| Message ID | 20191119191505.25286-1-geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | PCI: of: Restore alignment/indentation in host bridge window table | expand |
On Tue, Nov 19, 2019 at 08:15:05PM +0100, Geert Uytterhoeven wrote: > Since the printing of the inbound resources was added, alignment and > indentation of the host bridge window table is broken because of two > reasons: > 1. The "IB MEM" row header is longer than the other headers, > 2. Inbound ranges typically extend beyond 32-bit address space, and thus > don't fit in "#010llx". > > Fix this by extending the row header field to 6 characters, and the > format string to 40-bit addresses. > > Use "%6s" to handle field size and right-alignment, instead of manual > preparation using error-prone snprintf() calls. Use the exact same > format string for both cases, to allow sharing. > > Impact on kernel boot log on r8a7791/koelsch: > > rcar-pcie fe000000.pcie: host bridge /soc/pcie@fe000000 ranges: > -rcar-pcie fe000000.pcie: IO 0xfe100000..0xfe1fffff -> 0x00000000 > -rcar-pcie fe000000.pcie: MEM 0xfe200000..0xfe3fffff -> 0xfe200000 > -rcar-pcie fe000000.pcie: MEM 0x30000000..0x37ffffff -> 0x30000000 > -rcar-pcie fe000000.pcie: MEM 0x38000000..0x3fffffff -> 0x38000000 > -rcar-pcie fe000000.pcie: IB MEM 0x40000000..0xbfffffff -> 0x40000000 > -rcar-pcie fe000000.pcie: IB MEM 0x200000000..0x2ffffffff -> 0x200000000 > +rcar-pcie fe000000.pcie: IO 0x00fe100000..0x00fe1fffff -> 0x0000000000 > +rcar-pcie fe000000.pcie: MEM 0x00fe200000..0x00fe3fffff -> 0x00fe200000 > +rcar-pcie fe000000.pcie: MEM 0x0030000000..0x0037ffffff -> 0x0030000000 > +rcar-pcie fe000000.pcie: MEM 0x0038000000..0x003fffffff -> 0x0038000000 > +rcar-pcie fe000000.pcie: IB MEM 0x0040000000..0x00bfffffff -> 0x0040000000 > +rcar-pcie fe000000.pcie: IB MEM 0x0200000000..0x02ffffffff -> 0x0200000000 > > Fixes: 52ac576f88f9f701 ("PCI: of: Add inbound resource parsing to helpers") > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> This is fine with me, and since it applies on top of 52ac576f88f9f701 (longer than the usual 12-char SHA1, BTW), which is on Lorenzo's pci/mmio-dma-ranges branch, I assume Lorenzo will be the one to take care of this. pci_register_host_bridge() prints some of this info like this: pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] pci_bus 0000:00: root bus resource [mem 0xdc800000-0xfebfffff window] Is there any opportunity for consolidating these or at least making the format the same? I assume we're currently printing most of that info twice, once in devm_of_pci_get_host_bridge_resources() and again in pci_register_host_bridge()? > --- > drivers/pci/of.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) > > diff --git a/drivers/pci/of.c b/drivers/pci/of.c > index e7e12adcff3a3836..81ceeaa6f1d5a2c5 100644 > --- a/drivers/pci/of.c > +++ b/drivers/pci/of.c > @@ -265,7 +265,7 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, > struct resource *bus_range; > struct of_pci_range range; > struct of_pci_range_parser parser; > - char range_type[4]; > + const char *range_type; > int err; > > if (io_base) > @@ -299,12 +299,12 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, > for_each_of_pci_range(&parser, &range) { > /* Read next ranges element */ > if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO) > - snprintf(range_type, 4, " IO"); > + range_type = "IO"; > else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM) > - snprintf(range_type, 4, "MEM"); > + range_type = "MEM"; > else > - snprintf(range_type, 4, "err"); > - dev_info(dev, " %s %#010llx..