy_pci_nchan / 4;
4898 cy_init_card(&cy_card[j]);
4899 pci_set_drvdata(pdev, &cy_card[j]);
4900
4901 /* enable interrupts in the PCI interface */
4902 plx_ver = readb(cy_pci_addr2 + CyPLX_VER) & 0x0f;
4903 switch (plx_ver) {
4904 case PLX_9050:
4905
4906 cy_writeb(cy_pci_addr0 + 0x4c, 0x43);
4907 break;
4908
4909 case PLX_9060:
4910 case PLX_9080:
4911 default: /* Old boards, use PLX_9060 */
4912
4913 plx_init(cy_pci_addr0, 0x6c);
4914 /* For some yet unknown reason, once the PLX9060 reloads
4915 the EEPROM, the IRQ is lost and, thus, we have to
4916 re-write it to the PCI config. registers.
4917 This will remain here until we find a permanent
4918 fix. */
4919 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE,
4920 cy_pci_irq);
4921
4922 cy_writew(cy_pci_addr0 + 0x68,
4923 readw(cy_pci_addr0 + 0x68) | 0x0900);
4924 break;
4925 }
4926
4927 dev_info(&pdev->dev, "Cyclom-Y/PCI #%d found: %d channels "
4928 "starting from port %d.\n", j + 1, cy_pci_nchan,
4929 cy_next_channel);
4930
4931 for (j = cy_next_channel;
4932 j < cy_next_channel + cy_pci_nchan; j++)
4933 tty_register_device(cy_serial_driver, j, &pdev->dev);
4934
4935 cy_next_channel += cy_pci_nchan;
4936 } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
4937 dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for "
4938 "low addresses\n");
4939 return -EIO;
4940 } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { 4824 } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
4941 dev_dbg(&pdev->dev, "Cyclades-Z/PCI found\n"); 4825 struct RUNTIME_9060 __iomem *ctl_addr;
4942 4826
4943 cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Zctl); 4827 ctl_addr = addr0 = pci_iomap(pdev, 0, CyPCI_Zctl);
4828 if (addr0 == NULL) {
4829 dev_err(&pdev->dev, "can't remap ctl region\n");
4830 goto err_reg;
4831 }
4944 4832
4945 /* Disable interrupts on the PLX before resetting it */ 4833 /* Disable interrupts on the PLX before resetting it */
4946 cy_writew(cy_pci_addr0 + 0x68, 4834 cy_writew(addr0 + 0x68,
4947 readw(cy_pci_addr0 + 0x68) & ~0x0900); 4835 readw(addr0 + 0x68) & ~0x0900);
4948 4836
4949 plx_init(cy_pci_addr0, 0x6c); 4837 plx_init(addr0, 0x6c);
4950 /* For some yet unknown reason, once the PLX9060 reloads 4838 /* For some yet unknown reason, once the PLX9060 reloads
4951 the EEPROM, the IRQ is lost and, thus, we have to 4839 the EEPROM, the IRQ is lost and, thus, we have to
4952 re-write it to the PCI config. registers. 4840 re-write it to the PCI config. registers.
4953 This will remain here until we find a permanent 4841 This will remain here until we find a permanent
4954 fix. */ 4842 fix. */
4955 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); 4843 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
4956 4844
4957 mailbox = (__u32)readl(&((struct RUNTIME_9060 __iomem *) 4845 mailbox = (u32)readl(&ctl_addr->mail_box_0);
4958 cy_pci_addr0)->mail_box_0);
4959 4846
4960 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { 4847 addr2 = pci_iomap(pdev, 2, mailbox == ZE_V1 ?
