diff options
35 files changed, 13230 insertions, 0 deletions
diff --git a/packages/linux/linux-efika-2.6.20/.mtn2git_empty b/packages/linux/linux-efika-2.6.20/.mtn2git_empty new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/.mtn2git_empty diff --git a/packages/linux/linux-efika-2.6.20/0001-powerpc-serial-Dispose-irq-mapping-when-done-in-mpc52xx_serial.c.txt b/packages/linux/linux-efika-2.6.20/0001-powerpc-serial-Dispose-irq-mapping-when-done-in-mpc52xx_serial.c.txt new file mode 100644 index 0000000000..ef3c42dc30 --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/0001-powerpc-serial-Dispose-irq-mapping-when-done-in-mpc52xx_serial.c.txt @@ -0,0 +1,27 @@ +From 733239db928c98f4d110fc33f0cf1278cf5385ef Mon Sep 17 00:00:00 2001 +From: Sylvain Munaut <tnt@246tNt.com> +Date: Mon, 18 Dec 2006 22:48:02 +0100 +Subject: [PATCH] [PATCH] powerpc/serial: Dispose irq mapping when done in mpc52xx_serial.c + +Signed-off-by: Sylvain Munaut <tnt@246tNt.com> +--- + drivers/serial/mpc52xx_uart.c | 3 +++ + 1 files changed, 3 insertions(+), 0 deletions(-) + +diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c +index 9d11a75..eef3b02 100644 +--- a/drivers/serial/mpc52xx_uart.c ++++ b/drivers/serial/mpc52xx_uart.c +@@ -997,6 +997,9 @@ mpc52xx_uart_of_remove(struct of_device *op) + if (port) + uart_remove_one_port(&mpc52xx_uart_driver, port); + ++ if (port->irq != NO_IRQ) ++ irq_dispose_mapping(port->irq); ++ + return 0; + } + +-- +1.4.4.2 + diff --git a/packages/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt b/packages/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt new file mode 100644 index 0000000000..eddebfe2e7 --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/0003-powerpc-Add-device-tree-fixups-for-the-EFIKA.txt @@ -0,0 +1,110 @@ +From 7fa32df37b889fd0520b28870153b711c65192d2 Mon Sep 17 00:00:00 2001 +From: Sylvain Munaut <tnt@246tNt.com> +Date: Sat, 23 Dec 2006 20:25:18 +0100 +Subject: [PATCH] [PATCH] powerpc: Add device tree fixups for the EFIKA + +We make the efika device tree compliant with the defined bindings +(at least compliant enough). This is mostly done by mangling +the device_type and compatible properties, but also adding +some missing bits. + +Signed-off-by: Sylvain Munaut <tnt@246tNt.com> +--- + arch/powerpc/kernel/prom_init.c | 76 +++++++++++++++++++++++++++++++++++++++ + 1 files changed, 76 insertions(+), 0 deletions(-) + +diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c +index 520ef42..5291d62 100644 +--- a/arch/powerpc/kernel/prom_init.c ++++ b/arch/powerpc/kernel/prom_init.c +@@ -2117,11 +2117,87 @@ static void __init fixup_device_tree_pmac(void) + #define fixup_device_tree_pmac() + #endif + ++#ifdef CONFIG_PPC_EFIKA ++/* The current fw of the Efika has a device tree needs quite a few ++ * fixups to be compliant with the mpc52xx bindings. It's currently ++ * unknown if it will ever be compliant (come on bPlan ...) so we do fixups. ++ * NOTE that we (barely) tolerate it because the EFIKA was out before ++ * the bindings were finished, for any new boards -> RTFM ! */ ++ ++struct subst_entry { ++ char *path; ++ char *property; ++ void *value; ++ int value_len; ++}; ++ ++static void __init fixup_device_tree_efika(void) ++{ ++ /* Substitution table */ ++ #define prop_cstr(x) x, sizeof(x) ++ int prop_sound_irq[3] = { 2, 2, 0 }; ++ struct subst_entry efika_subst_table[] = { ++ { "/", "device_type", prop_cstr("efika") }, ++ { "/builtin", "compatible", prop_cstr("soc") }, ++ { "/builtin/ata", "compatible", prop_cstr("mpc5200b-ata\0mpc52xx-ata"), }, ++ { "/builtin/bestcomm", "compatible", prop_cstr("mpc5200b-bestcomm\0mpc52xx-bestcomm") }, ++ { "/builtin/ethernet", "compatible", prop_cstr("mpc5200b-fec\0mpc52xx-fec") }, ++ { "/builtin/pic", "compatible", prop_cstr("mpc5200b-pic\0mpc52xx-pic") }, ++ { "/builtin/serial", "compatible", prop_cstr("mpc5200b-psc-uart\0mpc52xx-psc-uart") }, ++ { "/builtin/sound", "compatible", prop_cstr("mpc5200b-psc-ac97\0mpc52xx-psc-ac97") }, ++ { "/builtin/sound", "interrupts", prop_sound_irq, sizeof(prop_sound_irq) }, ++ { "/builtin/sram", "compatible", prop_cstr("mpc5200b-sram\0mpc52xx-sram") }, ++ { "/builtin/sram", "device_type", prop_cstr("sram") }, ++ {} ++ }; ++ #undef prop_cstr ++ ++ /* Vars */ ++ u32 node; ++ char prop[64]; ++ int rv, i; ++ ++ /* Check if we're really running on a EFIKA */ ++ node = call_prom("finddevice", 1, 1, ADDR("/")); ++ if (!PHANDLE_VALID(node)) ++ return; ++ ++ rv = prom_getprop(node, "model", prop, sizeof(prop)); ++ if (rv == PROM_ERROR) ++ return; ++ if (strcmp(prop, "EFIKA5K2")) ++ return; ++ ++ prom_printf("Applying EFIKA device tree fixups\n"); ++ ++ /* Process substitution table */ ++ for (i=0; efika_subst_table[i].path; i++) { ++ struct subst_entry *se = &efika_subst_table[i]; ++ ++ node = call_prom("finddevice", 1, 1, ADDR(se->path)); ++ if (!PHANDLE_VALID(node)) { ++ prom_printf("fixup_device_tree_efika: ", ++ "skipped entry %x - not found\n", i); ++ continue; ++ } ++ ++ rv = prom_setprop(node, se->path, se->property, ++ se->value, se->value_len ); ++ if (rv == PROM_ERROR) ++ prom_printf("fixup_device_tree_efika: ", ++ "skipped entry %x - setprop error\n", i); ++ } ++} ++#else ++#define fixup_device_tree_efika() ++#endif ++ + static void __init fixup_device_tree(void) + { + fixup_device_tree_maple(); + fixup_device_tree_chrp(); + fixup_device_tree_pmac(); ++ fixup_device_tree_efika(); + } + + static void __init prom_find_boot_cpu(void) +-- +1.4.4.2 + diff --git a/packages/linux/linux-efika-2.6.20/0004-powerpc-Use-common-52xx-of_platform-probe-code-for-EFIKA.txt b/packages/linux/linux-efika-2.6.20/0004-powerpc-Use-common-52xx-of_platform-probe-code-for-EFIKA.txt new file mode 100644 index 0000000000..763d53208f --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/0004-powerpc-Use-common-52xx-of_platform-probe-code-for-EFIKA.txt @@ -0,0 +1,106 @@ +From ae911446f91481cf26e6dc5edef034a50a6c410c Mon Sep 17 00:00:00 2001 +From: Sylvain Munaut <tnt@246tNt.com> +Date: Sat, 23 Dec 2006 20:33:30 +0100 +Subject: [PATCH] [PATCH] powerpc: Use common 52xx of_platform probe code for EFIKA + +Now that the device tree has the good properties, we can +remove all the efika_init code by a single call to common code. + +While we're modifying that file, a few whitespaces/alignement/typo +fixes are made (nothing significant). + +Signed-off-by: Sylvain Munaut <tnt@246tNt.com> +--- + arch/powerpc/platforms/52xx/efika-setup.c | 64 ++++++++--------------------- + 1 files changed, 18 insertions(+), 46 deletions(-) + +diff --git a/arch/powerpc/platforms/52xx/efika-setup.c b/arch/powerpc/platforms/52xx/efika-setup.c +index 110c980..d61ce84 100644 +--- a/arch/powerpc/platforms/52xx/efika-setup.c ++++ b/arch/powerpc/platforms/52xx/efika-setup.c +@@ -2,7 +2,7 @@ + * + * Efika 5K2 platform setup + * Some code really inspired from the lite5200b platform. +- * ++ * + * Copyright (C) 2006 bplan GmbH + * + * This file is