%#010llx -> %#010llx\n", > + range_type = "err"; > + dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", > range_type, range.cpu_addr, > range.cpu_addr + range.size - 1, range.pci_addr); > > @@ -359,8 +359,8 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, > range.cpu_addr == OF_BAD_ADDR || range.size == 0) > continue; > > - dev_info(dev, "IB MEM %#010llx..%#010llx -> %#010llx\n", > - range.cpu_addr, > + dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", > + "IB MEM", range.cpu_addr, > range.cpu_addr + range.size - 1, range.pci_addr); > > > -- > 2.17.1 >
Hi Bjorn, On Tue, Nov 19, 2019 at 8:48 PM Bjorn Helgaas <helgaas@kernel.org> wrote: > On Tue, Nov 19, 2019 at 08:15:05PM +0100, Geert Uytterhoeven wrote: > > Since the printing of the inbound resources was added, alignment and > > indentation of the host bridge window table is broken because of two > > reasons: > > 1. The "IB MEM" row header is longer than the other headers, > > 2. Inbound ranges typically extend beyond 32-bit address space, and thus > > don't fit in "#010llx". > > > > Fix this by extending the row header field to 6 characters, and the > > format string to 40-bit addresses. > > > > Use "%6s" to handle field size and right-alignment, instead of manual > > preparation using error-prone snprintf() calls. Use the exact same > > format string for both cases, to allow sharing. > > > > Impact on kernel boot log on r8a7791/koelsch: > > > > rcar-pcie fe000000.pcie: host bridge /soc/pcie@fe000000 ranges: > > -rcar-pcie fe000000.pcie: IO 0xfe100000..0xfe1fffff -> 0x00000000 > > -rcar-pcie fe000000.pcie: MEM 0xfe200000..0xfe3fffff -> 0xfe200000 > > -rcar-pcie fe000000.pcie: MEM 0x30000000..0x37ffffff -> 0x30000000 > > -rcar-pcie fe000000.pcie: MEM 0x38000000..0x3fffffff -> 0x38000000 > > -rcar-pcie fe000000.pcie: IB MEM 0x40000000..0xbfffffff -> 0x40000000 > > -rcar-pcie fe000000.pcie: IB MEM 0x200000000..0x2ffffffff -> 0x200000000 > > +rcar-pcie fe000000.pcie: IO 0x00fe100000..0x00fe1fffff -> 0x0000000000 > > +rcar-pcie fe000000.pcie: MEM 0x00fe200000..0x00fe3fffff -> 0x00fe200000 > > +rcar-pcie fe000000.pcie: MEM 0x0030000000..0x0037ffffff -> 0x0030000000 > > +rcar-pcie fe000000.pcie: MEM 0x0038000000..0x003fffffff -> 0x0038000000 > > +rcar-pcie fe000000.pcie: IB MEM 0x0040000000..0x00bfffffff -> 0x0040000000 > > +rcar-pcie fe000000.pcie: IB MEM 0x0200000000..0x02ffffffff -> 0x0200000000 > > > > Fixes: 52ac576f88f9f701 ("PCI: of: Add inbound resource parsing to helpers") > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > > This is fine with me, and since it applies on top of 52ac576f88f9f701 > (longer than the usual 12-char SHA1, BTW), which is on Lorenzo's > pci/mmio-dma-ranges branch, I assume Lorenzo will be the one to take > care of this. > > pci_register_host_bridge() prints some of this info like this: > > pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] > pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] > pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] > pci_bus 0000:00: root bus resource [mem 0xdc800000-0xfebfffff window] > > Is there any opportunity for consolidating these or at least making > the format the same? > > I