4961 dev_warn(&pdev->dev, "PCI I/O bit incorrectly " 4848 CyPCI_Ze_win : CyPCI_Zwin);
4962 "set. Ignoring it...\n"); 4849 if (addr2 == NULL) {
4963 pdev->resource[2].flags &= ~IORESOURCE_IO; 4850 dev_err(&pdev->dev, "can't remap base region\n");
4964 } 4851 goto err_unmap;
4965
4966 /* Although we don't use this I/O region, we should
4967 request it from the kernel anyway, to avoid problems
4968 with other drivers accessing it. */
4969 retval = pci_request_regions(pdev, "Cyclades-Z");
4970 if (retval) {
4971 dev_err(&pdev->dev, "failed to reserve resources\n");
4972 return retval;
4973 } 4852 }
4974 4853
4975 if (mailbox == ZE_V1) { 4854 if (mailbox == ZE_V1) {
4976 retval = cy_init_Ze(cy_pci_addr0, cy_pci_irq, pdev); 4855 card_name = "Cyclades-Ze";
4977 return retval; 4856
4857 readl(&ctl_addr->mail_box_0);
4858 nchan = ZE_V1_NPORTS;
4978 } else { 4859 } else {
4979 cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Zwin); 4860 card_name = "Cyclades-8Zo";
4980 }
4981 4861
4982 dev_dbg(&pdev->dev, "Cyclades-Z/PCI: relocate winaddr=0x%p "
4983 "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0);
4984#ifdef CY_PCI_DEBUG 4862#ifdef CY_PCI_DEBUG
4985 if (mailbox == ZO_V1) { 4863 if (mailbox == ZO_V1) {
4986 cy_writel(&((struct RUNTIME_9060 *) 4864 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
4987 (cy_pci_addr0))->loc_addr_base, 4865 dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA "
4988 WIN_CREG); 4866 "id %lx, ver %lx\n", (ulong)(0xff &
4989 dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA id %lx, " 4867 readl(&((struct CUSTOM_REG *)addr2)->
4990 "ver %lx\n", (ulong)(0xff & 4868 fpga_id)), (ulong)(0xff &
4991 readl(&((struct CUSTOM_REG *) 4869 readl(&((struct CUSTOM_REG *)addr2)->
4992 cy_pci_addr2)->fpga_id)), 4870 fpga_version)));
4993 (ulong)(0xff & readl(&((struct CUSTOM_REG *) 4871 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
4994 cy_pci_addr2)->fpga_version))); 4872 } else {
4995 cy_writel(&((struct RUNTIME_9060 *) 4873 dev_info(&pdev->dev, "Cyclades-Z/PCI: New "
4996 cy_pci_addr0)->loc_addr_base, WIN_RAM); 4874 "Cyclades-Z board. FPGA not loaded\n");
4997 } else { 4875 }
4998 dev_info(&pdev->dev, "Cyclades-Z/PCI: New Cyclades-Z "
4999 "board. FPGA not loaded\n");
5000 }
5001#endif 4876#endif
5002 /* The following clears the firmware id word. This 4877 /* The following clears the firmware id word. This
5003 ensures that the driver will not attempt to talk to 4878 ensures that the driver will not attempt to talk to
5004 the board until it has been properly initialized. 4879 the board until it has been properly initialized.
5005 */ 4880 */
5006 if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) 4881 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
5007 cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); 4882 cy_writel(addr2 + ID_ADDRESS, 0L);
5008
5009 /* This must be a Cyclades-8Zo/PCI. The extendable
5010 version will have a different device_id and will
5011 be allocated its maximum number of ports. */
5012 cy_pci_nchan = 8;
5013
5014 if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) {
5015 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
5016 "channels are available. Change NR_PORTS in "
5017 "cyclades.c and recompile kernel.\n");
5018 return -EIO;
5019 }
5020 4883
5021 /* fill the next cy_card structure available */ 4884 /* This must be a Cyclades-8Zo/PCI. The extendable
5022 for (j = 0; j < NR_CARDS; j++) { 4885 version will have a different device_id and will
5023 if (cy_card[j].base_addr == NULL) 4886 be allocated its maximum number of ports. */
5024 break; 4887 nchan = 8;
5025 } 4888 }
5026 if (j == NR_CARDS) { /* no more cy_cards available */ 4889 }
5027 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " 4890
5028 "more cards can be used. Change NR_CARDS in " 4891 if ((cy_next_channel + nchan) > NR_PORTS) {
5029 "cyclades.c and recompile kernel.\n"); 4892 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
5030 return -EIO; 4893 "channels are available. Change NR_PORTS in "
4894 "cyclades.c and recompile kernel.\n");
4895 goto err_unmap;
4896 }
4897 /* fill the next cy_card structure available */
4898 for (card_no = 0; card_no < NR_CARDS; card_no++) {
