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* powerpc/qe: Implement qe_alive_during_sleep() helper functionAnton Vorontsov2009-08-301-0/+13
| | | | | | | | | | | | | In some CPUs (i.e. MPC8569) QE shuts down completely during sleep, drivers may want to know that to reinitialize registers and buffer descriptors. This patch implements qe_alive_during_sleep() helper function, so far it just checks if MPC8569-compatible power management controller is present, which is a sign that QE turns off during sleep. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* powerpc/qe: add polling timeout to qe_issue_cmd()Timur Tabi2009-06-231-3/+6
| | | | | | | | | | | The qe_issue_cmd() function (Freescale PowerPC QUICC Engine library) polls on a register until a status bit changes, but does not include a timeout to handle the situation if the bit never changes. Change the code to use the new spin_event_timeout() macro, which simplifies polling on a register without a timeout. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/qe: update QE Serial NumberHaiying Wang2009-05-191-4/+43
| | | | | | | | | | | | | | | | The latest QE chip may have more Serial Number(SNUM)s of thread to use. We will get the number of SNUMs from device tree by reading the new property "fsl,qe-num-snums", and set 28 as the default number of SNUMs so that it is compatible with the old QE chips' device trees which don't have this new property. The macro QE_NUM_OF_SNUM is defined as the maximum number in QE snum table which is 256. Also we update the snum_init[] array with 18 more new SNUMs which are confirmed to be useful on new chip. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/qe: update risc allocation for QEHaiying Wang2009-05-191-0/+28
| | | | | | | | | | | Change the RISC allocation to macros instead of enum, add function to read the number of risc engines from the new property "fsl,qe-num-riscs" under the qe node in dts. Add new property "fsl,qe-num-riscs" description in qe.txt Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/qe: Move cmxgcr_lock definition from the ucc.c into the qe.cAnton Vorontsov2008-12-031-0/+3
| | | | | | | | | | | | | | | | | With this patch we can compile the qe_lib/usb.c without the UCC support (that is, without UCC_GETH and/or SERIAL_QE). Fixes following link error (CONFIG_SMP should be =y to trigger this): arch/powerpc/sysdev/built-in.o: In function `qe_usb_clock_set': (.text+0x3cae): undefined reference to `cmxgcr_lock' make: *** [.tmp_vmlinux1] Error 1 While at it, also add missing spinlock.h includes. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-By: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc: Fix a bunch of sparse warnings in the qe_libAndy Fleming2008-07-161-3/+3
| | | | | | | | Mostly having to do with not marking things __iomem. And some failure to use appropriate accessors to read MMIO regs. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/QE: qe_reset should be __initAnton Vorontsov2008-06-111-1/+1
| | | | | | | | | | | This patch fixes following section mismatch: WARNING: arch/powerpc/sysdev/built-in.o(.text+0x11d8): Section mismatch in reference from the function qe_reset() to the function .init.text:cpm_muram_init() Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/QE: switch to the cpm_muram implementationAnton Vorontsov2008-06-101-92/+0
| | | | | | | | | | | | | | | | | | This is very trivial patch. We're transitioning to the cpm_muram_* calls. That's it. Less trivial changes: - BD_SC_* defines were defined in the cpm.h and qe.h, so to avoid redefines we remove BD_SC from the qe.h and use cpm.h along with cpm_muram_* prototypes; - qe_muram_dump was unused and thus removed; - added some code to the cpm_common.c to support legacy QE bindings (data-only node name). - For convenience, define qe_* calls to cpm_*. So drivers need not to be changed. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: export qe_get_brg_clk()Anton Vorontsov2008-04-171-2/+3
| | | | | | | qe_get_brg_clk() will be used by the fsl_gtm routines. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: implement qe_muram_offsetAnton Vorontsov2008-04-171-7/+1
| | | | | | | | | | | qe_muram_offset is the reverse of the qe_muram_addr, will be used for the Freescale QE USB Host Controller driver. This patch also moves qe_muram_addr into the qe.h header, plus adds __iomem hints to use with sparse. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: Make qe_get_firmware_info reentrantIonut Nicu2008-03-101-1/+4
