[asahilinux:bits/140-pci 10/15] drivers/pci/controller/pcie-apple.c:468:40: error: implicit declaration of function 'FIELD_PREP'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/AsahiLinux/linux bits/140-pci
head:   07c5be0c765a02a50f5777ec7cb2e33c82d641c3
commit: bc47733313473d25b60a7f875cf6f806d62a641d [10/15] PCIE: apple: Add T602x PCIe support
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20231001/202310011802.cL64lJDc-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231001/202310011802.cL64lJDc-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310011802.cL64lJDc-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/pci/controller/pcie-apple.c: In function 'apple_pcie_port_setup_irq':
>> drivers/pci/controller/pcie-apple.c:468:40: error: implicit declaration of function 'FIELD_PREP' [-Werror=implicit-function-declaration]
     468 |                         writel_relaxed(FIELD_PREP(PORT_MSIMAP_TARGET, i) |
         |                                        ^~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/FIELD_PREP +468 drivers/pci/controller/pcie-apple.c

   430	
   431	static int apple_pcie_port_setup_irq(struct apple_pcie_port *port)
   432	{
   433		struct fwnode_handle *fwnode = &port->np->fwnode;
   434		struct apple_pcie *pcie = port->pcie;
   435		unsigned int irq;
   436	
   437		/* FIXME: consider moving each interrupt under each port */
   438		irq = irq_of_parse_and_map(to_of_node(dev_fwnode(port->pcie->dev)),
   439					   port->idx);
   440		if (!irq)
   441			return -ENXIO;
   442	
   443		port->domain = irq_domain_create_linear(fwnode, 32,
   444							&apple_port_irq_domain_ops,
   445							port);
   446		if (!port->domain)
   447			return -ENOMEM;
   448	
   449		/* Disable all interrupts */
   450		writel_relaxed(~0, port->base + PORT_INTMSK);
   451		writel_relaxed(~0, port->base + PORT_INTSTAT);
   452		writel_relaxed(~0, port->base + PORT_LINKCMDSTS);
   453	
   454		irq_set_chained_handler_and_data(irq, apple_port_irq_handler, port);
   455	
   456		/* Configure MSI base address */
   457		BUG_ON(upper_32_bits(DOORBELL_ADDR));
   458		writel_relaxed(lower_32_bits(DOORBELL_ADDR),
   459			       port->base + pcie->hw->port_msiaddr);
   460		if (pcie->hw->port_msiaddr_hi)
   461			writel_relaxed(0, port->base + pcie->hw->port_msiaddr_hi);
   462	
   463		/* Enable MSIs, shared between all ports */
   464		if (pcie->hw->port_msimap) {
   465			int i;
   466	
   467			for (i = 0; i < pcie->nvecs; i++) {
 > 468				writel_relaxed(FIELD_PREP(PORT_MSIMAP_TARGET, i) |
   469					       PORT_MSIMAP_ENABLE,
   470					       port->base + pcie->hw->port_msimap + 4 * i);
   471			}
   472	
   473			writel_relaxed(PORT_MSICFG_EN, port->base + PORT_MSICFG);
   474		} else {
   475			writel_relaxed(0, port->base + PORT_MSIBASE);
   476			writel_relaxed((ilog2(pcie->nvecs) << PORT_MSICFG_L2MSINUM_SHIFT) |
   477				PORT_MSICFG_EN, port->base + PORT_MSICFG);
   478		}
   479	
   480		return 0;
   481	}
   482	

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