assume we're currently printing most of that info twice, once > in devm_of_pci_get_host_bridge_resources() and again in > pci_register_host_bridge()? (after ignoring PCIe link down, as I don't have a spare PCIe card to plug in) rcar-pcie fe000000.pcie: host bridge /soc/pcie@fe000000 ranges: rcar-pcie fe000000.pcie: IO 0x00fe100000..0x00fe1fffff -> 0x0000000000 rcar-pcie fe000000.pcie: MEM 0x00fe200000..0x00fe3fffff -> 0x00fe200000 rcar-pcie fe000000.pcie: MEM 0x0030000000..0x0037ffffff -> 0x0030000000 rcar-pcie fe000000.pcie: MEM 0x0038000000..0x003fffffff -> 0x0038000000 rcar-pcie fe000000.pcie: IB MEM 0x0040000000..0x00bfffffff -> 0x0040000000 rcar-pcie fe000000.pcie: IB MEM 0x0200000000..0x02ffffffff -> 0x0200000000 rcar-pcie fe000000.pcie: PCIe link down (ignored) rcar-pcie fe000000.pcie: PCIe x4: link up rcar-pcie fe000000.pcie: PCI host bridge to bus 0002:00 pci_bus 0002:00: root bus resource [bus 00-ff] pci_bus 0002:00: root bus resource [io 0x0000-0xfffff] pci_bus 0002:00: root bus resource [mem 0xfe200000-0xfe3fffff] pci_bus 0002:00: root bus resource [mem 0x30000000-0x37ffffff] pci_bus 0002:00: root bus resource [mem 0x38000000-0x3fffffff pref] pci 0002:00:00.0: [1912:001f] type 01 class 0x060400 pci 0002:00:00.0: enabling Extended Tags pci 0002:00:00.0: PME# supported from D0 D3hot D3cold PCI: bus0: Fast back to back transfers disabled So some, but not all, info is indeed duplicated. Gr{oetje,eeting}s, Geert
On Tue, Nov 19, 2019 at 08:15:05PM +0100, Geert Uytterhoeven wrote: > Since the printing of the inbound resources was added, alignment and > indentation of the host bridge window table is broken because of two > reasons: > 1. The "IB MEM" row header is longer than the other headers, > 2. Inbound ranges typically extend beyond 32-bit address space, and thus > don't fit in "#010llx". > > Fix this by extending the row header field to 6 characters, and the > format string to 40-bit addresses. > > Use "%6s" to handle field size and right-alignment, instead of manual > preparation using error-prone snprintf() calls. Use the exact same > format string for both cases, to allow sharing. > > Impact on kernel boot log on r8a7791/koelsch: > > rcar-pcie fe000000.pcie: host bridge /soc/pcie@fe000000 ranges: > -rcar-pcie fe000000.pcie: IO 0xfe100000..0xfe1fffff -> 0x00000000 > -rcar-pcie fe000000.pcie: MEM 0xfe200000..0xfe3fffff -> 0xfe200000 > -rcar-pcie fe000000.pcie: MEM 0x30000000..0x37ffffff -> 0x30000000 > -rcar-pcie fe000000.pcie: MEM 0x38000000..0x3fffffff -> 0x38000000 > -rcar-pcie fe000000.pcie: IB MEM 0x40000000..0xbfffffff -> 0x40000000 > -rcar-pcie fe000000.pcie: IB MEM 0x200000000..0x2ffffffff -> 0x200000000 > +rcar-pcie fe000000.pcie: IO 0x00fe100000..0x00fe1fffff -> 0x0000000000 > +rcar-pcie fe000000.pcie: MEM 0x00fe200000..0x00fe3fffff -> 0x00fe200000 > +rcar-pcie fe000000.pcie: MEM 0x0030000000..0x0037ffffff -> 0x0030000000 > +rcar-pcie fe000000.pcie: MEM 0x0038000000..0x003fffffff -> 0x0038000000 > +rcar-pcie fe000000.pcie: IB MEM 0x0040000000..0x00bfffffff -> 0x0040000000 > +rcar-pcie fe000000.pcie: IB MEM 0x0200000000..0x02ffffffff -> 0x0200000000 > > Fixes: 52ac576f88f9f701 ("PCI: of: Add inbound resource parsing to helpers") > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- > drivers/pci/of.