licensed under the terms of the GNU General Public License +@@ -81,35 +81,7 @@ static void __init efika_setup_arch(void) + efika_pcisetup(); + + if (ppc_md.progress) +- ppc_md.progress("Linux/PPC " UTS_RELEASE " runnung on Efika ;-)\n", 0x0); +-} +- +-static void __init efika_init(void) +-{ +- struct device_node *np; +- struct device_node *cnp = NULL; +- const u32 *base; +- +- /* Find every child of the SOC node and add it to of_platform */ +- np = of_find_node_by_name(NULL, "builtin"); +- if (np) { +- char name[BUS_ID_SIZE]; +- while ((cnp = of_get_next_child(np, cnp))) { +- strcpy(name, cnp->name); +- +- base = get_property(cnp, "reg", NULL); +- if (base == NULL) +- continue; +- +- snprintf(name+strlen(name), BUS_ID_SIZE, "@%x", *base); +- of_platform_device_create(cnp, name, NULL); +- +- printk(KERN_INFO EFIKA_PLATFORM_NAME" : Added %s (type '%s' at '%s') to the known devices\n", name, cnp->type, cnp->full_name); +- } +- } +- +- if (ppc_md.progress) +- ppc_md.progress(" Have fun with your Efika! ", 0x7777); ++ ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0); + } + + static int __init efika_probe(void) +@@ -131,20 +103,20 @@ static int __init efika_probe(void) + + define_machine(efika) + { +- .name = EFIKA_PLATFORM_NAME, +- .probe = efika_probe, +- .setup_arch = efika_setup_arch, +- .init = efika_init, +- .show_cpuinfo = efika_show_cpuinfo, +- .init_IRQ = mpc52xx_init_irq, +- .get_irq = mpc52xx_get_irq, +- .restart = rtas_restart, +- .power_off = rtas_power_off, +- .halt = rtas_halt, +- .set_rtc_time = rtas_set_rtc_time, +- .get_rtc_time = rtas_get_rtc_time, +- .progress = rtas_progress, +- .get_boot_time = rtas_get_boot_time, +- .calibrate_decr = generic_calibrate_decr, +- .phys_mem_access_prot = pci_phys_mem_access_prot, ++ .name = EFIKA_PLATFORM_NAME, ++ .probe = efika_probe, ++ .setup_arch = efika_setup_arch, ++ .init = mpc52xx_declare_of_platform_devices, ++ .show_cpuinfo = efika_show_cpuinfo, ++ .init_IRQ = mpc52xx_init_irq, ++ .get_irq = mpc52xx_get_irq, ++ .restart = rtas_restart, ++ .power_off = rtas_power_off, ++ .halt = rtas_halt, ++ .set_rtc_time = rtas_set_rtc_time, ++ .get_rtc_time = rtas_get_rtc_time, ++ .progress = rtas_progress, ++ .get_boot_time = rtas_get_boot_time, ++ .calibrate_decr = generic_calibrate_decr, ++ .phys_mem_access_prot = pci_phys_mem_access_prot, + }; +-- +1.4.4.2 + diff --git a/packages/linux/linux-efika-2.6.20/0005-powerpc-Restore-proper-link-order-in-platform.txt b/packages/linux/linux-efika-2.6.20/0005-powerpc-Restore-proper-link-order-in-platform.txt new file mode 100644 index 0000000000..0b4bbe3376 --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/0005-powerpc-Restore-proper-link-order-in-platform.txt @@ -0,0 +1,33 @@ +From 720e2caeeff0d9585d5627d29ffd660a5a9d9f88 Mon Sep 17 00:00:00 2001 +From: Sylvain Munaut <tnt@246tNt.com> +Date: Sat, 23 Dec 2006 20:43:39 +0100 +Subject: [PATCH] [PATCH] powerpc: Restore 'proper' link order in platform + +The 52xx was put before CHRP to allow EFIKA to be recognized +properly. Now the efika tree is fixed up in prom_init so +no need for this ugly hack. So we restore the 'normal' +order. + +Signed-off-by: Sylvain Munaut <tnt@246tNt.com> +--- + arch/powerpc/platforms/Makefile | 2 +- + 1 files changed, 1 insertions(+), 1 deletions(-) + +diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile +index 507d1b9..44d95ea 100644 +--- a/arch/powerpc/platforms/Makefile ++++ b/arch/powerpc/platforms/Makefile +@@ -5,9 +5,9 @@ ifeq ($(CONFIG_PPC64),y) + obj-$(CONFIG_PPC_PMAC) += powermac/ + endif + endif +-obj-$(CONFIG_PPC_MPC52xx) += 52xx/ + obj-$(CONFIG_PPC_CHRP) += chrp/ + obj-$(CONFIG_4xx) += 4xx/ ++obj-$(CONFIG_PPC_MPC52xx) += 52xx/ + obj-$(CONFIG_PPC_83xx) += 83xx/ + obj-$(CONFIG_PPC_85xx) += 85xx/ + obj-$(CONFIG_PPC_86xx) += 86xx/ +-- +1.4.4.2 + diff --git a/packages/linux/linux-efika-2.6.20/0006-Rework-the-OHCI-quirk-mecanism-as-suggested-by-David.txt b/packages/linux/linux-efika-2.6.20/0006-Rework-the-OHCI-quirk-mecanism-as-suggested-by-David.txt new file mode 100644 index 0000000000..39f6fef607 --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/0006-Rework-the-OHCI-quirk-mecanism-as-suggested-by-David.txt @@ -0,0 +1,236 @@ +From 9282a04f14cef512736ac4a895fb48456e6a8989 Mon Sep 17 00:00:00 2001 +From: Benjamin Herrenschmidt <benh@kernel.crashing.org> +Date: Thu, 14 Dec 2006 14:13:26 +1100 +Subject: [PATCH] [PATCH] Rework the OHCI quirk mecanism as suggested by David + +This patch applies David Brownell's suggestion for reworking the +OHCI quirk mechanism via a table of PCI IDs. It adapts the existing +quirks to use that mechanism. + +This also moves the quirks to reset() as suggested by the comment +in there. This is necessary as we need to have the endian properly +set before we try to init the controller. + +Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> +Acked-by: David Brownell <dbrownell@users.sourceforge.net> + + drivers/usb/host/ohci-pci.c | 173 +++++++++++++++++++++++++++----------------- + 1 file changed, 110 insertions(+), 63 deletions(-) +--- + drivers/usb/host/ohci-pci.c | 173 +++++++++++++++++++++++++++---------------- + 1 files changed, 110 insertions(+), 63 deletions(-) + +diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c +index 596e0b4..82fbec3 100644 +--- a/drivers/usb/host/ohci-pci.c ++++ b/drivers/usb/host/ohci-pci.c +@@ -20,79 +20,128 @@ + + /*-------------------------------------------------------------------------*/ + +-static int +-ohci_pci_reset (struct usb_hcd *hcd) ++/* AMD 756, for most chips (early revs), corrupts register ++ * values on read ... so enable the vendor workaround. ++ */ ++static int __devinit ohci_quirk_amd756(struct usb_hcd *hcd) + { + struct ohci_hcd *ohci = hcd_to_ohci (hcd); + +- ohci_hcd_init (ohci); +- return ohci_init (ohci); ++ ohci->flags = OHCI_QUIRK_AMD756; ++ ohci_dbg (ohci, "AMD756 erratum 4 workaround\n"); ++ ++ /* also erratum 10 (suspend/resume issues) */ ++ device_init_wakeup(&hcd->self.root_hub->dev, 0); ++ ++ return 0; + } + +-static int __devinit +-ohci_pci_start (struct usb_hcd *hcd) ++/* Apple's OHCI driver has a lot of bizarre workarounds ++ * for this chip. Evidently control and bulk lists ++ * can get confused. (B&W G3 models, and ...) ++ */ ++static int __devinit ohci_quirk_opti(struct usb_hcd *hcd) + { + struct ohci_hcd *ohci = hcd_to_ohci (hcd); +- int ret; + +- /* REVISIT this whole block should move to reset(), which handles +- * all the other one-time init. ++ ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n"); ++ ++ return 0; ++} ++ ++/* Check for NSC87560. We have to look at the bridge (fn1) to ++ * identify the USB (fn2). This quirk might apply to more or ++ * even all NSC stuff. ++ */ ++static int __devinit ohci_quirk_ns(struct usb_hcd *hcd) ++{ ++ struct pci_dev *pdev = to_pci_dev(hcd->self.controller); ++ struct pci_dev *b; ++ ++ b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1)); ++ if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO ++ && b->vendor == PCI_VENDOR_ID_NS) { ++ struct ohci_hcd *ohci = hcd_to_ohci (hcd); ++ ++ ohci->flags |= OHCI_QUIRK_SUPERIO; ++ ohci_dbg (ohci, "Using NSC SuperIO setup\n"); ++ } ++ pci_dev_put(b); ++ ++ return 0; ++} ++ ++/* Check for Compaq's ZFMicro chipset, which needs short ++ * delays before control or bulk queues get re-activated ++ * in finish_unlinks() ++ */ ++static int __devinit ohci_quirk_zfmicro(struct usb_hcd *hcd) ++{ ++ struct ohci_hcd *ohci = hcd_to_ohci (hcd); ++ ++ ohci->flags |= OHCI_QUIRK_ZFMICRO; ++ ohci_dbg (ohci, "enabled Compaq ZFMicro chipset quirk\n"); ++ ++ return 0; ++} ++ ++ ++/* List of quirks for OHCI */ ++static const struct pci_device_id ohci_pci_quirks[] = { ++ { ++ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c), ++ .driver_data = (unsigned long)ohci_quirk_amd756, ++ }, ++ { ++ PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861), ++ .driver_data = (unsigned long)ohci_quirk_opti, ++ }, ++ { ++ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID), ++ .driver_data = (unsigned long)ohci_quirk_ns, ++ }, ++ { ++ PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8), ++ .driver_data = (unsigned long)ohci_quirk_zfmicro, ++ }, ++ /* FIXME for some of the early AMD 760 southbridges, OHCI ++ * won't work at all. blacklist them. + */ ++ {}, ++}; ++ ++static int ohci_pci_reset (struct usb_hcd *hcd) ++{ ++ struct ohci_hcd *ohci = hcd_to_ohci (hcd); ++ int ret = 0; ++ + if (hcd->self.controller) { + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); ++ const struct pci_device_id *quirk_id; + +- /* AMD 756, for most chips (early revs), corrupts register +- * values on read ... so enable the vendor workaround. +- */ +- if (pdev->vendor == PCI_VENDOR_ID_AMD +- && pdev->device == 0x740c) { +- ohci->flags = OHCI_QUIRK_AMD756; +- ohci_dbg (ohci, "AMD756 erratum 4 workaround\n"); +- /* also erratum 10 (suspend/resume issues) */ +- device_init_wakeup(&hcd->self.root_hub->dev, 0); ++ quirk_id = pci_match_id(ohci_pci_quirks, pdev); ++ if (quirk_id != NULL) { ++ int (*quirk)(struct usb_hcd *ohci); ++ quirk = (void *)quirk_id->driver_data; ++ ret = quirk(hcd); + } ++ } ++ if (ret == 0) { ++ ohci_hcd_init (ohci); ++ return ohci_init (ohci); ++ } ++ return ret; ++} + +- /* FIXME for some of the early AMD 760 southbridges, OHCI +- * won't work at all. blacklist them. +- */ +- +- /* Apple's OHCI driver has a lot of bizarre workarounds +- * for this chip. Evidently control and bulk lists +- * can get confused. (B&W G3 models, and ...) +- */ +- else if (pdev->vendor == PCI_VENDOR_ID_OPTI +- && pdev->device == 0xc861) { +- ohci_dbg (ohci, +- "WARNING: OPTi workarounds unavailable\n"); +- } + +- /* Check for NSC87560. We have to look at the bridge (fn1) to +- * identify the USB (fn2). This quirk might apply to more or +- * even all NSC stuff. +- */ +- else if (pdev->vendor == PCI_VENDOR_ID_NS) { +- struct pci_dev *b; +- +- b = pci_get_slot (pdev->bus, +- PCI_DEVFN (PCI_SLOT (pdev->devfn), 1)); +- if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO +- && b->vendor == PCI_VENDOR_ID_NS) { +- ohci->flags |= OHCI_QUIRK_SUPERIO; +- ohci_dbg (ohci, "Using NSC SuperIO setup\n"); +- } +- pci_dev_put(b); +- } ++static int __devinit ohci_pci_start (struct usb_hcd *hcd) ++{ ++ struct ohci_hcd *ohci = hcd_to_ohci (hcd); ++ int ret; + +- /* Check for Compaq's ZFMicro chipset, which needs short +- * delays before control or bulk queues get