| | | | | | | | | | | The function was returning NULL the second time it was called if the firmware was uploaded from the boot loader or the first time it was called if the firmware was uploaded from the kernel. Signed-off-by: Ionut Nicu <ionut.nicu@freescale.com> Acked-By: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: Fix QE firmware uploading limitTimur Tabi2008-03-071-1/+1
| | | | | | | | Fix a typo in qe_upload_firmware() that prevented uploading firmware on systems with more than one RISC core. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] qe_lib: fix few fluffy negligencesAnton Vorontsov2008-02-051-5/+5
| | | | | | | | | | | One is intoduced by me (of_node_put() absence) and another was present already (not checking for NULL). Found by Stephen Rothwell. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: get rid of most device_types and modelAnton Vorontsov2008-01-281-19/+44
| | | | | | | | | | | Now we're searching for "fsl,qe", "fsl,qe-muram", "fsl,qe-muram-data" and "fsl,qe-ic". Unfortunately it's still impossible to remove device_type = "qe" from the existing device trees because older u-boots are looking for it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: Add ability to upload QE firmwareTimur Tabi2008-01-231-0/+247
| | | | | | | | | | | Define the layout of a binary blob that contains a QE firmware and instructions on how to upload it. Add function qe_upload_firmware() to parse the blob and perform the actual upload. Fully define 'struct rsp' in immap_qe.h to include the actual RISC Special Registers. Added description of a new QE firmware node to booting-without-of.txt. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] qe: add function qe_clock_source()Timur Tabi2007-12-131-0/+32
| | | | | | | | | | | | | Add function qe_clock_source() which takes a string containing the name of a QE clock source (as is typically found in device trees) and returns the matching enum qe_clock value. Update booting-without-of.txt to indicate that the UCC properties rx-clock and tx-clock are deprecated and replaced with rx-clock-name and tx-clock-name, which use strings instead of numbers to indicate QE clock sources. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] QE: change qe_setbrg() to take an enum qe_clock instead of an integerTimur Tabi2007-12-111-5/+9
| | | | | | | | | qe_setbrg() currently takes an integer to indicate the BRG number. Change that to take an enum qe_clock instead, since this enum is intended to represent clock sources. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] qe: miscellaneous code improvements and fixes to the QE libraryTimur Tabi2007-10-081-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes numerous miscellaneous code improvements to the QE library. 1. Remove struct ucc_common and merge ucc_init_guemr() into ucc_set_type() (every caller of ucc_init_guemr() also calls ucc_set_type()). Modify all callers of ucc_set_type() accordingly. 2. Remove the unused enum ucc_pram_initial_offset. 3. Refactor qe_setbrg(), also implement work-around for errata QE_General4. 4. Several printk() calls were missing the terminating \n. 5. Add __iomem where needed, and change u16 to __be16 and u32 to __be32 where appropriate. 6. In ucc_slow_init() the RBASE and TBASE registers in the PRAM were programmed with the wrong value. 7. Add the protocol type to struct us_info and updated ucc_slow_init() to use it, instead of always programming QE_CR_PROTOCOL_UNSPECIFIED. 8. Rename ucc_slow_restart_x() to ucc_slow_restart_tx() 9. Add several macros in qe.h (mostly for slow UCC support, but also to standardize some naming convention) and remove several unused macros. 10. Update ucc_geth.c to use the new macros. 11. Add ucc_slow_info.protocol to specify which QE_CR_PROTOCOL_xxx protcol to use when initializing the UCC in ucc_slow_init(). 12. Rename ucc_slow_pram.rfcr to rbmr and ucc_slow_pram.tfcr to tbmr, since these are the real names of the registers. 13. Use the setbits, clrbits, and clrsetbits where appropriate. 14. Refactor ucc_set_qe_mux_rxtx(). 15. Remove all instances of 'volatile'. 16. Simplify get_cmxucr_reg(); 17. Replace qe_mux.cmxucrX with qe_mux.cmxucr[]. 18. Updated struct ucc_geth because struct ucc_fast is not padded any more. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] Change rheap functions to use ulongs instead of pointersTimur Tabi2007-05-091-15/+14
