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linux/arch/mips/ath79/pci.h

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MIPS: Initial PCI support for Atheros 724x SoCs. [ralf@linux-mips.org: Fixed the odd formatting of all break statements.] Signed-off-by: Rene Bolldorf <xsecute@googlemail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/3019/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-11-17 14:25:09 +00:00
/*
* Atheros 724x PCI support
*
* Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
MIPS: ath79: replace ath724x to ar724x Replace the 'ath724x' to 'ar724x' in function, variable and structure names to reflect the name of the real SoC. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: René Bolldorf <xsecute@googlemail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3490/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:29:26 +00:00
#ifndef _ATH79_PCI_H
#define _ATH79_PCI_H
MIPS: Initial PCI support for Atheros 724x SoCs. [ralf@linux-mips.org: Fixed the odd formatting of all break statements.] Signed-off-by: Rene Bolldorf <xsecute@googlemail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/3019/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-11-17 14:25:09 +00:00
MIPS: ath79: allow to use SoC specific PCI IRQ maps The PCI controllers in the AR71XX and in the AR724X SoCs are different, and both of them uses different IRQ wiring. The patch modifies the 'pcibios_map_irq' function in order to allow to use different IRQ maps for the different SoCs. The patch also adds a function, which lets the board setup code to override the default IRQ map. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3500/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:36:11 +00:00
struct ath79_pci_irq {
u8 slot;
u8 pin;
int irq;
};
MIPS: ath79: add a common PCI registration function The current code unconditionally registers the AR724X specific PCI controller, even if the kernel is running on a different SoC. Add a common function for PCI controller registration, and only register the AR724X PCI controller if the kernel is running on an AR724X SoC. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3488/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:29:24 +00:00
#ifdef CONFIG_PCI
MIPS: ath79: allow to use SoC specific PCI IRQ maps The PCI controllers in the AR71XX and in the AR724X SoCs are different, and both of them uses different IRQ wiring. The patch modifies the 'pcibios_map_irq' function in order to allow to use different IRQ maps for the different SoCs. The patch also adds a function, which lets the board setup code to override the default IRQ map. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3500/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:36:11 +00:00
void ath79_pci_set_irq_map(unsigned nr_irqs, const struct ath79_pci_irq *map);
MIPS: ath79: allow to use board specific pci_plat_dev_init functions Th current implementation causes NULL pointer dereference if 'pci_data' is not set: pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1000ffff 64bit] pci 0000:00:00.0: BAR 0: set to [mem 0x10000000-0x1000ffff 64bit] (PCI address [0x10000000-0x1000ffff]) CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 802daca0, ra == 802e78a4 Oops[#1]: Cpu 0 $ 0 : 00000000 80420000 00000000 00000000 $ 4 : 00000000 00000000 00000001 00000001 $ 8 : 00000001 0000032c 81c54700 00000001 $12 : 0000032d 0000000f 00000000 ffffffff $16 : 81c14c00 00000001 802dac74 80195f98 $20 : 802ea050 00000000 00000000 00000000 $24 : 00000003 800617f0 $28 : 81c20000 81c21e70 00000000 802e78a4 Hi : 00000000 Lo : 4190ab00 epc : 802daca0 0x802daca0 Not tainted ra : 802e78a4 0x802e78a4 Status: 1000c003 KERNEL EXL IE Cause : 00800008 BadVA : 00000000 PrId : 00019374 (MIPS 24Kc) Modules linked in: Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000) Stack : 00000000 8027d5d8 802e8ae0 00000000 01000000 802e8b5c 81c50600 00000000 802ff290 00000000 80420000 802ea0bc 00000000 00000000 80420000 802ff290 80420000 80060930 33390000 00000000 00002308 80140a80 00000028 802d0000 00000000 800ba024 802ff004 802ff0c8 802ff290 00000000 00000000 00000000 00000000 802d897c 01234567 7f827068 00000000 0045f798 00460000 00000000 This can be avoided by calling the 'ar724x_pci_add_data' function from the board specific setup code. However it makes no sense to use that function for every board, especially when the board does not needs to set the platform_data field of any PCI device. The patch allows the board setup code to specify a board specific function if that is required. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:36:09 +00:00
void ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev));
MIPS: ath79: add a common PCI registration function The current code unconditionally registers the AR724X specific PCI controller, even if the kernel is running on a different SoC. Add a common function for PCI controller registration, and only register the AR724X PCI controller if the kernel is running on an AR724X SoC. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3488/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:29:24 +00:00
int ath79_register_pci(void);
#else
