- Aug 18, 2015
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Kevin Hao authored
It makes no sense to put the instructions for calculating the lock value (cpu number + 1) and the clearing of eq bit of cr1 in lbarx/stbcx loop. And when the lock is acquired by the other thread, the current lock value has no chance to equal with the lock value used by current cpu. So we can skip the comparing for these two lock values in the lbz/bne loop. Signed-off-by:
Kevin Hao <haokexin@gmail.com> Signed-off-by:
Scott Wood <scottwood@freescale.com>
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Kevin Hao authored
Since we moved the "lock" to be the first element of struct tlb_core_data in commit 82d86de2 ("powerpc/e6500: Make TLB lock recursive"), this macro is not used by any code. Just delete it. Signed-off-by:
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Jason Jin authored
In u-boot, when set the video as console, the name 'vga' is used as a general name for the video device, during the fdt_fixup_stdout process, the 'vga' name is used to search in the dtb to setup the 'linux,stdout-path' node. Though the P1022 DIU is not VGA-compatible device, to meet the 'vga' name used in u-boot, the vga alias node is added for P1022 in this patch. At the same time, a display alias is also added so that no other components grow dependencies on the vga alias node. Signed-off-by:
Jason Jin <Jason.Jin@freescale.com> Signed-off-by:
Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by:
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- Aug 08, 2015
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Scott Wood authored
In CoreNet systems it is not allowed to mix M and non-M mappings to the same memory, and coherent DMA accesses are considered to be M mappings for this purpose. Ignoring this has been observed to cause hard lockups in non-SMP kernels on e6500. Furthermore, e6500 implements the LRAT (logical to real address table) which allows KVM guests to control the WIMGE bits. This means that KVM cannot force the M bit on the way it usually does, so the guest had better set it itself. Signed-off-by: -
Scott Wood authored
map_kernel() doesn't catch all places that create kernel PTEs. In particular, vmalloc() calls set_pte_at() directly. This causes a crash when booting a non-SMP kernel on e6500. Move the sync to __set_pte(), to be executed only for kernel addresses. Signed-off-by: -
Jaiprakash Singh authored
IFC IO accressor are set at run time based on IFC IP registers endianness.IFC node in DTS file contains information about endianness. Signed-off-by:
Jaiprakash Singh <b44839@freescale.com> Signed-off-by:
Brian Norris <computersforpeace@gmail.com>
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Shaohui Xie authored
Aquantia PHYs used on platforms such as T2080RDB, T1024RDB. Signed-off-by:
Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by:
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Shaohui Xie authored
The PHY uses XAUI interface to connect to MAC, mostly the PHY used on riser card. Signed-off-by:
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Shengzhou Liu authored
Add support for INA220 current sensor. Signed-off-by:
Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by:
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Shengzhou Liu authored
Add support for INA220 current sensor. Signed-off-by:
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LEROY Christophe authored
This patch adds a few optimisations in memcpy functions by using lbzu/stbu instead of lxb/stb and by re-ordering insn inside a loop to reduce latency due to loading Signed-off-by:
Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by:
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LEROY Christophe authored
cacheable_memcpy uses dcbz instruction and is more efficient than memcpy when the destination is in RAM. If the destination is in an io area, memcpy_toio() is normally used, not memcpy This patch renames memcpy as generic_memcpy, and renames cacheable_memcpy as memcpy On MPC885, we get approximatly 7% increase of the transfer rate on an FTP reception Signed-off-by:
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LEROY Christophe authored
cacheable_memzero() which has become the new memset() and the old memset() are quite similar, so just merge them. Signed-off-by:
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LEROY Christophe authored
cacheable_memzero uses dcbz instruction and is more efficient than memset(0) when the destination is in RAM This patch renames memset as generic_memset, and defines memset as a prolog to cacheable_memzero. This prolog checks if the byte to set is 0. If not, it falls back to generic_memcpy() cacheable_memzero disappears as it is not referenced anywhere anymore Signed-off-by:
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LEROY Christophe authored
This partially reverts commit 'powerpc: Remove duplicate cacheable_memcpy/memzero functions ("b05ae4ee ")' Functions cacheable_memcpy/memzero are more efficient than memcpy/memset as they use the dcbz instruction which avoids refill of the cacheline with the data that we will overwrite. Signed-off-by: -
LEROY Christophe authored
CPM muram is not cached, so use memset_io() instead of memset() Signed-off-by:
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Scott Wood authored
__flush_dcache_icache_phys() requires the ability to access the memory with the MMU disabled, which means that on a 32-bit system any memory above 4 GiB is inaccessible. In particular, mpc86xx is 32-bit and can have more than 4 GiB of RAM. Signed-off-by: -
LEROY Christophe authored
The C version of csum_add() as defined in include/net/checksum.h gives the following assembly in ppc32: 0: 7c 04 1a 14 add r0,r4,r3 4: 7c 64 00 10 subfc r3,r4,r0 8: 7c 63 19 10 subfe r3,r3,r3 c: 7c 63 00 50 subf r3,r3,r0 and the following in ppc64: 0xc000000000001af8 <+0>: add r3,r3,r4 0xc000000000001afc <+4>: cmplw cr7,r3,r4 0xc000000000001b00 <+8>: mfcr r4 0xc000000000001b04 <+12>: rlwinm r4,r4,29,31,31 0xc000000000001b08 <+16>: add r3,r4,r3 0xc000000000001b0c <+20>: clrldi r3,r3,32 0xc000000000001b10 <+24>: blr include/net/checksum.h also offers the possibility to define an arch specific function. This patch provides a specific csum_add() inline function. Signed-off-by: -
LEROY Christophe authored
csum_tcpudp_magic() is only a few instructions, and does modify really few registers. So it is not worth having it as a separate function and suffer function branching and saving of volatile registers. This patch makes it inline by use of the already existing csum_tcpudp_nofold() function. Signed-off-by:
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Scott Wood authored
Unify mpc85xx and corenet configs using fragments, to ease maintenance and avoid the sort of drift that the previous patch fixed. Hardware and software options are separated, with the hope that other embedded platforms could share the software options, and to make it easier to maintain custom/alternate configs that focus on either hardware or software options. Due to the previous patch, this patch should not affect the results of any of the affected defconfigs -- only how those results are achieved. The resulting config is more or less the union of the options that any of the configs previously selected. No attempt was made in this (or the previous) patch to edit out questionable options, but this patch will make it easier to do so in future patches. Signed-off-by: -
Scott Wood authored
The mpc85xx and corenet configs have many differences between them that can't be explained by the target hardware of each config. The next patch will consolidate these targets using kconfig fragments; this patch shows what the resulting defconfigs will look like (generated by using savedefconfig on a fragment-generated config). Signed-off-by: -
Michael Ellerman authored
corenet32_smp_defconfig is missing some things that modern distros require, enable them. Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Yao Yuan authored
By default we enable DMA(CONFIG_FSL_DMA) support which are needed on P2041RDB, P3041DS, P4080DS, B4860QDS, etc. Signed-off-by:
Yuan Yao <yao.yuan@freescale.com> Signed-off-by:
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Yangbo Lu authored
Signed-off-by:
Yangbo Lu <yangbo.lu@freescale.com> Signed-off-by:
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- Jul 21, 2015
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Gavin Shan authored
When detecting EEH error on non-existing PE, including the reserved one, the PE is simply unfrozen without dumping the PHB diag-data, which is useful for locating the root cause of the EEH error. The patch dumps the PHB diag-data when non-existing PE reports error. Signed-off-by:
Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by:
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Gavin Shan authored
On LE kernel, the non-existing PE number in BE format derived from skiboot firmware isn't converted to LE format properly as following kernel log indicates: EEH: Clear non-existing PHB#4-PE#200000000000000 Signed-off-by:
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Anshuman Khandual authored
This patch adds one helper function 'sigcontext_vmx_regs' which computes quad word aligned pointer for 'vmx_reserve' array element in sigcontext structure making the code more readable. Signed-off-by:
Anshuman Khandual <khandual@linux.vnet.ibm.com> [mpe: Reword comment and fix build for CONFIG_ALTIVEC=n] Signed-off-by:
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- Jul 16, 2015
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Anshuman Khandual authored
Commit ce48b210 "powerpc: Add VSX context save/restore, ptrace and signal support" expanded the 'vmx_reserve' array element to contain 101 double words, but the comment block above was not updated. Also reorder the constants in the array size declaration to reflect the logic mentioned in the comment block above. This change helps in explaining how the HW registers are represented in the array. But no functional change. Signed-off-by:
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Anshuman Khandual authored
Currently tm_orig_msr is getting used during process context switch only. Then there is ckpt_regs which saves the checkpointed userspace context The MSR slot contained in ckpt_regs structure can be used during process context switch instead of tm_orig_msr, thus allowing us to drop it from thread_struct structure. This patch does that change. Acked-by:
Michael Neuling <mikey@neuling.org> Signed-off-by:
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Johannes Thumshirn authored
Destroy afu->contexts_idr on release of an afu, reclaiming the allocated memory. Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Acked-by:
Ian Munsie <imunsie@au1.ibm.com> Signed-off-by:
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Johannes Thumshirn authored
Destroy cxl_adapter_idr on module exit, reclaiming the allocated memory. This was detected by the following semantic patch (written by Luis Rodriguez <mcgrof@suse.com>) <SmPL> @ defines_module_init @ declarer name module_init, module_exit; declarer name DEFINE_IDR; identifier init; @@ module_init(init); @ defines_module_exit @ identifier exit; @@ module_exit(exit); @ declares_idr depends on defines_module_init && defines_module_exit @ identifier idr; @@ DEFINE_IDR(idr); @ on_exit_calls_destroy depends on declares_idr && defines_module_exit @ identifier declares_idr.idr, defines_module_exit.exit; @@ exit(void) { ... idr_destroy(&idr); ... } @ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @ identifier declares_idr.idr, defines_module_exit.exit; @@ exit(void) { ... +idr_destroy(&idr); } </SmPL> Signed-off-by: -
Vipin K Parashar authored
This patch adds support for OPAL EPOW (Environmental and Power Warnings) and DPO (Delayed Power Off) events for the PowerNV platform. These events are generated on FSP (Flexible Service Processor) based systems. EPOW events are generated due to various critical system conditions that require system shutdown. A few examples of these conditions are high ambient temperature or system running on UPS power with low UPS battery. DPO event is generated in response to admin initiated system shutdown request. Upon receipt of EPOW and DPO events the host kernel invokes orderly_poweroff() for performing graceful system shutdown. Signed-off-by:
Vipin K Parashar <vipin@linux.vnet.ibm.com> Acked-by:
Vaibhav Jain <vaibhav@linux.vnet.ibm.com> Signed-off-by:
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- Jul 13, 2015
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Gavin Shan authored
When releasing PE for SRIOV VF, the PE is forced to be frozen wrongly. When the same PE is picked for another VF, it won't work anyhow. The patch fixes the issue by unfreezing, not freezing the VF PE when releasing it. Signed-off-by:
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Gavin Shan authored
The PELTV of PF PE should include VF PE, which is missed by current code, so that the VF PE is frozen automatically when freezing PF PE. The patch fixes the PELTV of PF PE to include VF PE. Signed-off-by:
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Gavin Shan authored
On PHB3, PE might be reserved in advance to reflect the M64 segments consumed by the PE according to M64 BARs (exclude VF BARs) of the PCI devices included in the PE. The PE is picked based on M64 BARs instead of the bridge's M64 windows, which might include VF BARs. Otherwise, wrong PE could be picked. The patch calculates the used M64 segments and PE numbers according to the M64 BARs, excluding VF BARs, of PCI devices in one particular PE, instead of the bridge's M64 windows. Then the right PE number is picked. Signed-off-by:
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Gavin Shan authored
The patch changes the type of last argument of pnv_ioda_setup_bus_PE() and phb::pick_m64_pe() to boolean. No functional change. Signed-off-by:
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Gavin Shan authored
On PHB3, some PEs might be reserved in advance to reflect the M64 segments consumed by those PEs. We're reserving PEs based on the M64 window of root port, which might contain VF BAR. The PEs for VFs are allocated dynamically, not reserved based on the consumed M64 segments. So the M64 window of root port isn't reliable for the task. Instead, we go through M64 BARs (VF BARs excluded) of PCI devices under the specified root bus and reserve PEs accordingly, as the patch does. Signed-off-by:
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Gavin Shan authored
The PE numbers are reserved according to root port's M64 window, which is aligned to M64 segment finely. So one PE shouldn't be reserved for multiple times. We will reserve PE numbers according to the M64 BARs of PCI device in subsequent patches, which aren't aligned to M64 segment size finely. It means one particular PE could be reserved for multiple times. The patch allows one PE to be reserved for multiple times and we print the warning message at debugging level. Signed-off-by:
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Anton Blanchard authored
mtmsr() does the right thing on 32bit and 64bit, so use it everywhere. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Michael Ellerman authored
The encoding of the lengths in the ibm_architecture_vec array is "interesting" to say the least. It's non-obvious how the number of bytes we provide relates to the length value. In fact we already got it wrong once, see 11e9ed43 "Fix up ibm_architecture_vec definition". So add some macros to make it (hopefully) clearer. These at least have the property that the integer present in the code is equal to the number of bytes that follows it. Signed-off-by:
Stewart Smith <stewart@linux.vnet.ibm.com>
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