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) Hi Rob, do you mind if I squash this patch in the Fixes: above ? Thanks, Lorenzo > diff --git a/drivers/pci/of.c b/drivers/pci/of.c > index e7e12adcff3a3836..81ceeaa6f1d5a2c5 100644 > --- a/drivers/pci/of.c > +++ b/drivers/pci/of.c > @@ -265,7 +265,7 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, > struct resource *bus_range; > struct of_pci_range range; > struct of_pci_range_parser parser; > - char range_type[4]; > + const char *range_type; > int err; > > if (io_base) > @@ -299,12 +299,12 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, > for_each_of_pci_range(&parser, &range) { > /* Read next ranges element */ > if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO) > - snprintf(range_type, 4, " IO"); > + range_type = "IO"; > else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM) > - snprintf(range_type, 4, "MEM"); > + range_type = "MEM"; > else > - snprintf(range_type, 4, "err"); > - dev_info(dev, " %s %#010llx..%#010llx -> %#010llx\n", > + range_type = "err"; > + dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", > range_type, range.cpu_addr, > range.cpu_addr + range.size - 1, range.pci_addr); > > @@ -359,8 +359,8 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, > range.cpu_addr == OF_BAD_ADDR || range.size == 0) > continue; > > - dev_info(dev, "IB MEM %#010llx..%#010llx -> %#010llx\n", > - range.cpu_addr, > + dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", > + "IB MEM", range.cpu_addr, > range.cpu_addr + range.size - 1, range.pci_addr); > > > -- > 2.17.1 >
On Wed, Nov 20, 2019 at 10:27 AM Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> wrote: > > On Tue, Nov 19, 2019 at 08:15:05PM +0100, Geert Uytterhoeven wrote: > > Since the printing of the inbound resources was added, alignment and > > indentation of the host bridge window table is broken because of two > > reasons: > > 1. The "IB MEM" row header is longer than the other headers, > > 2. Inbound ranges typically extend beyond 32-bit address space, and thus > > don't fit in "#010llx". > > > > Fix this by extending the row header field to 6 characters, and the > > format string to 40-bit addresses. > > > > Use "%6s" to handle field size and right-alignment, instead of manual > > preparation using error-prone snprintf() calls. Use the exact same > > format string for both cases, to allow sharing. > > > > Impact on kernel boot log on r8a7791/koelsch: > > > > rcar-pcie fe000000.pcie: host bridge /soc/pcie@fe000000 ranges: > > -rcar-pcie fe000000.pcie: IO 0xfe100000..0xfe1fffff -> 0x00000000 > > -rcar-pcie fe000000.pcie: MEM 0xfe200000..0xfe3fffff -> 0xfe200000 > > -rcar-pcie fe000000.pcie: MEM 0x30000000..0x37ffffff -> 0x30000000 > > -rcar-pcie fe000000.pcie: MEM 0x38000000..0x3fffffff -> 0x38000000 > > -rcar-pcie fe000000.pcie: IB MEM 0x40000000..0xbfffffff -> 0x40000000 > > -rcar-pcie fe000000.pcie: IB MEM 0x200000000..0x2ffffffff -> 0x200000000 > > +rcar-pcie fe000000.pcie: IO 0x00fe100000..0x00fe1fffff -> 0x0000000000 > > +rcar-pcie fe000000.pcie: MEM 0x00fe200000..0x00fe3fffff -> 0x00fe200000 > > +rcar-pcie fe000000.pcie: MEM 0x0030000000..0x0037ffffff -> 0x0030000000 > > +rcar-pcie fe000000.pcie: MEM 0x0038000000..0x003fffffff -> 0x0038000000 > > +rcar-pcie fe000000.pcie: IB MEM 0x0040000000..0x00bfffffff -> 0x0040000000 > > +rcar-pcie fe000000.pcie: IB MEM 0x0200000000..0x02ffffffff -> 0x0200000000 > > > > Fixes: 52ac576f88f9f701 ("PCI: of: Add inbound resource parsing to helpers") > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > > --- > > drivers/pci/of.c | 14 +++++++------- > > 1 file changed, 7 insertions(+), 7 deletions(-) > > Hi Rob, > > do you mind if I squash this patch in the Fixes: above ? No, LGTM. Rob