| | | | | | | | | | | | | | | | | | | | The rheap allocation functions return a pointer, but the actual value is based on how the heap was initialized, and so it can be anything, e.g. an offset into a buffer. A ulong is a better representation of the value returned by the allocation functions. This patch changes all of the relevant rheap functions to use a unsigned long integers instead of a pointer. In case of an error, the value returned is a negative error code that has been cast to an unsigned long. The caller can use the IS_ERR_VALUE() macro to check for this. All code which calls the rheap functions is updated accordingly. Macros IS_MURAM_ERR() and IS_DPERR(), have been deleted in favor of IS_ERR_VALUE(). Also added error checking to rh_attach_region(). Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] Rename get_property to of_get_property: arch/powerpcStephen Rothwell2007-04-131-2/+2
| | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] qe: Fix QUICC Engine SDMA setup errorsChuck Meade2007-03-291-3/+3
| | | | | | | | | Correct the alignment of the internal buffer used by the QUICC Engine SDMA controller to 4Kbytes. Correct the shift direction in the logic that sets up the SDMR register for the QUICC Engine SDMA controller. Signed-off-by: Chuck Meade <chuckmeade@mindspring.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Merge branch 'linux-2.6' into for-linusPaul Mackerras2006-12-041-2/+1
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| * [POWERPC] qe_lib: qe_issue_cmd writes wrong value to CECDRTimur Tabi2006-11-011-2/+1
| | | | | | | | | | | | | | | | | | Changed qe_issue_cmd() to write cmd_input to the CECDR unmodified. It was treating cmd_input as a virtual address and tried to convert it to a physical address. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] Optimize qe_brg struct to use an arrayTimur Tabi2006-11-131-2/+1
|/ | | | | | | | | | The qe_brg structure manually defined each of the 16 BRG registers, which made any code that used them cumbersome. This patch replaces the fields with a single 16-element array. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add QUICC Engine (QE) infrastructureLi Yang2006-10-041-0/+353
Add QUICC Engine (QE) configuration, header files, and QE management and library code that are used by QE devices drivers. Includes Leo's modifications up to, and including, the platform_device to of_device adaptation: "The series of patches add generic QE infrastructure called qe_lib, and MPC8360EMDS board support. Qe_lib is used by QE device drivers such as ucc_geth driver. This version updates QE interrupt controller to use new irq mapping mechanism, addresses all the comments received with last submission and includes some style fixes. v2: Change to use device tree for BCSR and MURAM; Remove I/O port interrupt handling code as it is not generic enough. v3: Address comments from Kumar; Update definition of several device tree nodes; Copyright style change." In addition, the following changes have been made: o removed typedefs o uint -> u32 conversions o removed following defines: QE_SIZEOF_BD, BD_BUFFER_ARG, BD_BUFFER_CLEAR, BD_BUFFER, BD_STATUS_AND_LENGTH_SET, BD_STATUS_AND_LENGTH, and BD_BUFFER_SET because they hid sizeof/in_be32/out_be32 operations from the reader. o fixed qe_snums_init() serial num assignment to use a const array o made CONFIG_UCC_FAST select UCC_SLOW o reduced NR_QE_IC_INTS from 128 to 64 o remove _IO_BASE, etc. defines (not used) o removed irrelevant comments, added others to resemble removed BD_ defines o realigned struct definitions in headers o various other style fixes including things like pinMask -> pin_mask o fixed a ton of whitespace issues o marked ioregs as __be32/__be16 o removed platform_device code and redundant get_qe_base() o removed redundant comments o added cpu_relax() to qe_reset o uncasted all get_property() assignments o eliminated unneeded casts o eliminated immrbar_phys_to_virt (not used) Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Shlomi Gridish <gridish@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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