re-activated +- * in finish_unlinks() +- */ +- else if (pdev->vendor == PCI_VENDOR_ID_COMPAQ +- && pdev->device == 0xa0f8) { +- ohci->flags |= OHCI_QUIRK_ZFMICRO; +- ohci_dbg (ohci, +- "enabled Compaq ZFMicro chipset quirk\n"); +- } ++#ifdef CONFIG_PM /* avoid warnings about unused pdev */ ++ if (hcd->self.controller) { ++ struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + + /* RWC may not be set for add-in PCI cards, since boot + * firmware probably ignored them. This transfers PCI +@@ -101,16 +150,14 @@ ohci_pci_start (struct usb_hcd *hcd) + if (device_may_wakeup(&pdev->dev)) + ohci->hc_control |= OHCI_CTRL_RWC; + } ++#endif /* CONFIG_PM */ + +- /* NOTE: there may have already been a first reset, to +- * keep bios/smm irqs from making trouble +- */ +- if ((ret = ohci_run (ohci)) < 0) { ++ ret = ohci_run (ohci); ++ if (ret < 0) { + ohci_err (ohci, "can't start\n"); + ohci_stop (hcd); +- return ret; + } +- return 0; ++ return ret; + } + + #ifdef CONFIG_PM +-- +1.4.4.2 + diff --git a/packages/linux/linux-efika-2.6.20/0007-Implement-support-for-split-endian-OHCI.txt b/packages/linux/linux-efika-2.6.20/0007-Implement-support-for-split-endian-OHCI.txt new file mode 100644 index 0000000000..f49e0cfa7d --- /dev/null +++ b/packages/linux/linux-efika-2.6.20/0007-Implement-support-for-split-endian-OHCI.txt @@ -0,0 +1,367 @@ +From a87f8738eb3651b7eea1feae793def3a48dc36c6 Mon Sep 17 00:00:00 2001 +From: Benjamin Herrenschmidt <benh@kernel.crashing.org> +Date: Thu, 14 Dec 2006 14:13:28 +1100 +Subject: [PATCH] [PATCH] Implement support for "split" endian OHCI + +This patch separates support for big endian MMIO register access +and big endian descriptors in order to support the Toshiba SCC +implementation which has big endian registers but little endian +in-memory descriptors. + +It simplifies the access functions a bit in ohci.h while at it. + +Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> +Acked-by: David Brownell <dbrownell@users.sourceforge.net> + + drivers/usb/host/Kconfig | 10 ++ + drivers/usb/host/ohci-pci.c | 26 +++++++ + drivers/usb/host/ohci-ppc-soc.c | 2 + drivers/usb/host/ohci.h | 147 +++++++++++++++++++++++++--------------- + 4 files changed, 130 insertions(+), 55 deletions(-) +--- + drivers/usb/host/Kconfig | 10 ++- + drivers/usb/host/ohci-pci.c | 26 +++++++ + drivers/usb/host/ohci-ppc-soc.c | 2 +- + drivers/usb/host/ohci.h | 147 +++++++++++++++++++++++++-------------- + 4 files changed, 130 insertions(+), 55 deletions(-) + +diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig +index cc60759..faabce8 100644 +--- a/drivers/usb/host/Kconfig ++++ b/drivers/usb/host/Kconfig +@@ -101,7 +101,8 @@ config USB_OHCI_HCD_PPC_SOC + bool "OHCI support for on-chip PPC USB controller" + depends on USB_OHCI_HCD && (STB03xxx || PPC_MPC52xx) + default y +- select USB_OHCI_BIG_ENDIAN ++ select USB_OHCI_BIG_ENDIAN_DESC ++ select USB_OHCI_BIG_ENDIAN_MMIO + ---help--- + Enables support for the USB controller on the MPC52xx or + STB03xxx processor chip. If unsure, say Y. +@@ -115,7 +116,12 @@ config USB_OHCI_HCD_PCI + Enables support for PCI-bus plug-in USB controller cards. + If unsure, say Y. + +-config USB_OHCI_BIG_ENDIAN ++config USB_OHCI_BIG_ENDIAN_DESC ++ bool ++ depends on USB_OHCI_HCD ++ default n ++ ++config USB_OHCI_BIG_ENDIAN_MMIO + bool + depends on USB_OHCI_HCD + default n +diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c +index 82fbec3..292daf0 100644 +--- a/drivers/usb/host/ohci-pci.c ++++ b/drivers/usb/host/ohci-pci.c +@@ -85,6 +85,27 @@ static int __devinit ohci_quirk_zfmicro(struct usb_hcd *hcd) + return 0; + } + ++/* Check for Toshiba SCC OHCI which has big endian registers ++ * and little endian in memory data structures ++ */ ++static int __devinit ohci_quirk_toshiba_scc(struct usb_hcd *hcd) ++{ ++ struct ohci_hcd *ohci = hcd_to_ohci (hcd); ++ ++ /* That chip is only present in the southbridge of some ++ * cell based platforms which are supposed to select ++ * CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if ++ * that was the case though. ++ */ ++#ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO ++ ohci->flags |= OHCI_QUIRK_BE_MMIO; ++ ohci_dbg (ohci, "enabled big endian Toshiba quirk\n"); ++ return 0; ++#else ++ ohci_err (ohci, "unsupported big endian Toshiba quirk\n"); ++ return -ENXIO; ++#endif ++} + + /* List of quirks for OHCI */ + static const struct pci_device_id ohci_pci_quirks[] = { +@@ -104,9 +125,14 @@ static const struct pci_device_id ohci_pci_quirks[] = { + PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8), + .driver_data = (unsigned long)ohci_quirk_zfmicro, + }, ++ { ++ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6), ++ .driver_data = (unsigned long)ohci_quirk_toshiba_scc, ++ }, + /* FIXME for some of the early AMD 760 southbridges, OHCI + * won't work at all. blacklist them. + */ ++ + {}, + }; + +diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c +index e1a7eb8..c7ce8e6 100644 +--- a/drivers/usb/host/ohci-ppc-soc.c ++++ b/drivers/usb/host/ohci-ppc-soc.c +@@ -72,7 +72,7 @@ static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver, + } + + ohci = hcd_to_ohci(hcd); +- ohci->flags |= OHCI_BIG_ENDIAN; ++ ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC; + ohci_hcd_init(ohci); + + retval = usb_add_hcd(hcd, irq, IRQF_DISABLED); +diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h +index 405257f..fc7c161 100644 +--- a/drivers/usb/host/ohci.h ++++ b/drivers/usb/host/ohci.h +@@ -394,8 +394,9 @@ struct ohci_hcd { + #define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */ + #define OHCI_QUIRK_SUPERIO 0x02 /* natsemi */ + #define OHCI_QUIRK_INITRESET 0x04 /* SiS, OPTi, ... */ +-#define OHCI_BIG_ENDIAN 0x08 /* big endian HC */ +-#define OHCI_QUIRK_ZFMICRO 0x10 /* Compaq ZFMicro chipset*/ ++#define OHCI_QUIRK_BE_DESC 0x08 /* BE descriptors */ ++#define OHCI_QUIRK_BE_MMIO 0x10 /* BE registers */ ++#define OHCI_QUIRK_ZFMICRO 0x20 /* Compaq ZFMicro chipset*/ + // there are also chip quirks/bugs in init logic + + }; +@@ -439,117 +440,156 @@ static inline struct usb_hcd *ohci_to_hcd (const struct ohci_hcd *ohci) + * a minority (notably the IBM STB04XXX and the Motorola MPC5200 + * processors) implement them in big endian format. + * ++ * In addition some more exotic implementations like the Toshiba ++ * Spider (aka SCC) cell southbridge are "mixed" endian, that is, ++ * they have a different endianness for registers vs. in-memory ++ * descriptors. ++ * + * This attempts to support either format at compile time without a + * runtime penalty, or both formats with the additional overhead + * of checking a flag bit. ++ * ++ * That leads to some tricky Kconfig rules howevber. There are ++ * different defaults based on some arch/ppc platforms, though ++ * the basic rules are: ++ * ++ * Controller type Kconfig options needed ++ * --------------- ---------------------- ++ * little endian CONFIG_USB_OHCI_LITTLE_ENDIAN ++ |