diff --git a/drivers/pci/of.c b/drivers/pci/of.c index e7e12adcff3a3836..81ceeaa6f1d5a2c5 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -265,7 +265,7 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, struct resource *bus_range; struct of_pci_range range; struct of_pci_range_parser parser; - char range_type[4]; + const char *range_type; int err; if (io_base) @@ -299,12 +299,12 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, for_each_of_pci_range(&parser, &range) { /* Read next ranges element */ if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO) - snprintf(range_type, 4, " IO"); + range_type = "IO"; else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM) - snprintf(range_type, 4, "MEM"); + range_type = "MEM"; else - snprintf(range_type, 4, "err"); - dev_info(dev, " %s %#010llx..%#010llx -> %#010llx\n", + range_type = "err"; + dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", range_type, range.cpu_addr, range.cpu_addr + range.size - 1, range.pci_addr); @@ -359,8 +359,8 @@ static int devm_of_pci_get_host_bridge_resources(struct device *dev, range.cpu_addr == OF_BAD_ADDR || range.size == 0) continue; - dev_info(dev, "IB MEM %#010llx..%#010llx -> %#010llx\n", - range.cpu_addr, + dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", + "IB MEM", range.cpu_addr, range.cpu_addr + range.size - 1, range.pci_addr);
Since the printing of the inbound resources was added, alignment and indentation of the host bridge window table is broken because of two reasons: 1. The "IB MEM" row header is longer than the other headers, 2. Inbound ranges typically extend beyond 32-bit address space, and thus don't fit in "#010llx". Fix this by extending the row header field to 6 characters, and the format string to 40-bit addresses. Use "%6s" to handle field size and right-alignment, instead of manual preparation using error-prone snprintf() calls. Use the exact same format string for both cases, to allow sharing. Impact on kernel boot log on r8a7791/koelsch: rcar-pcie fe000000.pcie: host bridge /soc/pcie@fe000000 ranges: -rcar-pcie fe000000.pcie: IO 0xfe100000..0xfe1fffff -> 0x00000000 -rcar-pcie fe000000.pcie: MEM 0xfe200000..0xfe3fffff -> 0xfe200000 -rcar-pcie fe000000.pcie: MEM 0x30000000..0x37ffffff -> 0x30000000 -rcar-pcie fe000000.pcie: MEM 0x38000000..0x3fffffff -> 0x38000000 -rcar-pcie fe000000.pcie: IB MEM 0x40000000..0xbfffffff -> 0x40000000 -rcar-pcie fe000000.pcie: IB MEM 0x200000000..0x2ffffffff -> 0x200000000 +rcar-pcie fe000000.pcie: IO 0x00fe100000..0x00fe1fffff -> 0x0000000000 +rcar-pcie fe000000.pcie: MEM 0x00fe200000..0x00fe3fffff -> 0x00fe200000 +rcar-pcie fe000000.pcie: MEM 0x0030000000..0x0037ffffff -> 0x0030000000 +rcar-pcie fe000000.pcie: MEM 0x0038000000..0x003fffffff -> 0x0038000000 +rcar-pcie fe000000.pcie: IB MEM 0x0040000000..0x00bfffffff -> 0x0040000000 +rcar-pcie fe000000.pcie: IB MEM 0x0200000000..0x02ffffffff -> 0x0200000000 Fixes: 52ac576f88f9f701 ("PCI: of: Add inbound resource parsing to helpers") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- drivers/pci/of.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)