4899 if (cy_card[card_no].base_addr == NULL)
4900 break;
4901 }
4902 if (card_no == NR_CARDS) { /* no more cy_cards available */
4903 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
4904 "more cards can be used. Change NR_CARDS in "
4905 "cyclades.c and recompile kernel.\n");
4906 goto err_unmap;
4907 }
4908
4909 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
4910 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
4911 /* allocate IRQ */
4912 retval = request_irq(irq, cyy_interrupt,
4913 IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]);
4914 if (retval) {
4915 dev_err(&pdev->dev, "could not allocate IRQ\n");
4916 goto err_unmap;
5031 } 4917 }
4918 cy_card[card_no].num_chips = nchan / 4;
4919 } else {
5032#ifdef CONFIG_CYZ_INTR 4920#ifdef CONFIG_CYZ_INTR
5033 /* allocate IRQ only if board has an IRQ */ 4921 /* allocate IRQ only if board has an IRQ */
5034 if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { 4922 if (irq != 0 && irq != 255) {
5035 retval = request_irq(cy_pci_irq, cyz_interrupt, 4923 retval = request_irq(irq, cyz_interrupt,
5036 IRQF_SHARED, "Cyclades-Z", 4924 IRQF_SHARED, "Cyclades-Z",
5037 &cy_card[j]); 4925 &cy_card[card_no]);
5038 if (retval) { 4926 if (retval) {
5039 dev_err(&pdev->dev, "could not allocate IRQ\n"); 4927 dev_err(&pdev->dev, "could not allocate IRQ\n");
5040 return retval; 4928 goto err_unmap;
5041 } 4929 }
5042 } 4930 }
5043#endif /* CONFIG_CYZ_INTR */ 4931#endif /* CONFIG_CYZ_INTR */
4932 cy_card[card_no].num_chips = -1;
4933 }
5044 4934
5045 /* set cy_card */ 4935 /* set cy_card */
5046 cy_card[j].base_addr = cy_pci_addr2; 4936 cy_card[card_no].base_addr = addr2;
5047 cy_card[j].ctl_addr = cy_pci_addr0; 4937 cy_card[card_no].ctl_addr = addr0;
5048 cy_card[j].irq = cy_pci_irq; 4938 cy_card[card_no].irq = irq;
5049 cy_card[j].bus_index = 1; 4939 cy_card[card_no].bus_index = 1;
5050 cy_card[j].first_line = cy_next_channel; 4940 cy_card[card_no].first_line = cy_next_channel;
5051 cy_card[j].num_chips = -1; 4941 retval = cy_init_card(&cy_card[card_no]);
5052 cy_init_card(&cy_card[j]); 4942 if (retval)
5053 pci_set_drvdata(pdev, &cy_card[j]); 4943 goto err_null;
5054 4944
5055 dev_info(&pdev->dev, "Cyclades-8Zo/PCI #%d found: %d channels " 4945 pci_set_drvdata(pdev, &cy_card[card_no]);
5056 "starting from port %d.\n", j + 1, cy_pci_nchan,
5057 cy_next_channel);
5058 4946
5059 for (j = cy_next_channel; 4947 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
5060 j < cy_next_channel + cy_pci_nchan; j++) 4948 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
5061 tty_register_device(cy_serial_driver, j, &pdev->dev); 4949 /* enable interrupts in the PCI interface */
5062 cy_next_channel += cy_pci_nchan; 4950 plx_ver = readb(addr2 + CyPLX_VER) & 0x0f;
4951 switch (plx_ver) {
4952 case PLX_9050:
4953
4954 cy_writeb(addr0 + 0x4c, 0x43);
4955 break;
4956
4957 case PLX_9060:
4958 case PLX_9080:
4959 default: /* Old boards, use PLX_9060 */
4960
4961 plx_init(addr0, 0x6c);
4962 /* For some yet unknown reason, once the PLX9060 reloads
4963 the EEPROM, the IRQ is lost and, thus, we have to
4964 re-write it to the PCI config. registers.
4965 This will remain here until we find a permanent
4966 fix. */
4967 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
4968
4969 cy_writew(addr0 + 0x68, readw(addr0 + 0x68) | 0x0900);
4970 break;
4971 }
5063 } 4972 }
5064 4973
4974 dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from "
4975 "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel);
4976 for (i = cy_next_channel; i < cy_next_channel + nchan; i++)
4977 tty_register_device(cy_serial_driver, i, &pdev->dev);
4978 cy_next_channel += nchan;
4979
5065 return 0; 4980 return 0;
4981err_null:
4982 cy_card[card_no].base_addr = NULL;
4983 free_irq(irq, &cy_card[card_no]);
4984err_unmap:
4985 pci_iounmap(pdev, addr0);
4986 if (addr2)
4987 pci_iounmap(pdev, addr2);
4988err_reg:
4989 pci_release_regions(pdev);
4990err_dis:
4991 pci_disable_device(pdev);
4992err:
4993 return retval;
5066} 4994}
5067 4995
5068static void __devexit cy_pci_remove(struct pci_dev *pdev) 4996static void __devexit cy_pci_remove(struct pci_dev *pdev)
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-20 20:46:35 -0400