On Fri, May 24, 2019 at 03:32:19PM +0200, Greg Kurz wrote:
> On Thu, 23 May 2019 15:29:11 +1000
> David Gibson <da...@gibson.dropbear.id.au> wrote:
>
> > spapr_populate_pci_child_dt() adds a 'name' property to the device tree
> > node for PCI devices. This is never necessary for a flattened device tree,
> > it is implicit in the name added when the node is constructed. In fact
> > anything we do add to a 'name' property will be overwritten with something
> > derived from the structural name in the guest firmware (but in fact it is
> > exactly the same bytes).
> >
> > So, remove that. In addition, pci_get_node_name() is very simple, so fold
> > it into its (also simple) sole caller spapr_create_pci_child_dt().
> >
> > While we're there rename pci_find_device_name() to the shorter and more
> > accurate dt_name_from_class().
> >
> > Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
> > ---
> > hw/ppc/spapr_pci.c | 43 +++++++++++++++++--------------------------
> > 1 file changed, 17 insertions(+), 26 deletions(-)
> >
> > diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> > index 97961b0128..b2db46ef1d 100644
> > --- a/hw/ppc/spapr_pci.c
> > +++ b/hw/ppc/spapr_pci.c
> > @@ -1173,8 +1173,8 @@ static const PCIClass pci_classes[] = {
> > { "data-processing-controller", spc_subclass },
> > };
> >
> > -static const char *pci_find_device_name(uint8_t class, uint8_t subclass,
> > - uint8_t iface)
> > +static const char *dt_name_from_class(uint8_t class, uint8_t subclass,
> > + uint8_t iface)
> > {
> > const PCIClass *pclass;
> > const PCISubClass *psubclass;
> > @@ -1216,23 +1216,6 @@ static const char *pci_find_device_name(uint8_t
> > class, uint8_t subclass,
> > return name;
> > }
> >
> > -static gchar *pci_get_node_name(PCIDevice *dev)
> > -{
> > - int slot = PCI_SLOT(dev->devfn);
> > - int func = PCI_FUNC(dev->devfn);
> > - uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3);
> > - const char *name;
> > -
> > - name = pci_find_device_name((ccode >> 16) & 0xff, (ccode >> 8) & 0xff,
> > - ccode & 0xff);
> > -
> > - if (func != 0) {
> > - return g_strdup_printf("%s@%x,%x", name, slot, func);
> > - } else {
> > - return g_strdup_printf("%s@%x", name, slot);
> > - }
> > -}
> > -
> > static uint32_t spapr_phb_get_pci_drc_index(SpaprPhbState *phb,
> > PCIDevice *pdev);
> >
> > @@ -1300,11 +1283,6 @@ static void spapr_populate_pci_child_dt(PCIDevice
> > *dev, void *fdt, int offset,
> > _FDT(fdt_setprop(fdt, offset, "udf-supported", NULL, 0));
> > }
> >
> > - _FDT(fdt_setprop_string(fdt, offset, "name",
> > - pci_find_device_name((ccode >> 16) & 0xff,
> > - (ccode >> 8) & 0xff,
> > - ccode & 0xff)));
> > -
> > buf = spapr_phb_get_loc_code(sphb, dev);
> > _FDT(fdt_setprop_string(fdt, offset, "ibm,loc-code", buf));
> > g_free(buf);
> > @@ -1348,10 +1326,23 @@ static int spapr_create_pci_child_dt(SpaprPhbState
> > *phb, PCIDevice *dev,
> > void *fdt, int node_offset)
> > {
> > int offset;
> > - gchar *nodename;
> > + const gchar *basename;
> > + char *nodename;
>
> Not sure why you're changing nodename to be a char * instead of a gchar * ...
Uh... by mistake. I'll remove that.
> Apart from that, LGTM.
>
> Reviewed-by: Greg Kurz <gr...@kaod.org>
>
> > + int slot = PCI_SLOT(dev->devfn);
> > + int func = PCI_FUNC(dev->devfn);
> > + uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3);
> > +
> > + basename = dt_name_from_class((ccode >> 16) & 0xff, (ccode >> 8) &
> > 0xff,
> > + ccode & 0xff);
> > +
> > + if (func != 0) {
> > + nodename = g_strdup_printf("%s@%x,%x", basename, slot, func);
> > + } else {
> > + nodename = g_strdup_printf("%s@%x", basename, slot);
> > + }
> >
> > - nodename = pci_get_node_name(dev);
> > _FDT(offset = fdt_add_subnode(fdt, node_offset, nodename));
> > +
> > g_free(nodename);
> >
> > spapr_populate_pci_child_dt(dev, fdt, offset, phb);
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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