MIPS: ath79: allow to use board specific pci_plat_dev_init functions Th current implementation causes NULL pointer dereference if 'pci_data' is not set: pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1000ffff 64bit] pci 0000:00:00.0: BAR 0: set to [mem 0x10000000-0x1000ffff 64bit] (PCI address [0x10000000-0x1000ffff]) CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 802daca0, ra == 802e78a4 Oops[#1]: Cpu 0 $ 0 : 00000000 80420000 00000000 00000000 $ 4 : 00000000 00000000 00000001 00000001 $ 8 : 00000001 0000032c 81c54700 00000001 $12 : 0000032d 0000000f 00000000 ffffffff $16 : 81c14c00 00000001 802dac74 80195f98 $20 : 802ea050 00000000 00000000 00000000 $24 : 00000003 800617f0 $28 : 81c20000 81c21e70 00000000 802e78a4 Hi : 00000000 Lo : 4190ab00 epc : 802daca0 0x802daca0 Not tainted ra : 802e78a4 0x802e78a4 Status: 1000c003 KERNEL EXL IE Cause : 00800008 BadVA : 00000000 PrId : 00019374 (MIPS 24Kc) Modules linked in: Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000) Stack : 00000000 8027d5d8 802e8ae0 00000000 01000000 802e8b5c 81c50600 00000000 802ff290 00000000 80420000 802ea0bc 00000000 00000000 80420000 802ff290 80420000 80060930 33390000 00000000 00002308 80140a80 00000028 802d0000 00000000 800ba024 802ff004 802ff0c8 802ff290 00000000 00000000 00000000 00000000 802d897c 01234567 7f827068 00000000 0045f798 00460000 00000000 This can be avoided by calling the 'ar724x_pci_add_data' function from the board specific setup code. However it makes no sense to use that function for every board, especially when the board does not needs to set the platform_data field of any PCI device. The patch allows the board setup code to specify a board specific function if that is required. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:36:09 +00:00
static inline void
MIPS: ath79: allow to use SoC specific PCI IRQ maps The PCI controllers in the AR71XX and in the AR724X SoCs are different, and both of them uses different IRQ wiring. The patch modifies the 'pcibios_map_irq' function in order to allow to use different IRQ maps for the different SoCs. The patch also adds a function, which lets the board setup code to override the default IRQ map. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3500/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:36:11 +00:00
ath79_pci_set_irq_map(unsigned nr_irqs, const struct ath79_pci_irq *map) {}
static inline void
MIPS: ath79: allow to use board specific pci_plat_dev_init functions Th current implementation causes NULL pointer dereference if 'pci_data' is not set: pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1000ffff 64bit] pci 0000:00:00.0: BAR 0: set to [mem 0x10000000-0x1000ffff 64bit] (PCI address [0x10000000-0x1000ffff]) CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 802daca0, ra == 802e78a4 Oops[#1]: Cpu 0 $ 0 : 00000000 80420000 00000000 00000000 $ 4 : 00000000 00000000 00000001 00000001 $ 8 : 00000001 0000032c 81c54700 00000001 $12 : 0000032d 0000000f 00000000 ffffffff $16 : 81c14c00 00000001 802dac74 80195f98 $20 : 802ea050 00000000 00000000 00000000 $24 : 00000003 800617f0 $28 : 81c20000 81c21e70 00000000 802e78a4 Hi : 00000000 Lo : 4190ab00 epc : 802daca0 0x802daca0 Not tainted ra : 802e78a4 0x802e78a4 Status: 1000c003 KERNEL EXL IE Cause : 00800008 BadVA : 00000000 PrId : 00019374 (MIPS 24Kc) Modules linked in: Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000) Stack : 00000000 8027d5d8 802e8ae0 00000000 01000000 802e8b5c 81c50600 00000000 802ff290 00000000 80420000 802ea0bc 00000000 00000000 80420000 802ff290 80420000 80060930 33390000 00000000 00002308 80140a80 00000028 802d0000 00000000 800ba024 802ff004 802ff0c8 802ff290 00000000 00000000 00000000 00000000 802d897c 01234567 7f827068 00000000 0045f798 00460000 00000000 This can be avoided by calling the 'ar724x_pci_add_data' function from the board specific setup code. However it makes no sense to use that function for every board, especially when the board does not needs to set the platform_data field of any PCI device. The patch allows the board setup code to specify a board specific function if that is required. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:36:09 +00:00
ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *)) {}
MIPS: ath79: add a common PCI registration function The current code unconditionally registers the AR724X specific PCI controller, even if the kernel is running on a different SoC. Add a common function for PCI controller registration, and only register the AR724X PCI controller if the kernel is running on an AR724X SoC. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3488/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:29:24 +00:00
static inline int ath79_register_pci(void) { return 0; }
#endif
MIPS: ath79: replace ath724x to ar724x Replace the 'ath724x' to 'ar724x' in function, variable and structure names to reflect the name of the real SoC. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: René Bolldorf <xsecute@googlemail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3490/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-14 09:29:26 +00:00
#endif /* _ATH79_PCI_H */
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